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210 total matches.
◁ [1] [2] [3] [4] [5] [6] [7] ▶
NSYSU
1.
Liang, Jheng-Ying.
Application and Analysis on Building Energy Efficiency Upgrade Strategies.
Degree: Master, Mechanical and Electro-Mechanical Engineering, 2008, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0724108-142441 
► Due to lacking of natural resources, the major energy utilized in Taiwan are mostly imported, including oil (50.9%), Coal (32.3%), and natural gas (8.1%), nuclear…
(more)
▼ Due to lacking of natural resources, the major energy utilized in Taiwan are mostly imported, including oil (50.9%), Coal (32.3%), and natural gas (8.1%), nuclear (7.3%) and hydraulic power (1.4%). Therefore, energy saving strategies have become a global trend and needs immediate action so that CO2 emission can be reduced.
To coup with the Kyoto protocol, building energy conservation has been deemed as a policy of no regret and aiming at 20% savings in the whole nation.
In this research, building energy conservation strategies, especially on HVAC systems which have been widely adapted in Taiwan will be analyzed and validated with
full-
scale experimental results. Efforts will be especially focused on commercial and residential buildings, so that their energy savings effect can be analyzed quantitatively.
Advisors/Committee Members: (chair), (committee member), (chair).
Subjects/Keywords: Full-scale experimental; Green HVAC; Green Building; Energy conservation strategies
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APA (6th Edition):
Liang, J. (2008). Application and Analysis on Building Energy Efficiency Upgrade Strategies. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0724108-142441
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Liang, Jheng-Ying. “Application and Analysis on Building Energy Efficiency Upgrade Strategies.” 2008. Thesis, NSYSU. Accessed March 06, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0724108-142441.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Liang, Jheng-Ying. “Application and Analysis on Building Energy Efficiency Upgrade Strategies.” 2008. Web. 06 Mar 2021.
Vancouver:
Liang J. Application and Analysis on Building Energy Efficiency Upgrade Strategies. [Internet] [Thesis]. NSYSU; 2008. [cited 2021 Mar 06].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0724108-142441.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Liang J. Application and Analysis on Building Energy Efficiency Upgrade Strategies. [Thesis]. NSYSU; 2008. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0724108-142441
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Oregon State University
2.
Kawamata, Yohsuke.
Seismic performance of a pile-supported container wharf structures in rockfill.
Degree: PhD, Civil Engineering, 2009, Oregon State University
URL: http://hdl.handle.net/1957/11835
► Recently, the concept of performance based design has become popular for many types of structures, including port facilities under seismic loading. For the case of…
(more)
▼ Recently, the concept of performance based design has become popular for many types of structures, including port facilities under seismic loading. For the case of pile-supported wharves, the level of performance is generally estimated using the displacement capacity of the structure. Therefore, understanding soil-pile interaction is one of the most critical factors for estimating performance. One of the biggest challenges on the displacement estimation is defining the soil parameters. However, only limited information is available in the literature on the behavior of laterally loaded piles in the large-diameter rockfill typically used in port dike construction, where the particle size
approaches the pile diameter.
In light of this, a series of
full-
scale lateral load tests on piles in the rockfill were conducted in order to obtain a better understanding of the performance of the wharf deck pile-soil system against lateral loading, and reaction mechanism in rockfill. All the tests were conducted successfully, and large amount of useful data and some important observations were obtained during and after the tests.
Following the experiments, numerical analyses were conducted with a set of soil dependant stiffness curves (i.e. p-y curves) currently used for design practice. These results were compared with the test results in order to assess the validity of the current design approach. It was concluded that those p-y curves could provide reasonable rotation and deflection profiles along the test piles, but gave considerably underestimated ultimate
lateral resistance of the pile-soil system. In order to find possible reasons for this, the observations during and after the tests were carefully reviewed. Based on the review, it was found that the lateral reaction from the rockfill under low confinement plays a very important role. Considering particulate mechanism in the rockfill, a reasonable hypothesis was developed; i.e. the lateral reaction from the rockfill is a combination of reactions due to both friction and interlocking between large rock particles. Based on this hypothesis, backcalculation of the p-y curves was carried out comparing the experimental and numerical results, and it was concluded that addition of the interlocking concept to the p-y curves used in the current design methodology significantly improved performance.
Advisors/Committee Members: Ashford, Scott (advisor), Higgins, Christopher (committee member).
Subjects/Keywords: full-scale test; Piling (Civil engineering) – Earthquake effects – Testing
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APA (6th Edition):
Kawamata, Y. (2009). Seismic performance of a pile-supported container wharf structures in rockfill. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/11835
Chicago Manual of Style (16th Edition):
Kawamata, Yohsuke. “Seismic performance of a pile-supported container wharf structures in rockfill.” 2009. Doctoral Dissertation, Oregon State University. Accessed March 06, 2021.
http://hdl.handle.net/1957/11835.
MLA Handbook (7th Edition):
Kawamata, Yohsuke. “Seismic performance of a pile-supported container wharf structures in rockfill.” 2009. Web. 06 Mar 2021.
Vancouver:
Kawamata Y. Seismic performance of a pile-supported container wharf structures in rockfill. [Internet] [Doctoral dissertation]. Oregon State University; 2009. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/1957/11835.
Council of Science Editors:
Kawamata Y. Seismic performance of a pile-supported container wharf structures in rockfill. [Doctoral Dissertation]. Oregon State University; 2009. Available from: http://hdl.handle.net/1957/11835
3.
施, 鐘淇.
Study on Seismic Behavior and Failure Mechanisms of Full Scale RC Bridges : 実大PC橋梁の耐震性能と損傷メカニズムに関する研究.
