+publisher:"Delft University of Technology" +contributor:("Molenaar, W.F.")

Delft University of Technology

1. Gerritse, A.R. (author). Load principles for drive mechanisms of Miter gates: Assessing suitablitliy of current codes and guidelines for drive mechanisms.

Degree: 2016, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:04cc675c-8aa5-4c74-acbe-466923589bb4

► In recent years, in a number of projects gate drive mechanisms of navigation locks were checked or adapted for a longer service life, during which… (more)

▼ In recent years, in a number of projects gate drive mechanisms of navigation locks were checked or adapted for a longer service life, during which the reliability, safety and availability of the structure had to be guaranteed for an extended period. Several problems were encountered. When verifying the gate drive mechanism, it was found that the drive mechanisms, which have performed well for years, do not meet the current design criteria. According to the current design criteria the capacity of the drive mechanism would be insufficient. The design force according to the latest criteria exceeds the maximum allowed force on the gate, and cannot be applied without major adaptations to the gate and lock head structure, hence, results in high costs. In coming years a series of approximately 50 locks require replacement or large scale maintenance, it is worth considering the apparent contradiction between drive mechanisms that performed satisfactorily for years against the much higher required capacities by the nowadays codes and guidelines, giving rise to the question; Is the approach as presented in the current codes and guidelines, in specific the ROK 1.3 (Richtlijn Ontwerpen Kunstwerken, issued by Rijkswaterstaat), suitable for the design of drive mechanisms? This study presents a case study in order to answer this question. The case study focuses on a navigation lock containing Miter gates. The original design calculations dating from 1974 are compared to an updated calculation according to ROK 1.3. Both calculations are subsequently compared to a more tailored calculation approach that accounts for site-specific forces. This third approach explained some of the key differences between the fully functioning drive mechanism with the capacity as designed in 1974 and the updated calculation applying ROK 1.3. These differences primarily originate in the schematization of the forces affecting the drive mechanism and the resulting combination of forces. Applying the ROK 1.3 resulted in a conservative estimation. Differences in order of magnitude are mostly explained by the adjusted regulations. In the past external forces were not accounted for in the calculations and the reliability requirements have become more stringent.Furthermore, operational requirements were not accounted for in the design phase. Navigation locks have the following main functions: navigation, water management and flood protection. Not defining properly which main function sets the safety requirement for the construction can result in a misjudgement of the loads that affect the navigation lock. ROK 1.3 builds on principles and guidance for the different main functions separately, and these are not harmonized. The requirements for the different main functions relating the availability and structural reliability all translate into partial load factors that are aggregated into a reliability-index. Where one of the requirements leads to the normative reliability-index It is important to account for the different limit states when increasing availability… Advisors/Committee Members: Jonkman, S.N. (mentor), F.%22%29&pagesize-30">Molenaar, W.F. (mentor), Verheij, H.J. (mentor).

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Gerritse, A. R. (. (2016). Load principles for drive mechanisms of Miter gates: Assessing suitablitliy of current codes and guidelines for drive mechanisms. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:04cc675c-8aa5-4c74-acbe-466923589bb4

Chicago Manual of Style (16^th Edition):

Gerritse, A R (author). “Load principles for drive mechanisms of Miter gates: Assessing suitablitliy of current codes and guidelines for drive mechanisms.” 2016. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:04cc675c-8aa5-4c74-acbe-466923589bb4.

MLA Handbook (7^th Edition):

Gerritse, A R (author). “Load principles for drive mechanisms of Miter gates: Assessing suitablitliy of current codes and guidelines for drive mechanisms.” 2016. Web. 08 Mar 2021.

Vancouver:

Gerritse AR(. Load principles for drive mechanisms of Miter gates: Assessing suitablitliy of current codes and guidelines for drive mechanisms. [Internet] [Masters thesis]. Delft University of Technology; 2016. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:04cc675c-8aa5-4c74-acbe-466923589bb4.

Council of Science Editors:

Gerritse AR(. Load principles for drive mechanisms of Miter gates: Assessing suitablitliy of current codes and guidelines for drive mechanisms. [Masters Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:04cc675c-8aa5-4c74-acbe-466923589bb4

Delft University of Technology

2. Riteco, J. (author). Maeslant barrier: Alternative solution for the upgrading of the Maeslant barrier.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:0d0d0de6-4807-4ae3-8c6f-af92b1cf064b

► Additional thesis - The Maeslant barrier was the final piece of the Delta works which protects a large area of the Netherlands. However the present… (more)

▼ Additional thesis - The Maeslant barrier was the final piece of the Delta works which protects a large area of the Netherlands. However the present barrier seems to fulfil his function, several Dutch experts have doubts about the system. However the discussion on the Maeslant barrier not being safe enough refers mostly to future scenarios. Experts expect that the barrier already will not provide enough protection from storm surges as of 2070. The goal of this research is to investigate an alternative solution for the upgrading of the existing Maeslant barrier in order to make it more reliable for the future. The two functional requirements that all future solutions must fulfil are assuring enough safety against storm surges and providing enough navigation space for ships. The new waterway has to be accessible at any time during normal conditions. For the hydraulic boundary conditions future water levels are taken into account by implying the most extreme Deltascenario steem. In a variant study four different designs are worked out. Design A introduces a solution with navigation locks. This solution closes of the new waterway entirely which can be an advantage for safety reasons but also a disadvantage in terms of navigation. The second design consist of an inflatable rubber barrier like the Ramspol barrier. The mode of operation and in terms of maintenance the inflatable barrier has a lot of advantages, two of the biggest disadvantages are however the tension forces and stresses in the membrane and the fact that the dimensions exceed the largest inflatable rubber barrier by the triple. Design C consist of a new barrier with tumble gates either hydraulic or pneumatic. This design was already introduced as one of the alternatives for the existing Maeslant barrier. However these kind of gates are straightforward and simple the disadvantage is that large movable parts are placed under water which makes maintenance work laboured and expensive. The last design consists of several rising sector gates as it has already been built at the Thames in the UK. The dimensions would be in the same range and therefore a lot of the experience could be used for the design. This design however leads to fixed structures within the water way which are a hindrance for navigation. The inflatable barrier is worked out in more detail. After taking a closer look at the biggest inflatable barrier in the world, the Ramspol barrier in the Netherlands, working out general information on inflatable barriers provides the basics for the design of the new Maeslant barrier. Because of the positive experience at the Ramspol barrier a combination of water and air was chosen to be the filling material. A purely air filled barrier leads to high tension forces in the membrane that exceed the bearing capacity. By using factors between the crest-height and the base width of the clamping lines and the crest-height and the circumferential length of the membrane based on the Ramspol barrier, the initial parameters for the new Maeslant barrier could be calculated… Advisors/Committee Members: Jonkman, S.N. (mentor), F.%22%29&pagesize-30">Molenaar, W.F. (mentor).

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APA (6^th Edition):

Riteco, J. (. (2017). Maeslant barrier: Alternative solution for the upgrading of the Maeslant barrier. (Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:0d0d0de6-4807-4ae3-8c6f-af92b1cf064b

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Riteco, J (author). “Maeslant barrier: Alternative solution for the upgrading of the Maeslant barrier.” 2017. Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:0d0d0de6-4807-4ae3-8c6f-af92b1cf064b.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Riteco, J (author). “Maeslant barrier: Alternative solution for the upgrading of the Maeslant barrier.” 2017. Web. 08 Mar 2021.

Vancouver:

Riteco J(. Maeslant barrier: Alternative solution for the upgrading of the Maeslant barrier. [Internet] [Thesis]. Delft University of Technology; 2017. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:0d0d0de6-4807-4ae3-8c6f-af92b1cf064b.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Riteco J(. Maeslant barrier: Alternative solution for the upgrading of the Maeslant barrier. [Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:0d0d0de6-4807-4ae3-8c6f-af92b1cf064b

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology

3. Doeksen, J.W. (author). Gate Design For Large, High Head Locks: "The development of an innovative lock gate".

Degree: 2012, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:10298cf5-eff0-4664-ab16-980bc86dbd44

►

This master thesis researches the necessity and possibilities of new/innovative lock gate technologies for future large & high head locks, like the Panama Canal Expansion… (more)

▼

This master thesis researches the necessity and possibilities of new/innovative lock gate technologies for future large & high head locks, like the Panama Canal Expansion Project. A historical data analysis has been performed, contemplates over 220 of the worlds largest locks throughout time, analyzing the development and application of conventional lock gate technologies. From this, the conclusions have been drawn that the required lock gate dimensions of a number of future projects, fall far outside the application area of current technologies, and that it may not be assumed that conventional technologies will lead to optimal solutions at this scale. In addition, a number of aspects will be highlighted for future large & high head lock gate design, especially reliability, water consumption and its effects on the locks accessibility. A new lock gate technology has been developed specifically attuned to the future dimensions and highlighted requirements resulting into the design of: ‘The Sliding Arch Gate’, an extremely slender gate design, using (tension) arch action to transfer loads to the lock head structure, minimizing recess dimensions and water consumption. In addition, the absence of submerged moving / mechanical parts, minimizes maintenance requirements and the modular design of the gate enhances ease of maintenance, transport and manufacture. The Sliding Arch Gate has been worked out to an operational design level, using the Panama Canal Expansion Project as reference, in order to evaluate its potential performance and to make comparison with conventional technologies. From the evaluation it has been concluded that Sliding Arch Gate will require higher initial investments but that major benefits are achieved by reduced water consumption and low maintenance. The first of which can result into over $2,000 mln. in added revenues for the Panama Canal, during the commercial lifetime of the gate, due to increased lockage capacity. It has thus been concluded that new/innovative technologies, like the Sliding Arch Gate, can outperform up-scaled conventional technologies. However as the design of the Sliding Arch Gate is still in a pioneering stage, there are many optimizations to be found and uncertainties to be investigated.

Hydraulic Structures

Hydraulic Engineering

Civil Engineering and Geosciences

Advisors/Committee Members: Vrijling, J.K. (mentor), F.%22%29&pagesize-30">Molenaar, W.F. (mentor), Ostayen, R.A.J. (mentor).

Subjects/Keywords: locks; lock gate; innovation; arched Gate; arch; Panama Canal; hydrofoot; hydrostatic bearings

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Doeksen, J. W. (. (2012). Gate Design For Large, High Head Locks: "The development of an innovative lock gate". (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:10298cf5-eff0-4664-ab16-980bc86dbd44

Chicago Manual of Style (16^th Edition):

Doeksen, J W (author). “Gate Design For Large, High Head Locks: "The development of an innovative lock gate".” 2012. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:10298cf5-eff0-4664-ab16-980bc86dbd44.

MLA Handbook (7^th Edition):

Doeksen, J W (author). “Gate Design For Large, High Head Locks: "The development of an innovative lock gate".” 2012. Web. 08 Mar 2021.

Vancouver:

Doeksen JW(. Gate Design For Large, High Head Locks: "The development of an innovative lock gate". [Internet] [Masters thesis]. Delft University of Technology; 2012. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:10298cf5-eff0-4664-ab16-980bc86dbd44.

Council of Science Editors:

Doeksen JW(. Gate Design For Large, High Head Locks: "The development of an innovative lock gate". [Masters Thesis]. Delft University of Technology; 2012. Available from: http://resolver.tudelft.nl/uuid:10298cf5-eff0-4664-ab16-980bc86dbd44

Delft University of Technology

4. Hendriksen, R. (author). The floating construction method: A new method of constructing large submerged and floating structures.

Degree: 2011, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:10518aa6-82eb-4d6a-959f-6417d8033246

► Parking problems in cities become more significant every day. Parking tariffs are going through the roof and parking spaces are limited. Therefore, cities are researching… (more)

▼ Parking problems in cities become more significant every day. Parking tariffs are going through the roof and parking spaces are limited. Therefore, cities are researching alternatives for parking on ground level and underground. One of these alternatives is parking underwater. One of these cities is Amsterdam. This city ranks number 5 on the list of most expensive cities to park in Europe. To create more parking spaces, the city of Amsterdam is researching the possibility of parking garages underwater at several locations. One of these locations is the Oosterdok near the central train station. A feasibility in 2009 study showed that a parking garage underwater with 350 parking spaces and constructed with the traditional construction method is not financially feasible. [Oosterdok, 2009] This situation is used to determine whether or not a new construction method could be the solution, namely the floating construction method. With this construction method, the structure is constructed directly on the water. The base consist out of a floor of EPS and concrete. This floor floats and makes it possible to construct the rest of the structure on top. This process is shown in the figure below. The advantage is the fact that an expensive temporary construction pit isn’t needed, which normally forms 20 to 30% of the total construction costs! The floating floor consist of the patented Flexbase system and is shown in the figure below. It starts with constructing a 800mm thick EPS floor consisting of 4 layers of glass fibre reinforced EPS250. Directly on top of this EPS floor the concrete floor is poured. When this floor is hardened the formwork, consisting of EPS60 blocks, for the beam grid is placed. When the beam grid is poured and hardened, the second and last floor is constructed to end up with a floating sandwich structure. The parking garage is constructed directly on top of the Flexbase floor. The parking garage has two floors and 750 parking spaces. It is 129 meters long, 76 meters wide and 6,5 meters high. This does not include the 2,05 meter thick Flexbase floor. When the garage is finished, it still floats and has a draught of 6,05 meters. When the garage element is completed, it is immersed. Ballast tanks are placed inside the element and filled with water. When the element is at the desired depth and level, grout anchors are drilled through the floor to keep the element immersed. The ballast tanks are emptied and the garage element is coupled to the entrances for cars and pedestrians. The entrances are constructed separately. Conclusions The floating construction method is technically and financially feasible for this situation. The floating construction method is approximately 11,5% cheaper than the traditional construction method. When the benefits come exclusively from parking fees, the floating construction method becomes financially feasible for this situation with hourly parking tariffs of 2,16. This research shows that the floating construction method could be a better and cheaper alternative for traditional… Advisors/Committee Members: Vrijling, J.K. (mentor), F.%22%29&pagesize-30">Molenaar, W.F. (mentor), Peperkamp, W.J.M. (mentor).

Subjects/Keywords: Floating Structure; Floating; Construction method; Flexbase

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hendriksen, R. (. (2011). The floating construction method: A new method of constructing large submerged and floating structures. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:10518aa6-82eb-4d6a-959f-6417d8033246

Chicago Manual of Style (16^th Edition):

Hendriksen, R (author). “The floating construction method: A new method of constructing large submerged and floating structures.” 2011. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:10518aa6-82eb-4d6a-959f-6417d8033246.

MLA Handbook (7^th Edition):

Hendriksen, R (author). “The floating construction method: A new method of constructing large submerged and floating structures.” 2011. Web. 08 Mar 2021.

Vancouver:

Hendriksen R(. The floating construction method: A new method of constructing large submerged and floating structures. [Internet] [Masters thesis]. Delft University of Technology; 2011. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:10518aa6-82eb-4d6a-959f-6417d8033246.

Council of Science Editors:

Hendriksen R(. The floating construction method: A new method of constructing large submerged and floating structures. [Masters Thesis]. Delft University of Technology; 2011. Available from: http://resolver.tudelft.nl/uuid:10518aa6-82eb-4d6a-959f-6417d8033246

Delft University of Technology

5. Vermeij, D.A.A.N. (author). Flood risk reduction interventions for the New York City subway system: A research on the impact of storm surge and sea level rise on the safety against flooding in urban delta's.

Degree: 2016, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:db184167-b1b7-4dd1-b7f0-623df2352fe0

► On 29 October 2012 hurricane Sandy hit the coast of New York City. This category 1 hurricane had a devastating effect: large parts of the… (more)

▼ On 29 October 2012 hurricane Sandy hit the coast of New York City. This category 1 hurricane had a devastating effect: large parts of the city were flooded and the city was out of business for several days. An estimated total damage of 41.9 billion had occurred of which 5 billion in account of the metro system. The largest damage was to the subway (underground) on Manhattan. The main challenge of this research was to design a protection for the subway of Manhattan. The main sources of flood water are the rivers that enter the city via overflow of the river bank. Flood water enters the subway system mainly via the ventilation grates and the commuter entrances. There are not many tubes that start in a flood prone area. The tube most vulnerable for flooding is the Steinway tube of the Flushing line, running from Queens under the East River to Grand Central Station on Manhattan. The Steinway tube has 200,000 daily users and was flooded during Sandy via the ventilation grates on 50th Avenue. The future flood levels in this report take the 90th percentile sea level rise (SLR) projection into account as calculated by the NPCC. The safety level is currently 1/60-years, but decreases to 1/5-years is SLR projections in 2080 are reached. Long Island City is modelled as a storage basin where water enters via overflow of the East River Bank. The inflow of the 100 to 10,000 year floods is modelled as a harmonic tidal wave. The results show that the water level in the basin is equal to the storm surge flood level in most cases. Combined with surface elevation data, the damage to the three subsystems Long Island City, the Steinway tube and the subway system of Manhattan shows that the risk is significant. At the considered flood levels, the Flushing line will flood via the start of the Steinway tube. The Steinway tube inflow model shows whether the flood water reaches Grand Central Station on Manhattan. A 1/500-years flood in 2080 results in a total damage of 2,571 million to all three systems. Compared to protection of only the Steinway tube, the multifunctional bank protection at the East River, called the Greenline, adds the most value to Long Island City. Considering the political and economic feasibility, the Greenline is not designed into detail. The Steinway Flood Gate scores the highest on benefit/costs-ratio, while the protection of Manhattan only is economic not feasible: the net present value is negative for each design level. The Steinway tube is protected by closing the ventilation grates and commuter entrances with covers that are designed by a third party. Directly in front of the Steinway tube, the Steinway Flood Gate is designed. This vertical lifting gate has a door of 6.00 meters high and 7.70 meters wide. Two towers of 12 meters support this flood door. The door is able to move in horizontal direction to enable the sealing of the tube. The Steinway Flood Gate is a perfect long-term flood protection that can be realized in the near future. It is an economically attractive investment that improves the safety of… Advisors/Committee Members: Jonkman, S.N. (mentor), F.%22%29&pagesize-30">Molenaar, W.F. (mentor).

Subjects/Keywords: Flood risk; New York City; Hydraulic structures; metro; subway; protection

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Vermeij, D. A. A. N. (. (2016). Flood risk reduction interventions for the New York City subway system: A research on the impact of storm surge and sea level rise on the safety against flooding in urban delta's. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:db184167-b1b7-4dd1-b7f0-623df2352fe0

Chicago Manual of Style (16^th Edition):

Vermeij, D A A N (author). “Flood risk reduction interventions for the New York City subway system: A research on the impact of storm surge and sea level rise on the safety against flooding in urban delta's.” 2016. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:db184167-b1b7-4dd1-b7f0-623df2352fe0.

MLA Handbook (7^th Edition):

Vermeij, D A A N (author). “Flood risk reduction interventions for the New York City subway system: A research on the impact of storm surge and sea level rise on the safety against flooding in urban delta's.” 2016. Web. 08 Mar 2021.

Vancouver:

Vermeij DAAN(. Flood risk reduction interventions for the New York City subway system: A research on the impact of storm surge and sea level rise on the safety against flooding in urban delta's. [Internet] [Masters thesis]. Delft University of Technology; 2016. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:db184167-b1b7-4dd1-b7f0-623df2352fe0.

Council of Science Editors:

Vermeij DAAN(. Flood risk reduction interventions for the New York City subway system: A research on the impact of storm surge and sea level rise on the safety against flooding in urban delta's. [Masters Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:db184167-b1b7-4dd1-b7f0-623df2352fe0

Delft University of Technology

6. Pham, L.A. (author). Impacts of waves and sea level rise on ports due to global climate change: Viet Nam sea ports case study.

Degree: 2012, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:725ab328-bac6-4576-9c32-081fef5dee8e

►

Viet Nam lies in the region of direct impact of sea level rise and climate change, especially in the East Sea where branches of Me… (more)

Subjects/Keywords: sea level rise; Vietnam; Port construction

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Pham, L. A. (. (2012). Impacts of waves and sea level rise on ports due to global climate change: Viet Nam sea ports case study. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:725ab328-bac6-4576-9c32-081fef5dee8e

Chicago Manual of Style (16^th Edition):

Pham, L A (author). “Impacts of waves and sea level rise on ports due to global climate change: Viet Nam sea ports case study.” 2012. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:725ab328-bac6-4576-9c32-081fef5dee8e.

MLA Handbook (7^th Edition):

Pham, L A (author). “Impacts of waves and sea level rise on ports due to global climate change: Viet Nam sea ports case study.” 2012. Web. 08 Mar 2021.

Vancouver:

Pham LA(. Impacts of waves and sea level rise on ports due to global climate change: Viet Nam sea ports case study. [Internet] [Masters thesis]. Delft University of Technology; 2012. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:725ab328-bac6-4576-9c32-081fef5dee8e.

Council of Science Editors:

Pham LA(. Impacts of waves and sea level rise on ports due to global climate change: Viet Nam sea ports case study. [Masters Thesis]. Delft University of Technology; 2012. Available from: http://resolver.tudelft.nl/uuid:725ab328-bac6-4576-9c32-081fef5dee8e

Delft University of Technology

7. Korswagen Eguren, P.A. (author). Structural Damage to Masonry Housing due to Earthquake-Flood Multi-Hazards.

Degree: 2016, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:26b0b336-527a-43a8-a98f-9cc7555765e7

► The possibility of multi-hazards, the occurrence of two or more (natural) hazards at once or shortly after another in the same location, can lead to… (more)

▼ The possibility of multi-hazards, the occurrence of two or more (natural) hazards at once or shortly after another in the same location, can lead to an increased risk of structural damage and life loss. In the Netherlands, seismically-unprepared houses are especially vulnerable to newly expected earthquakes in the region of Groningen. These seismic events have the potential to compromise levees in the area, in a way that can lead to flooding. The flood, in combination with its triggering earthquake, are the multihazard that is closely studied in this report; damage is assessed to typical unreinforced masonry houses standing close to the aforementioned levees in the Groningen area. In the study, a framework is introduced to analyse damage and its probability for a study case, which consists of a house with longitudinally-oriented precast hollow concrete slabs resting on 100mm-thick calcium-silicate load-bearing masonry walls, and longitudinal in-filled masonry walls. This house is located behind a levee, for which the failure probability due to earthquakes has been characterised by the study of Zuada (2014). First, earthquake damage is assessed by obtaining the lateral displacement of the house in response to the earthquake’s peak ground acceleration via a finite element model and a non-linear time history analysis. And, relating the computed displacement to the amount of cracking and cracked walls as observed from a generated pushover curve that depicts loss of lateral resistance against lateral displacement. For each possible damage state of the house, a set of parameters that describe its weakening is defined. Then, the impact of various flood actions are analysed on the potentially weakened structural cases. Firstly, the flood resulting from a levee breach is studied with a FEM hydraulic model in order to obtain the probable flood depth and flow velocity, related to initial probabilistic parameters for the water level and the characteristics of the breach. Secondly, the interaction of debris (such as trees and vehicles) with the flood and the structure is studied. Then, the loads generated by the flood and the potential impact of debris are evaluated on a non-linear FEM of a wall of the house for an appraisal of damage. Finally, the probability for the house to be in a particular damage state as a result of the earthquake is computed and joined to the probability of the flood further damaging the house and the failure probability of the levee. From this, fragility curves are elaborated detailing the probability of damage as a function of earthquake ground acceleration. For a period of fifty years, the risk of structural collapse for the case study house was computed at 1/25. The impact of debris was observed to a be an often overlooked flood action with a paramount influence on structural damage. For the medially intense flood due to a levee breach with a water level difference of around two meters, all collapse cases due to flood actions were due to debris impact. Severe earthquake damage was observed to be a… Advisors/Committee Members: Jonkman, S.N. (mentor), F.%22%29&pagesize-30">Molenaar, W.F. (mentor), Terwel, K.C. (mentor).

Subjects/Keywords: earthquake; flood, masonry; framework; probability; damage; fragility; FEM; Maple; multi-hazard

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APA (6^th Edition):

Korswagen Eguren, P. A. (. (2016). Structural Damage to Masonry Housing due to Earthquake-Flood Multi-Hazards. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:26b0b336-527a-43a8-a98f-9cc7555765e7

Chicago Manual of Style (16^th Edition):

Korswagen Eguren, P A (author). “Structural Damage to Masonry Housing due to Earthquake-Flood Multi-Hazards.” 2016. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:26b0b336-527a-43a8-a98f-9cc7555765e7.

MLA Handbook (7^th Edition):

Korswagen Eguren, P A (author). “Structural Damage to Masonry Housing due to Earthquake-Flood Multi-Hazards.” 2016. Web. 08 Mar 2021.

Vancouver:

Korswagen Eguren PA(. Structural Damage to Masonry Housing due to Earthquake-Flood Multi-Hazards. [Internet] [Masters thesis]. Delft University of Technology; 2016. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:26b0b336-527a-43a8-a98f-9cc7555765e7.

Council of Science Editors:

Korswagen Eguren PA(. Structural Damage to Masonry Housing due to Earthquake-Flood Multi-Hazards. [Masters Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:26b0b336-527a-43a8-a98f-9cc7555765e7

Delft University of Technology

8. Korevaar, T.J.A. (author). Vertical Flow-Induced Vibrations of Valves in Navigation Locks.

Degree: 2016, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:12a56c3e-e1b6-4e07-b351-afd5bc08cbea

► Navigation locks are used to transport vessels between waterways with different water levels. In the nearby future many navigation locks will be renovated or replaced.… (more)

▼ Navigation locks are used to transport vessels between waterways with different water levels. In the nearby future many navigation locks will be renovated or replaced. During the design of a new lock still some unknown factors are encountered. One of these factors is the vibration of the valve. The valve is part of the filling and emptying system that is responsible for the levelling of the water in the lock chamber. The most used valve type is a vertical-lift valve. During the filling and emptying of the lock, water flows with high velocity underneath the valve. The flow of water can cause vibrations. These vibrations are called flow-induced vibrations and could lead to failure of the valve system. Possible failures are for example that the operating machinery will not be able to open the valve or that the valve will hit other elements due to the vibrations. As a consequence the lock gate complex cannot meet its requirements anymore. Several types of flow-induced vibrations can be distinguished. This distinction is based on the cause of the vibration. This research only focussed on vibrations due to turbulence and instability of the flow. The above-mentioned types can be experienced in two directions. The two directions are in-flow (horizontal in the direction of the flow) and cross-flow (perpendicular to the direction of the flow). A valve is more likely to vibrate in a vertical direction than a horizontal direction, because the majority of the valves is positioned in a niche of a gate or culvert. Currently not much information regarding the flow-induced vibrations due to turbulence or instability of the water flow is available and the information that is available is often out dated. The shape could have an effect on the flow-induced vibrations. This seal has to ensure the water tightness of the valve. No research has been done on the effects of the seal shapes, which are used nowadays, on the dynamic behaviour. Therefore, the information of the effect of seal shapes as used in practice is missing. In the current situation a guideline involving the natural frequency of the valve system is used. This guideline states that the natural frequency of the valve has to be larger than three times the excitation frequency. Therefore, the main research question of this research is: What is the effect of the shape of the lower edge seal on the vertical flow-induced vibrations of a valve in a filling and emptying culvert? The vibration phenomena have been investigated by means of a physical model. A simplified scale model of the valve is constructed and tested in a current flume under varying conditions. The varying parameters during these tests are the flow velocity underneath the valve, the stiffness of the vertical suspension, the gate opening underneath the valve and the shape of the lower edge seal. Four different seal shapes have been tested. The tests have been executed under steady state conditions. In addition to the steady state tests, free-decay tests (to determine the natural frequency and damping) and tests to… Advisors/Committee Members: Uijttewaal, W.S.J. (mentor), F.%22%29&pagesize-30">Molenaar, W.F. (mentor), Hofland, B. (mentor), Van Almen, M. (mentor).

Subjects/Keywords: Flow Instability; Flow-Induced Vibrations; Valve; Physical Model Test

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Korevaar, T. J. A. (. (2016). Vertical Flow-Induced Vibrations of Valves in Navigation Locks. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:12a56c3e-e1b6-4e07-b351-afd5bc08cbea

Chicago Manual of Style (16^th Edition):

Korevaar, T J A (author). “Vertical Flow-Induced Vibrations of Valves in Navigation Locks.” 2016. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:12a56c3e-e1b6-4e07-b351-afd5bc08cbea.

MLA Handbook (7^th Edition):

Korevaar, T J A (author). “Vertical Flow-Induced Vibrations of Valves in Navigation Locks.” 2016. Web. 08 Mar 2021.

Vancouver:

Korevaar TJA(. Vertical Flow-Induced Vibrations of Valves in Navigation Locks. [Internet] [Masters thesis]. Delft University of Technology; 2016. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:12a56c3e-e1b6-4e07-b351-afd5bc08cbea.

Council of Science Editors:

Korevaar TJA(. Vertical Flow-Induced Vibrations of Valves in Navigation Locks. [Masters Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:12a56c3e-e1b6-4e07-b351-afd5bc08cbea

Delft University of Technology

9. Tieleman, O.C. (author). The dynamic behaviour of pump gates in the Afsluitdijk: Application of semi-analytical fluid-structure interaction models.

Degree: 2016, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:d68f9483-e374-4c38-ace3-89594e38daf0

► As part of the Afsluitdijk project the discharge capacity, which is currently facilitated by two sluice complexes, is increased to cope with future sea level… (more)

▼ As part of the Afsluitdijk project the discharge capacity, which is currently facilitated by two sluice complexes, is increased to cope with future sea level rise. It was decided to realise this by an innovative solution: the pump gate. The steel lifting gates, each containing three pumps, will be implemented in the existing sluice complex in phases, expecting a total of thirteen by the year 2050. This concept provides the possibility of pumping when necessary without hampering the discharge capacity during gravity flow, in which case the gates are lifted. The gates were designed to withstand quasi-static loads. Mainly due to the presence of the pumps, which have a high weight and require limited vibrations, the dynamic behaviour of the gate may lead to more strict design requirements. Two reference designs are investigated: the regular, and flood defence pump gate. The latter is designed to act as part of the primary flood defence, and is therefore significantly more robust. The analysis of the pump gate is limited to three components: the gate structure with its supports, pumps, and fluid. Standard expressions for the hydrodynamic pressures do not apply to the pump gate and surrounding fluid, mainly due to the three-dimensional vibration shape of the gate and the presence of the pumps. General methods or numeric models to quantify vibrations are not readily available for a continuous system with interacting gate, pumps, and fluid. In this thesis, a method is developed to determine the dynamic behaviour of gate-fluid systems confined by sluices. This method is based on a frequency domain semi-analytical coupled modal analysis, able to directly solve the behaviour of gate and fluid for the linearized equations. Several fluid schematizations are found in literature taking surface waves, compressibility, or neither into consideration. The validity of these schematizations was investigated for a wide range of water depths and excitation frequencies. Distinct regions were found in which these physical processes do or do not have an effect on the hydrodynamic mass. The so-called `transition region' is characterised by the absence of both compressibility and surface wave effects. The hydrodynamic mass is therefore frequency-independent in this region and no hydrodynamic damping is present. The response of the pump gate reference designs is quantified by a three-dimensional plate model, based on previously described method. Both designs have considerably higher eigenfrequencies than those corresponding to regular wave excitation. For the Den Oever case, the quasi-static approach therefore suffices when considering wave loads. This is not the case for excitations originating from the pumps, which relate to a wider and higher frequency range. As a consequence of the preliminary design phase, exact pump specifications are not available. Results are therefore based on a pump envelope of possible excitations and presented as risks. These apply to the Den Oever gate designs, but are also relevant to the pump gate concept in… Advisors/Committee Members: Jonkman, S.N. (mentor), F.%22%29&pagesize-30">Molenaar, W.F. (mentor), Metrikine, A.V. (mentor), Labeur, R.J. (mentor), Tsouvalas, A. (mentor).

Subjects/Keywords: Fluid Structure Interaction; Vibrations; Gates; Pumps; Pump gate; Afsluitdijk; Den Oever; Structural Dynamics; Fluid Dynamics

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APA (6^th Edition):

Tieleman, O. C. (. (2016). The dynamic behaviour of pump gates in the Afsluitdijk: Application of semi-analytical fluid-structure interaction models. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:d68f9483-e374-4c38-ace3-89594e38daf0

Chicago Manual of Style (16^th Edition):

Tieleman, O C (author). “The dynamic behaviour of pump gates in the Afsluitdijk: Application of semi-analytical fluid-structure interaction models.” 2016. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:d68f9483-e374-4c38-ace3-89594e38daf0.

MLA Handbook (7^th Edition):

Tieleman, O C (author). “The dynamic behaviour of pump gates in the Afsluitdijk: Application of semi-analytical fluid-structure interaction models.” 2016. Web. 08 Mar 2021.

Vancouver:

Tieleman OC(. The dynamic behaviour of pump gates in the Afsluitdijk: Application of semi-analytical fluid-structure interaction models. [Internet] [Masters thesis]. Delft University of Technology; 2016. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:d68f9483-e374-4c38-ace3-89594e38daf0.

Council of Science Editors:

Tieleman OC(. The dynamic behaviour of pump gates in the Afsluitdijk: Application of semi-analytical fluid-structure interaction models. [Masters Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:d68f9483-e374-4c38-ace3-89594e38daf0

Delft University of Technology

10. Hinborch, M. (author). Flood defence town centre Dordrecht.

Degree: 2011, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:dfac8bb7-3c53-4bb9-8da6-267dc350d83f

► The flood defence in the historical town centre of Dordrecht is situated in the Voorstraat, which is a busy shopping street. The dike itself is… (more)

▼ The flood defence in the historical town centre of Dordrecht is situated in the Voorstraat, which is a busy shopping street. The dike itself is too low at some places, but with a system of flood stop logs in the doors of buildings along the street some extra height can be reached. The reliability of the stop log system is doubted however, so plans for strengthening the flood defence are needed. One important issue for strengthening the flood defence is the climate change. Warming of the earth would lead to sea level rise and higher river discharges. The rate of climate change is unsure however and various scenarios have been made which range from minor to major changes. The water level at Dordrecht is determined by both the sea level and river discharges, so climate change could have severe consequences for the safety against flooding of Dordrecht. When the advice of the Delta Committee is followed, the safety standards of the dike rings should be heightened and much higher water levels have to be expected. Also the plans for the Rijnmond-Drechtsteden area are important for the strategy of strengthening the flood defence in the town centre of Dordrecht. A system of barriers in this area could protect Dordrecht against flooding, but it is also possible that strengthening the flood defence in the town centre of Dordrecht is still needed. Strengthening the flood defence in the Voorstraat is difficult. Therefore also a new flood defence through the part of the town centre which now lies outside the flood defence is considered. Various alignments are possible, of which a flood defence along the river, which protects the entire town centre against flooding has been elaborated. This new flood defence will consist of an automatically floating barrier in the quays. Under normal circumstances this barrier is invisible and when the water level rises the barrier automatically floats up. At one part of the alignment buildings stand with the facades directly along the river. Here a boulevard through the river will be made, separated from the buildings. By integrating the floating barrier in the structure the boulevard can be kept low. Inside the flood defence there is place for a marina and a swimming area. At five places in the alignment a harbour has to be crossed. For this purpose at four places a flood gate will be made, which under normal circumstances lies at the bottom, so it is not visible and ships can pass. When a flood is expected the gates are closed. At one place, at the largest harbour crossing, a multi-functional barrier will be made. This barrier consists of two gates which stand horizontally when retaining a flood. After the flood the gates are lifted and rotated to form a bridge and viewing platform over the harbour. Because of the floating barrier the largest part of the new flood defence will not be visible under normal circumstances, so it will have little impact on the historical town centre. Therefore it is a good and sustainable solution for protecting the entire town centre of Dordrecht against flooding… Advisors/Committee Members: Vrijling, J.K. (mentor), Meyer, V.J. (mentor), F.%22%29&pagesize-30">Molenaar, W.F. (mentor), Waals, J. (mentor).

Subjects/Keywords: flood defence; Dordrecht; Voorstraat; climate change; floating barrier; barrier

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APA (6^th Edition):

Hinborch, M. (. (2011). Flood defence town centre Dordrecht. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:dfac8bb7-3c53-4bb9-8da6-267dc350d83f

Chicago Manual of Style (16^th Edition):

Hinborch, M (author). “Flood defence town centre Dordrecht.” 2011. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:dfac8bb7-3c53-4bb9-8da6-267dc350d83f.

MLA Handbook (7^th Edition):

Hinborch, M (author). “Flood defence town centre Dordrecht.” 2011. Web. 08 Mar 2021.

Vancouver:

Hinborch M(. Flood defence town centre Dordrecht. [Internet] [Masters thesis]. Delft University of Technology; 2011. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:dfac8bb7-3c53-4bb9-8da6-267dc350d83f.

Council of Science Editors:

Hinborch M(. Flood defence town centre Dordrecht. [Masters Thesis]. Delft University of Technology; 2011. Available from: http://resolver.tudelft.nl/uuid:dfac8bb7-3c53-4bb9-8da6-267dc350d83f

11. Pawirokromo, J.S.W. (author). Design of a flood proof storage tank.

Degree: 2014, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:5025bea2-708c-415d-ae4a-97a0bd05f75a

►

Some storage tank terminals located in hurricane prone regions were heavily struck by hurricanes. An example is the storage tank terminal of Stolthaven Terminals (Stolt-Nielsen… (more)

▼

Some storage tank terminals located in hurricane prone regions were heavily struck by hurricanes. An example is the storage tank terminal of Stolthaven Terminals (Stolt-Nielsen Limited) which is located in New-Orleans and was severely struck by Hurricane Katrina and Isaac. Damage to the terminal was caused by high wind pressures, but mainly due to flooding of the terminal caused by the overflowing levee. The storage tanks did not possess sufficient weight to counterbalance the buoyancy load generated by the flood. Due to this, storage tanks were lifted off their foundation and damage occurred to the bottom plate and the connections. Chemical liquid stored in the tank had now found its way into the environment. This disaster resulted in high costs and insurance claims from the contamination. The problem can be formulated as: "How can storage tank damage and chemical spill best be prevented during a flood?" Alternative solutions for a flood proof storage tank are presented which are applicable to the still-to-be-built new terminal next to the present terminal. Also a combination of the flood proof tank and management of tank operations is considered. 3 of the alternatives seem structurally feasible and are further elaborated in the report. These are: 1. The use of a steel-concrete-steel sandwich slab (SCS slab) inside the tank. This consists of 2 steel plates connected to a concrete core by means of shear studs. The slab should have sufficient weight to counteract the buoyancy load. [Tank alternative A] 2. Anchoring the area of the bottom plate of the tank to the concrete foundation by means of shear studs. [Tank alternative B] 3. Constructing a floating tank. This tank is provided with guiding piles, which allows the tank to go up and down, but keeps the tank at one location. [Tank alternative C] A simplified cost-benefit-analysis (CBA) is done to compare the alternatives to one of the basic solutions like the floodwall. The flood proof storage tank is compared to the basic solution (like the flood wall) a flexible alternative, because the tank does not need to be protected against floods.

Hydraulic Structures

Structural Engineering

Civil Engineering and Geosciences

Advisors/Committee Members: Jonkman, S.N. (mentor), F.%22%29&pagesize-30">Molenaar, W.F. (mentor), Abspoel, R. (mentor), F.%22%29&pagesize-30">Mooyaart, L.F. (mentor).

Subjects/Keywords: storage tanks; flood; hurricane; damage; chemical spill

11 more images…

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APA (6^th Edition):

Pawirokromo, J. S. W. (. (2014). Design of a flood proof storage tank. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:5025bea2-708c-415d-ae4a-97a0bd05f75a

Chicago Manual of Style (16^th Edition):

Pawirokromo, J S W (author). “Design of a flood proof storage tank.” 2014. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:5025bea2-708c-415d-ae4a-97a0bd05f75a.

MLA Handbook (7^th Edition):

Pawirokromo, J S W (author). “Design of a flood proof storage tank.” 2014. Web. 08 Mar 2021.

Vancouver:

Pawirokromo JSW(. Design of a flood proof storage tank. [Internet] [Masters thesis]. Delft University of Technology; 2014. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:5025bea2-708c-415d-ae4a-97a0bd05f75a.

Council of Science Editors:

Pawirokromo JSW(. Design of a flood proof storage tank. [Masters Thesis]. Delft University of Technology; 2014. Available from: http://resolver.tudelft.nl/uuid:5025bea2-708c-415d-ae4a-97a0bd05f75a

Delft University of Technology

12. Van Eijk, T.F.A. (author). Gravity Based Foundation: Scour and design optimisation.

Degree: 2016, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:515d1962-a501-4d55-8140-a704af30ede8

►

Within Royal HaskoningDHV an innovative concept is thought to be feasible as a new foundation for larger wind turbines in deeper waters. In this thesis… (more)

Subjects/Keywords: scour; GBS; Gravity Based Structure; offshore wind turbine; hydrodynamic loads; bed shear stress amplification; FinLab

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Van Eijk, T. F. A. (. (2016). Gravity Based Foundation: Scour and design optimisation. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:515d1962-a501-4d55-8140-a704af30ede8

Chicago Manual of Style (16^th Edition):

Van Eijk, T F A (author). “Gravity Based Foundation: Scour and design optimisation.” 2016. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:515d1962-a501-4d55-8140-a704af30ede8.

MLA Handbook (7^th Edition):

Van Eijk, T F A (author). “Gravity Based Foundation: Scour and design optimisation.” 2016. Web. 08 Mar 2021.

Vancouver:

Van Eijk TFA(. Gravity Based Foundation: Scour and design optimisation. [Internet] [Masters thesis]. Delft University of Technology; 2016. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:515d1962-a501-4d55-8140-a704af30ede8.

Council of Science Editors:

Van Eijk TFA(. Gravity Based Foundation: Scour and design optimisation. [Masters Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:515d1962-a501-4d55-8140-a704af30ede8

Delft University of Technology

13. Heemskerk, P.W.M. (author). Technical feasibility of the Tilting Lock: Structural and morphological analysis of the trench required for the Tilting Lock in a case study at the Haringvliet bridge.

Degree: 2016, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:5162a060-b798-4165-ae24-5238cba1f63e

►

The Tilting Lock is an innovative solution for locations where road traffic crosses marine traffic overhead by a bridge. The occurrence of traffic jams at… (more)

Subjects/Keywords: Tilting Lock; Haringvlietbrug; Haringvliet estuary; Shipping Lock; New concept

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Heemskerk, P. W. M. (. (2016). Technical feasibility of the Tilting Lock: Structural and morphological analysis of the trench required for the Tilting Lock in a case study at the Haringvliet bridge. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:5162a060-b798-4165-ae24-5238cba1f63e

Chicago Manual of Style (16^th Edition):

Heemskerk, P W M (author). “Technical feasibility of the Tilting Lock: Structural and morphological analysis of the trench required for the Tilting Lock in a case study at the Haringvliet bridge.” 2016. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:5162a060-b798-4165-ae24-5238cba1f63e.

MLA Handbook (7^th Edition):

Heemskerk, P W M (author). “Technical feasibility of the Tilting Lock: Structural and morphological analysis of the trench required for the Tilting Lock in a case study at the Haringvliet bridge.” 2016. Web. 08 Mar 2021.

Vancouver:

Heemskerk PWM(. Technical feasibility of the Tilting Lock: Structural and morphological analysis of the trench required for the Tilting Lock in a case study at the Haringvliet bridge. [Internet] [Masters thesis]. Delft University of Technology; 2016. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:5162a060-b798-4165-ae24-5238cba1f63e.

Council of Science Editors:

Heemskerk PWM(. Technical feasibility of the Tilting Lock: Structural and morphological analysis of the trench required for the Tilting Lock in a case study at the Haringvliet bridge. [Masters Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:5162a060-b798-4165-ae24-5238cba1f63e

Delft University of Technology

14. Timmers, J.J. (author). Technical feasibility of a demountable floating body for a demountable stadium.

Degree: 2013, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:5461434d-2389-48e6-818b-4ff888af38f3

►

Stadiums which are built for large events like, the Olympic Games and the FIFA World Cup are often not used after the events. Next to… (more)

Subjects/Keywords: floating; demountable; portable; stadium

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APA (6^th Edition):

Timmers, J. J. (. (2013). Technical feasibility of a demountable floating body for a demountable stadium. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:5461434d-2389-48e6-818b-4ff888af38f3

Chicago Manual of Style (16^th Edition):

Timmers, J J (author). “Technical feasibility of a demountable floating body for a demountable stadium.” 2013. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:5461434d-2389-48e6-818b-4ff888af38f3.

MLA Handbook (7^th Edition):

Timmers, J J (author). “Technical feasibility of a demountable floating body for a demountable stadium.” 2013. Web. 08 Mar 2021.

Vancouver:

Timmers JJ(. Technical feasibility of a demountable floating body for a demountable stadium. [Internet] [Masters thesis]. Delft University of Technology; 2013. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:5461434d-2389-48e6-818b-4ff888af38f3.

Council of Science Editors:

Timmers JJ(. Technical feasibility of a demountable floating body for a demountable stadium. [Masters Thesis]. Delft University of Technology; 2013. Available from: http://resolver.tudelft.nl/uuid:5461434d-2389-48e6-818b-4ff888af38f3

Delft University of Technology

15. Smaling, H.W. (author). Hydrodynamic loading on the shaft of a gravity based offshore wind turbine.

Degree: 2014, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:7b697465-7e26-48c4-b53f-efbd835f1997

► Gravity based support structure By a joint venture of BAM and Van Oord an innovative type of Gravity Based Structure (GBS) for an offshore wind… (more)

▼ Gravity based support structure By a joint venture of BAM and Van Oord an innovative type of Gravity Based Structure (GBS) for an offshore wind turbine was developed. The GBS consist of a concrete caisson and a steel shaft. The applicable water depth range is between 35 and 60m. Hydrodynamic loading on the shaft In order to optimize the support structure, the hydrodynamic loading on the steel shaft is investigated. Previous studies with a CFD package showed an increase of the load on the shaft with a factor 2 compared to the Morison equation. The hypothesis is that the presence of the caisson is responsible for this increase. Therefore the (numerical) CFD model FinLab is used to investigate the influence of the caisson on the wave forces on the steel shaft. The influence of the caisson is investigated within FinLab for the extreme wave (ULS) and for two relative moderate waves (FLS). The presence of the caisson leads to an increase of the maximal horizontal force on the shaft of about 20%. The bending moment cycle (important for fatigue) does not change significantly. It is concluded that the caisson is not responsible for the increase of a factor 2. However, while investigating the influence of the caisson, for the shaft a comparison with the Morison equation is made. It is found that FinLab gives much higher forces for the ULS wave (a 75% higher maximal horizontal force on the shaft) than the Morison equation. By also interpreting the results of the FLS waves there seems to be a relation with the degree of non-linearity of the wave. Different possible causes for the difference are discussed. Those causes give a possible explanation why the Morison equation would be less accurate for a highly non-linear wave. It is however recommended to calibrate the outcomes of FinLab with experimental data. Influence of the hydrodynamic loading analysis on the design The influence of the higher wave forces obtained with FinLab on the design of the shaft is investigated by means of a case study. By performing a FLS and ULS analysis the required dimensions of the shaft can be determined. The FLS analysis is based on a simplified method to be used for pre-design only. With respect to fatigue (FLS), the higher loads found by FinLab for highly non-linear waves do not result in a higher fatigue load. This has to do with the small probability of occurrence of highly non-linear waves. With respect to the extreme event (ULS) the strong increase in bending moment due to waves found by FinLab (+120%) results in a 26% higher total bending moment (wind+waves). Conclusions The most important conclusions of this research are that 1) The caisson does not significantly influence the ULS and FLS analysis 2) The Morison equation gives lower wave forces than an analysis with FinLab. For further design these conclusions have the implication that the caisson does not have to be part of the structural schematisation when the wave loads are determined. For the FLS waves most likely the Morison equation can be used, which has large benefits for the… Advisors/Committee Members: Jonkman, S.N. (mentor), F.%22%29&pagesize-30">Molenaar, W.F. (mentor), Labeur, R.J. (mentor), Segeren, M.L.A. (mentor), Ten Oever, E. (mentor).

Subjects/Keywords: hydrodynamic; offshore wind turbine; FinLab; gravity base structure; GBS

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APA (6^th Edition):

Smaling, H. W. (. (2014). Hydrodynamic loading on the shaft of a gravity based offshore wind turbine. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:7b697465-7e26-48c4-b53f-efbd835f1997

Chicago Manual of Style (16^th Edition):

Smaling, H W (author). “Hydrodynamic loading on the shaft of a gravity based offshore wind turbine.” 2014. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:7b697465-7e26-48c4-b53f-efbd835f1997.

MLA Handbook (7^th Edition):

Smaling, H W (author). “Hydrodynamic loading on the shaft of a gravity based offshore wind turbine.” 2014. Web. 08 Mar 2021.

Vancouver:

Smaling HW(. Hydrodynamic loading on the shaft of a gravity based offshore wind turbine. [Internet] [Masters thesis]. Delft University of Technology; 2014. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:7b697465-7e26-48c4-b53f-efbd835f1997.

Council of Science Editors:

Smaling HW(. Hydrodynamic loading on the shaft of a gravity based offshore wind turbine. [Masters Thesis]. Delft University of Technology; 2014. Available from: http://resolver.tudelft.nl/uuid:7b697465-7e26-48c4-b53f-efbd835f1997

Delft University of Technology

16. Cornelissen, D. (author). Robustness quantification for navigation locks that are part of the primary flood defense: A study into the effect of increasing the reliability requirement of structural elements on the robustness of the structural system.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:8954d4e8-2cf1-4f05-b850-3cffc68966b1

►

Robustness is a hard-to-grip concept within engineering. This master thesis uses a framework to quantify the level of robustness that has been proposed by the… (more)

Subjects/Keywords: Robustness; reliability requirement; navigation lock; flood defense; redundancy

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Cornelissen, D. (. (2017). Robustness quantification for navigation locks that are part of the primary flood defense: A study into the effect of increasing the reliability requirement of structural elements on the robustness of the structural system. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:8954d4e8-2cf1-4f05-b850-3cffc68966b1

Chicago Manual of Style (16^th Edition):

Cornelissen, D (author). “Robustness quantification for navigation locks that are part of the primary flood defense: A study into the effect of increasing the reliability requirement of structural elements on the robustness of the structural system.” 2017. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:8954d4e8-2cf1-4f05-b850-3cffc68966b1.

MLA Handbook (7^th Edition):

Cornelissen, D (author). “Robustness quantification for navigation locks that are part of the primary flood defense: A study into the effect of increasing the reliability requirement of structural elements on the robustness of the structural system.” 2017. Web. 08 Mar 2021.

Vancouver:

Cornelissen D(. Robustness quantification for navigation locks that are part of the primary flood defense: A study into the effect of increasing the reliability requirement of structural elements on the robustness of the structural system. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:8954d4e8-2cf1-4f05-b850-3cffc68966b1.

Council of Science Editors:

Cornelissen D(. Robustness quantification for navigation locks that are part of the primary flood defense: A study into the effect of increasing the reliability requirement of structural elements on the robustness of the structural system. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:8954d4e8-2cf1-4f05-b850-3cffc68966b1

Delft University of Technology

17. Hofland, F.P.J. (author). Optimal traffic flow at the IJ, Amsterdam: Investigation of the influence of the Java bridge and the Stenen Hoofd bridge on the traffic flow at the IJ in 2025 from the perspective of the recreational fleet.

Degree: 2016, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:65558b94-a2b9-4d8d-aabd-6194349d4902

► The city of Amsterdam increases with approximately 10,000 inhabitants per year and Amsterdam-North is strongly under development attracting housing, employment and (re)creational activities. This is… (more)

▼ The city of Amsterdam increases with approximately 10,000 inhabitants per year and Amsterdam-North is strongly under development attracting housing, employment and (re)creational activities. This is expected to induce a growth of 65% in pedestrians and cyclists, referred to as slow traffic. crossing the river IJ in 2025. The city ferry system, that currently facilitates the connection between the river banks for slow traffic, has almost reached its maximum. Therefore, the connection between the river banks of the IJ needs to be improved in order to meet the future demand of slow traffic by guaranteeing a fast and safe connection. This research investigates the possibility of bridges at the Java-island and the Stenen Hoofd providing a continuous available connection for slow traffic, considering the area between the Stenen Hoofd and the Schellingwouderbridge. The main goal is to determine the influence of the Java bridge and the Stenen Hoofd bridge on the passage time of the recreational fleet on water and pedestrians and cyclists crossing the bridges in 2025. As this is influenced by the bridge opening regime applied to these bridges, the optimal bridge opening regime is determined in case the Java bridge and/or the Stenen Hoofd bridge are present at the IJ. Finding the optimal bridge opening regime is an optimization process that is done by defining, evaluating and improving the performance of a certain bridge opening regime. The performance of a certain bridge opening regime is determined by executing simulations with SIVAK II. This model simulates the behaviour of the traffic flow of both vessels and road traffic within a network of (inland) waterways including hydraulic structures, like bridges. If the optimal bridge opening regime is applied to the Java bridge and the Stenen Hoofd bridge, the following can be concluded. The delay in travel time of the recreational fleet navigating between the Stenen Hoofd and the Schellingwouderbidge depends on the number of bridges. This delay can increase up to 14 minutes if both the Java bridge and the Stenen Hoofd bridge are present. An average number of four vessels has to wait prior to passing a bridge, which can increase up to 15. The mean waiting time for slow traffic, when being halted during bridge opening operations, amounts approximately five minutes. This corresponds with around 120 pedestrians and cyclists on average, which can increase up to 500, to be halted during a bridge opening operation. Concerning the influence of the presence of the Java bridge and the Stenen Hoofd bridge, it can be stated that the efficiency of the navigation flow of the recreational fleet increases when the number of bridges at the IJ is reduced. Furthermore, it can be stated that pedestrians and cyclists significantly benefit from the presence of bridges. As this study focuses on the impact of the optimal bridge opening regime on the navigation flow of the recreational fleet and slow traffic only, it is recommended to take other criteria into account as well when deciding on the number… Advisors/Committee Members: Vellinga, T. (mentor), Verheij, H.J. (mentor), F.%22%29&pagesize-30">Molenaar, W.F. (mentor), Bloemendal, M. (mentor).

Subjects/Keywords: IJ; optimal traffic flow; SIVAK; recreational fleet

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hofland, F. P. J. (. (2016). Optimal traffic flow at the IJ, Amsterdam: Investigation of the influence of the Java bridge and the Stenen Hoofd bridge on the traffic flow at the IJ in 2025 from the perspective of the recreational fleet. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:65558b94-a2b9-4d8d-aabd-6194349d4902

Chicago Manual of Style (16^th Edition):

Hofland, F P J (author). “Optimal traffic flow at the IJ, Amsterdam: Investigation of the influence of the Java bridge and the Stenen Hoofd bridge on the traffic flow at the IJ in 2025 from the perspective of the recreational fleet.” 2016. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:65558b94-a2b9-4d8d-aabd-6194349d4902.

MLA Handbook (7^th Edition):

Hofland, F P J (author). “Optimal traffic flow at the IJ, Amsterdam: Investigation of the influence of the Java bridge and the Stenen Hoofd bridge on the traffic flow at the IJ in 2025 from the perspective of the recreational fleet.” 2016. Web. 08 Mar 2021.

Vancouver:

Hofland FPJ(. Optimal traffic flow at the IJ, Amsterdam: Investigation of the influence of the Java bridge and the Stenen Hoofd bridge on the traffic flow at the IJ in 2025 from the perspective of the recreational fleet. [Internet] [Masters thesis]. Delft University of Technology; 2016. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:65558b94-a2b9-4d8d-aabd-6194349d4902.

Council of Science Editors:

Hofland FPJ(. Optimal traffic flow at the IJ, Amsterdam: Investigation of the influence of the Java bridge and the Stenen Hoofd bridge on the traffic flow at the IJ in 2025 from the perspective of the recreational fleet. [Masters Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:65558b94-a2b9-4d8d-aabd-6194349d4902

Delft University of Technology

18. van Zaal, C.J. (author). Eco-friendly closure of tidal river systems: a case study on the Hollandsche IJssel.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:a5dd0cbd-990b-46c0-8356-2631cfba1852

► To protect the hinterland, flood defences are often located on the border between water and land. This same border however is also an attractive place… (more)

▼ To protect the hinterland, flood defences are often located on the border between water and land. This same border however is also an attractive place to live, which may hamper improvement of flood protections. Closing off a tidal (river) system, especially in case of little discharge, may in this case be a logical consideration. This would however result in the disappearance of tidal action, while ecological value in urban areas is already under pressure. Environmental organisations are representing the increasing voice and power of society and its cry for nature conservation. The Hollandsche IJssel is one of the side branches of the Dutch delta. It is a perfect case of the conflicting interests mentioned. The aim in this research was to design a hybrid barrier for this case that provides (1) the security of a close-off to the hinterland and (2) the openness of a surge barrier (tide and flow are possible) to nature and thus conserves this unique system. The core of this research is to come up with a preliminary design of a hybrid barrier that is appropriate from an ecological point of view. To do so, boundary conditions were distilled that ensure conservation of ecological value of the freshwater tidal river system. Focus was laid on the unique aspects of the ecosystem at hand. Ecological value is considered to be conserved if the hybrid barrier conserves the tidal range as much as possible (90 %) and if fish migration is still possible. The line of thought on how to take into account ecological value presented in this research could be used by others seeking to fully incorporate ecological value in their design. Several concepts and locations for the eco-friendly barrier are discussed. Furthermore, in order to increase the available intertidal area, a proposition is made to narrow the river. The proposed strategy consists of three aspects, namely (1) an eco-friendly barrier with pumping capacity, (2) river narrowing and (3) no dike reinforcements after implementation of the new barrier. Until the proposed strategy is implemented, dike reinforcements may still be necessary however. The proposed strategy was compared to the current or reference strategy. The reference strategy consists of three aspects, namely (1) improvement of the current barrier, (2) replacement of the barrier with a similar barrier in 2050, and (3) continuation of dike reinforcements. In both strategies the current barrier is replaced. It was found that for the proposed strategy, a single gate solution is not an option, hence multiple small gates are required. A single gate solution would lead to too high water levels in the Hollandsche IJssel. The final design consists of 31 square culverts with sides of 2.7 m. To maintain maximum tidal range pumps are required between 2105 and 2140 (depending on the severity of sea level rise). Therefore, a pump structure with 6 square inlets with sides of 3.7 m is included in the design. Approximately 90% of the original tidal amplitude is maintained and the available intertidal area almost triples.… Advisors/Committee Members: Jonkman, S.N. (mentor), van de Kerk, A.J. (mentor), F.%22%29&pagesize-30">Molenaar, W.F. (mentor), van Prooijen, B.C. (mentor), van Wesenbeek, B.K. (mentor).

Subjects/Keywords: Ecology; eco-friendly design; Storm Surge Barrier; Hollandsche IJssel

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

van Zaal, C. J. (. (2017). Eco-friendly closure of tidal river systems: a case study on the Hollandsche IJssel. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:a5dd0cbd-990b-46c0-8356-2631cfba1852

Chicago Manual of Style (16^th Edition):

van Zaal, C J (author). “Eco-friendly closure of tidal river systems: a case study on the Hollandsche IJssel.” 2017. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:a5dd0cbd-990b-46c0-8356-2631cfba1852.

MLA Handbook (7^th Edition):

van Zaal, C J (author). “Eco-friendly closure of tidal river systems: a case study on the Hollandsche IJssel.” 2017. Web. 08 Mar 2021.

Vancouver:

van Zaal CJ(. Eco-friendly closure of tidal river systems: a case study on the Hollandsche IJssel. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:a5dd0cbd-990b-46c0-8356-2631cfba1852.

Council of Science Editors:

van Zaal CJ(. Eco-friendly closure of tidal river systems: a case study on the Hollandsche IJssel. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:a5dd0cbd-990b-46c0-8356-2631cfba1852

Delft University of Technology

19. Dorrepaal, S.G. (author). Closure of the New Waterway: An adaptive and innovative design for a navigation lock in Rotterdam.

Degree: 2016, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:9ce6fa0f-9196-4ffe-ba26-afcfc1af9a72

► The Netherlands are protected against extreme high waters from the sea by an ingenious system of barriers. One of the most famous ones is the… (more)

▼ The Netherlands are protected against extreme high waters from the sea by an ingenious system of barriers. One of the most famous ones is the Maeslant barrier in the New Waterway near the port of Rotterdam. This barrier however, is subject to discussion, as it might not function as intended, because of the following reasons. It has a very low reliability regarding closing. Furthermore, because of the sea level rise, it is expected that the barrier should close much more frequently, causing more nuisance for navigation. Therefore a different solution is put forward by Spaargaren c.s. Namely to close off the New Waterway permanently by means of a barrier, consisting out of a pumping station, dewatering sluice and a lock complex. The latter one is further elaborated on by making a feasibility study for it. First of all, the best location is chosen for the barrier, which in this report is the location near Rozenburg, just east of the Maeslant barrier. Because of the high demands regarding both navigation and flood safety in combination with the uncertainty in these demands for the future, there is a need for a sophisticated design for the lock complex. This is done by first considering the boundary conditions for different (initial and adaptive) scenarios for both sets of requirements (navigation and flood safety). For navigation a larger vessel is taken into account in the adaptive boundary conditions. For flood safety, the adaptive boundary conditions results in a higher water level of about 1 meter to be retained, mostly due to a larger sea level rise. It turns out that the boundary conditions regarding navigation have a way larger impact in the design choices of the lock complex than the boundary conditions regarding flood safety. The above boundary conditions are used to create an overall solution for the barrier. 4 locks are needed (in case of an initial design): one large lock for large seagoing vessels, one mid-sized lock for smaller seagoing vessels and two for inland going vessels. When looking at the adaptive requirements, another mid-sized lock should be added. For the large lock, different principal solutions are developed that also take the adaptive boundary conditions into account. First of all, an adaptive design of a lock head is considered by making the head modular. This makes it possible to place a larger gate in the head later on. It turns out that this is probably not cost-efficient. The second proposed solution is to use a retaining wall in combination with a relieving floor for the chamber walls of the large lock for seagoing vessels. The relieving floor will decrease the horizontal soil loads on the soil retaining wall beneath it, which is structurally beneficial. This relieving floor will be combined with a longitudinal filling system. A longitudinal culvert over the length of the lock is placed on top of the relieving floor. Filling and emptying will be done using openings in the floor of the superstructure. The load on vessels during levelling of the lock are determined for this system, which… Advisors/Committee Members: Jonkman, S.N. (mentor), F.%22%29&pagesize-30">Molenaar, W.F. (mentor), Braam, C.R. (mentor), van Gelder, C.R.J. (mentor), van der Ven, P. (mentor).

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Dorrepaal, S. G. (. (2016). Closure of the New Waterway: An adaptive and innovative design for a navigation lock in Rotterdam. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:9ce6fa0f-9196-4ffe-ba26-afcfc1af9a72

Chicago Manual of Style (16^th Edition):

Dorrepaal, S G (author). “Closure of the New Waterway: An adaptive and innovative design for a navigation lock in Rotterdam.” 2016. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:9ce6fa0f-9196-4ffe-ba26-afcfc1af9a72.

MLA Handbook (7^th Edition):

Dorrepaal, S G (author). “Closure of the New Waterway: An adaptive and innovative design for a navigation lock in Rotterdam.” 2016. Web. 08 Mar 2021.

Vancouver:

Dorrepaal SG(. Closure of the New Waterway: An adaptive and innovative design for a navigation lock in Rotterdam. [Internet] [Masters thesis]. Delft University of Technology; 2016. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:9ce6fa0f-9196-4ffe-ba26-afcfc1af9a72.

Council of Science Editors:

Dorrepaal SG(. Closure of the New Waterway: An adaptive and innovative design for a navigation lock in Rotterdam. [Masters Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:9ce6fa0f-9196-4ffe-ba26-afcfc1af9a72

Delft University of Technology

20. Demmerer, D'tasha (author). Shear Capacity of Large Structural Elements: A case study of the shear behavior of the itaipu concrete lock walls.

Degree: 2020, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:3b2dd6bd-8e17-44a9-a433-4683a08aaf3d

► <p class="MsoNormal">The concept of shear loading and the shear resistance is well known for ‘regular’ sized beams, meaning beams that can be characterized as a… (more)

▼ <p class="MsoNormal">The concept of shear loading and the shear resistance is well known for ‘regular’ sized beams, meaning beams that can be characterized as a slender beam. However, once the beam increases in size such that it is characterized as a deep beam or even falls outside the range of the typical deep beam, less knowledge is available. A case study of the Itaipu lock walls is used to compare three different calculation methods for shear loading (sectional method, strut & tie method, and a linear and nonlinear finite element model) to each other. The calculation methods are applied to the large concrete lock walls in order to determine which of these methods can best be used for shear calculations on structural elements that fall out of the range of these so-called ‘regular’ sized beams. The effect of increasing thickness is studied and it can be concluded that the combination of a certain crack width and the aggregate interlock mechanism, and thus the grain size of the concrete mixture, play an important role in the shear capacity of beams. The existing norms and guidelines, such as the Eurocode and the American Concrete Institute codes, have been proven to be inadequate for shear calculations on structural elements that surpass the definition of a deep beam in size, such as the Itaipu lock walls. The sectional calculation, which is based on these norms and guidelines is however still used as a rough reference calculation in this research. The first calculation, which is the sectional calculation, resulted in two alternative designs next to the original lock wall design by Witteveen+Bos: total wall thickness original design: 33m, total wall thickness alternative design 1 (i): 17m and total wall thickness alternative design 2 (ii): 29m. The Strut & Tie calculation is then performed for the original Witteveen+Bos design, resulting in a reinforcement plan based on the normal forces in the ties. The third calculation type consisted of three linear models (of the original design and the two alternative designs) and one nonlinear model of the original Witteveen+Bos design. The stress trajectories of the linear models illustrated that the wall is predominantly stressed in compression, as a result of the large self-weight of the wall. Only the lower part of the wall and the lock floor connected to this wall are stressed in tension. The nonlinear model was therefore reinforced only in the lock floor and the lower part of the wall connected to the lock floor. Because the linear finite element approach does not include material behavior beyond the elastic stage, this approach is not sufficient and does not provide the necessary required insight for a shear resistance calculation. The nonlinear finite element model has proven to be the most accurate and adequate calculation method. The downside is that this method will take longer and requires more background information about the materials used, the connection between structural elements and the type of subsoil. The Strut & Tie approach, is a good first… Advisors/Committee Members: Jonkman, S.N. (mentor), F.%22%29&pagesize-30">Molenaar, W.F. (graduation committee), Hendriks, M.A.N. (graduation committee), de Waardt, H (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: Shear force; deep beam; DIANA FEA; strut and tie model

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Demmerer, D. (. (2020). Shear Capacity of Large Structural Elements: A case study of the shear behavior of the itaipu concrete lock walls. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:3b2dd6bd-8e17-44a9-a433-4683a08aaf3d

Chicago Manual of Style (16^th Edition):

Demmerer, D'tasha (author). “Shear Capacity of Large Structural Elements: A case study of the shear behavior of the itaipu concrete lock walls.” 2020. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:3b2dd6bd-8e17-44a9-a433-4683a08aaf3d.

MLA Handbook (7^th Edition):

Demmerer, D'tasha (author). “Shear Capacity of Large Structural Elements: A case study of the shear behavior of the itaipu concrete lock walls.” 2020. Web. 08 Mar 2021.

Vancouver:

Demmerer D(. Shear Capacity of Large Structural Elements: A case study of the shear behavior of the itaipu concrete lock walls. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:3b2dd6bd-8e17-44a9-a433-4683a08aaf3d.

Council of Science Editors:

Demmerer D(. Shear Capacity of Large Structural Elements: A case study of the shear behavior of the itaipu concrete lock walls. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:3b2dd6bd-8e17-44a9-a433-4683a08aaf3d

Delft University of Technology

21. Helsdingen, Martijn (author). Gate Driving Mechanisms and Dynamics.

Degree: 2020, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:6015a5b2-086f-4da6-9d77-383e6c17816c

►

Vertical sliding valves that are part of a filling and emptying system of a lock are often subjected to an underflow of water during emptying… (more)

▼

Vertical sliding valves that are part of a filling and emptying system of a lock are often subjected to an underflow of water during emptying and filling. The flow induces time varying forces on the structure which leads to dynamic behaviour of the valve. Whether the structure is in the range of resonance and what the amplitude of the vibrations will be depends on the mass, damping, stiffness and forcing quantities of the system. This thesis focussed on gaining insight in the behaviour of such a cylinder and its various components in terms of stiffness and damping of the total system including the vertical sliding valve. The research questions focussed on whether it is possible to influence the dynamic characteristics of a system (natural frequency and dynamic amplification) by adjusting the geometry of the hydraulic cylinder. Furthermore it is investigated which components are influencing the dynamic characteristics of the system and which damping and stiffness components are found to be subordinate to the dominant sources. Results were based on a Python script that included all relevant sources of damping and stiffness of a hydraulic cylinder, as well as the fluid structure interaction components such as added mass, damping and stiffness. The added damping components included the self-excitation suction damping. The sensitivity of different components to the natural frequency and dynamic amplification was explored. This was done for different cases, where in each case one variable varied while the others were kept constant. The results from the sensitivity analysis were used to find an optimal parameter that would lead to an optimal design in terms of natural frequency increase or decrease, reduction of the dynamic amplification and a minimal influence on the mass of the system. Besides these two studies, a third study was adopted to find the relative influence of different damping and stiffness components of the hydraulic cylinder for varying boundary conditions such as water level difference and gate opening. The study showed four components of a hydraulic cylinder that influenced the dynamic characteristics the most when varying their dimensions in a realistic range. These where the diameter of the hydraulic cylinder, the cylinder length, the thickness of the rod and the length of the tube that transport fluid into the cylinder. From these, the tube length and the cylinder diameters turned out to be the most effective design variables for tuning the stiffness, damping and correspondingly the natural frequency and the dynamic amplification of the system. Furthermore it was found that under all conditions (varying water level, gate opening height, pressure and stiffness), the stiffness was mostly determined by the axial stiffness of the rod and piston as well as the stiffness due to compaction of the cylinder fluid. For damping it was found that the cylinder only had limited influence and that most damping resulted from friction between the valve and the guiding rails.

Civil Engineering | Hydraulic Structures

Advisors/Committee Members: Hofland, B. (mentor), F.%22%29&pagesize-30">Molenaar, W.F. (graduation committee), Tieleman, O.C. (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: Fluid Structure Interaction; Underflow; Valves; Vibrations; Hydraulic cylinder

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Helsdingen, M. (. (2020). Gate Driving Mechanisms and Dynamics. (Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:6015a5b2-086f-4da6-9d77-383e6c17816c

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Helsdingen, Martijn (author). “Gate Driving Mechanisms and Dynamics.” 2020. Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:6015a5b2-086f-4da6-9d77-383e6c17816c.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Helsdingen, Martijn (author). “Gate Driving Mechanisms and Dynamics.” 2020. Web. 08 Mar 2021.

Vancouver:

Helsdingen M(. Gate Driving Mechanisms and Dynamics. [Internet] [Thesis]. Delft University of Technology; 2020. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:6015a5b2-086f-4da6-9d77-383e6c17816c.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Helsdingen M(. Gate Driving Mechanisms and Dynamics. [Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:6015a5b2-086f-4da6-9d77-383e6c17816c

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology

22. Stikvoort, Bram (author). Ship collision on inflatable weirs: Case study: weirs in the Meuse.

Degree: 2020, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:b397c746-e3c2-472d-b030-81f10ab774e8

►

In the Meuse seven weirs are located in the Dutch reaches, controlling the water level to enable inland navigation through the river. The weirs are… (more)

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In the Meuse seven weirs are located in the Dutch reaches, controlling the water level to enable inland navigation through the river. The weirs are being scheduled for replacement, where weir Grave is the first one in 2028. They are reaching their end-of-life time. One of the main issues that became of more importance in the recent years is ship collision. In the past 20 years two major ship collisions happened on two different existing weirs in the Meuse, one at Grave and one at Linne. The place of impact at the weirs was significantly damaged after those collisions. As a consequence, the water level dropped and inland navigation was not possible for one month. In this study an inflatable weir is proposed as replacement of the existing steel weirs in the Meuse. A conceptual inflatable weir design is made for location Grave, for replacement of the existing weir. The design is based on existing literature, such as the inflatable storm surge barrier Ramspol. The design for Grave is considered to be scalable to the overflow (Poirée) parts of the Meuse weirs. One of the aspects that has not yet been considered for those inflatable weirs is ship collision. The theory and formulas found for the existing collision analysis are not fully applicable to the inflatable weir, mainly due to large elastic deformation of the inflatable weir. In literature a standard expression has been found to quantify the ship force on the colliding structure. This expression forms the basis of the analytical model. The inflatable weir in the analytical model is schematized by a two-dimensional plate sheet. An effort was made to validate the strain found in the analytical model by a numerical model in Ansys. However numerical instabilities were found that lead in considerable modification of the desired model and so the results indicated no representative outcomes. To see what happens during the ship collision a physical scale model was made, with scale 1:25 for accurate representation of the physical phenomena. Sixteen experiments were done with four different draughts and four different velocities of the ship. For the experiment with the scaled maximum draught (0.14m) and velocity (1.1m/s). The full video experiments are uploaded to the 4TU-datacentrum (https://data.4tu.nl/portal). The two aspects uplift of the ship and gliding over the weir observed in the experiments are not yet included in the analytical model, therefore the analytical model is extended. The extended analytical model showed a 25% deviation with the uplift of the ship and a 15% deviation with the displacement of the weir from the experiments. With the extended model it was calculated that the limit strain is not exceeded and that the strain is maximum 5% on top of the static strain of 1.9%. Concluding, the first steps have been taken into research of ship collision on inflatable weirs. Further investigation on the ship with V-bow, the propeller of the ship and a more extensive numerical model is recommended for ship collision on inflatable weirs.

Civil Engineering…

Advisors/Committee Members: Jonkman, S.N. (graduation committee), F.%22%29&pagesize-30">Molenaar, W.F. (graduation committee), Hoogenboom, P.C.J. (graduation committee), Reedijk, J.S. (mentor), Delft University of Technology (degree granting institution).

Subjects/Keywords: Ship collision; inflatable structure; inflatable weir; inflatable dam; Meuse

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APA (6^th Edition):

Stikvoort, B. (. (2020). Ship collision on inflatable weirs: Case study: weirs in the Meuse. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:b397c746-e3c2-472d-b030-81f10ab774e8

Chicago Manual of Style (16^th Edition):

Stikvoort, Bram (author). “Ship collision on inflatable weirs: Case study: weirs in the Meuse.” 2020. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:b397c746-e3c2-472d-b030-81f10ab774e8.

MLA Handbook (7^th Edition):

Stikvoort, Bram (author). “Ship collision on inflatable weirs: Case study: weirs in the Meuse.” 2020. Web. 08 Mar 2021.

Vancouver:

Stikvoort B(. Ship collision on inflatable weirs: Case study: weirs in the Meuse. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:b397c746-e3c2-472d-b030-81f10ab774e8.

Council of Science Editors:

Stikvoort B(. Ship collision on inflatable weirs: Case study: weirs in the Meuse. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:b397c746-e3c2-472d-b030-81f10ab774e8

Delft University of Technology

23. Qin, Jiantuan (author). The tunnel design connecting A15 and A12 crossing the Pannerdens canal.

Degree: 2020, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:fc21dd44-7514-4df2-82a2-e3cb2470877e

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This master thesis aims to do a detailed conceptual design of a tunnel to connect the road A15 and A12, which will cross the Pannerdens… (more)

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APA (6^th Edition):

Qin, J. (. (2020). The tunnel design connecting A15 and A12 crossing the Pannerdens canal. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:fc21dd44-7514-4df2-82a2-e3cb2470877e

Chicago Manual of Style (16^th Edition):

Qin, Jiantuan (author). “The tunnel design connecting A15 and A12 crossing the Pannerdens canal.” 2020. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:fc21dd44-7514-4df2-82a2-e3cb2470877e.

MLA Handbook (7^th Edition):

Qin, Jiantuan (author). “The tunnel design connecting A15 and A12 crossing the Pannerdens canal.” 2020. Web. 08 Mar 2021.

Vancouver:

Qin J(. The tunnel design connecting A15 and A12 crossing the Pannerdens canal. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:fc21dd44-7514-4df2-82a2-e3cb2470877e.

Council of Science Editors:

Qin J(. The tunnel design connecting A15 and A12 crossing the Pannerdens canal. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:fc21dd44-7514-4df2-82a2-e3cb2470877e

Delft University of Technology

24. Been, S.K. (author). Smoothed Particle Hydrodynamic Modelling of Wave Impact: A numerical and theoretical analysis of non-breaking wave loads on structures with overhang.

Degree: 2020, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:da456924-c5e4-4e93-8780-cc0853850ddc

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Hydraulic structures can be prone to impulsive wave impact, which is a highly stochastic and uncertain process. This type of impact, defined by extreme pressure… (more)

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Hydraulic structures can be prone to impulsive wave impact, which is a highly stochastic and uncertain process. This type of impact, defined by extreme pressure peaks and a very short duration, is not only caused by breaking waves, but also by non-breaking standing waves on structures with an overhang, such as culverts and steel gates. In this study, the capabilities of the Lagrangian numerical tool Smoothed Particle Hydrodynamics (SPH) are validated by means of experimental research conducted at the Hydraulics lab of the Delft university of Technology, in which two short overhang configurations were subjected to multiple non-breaking wave conditions. SPH distinguishes itself by discretizing the numerical domain in particles instead of a grid, unlike traditional computational fluid dynamics (CFD). In doing so, it excels in free surface modelling and complex wave-structure interaction. In this thesis, the theory of pressure-impulse is applied, which is defined as the integral of the pressure over the impact duration. This method is more stable than using pressure peaks and can be used to obtain the reaction forces on hydraulic structures. However, the theory is in development and subject of recent literature. This research includes the theoretical pressure-impulse model, which is based on the Laplace equation and solely includes the vertical impact by assuming a circular profile under the overhang with a constant impact velocity. Furthermore, a new conceptual model is introduced, which is based on integration by the particle velocities in both horizontal and vertical direction as described by Linear Wave Theory. The assumptions of the velocity fields of both models are assessed by the SPH method. As a result, modifications are proposed to the conceptual model and validated with the experiment. SPH shows good agreement with the experiment in terms of wave generation, pressure distribution and pressure-impulse profile. However, the lack of air in the numerical model result in overestimations of the pressure peaks. The more air is entrapped in the experimental wave impact, the higher the deviation. That said, the impact duration also becomes longer the more air is entrapped while the SPH model shows a somewhat constant and shorter duration. As a result, the pressure-impulse profiles shows corrective behavior over the vertical, mitigates the absence of air and thus greatly increases the accuracy and stability of the results. Finally, an analytical validation is performed in which the theoretical models for overhang configurations and design formulae for vertical walls are compared to SPH and the experiment.

Hydraulic Engineering | Hydraulic Structures and Flood Risk

Advisors/Committee Members: Antonini, A. (mentor), F.%22%29&pagesize-30">Molenaar, W.F. (graduation committee), de Almeida Sousa, E. (graduation committee), Bricker, J.D. (graduation committee), W.%22%29&pagesize-30">Kostense, N.W. (graduation committee), Tuin, H.G. (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: Smooth particle hydrodynamics; Wave impacts; Pressure impulse; Numerical modelling; Hydraulic structures

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Been, S. K. (. (2020). Smoothed Particle Hydrodynamic Modelling of Wave Impact: A numerical and theoretical analysis of non-breaking wave loads on structures with overhang. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:da456924-c5e4-4e93-8780-cc0853850ddc

Chicago Manual of Style (16^th Edition):

Been, S K (author). “Smoothed Particle Hydrodynamic Modelling of Wave Impact: A numerical and theoretical analysis of non-breaking wave loads on structures with overhang.” 2020. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:da456924-c5e4-4e93-8780-cc0853850ddc.

MLA Handbook (7^th Edition):

Been, S K (author). “Smoothed Particle Hydrodynamic Modelling of Wave Impact: A numerical and theoretical analysis of non-breaking wave loads on structures with overhang.” 2020. Web. 08 Mar 2021.

Vancouver:

Been SK(. Smoothed Particle Hydrodynamic Modelling of Wave Impact: A numerical and theoretical analysis of non-breaking wave loads on structures with overhang. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:da456924-c5e4-4e93-8780-cc0853850ddc.

Council of Science Editors:

Been SK(. Smoothed Particle Hydrodynamic Modelling of Wave Impact: A numerical and theoretical analysis of non-breaking wave loads on structures with overhang. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:da456924-c5e4-4e93-8780-cc0853850ddc

25. Kleiterp, R. (author). The feasibility of a commercial osmotic power plant.

Degree: 2012, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:fbaa8d2f-3c01-45e3-8473-9a2ccd2b9a67

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Osmotic power is a form of renewable energy which is currently not used at a commercial scale, but it might have the potential to be… (more)

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Osmotic power is a form of renewable energy which is currently not used at a commercial scale, but it might have the potential to be exploited in a sustainable manner in the near future. It uses the principle of osmosis, which is known for over a century and is used since recent years for several membrane applications. The salinity gradient between fresh river water and salt sea water, separated by a membrane, causes an osmotic flow which can be converted into electricity by using one of the two types of osmotic power generation, PRO or RED. Interested parties have already concluded, by conducting laboratory studies and operating pilot plants, that osmotic power is a promising source of renewable energy in the future. An energy unit rate of 8 cents/kWh should be possible for a commercial-scaled power plant. However, what is lacking in these studies is the actual design of the osmotic power plant. Scaling up of an osmotic power plant to a commercial scale will have a major impact on the design of the main infrastructure. The question is whether a commercial osmotic power plant is feasible if the capital costs of the main infrastructure are included. Answering this question is the objective of this thesis. The research question is answered by conducting multiple case studies with a varying capacity. By considering the revenues and investments over the lifespan of the power plant, the energy unit rate of each power plant is obtained. The general conclusion is that, with the present technology and knowledge, the energy unit rate deviates too much from a marketable energy unit rate. The high capital costs of the intake and outfall system and pre-treatment facility, and the low power plant efficiency ensure that a commercial osmotic power plant is not economically justified. The commercial exploitation of an osmotic power plant is therefore far from being feasible. However, when a number of expected and recommended developments are considered, the energy unit rate will approach a marketable value. The commercial exploitation of an osmotic power plant could therefore be feasible in the near future. Though, the occurrence of these recommended developments seems to be an utopia. The answer to the research question is therefore that the future commercial exploitation of osmotic power is not feasible.

Hydraulic Engineering

Civil Engineering and Geosciences

Advisors/Committee Members: Vrijling, J.K. (mentor), F.%22%29&pagesize-30">Molenaar, W.F. (mentor), Vreeburg, J.H.G. (mentor).

Subjects/Keywords: osmosis; osmotic; blue energy; PRO; RED

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APA (6^th Edition):

Kleiterp, R. (. (2012). The feasibility of a commercial osmotic power plant. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:fbaa8d2f-3c01-45e3-8473-9a2ccd2b9a67

Chicago Manual of Style (16^th Edition):

Kleiterp, R (author). “The feasibility of a commercial osmotic power plant.” 2012. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:fbaa8d2f-3c01-45e3-8473-9a2ccd2b9a67.

MLA Handbook (7^th Edition):

Kleiterp, R (author). “The feasibility of a commercial osmotic power plant.” 2012. Web. 08 Mar 2021.

Vancouver:

Kleiterp R(. The feasibility of a commercial osmotic power plant. [Internet] [Masters thesis]. Delft University of Technology; 2012. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:fbaa8d2f-3c01-45e3-8473-9a2ccd2b9a67.

Council of Science Editors:

Kleiterp R(. The feasibility of a commercial osmotic power plant. [Masters Thesis]. Delft University of Technology; 2012. Available from: http://resolver.tudelft.nl/uuid:fbaa8d2f-3c01-45e3-8473-9a2ccd2b9a67

26. Ko, K.K.M. (author). Realising a floating city.

Degree: 2015, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:cb4bddef-1eb8-49ec-9ff9-670a30dd4b72

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People are already living on water for centuries in some places around the world. However, the concept of building on water has been reintroduced with… (more)

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People are already living on water for centuries in some places around the world. However, the concept of building on water has been reintroduced with a new idea in the last two decades. The new idea is to realise a very large floating structure which is as big as a city. Instead of multiple independent floating houses forming a floating community or residential district, this new idea is to realise a complete city state which floats on the water, a so-called ‘floating city’. The main objective of this report is to give a general design of a floating city to determine the structural feasibility of such a concept. The challenge in this concept lies in the environment the floating community is in. The environment of the floating community determines which and what kind of forces are acting on the platforms. Strength and stability are heavily dependent on which forces are working on the platforms and the magnitude of these forces is also of great importance. It is common sense that such a floating city would survive better in a calm bay then in the open sea with huge waves and frequent storms. That is why this thesis will focus on the latter situation: a floating city in the open sea with a rough environment. The main question in this thesis to be answered is defined as ‘Is it possible and realistic to create floating cities from a structural perspective’. To come to an answer for the main research question, several sub questions can be formulated: - What kind of floating platforms are needed? - How can platforms be connected to each other to form a floating city? - How is the floating city to be moored to stay at one location? - What is the behaviour of the platforms, connections and moorings when the floating community is loaded by (large) waves? The answer is that it is theoretically possible to realise floating cities with modular floating platforms rigidly connected to each other. The platforms are inhabitable under severe wave circumstances and they experience very small displacements as long as the connections between the platforms are very rigid constructed. However, to make sure rigid connections in a multiple mass-spring system are indeed experiencing lower connection forces due to smaller displacements, it is best to find this out with a small scale experiment/modelling program. From the results and calculations in this thesis, it is reliable to connect up to 4 platforms in a linear formation for the chosen design of the hexagonal platform with sides of 60 m and a construction height of 14 m. This means that a floating community of 16 platforms (in a configuration of 4 by 4 platforms) can be realised and house approximately 4000 inhabitants.

Hydraulic Engineering

Civil Engineering and Geosciences

Advisors/Committee Members: Jonkman, S.N. (mentor), F.%22%29&pagesize-30">Molenaar, W.F. (mentor), Hoogenboom, P.C.J. (mentor).

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ko, K. K. M. (. (2015). Realising a floating city. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:cb4bddef-1eb8-49ec-9ff9-670a30dd4b72

Chicago Manual of Style (16^th Edition):

Ko, K K M (author). “Realising a floating city.” 2015. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:cb4bddef-1eb8-49ec-9ff9-670a30dd4b72.

MLA Handbook (7^th Edition):

Ko, K K M (author). “Realising a floating city.” 2015. Web. 08 Mar 2021.

Vancouver:

Ko KKM(. Realising a floating city. [Internet] [Masters thesis]. Delft University of Technology; 2015. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:cb4bddef-1eb8-49ec-9ff9-670a30dd4b72.

Council of Science Editors:

Ko KKM(. Realising a floating city. [Masters Thesis]. Delft University of Technology; 2015. Available from: http://resolver.tudelft.nl/uuid:cb4bddef-1eb8-49ec-9ff9-670a30dd4b72

27. Hofschreuder, B. (author). Flood protection and marine power in the Wash estuary, United Kingdom: Technical and economical feasibility study.

Degree: 2012, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:2124eacb-36d6-4dea-a696-771d07ec07ec

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The Wash estuary is situated at the English east coast. Covering an area of approximately 615 km2, the estuary is among the largest estuaries in… (more)

Subjects/Keywords: tidal power plant; marine energy; storm surge barrier; storage basin approach; wash estuary; feasibility

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hofschreuder, B. (. (2012). Flood protection and marine power in the Wash estuary, United Kingdom: Technical and economical feasibility study. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:2124eacb-36d6-4dea-a696-771d07ec07ec

Chicago Manual of Style (16^th Edition):

Hofschreuder, B (author). “Flood protection and marine power in the Wash estuary, United Kingdom: Technical and economical feasibility study.” 2012. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:2124eacb-36d6-4dea-a696-771d07ec07ec.

MLA Handbook (7^th Edition):

Hofschreuder, B (author). “Flood protection and marine power in the Wash estuary, United Kingdom: Technical and economical feasibility study.” 2012. Web. 08 Mar 2021.

Vancouver:

Hofschreuder B(. Flood protection and marine power in the Wash estuary, United Kingdom: Technical and economical feasibility study. [Internet] [Masters thesis]. Delft University of Technology; 2012. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:2124eacb-36d6-4dea-a696-771d07ec07ec.

Council of Science Editors:

Hofschreuder B(. Flood protection and marine power in the Wash estuary, United Kingdom: Technical and economical feasibility study. [Masters Thesis]. Delft University of Technology; 2012. Available from: http://resolver.tudelft.nl/uuid:2124eacb-36d6-4dea-a696-771d07ec07ec

28. Van Tongeren, B. (author). Salt Intrusion Prevention in Locks: Designing a Movable Sill in the Existing Krammer Commercial Navigation Lock.

Degree: 2013, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:62fc4574-9025-4641-9c97-a31101c29de5

► Salt intrusion is undesired because it has negative effects for drinking water and agricultural water intakes. At the Krammer locks (Zeeland, the Netherlands) a complex… (more)

▼ Salt intrusion is undesired because it has negative effects for drinking water and agricultural water intakes. At the Krammer locks (Zeeland, the Netherlands) a complex system is integrated in the design of the lock which prevents salt intrusion very accurate. This effective reduction of salt intrusion is regrettably accompanied with high energy consumption, high operational costs and high maintenance costs. On top of that, the entire system needs big maintenance in 2 years (20 M euro) and an extensive expansion in 10 years (300 M euro). Since retaining the current system is very expensive, other options have been elaborated. A pilot project is carried out in the smallest lock of the complex. The pilot has as main objective to get insight in possibilities for a design in the much larger commercial locks. The objective of this study is to present a feasible design for a salt intrusion prevention system in the commercial locks. It should be comparably effective as the current system, while having lower energy consumption, lower construction costs, lower maintenance costs, lower operational costs and a higher lock capacity. After an analysis it became clear that this is possible by including a movable sill in the structure. A comparison with the design of the pilot and the current system must prove the abilities of the new design. The presence of a movable sill results in a height reduction of the air bubble- and water screens in the new design. The screens are both integrated in the movable sill. In operation, the sill moves vertically up and down once every tidal cycle of 12 hours. It allows ships to sail over it, while being positioned as high as possible. Above the top level of the sill, the integrated screens reduce the negative effects. In this way, the optimum reduction of water exchange is obtained. The design of the screens is partly based on the design of the pilot. It’s optimised by using other dimensions and reducing the required air pressure for the air bubble screens. After determining the governing loads on the structure, a dimensioning has led to the final design. The driving mechanism is located above water and controls the height of the sill via vertical steel tubes. The structure is integrated in the existing lock chamber, in which a guiding rail distributes the forces of the sill to the lock chamber. The design is first compared to the current situation. In this comparison it becomes clear that salt intrusion prevention of the current system can be matched closely. The reduction of fresh water loss by the system improves considerably and the capacity of the lock increases by a third. A comparison of the design with the design of the pilot is quantified as being approximately 20% more effective, consuming 50% less energy and being 30% cheaper than a configuration with air bubble- and water screens only. The expected improvements of the design in this study show that it is an interesting design. The quantifications are obtained by calculations based on various assumptions. Before the design can be… Advisors/Committee Members: Jonkman, S.N. (mentor), Van de Kerk, A.J. (mentor), F.%22%29&pagesize-30">Molenaar, W.F. (mentor), Uijttewaal, W.S.J. (mentor).

Subjects/Keywords: salt; lock; intrusion; salt intrusion prevention; movable sill

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APA (6^th Edition):

Van Tongeren, B. (. (2013). Salt Intrusion Prevention in Locks: Designing a Movable Sill in the Existing Krammer Commercial Navigation Lock. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:62fc4574-9025-4641-9c97-a31101c29de5

Chicago Manual of Style (16^th Edition):

Van Tongeren, B (author). “Salt Intrusion Prevention in Locks: Designing a Movable Sill in the Existing Krammer Commercial Navigation Lock.” 2013. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:62fc4574-9025-4641-9c97-a31101c29de5.

MLA Handbook (7^th Edition):

Van Tongeren, B (author). “Salt Intrusion Prevention in Locks: Designing a Movable Sill in the Existing Krammer Commercial Navigation Lock.” 2013. Web. 08 Mar 2021.

Vancouver:

Van Tongeren B(. Salt Intrusion Prevention in Locks: Designing a Movable Sill in the Existing Krammer Commercial Navigation Lock. [Internet] [Masters thesis]. Delft University of Technology; 2013. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:62fc4574-9025-4641-9c97-a31101c29de5.

Council of Science Editors:

Van Tongeren B(. Salt Intrusion Prevention in Locks: Designing a Movable Sill in the Existing Krammer Commercial Navigation Lock. [Masters Thesis]. Delft University of Technology; 2013. Available from: http://resolver.tudelft.nl/uuid:62fc4574-9025-4641-9c97-a31101c29de5

29. Li, Y. (author). Protection of Shanghai from Flooding: 'Open or closable navigational section?’.

Degree: 2015, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:7680dc17-f8a5-44b7-9997-03c381570500

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Due to Shanghai’s unique location, it is sensitive to sea level rise and land subsidence, which are directly related to urban flood protection. Flooding of… (more)

Subjects/Keywords: Shanghai; flood protection system; storm surge barrier; open option; navigational section; Yangtze Estuary

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Li, Y. (. (2015). Protection of Shanghai from Flooding: 'Open or closable navigational section?’. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:7680dc17-f8a5-44b7-9997-03c381570500

Chicago Manual of Style (16^th Edition):

Li, Y (author). “Protection of Shanghai from Flooding: 'Open or closable navigational section?’.” 2015. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:7680dc17-f8a5-44b7-9997-03c381570500.

MLA Handbook (7^th Edition):

Li, Y (author). “Protection of Shanghai from Flooding: 'Open or closable navigational section?’.” 2015. Web. 08 Mar 2021.

Vancouver:

Li Y(. Protection of Shanghai from Flooding: 'Open or closable navigational section?’. [Internet] [Masters thesis]. Delft University of Technology; 2015. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:7680dc17-f8a5-44b7-9997-03c381570500.

Council of Science Editors:

Li Y(. Protection of Shanghai from Flooding: 'Open or closable navigational section?’. [Masters Thesis]. Delft University of Technology; 2015. Available from: http://resolver.tudelft.nl/uuid:7680dc17-f8a5-44b7-9997-03c381570500

30. Zorgdrager, A. (author). Feasibility study on the application of fiber-reinforced polymers in large lock gates.

Degree: 2014, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:a9cac1c3-8915-46a6-8080-ceee5c2d2482

Hydraulic Structures

Hydraulic Engineering

Civil Engineering and Geosciences

Advisors/Committee Members: Jonkman, S.N. (mentor), Kolstein, M.H. (mentor), Molenaar, W.F. (mentor), Van Lierop, P.J.C. (mentor).

Subjects/Keywords: FRP; fiber-reinforced polymers; lock gate; feasibility

…these actual constructed gates, several studies are performed at the Delft University of… …Technology on the feasibility of FRP in water retaining gates by Kok [14], Tuin [15…

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APA (6^th Edition):

Zorgdrager, A. (. (2014). Feasibility study on the application of fiber-reinforced polymers in large lock gates. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:a9cac1c3-8915-46a6-8080-ceee5c2d2482

Chicago Manual of Style (16^th Edition):

Zorgdrager, A (author). “Feasibility study on the application of fiber-reinforced polymers in large lock gates.” 2014. Masters Thesis, Delft University of Technology. Accessed March 08, 2021. http://resolver.tudelft.nl/uuid:a9cac1c3-8915-46a6-8080-ceee5c2d2482.

MLA Handbook (7^th Edition):

Zorgdrager, A (author). “Feasibility study on the application of fiber-reinforced polymers in large lock gates.” 2014. Web. 08 Mar 2021.

Vancouver:

Zorgdrager A(. Feasibility study on the application of fiber-reinforced polymers in large lock gates. [Internet] [Masters thesis]. Delft University of Technology; 2014. [cited 2021 Mar 08]. Available from: http://resolver.tudelft.nl/uuid:a9cac1c3-8915-46a6-8080-ceee5c2d2482.

Council of Science Editors:

Zorgdrager A(. Feasibility study on the application of fiber-reinforced polymers in large lock gates. [Masters Thesis]. Delft University of Technology; 2014. Available from: http://resolver.tudelft.nl/uuid:a9cac1c3-8915-46a6-8080-ceee5c2d2482

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