Degree: 博士（工学）, 2017, Kyushu Institute of Technology / 九州工業大学
URL: http://hdl.handle.net/10228/5436
► 九州工業大学博士学位論文 学位記番号:工博甲第387号 学位授与年月日:平成27年3月25日
Chapter 1 Introduction|Chapter 2 Literature Review|Chapter 3 Failure Mechanisms of Xiaoyudong Bridge|Chapter 4 Evaluation on Influence of M-N Interaction on Seismic Behavior…
(more)
▼ 九州工業大学博士学位論文 学位記番号:工博甲第387号 学位授与年月日:平成27年3月25日
Chapter 1 Introduction|Chapter 2 Literature Review|Chapter 3 Failure Mechanisms of Xiaoyudong Bridge|Chapter 4 Evaluation on Influence of M-N Interaction on Seismic Behavior of RC Arch Bridge|Chapter 5 Evaluation on Seismic Behavior of RC Columns based on E-Defense Excitation Tests|Chapter 6 Conclusions
平成26年度
Advisors/Committee Members: 幸左, 賢二.
Subjects/Keywords: RC Bridges; Full Scale; Seismic Behavior; Failure; Mechanisms
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APA (6th Edition):
施, . (2017). Study on Seismic Behavior and Failure Mechanisms of Full Scale RC Bridges : 実大PC橋梁の耐震性能と損傷メカニズムに関する研究. (Thesis). Kyushu Institute of Technology / 九州工業大学. Retrieved from http://hdl.handle.net/10228/5436
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
施, 鐘淇. “Study on Seismic Behavior and Failure Mechanisms of Full Scale RC Bridges : 実大PC橋梁の耐震性能と損傷メカニズムに関する研究.” 2017. Thesis, Kyushu Institute of Technology / 九州工業大学. Accessed March 06, 2021.
http://hdl.handle.net/10228/5436.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
施, 鐘淇. “Study on Seismic Behavior and Failure Mechanisms of Full Scale RC Bridges : 実大PC橋梁の耐震性能と損傷メカニズムに関する研究.” 2017. Web. 06 Mar 2021.
Vancouver:
施 . Study on Seismic Behavior and Failure Mechanisms of Full Scale RC Bridges : 実大PC橋梁の耐震性能と損傷メカニズムに関する研究. [Internet] [Thesis]. Kyushu Institute of Technology / 九州工業大学; 2017. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/10228/5436.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
施 . Study on Seismic Behavior and Failure Mechanisms of Full Scale RC Bridges : 実大PC橋梁の耐震性能と損傷メカニズムに関する研究. [Thesis]. Kyushu Institute of Technology / 九州工業大学; 2017. Available from: http://hdl.handle.net/10228/5436
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Mississippi State University
4.
Garcia Beltran, Lyan Ivonne.
Full-scale instrumented evaluations of multiple airfield matting systems on soft soil to characterize permanent deformation.
Degree: MS, Civil and Environmental Engineering, 2015, Mississippi State University
URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-06292015-184339/
;
► Airfield matting systems are used for the expedient construction of temporary airfields and rapid expansion of existing airfields to provide maneuvering support for military…
(more)
▼ Airfield matting systems are used for the expedient construction of temporary airfields and rapid expansion of existing airfields to provide maneuvering support for military aircraft. They protect the subgrade by distributing the load exerted by aircraft over a larger area. Six airfield matting systems of varying materials and designs were evaluated through the construction of
full-
scale test sections to determine their effectiveness at reducing the accumulation of subgrade deformation and decreasing the pressure experienced by the subgrade. The matting systems were tested on a California Bearing Ratio (CBR) of 6 and subjected to simulated F-15E aircraft traffic while monitoring mat breakage, deformation, and subgrade earth pressure. The systems were compared in terms of the rate of subgrade permanent deformation. Based on test results, a simplified expression was developed to predict subgrade deformation on a CBR of 6 as a function of F 15E aircraft passes and airfield mat properties.
Advisors/Committee Members: Ernest S. Berney IV (committee member), Seamus F. Freyne (committee member), Isaac L. Howard (committee member).
Subjects/Keywords: temporary airfield surfacing; landing mat; full-scale evaluation; Airfield mat
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APA (6th Edition):
Garcia Beltran, L. I. (2015). Full-scale instrumented evaluations of multiple airfield matting systems on soft soil to characterize permanent deformation. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-06292015-184339/ ;
Chicago Manual of Style (16th Edition):
Garcia Beltran, Lyan Ivonne. “Full-scale instrumented evaluations of multiple airfield matting systems on soft soil to characterize permanent deformation.” 2015. Masters Thesis, Mississippi State University. Accessed March 06, 2021.
http://sun.library.msstate.edu/ETD-db/theses/available/etd-06292015-184339/ ;.
MLA Handbook (7th Edition):
Garcia Beltran, Lyan Ivonne. “Full-scale instrumented evaluations of multiple airfield matting systems on soft soil to characterize permanent deformation.” 2015. Web. 06 Mar 2021.
Vancouver:
Garcia Beltran LI. Full-scale instrumented evaluations of multiple airfield matting systems on soft soil to characterize permanent deformation. [Internet] [Masters thesis]. Mississippi State University; 2015. [cited 2021 Mar 06].
Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-06292015-184339/ ;.
Council of Science Editors:
Garcia Beltran LI. Full-scale instrumented evaluations of multiple airfield matting systems on soft soil to characterize permanent deformation. [Masters Thesis]. Mississippi State University; 2015. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-06292015-184339/ ;
Texas A&M University
5.
Marchetti, Joseph Michael.
Design, Construction, and Visualization of Transparent Full Scale High Pressure Test Facility for Electronic Submersible Pumps.
Degree: MS, Mechanical Engineering, 2013, Texas A&M University
URL: http://hdl.handle.net/1969.1/151714
► With the advent of aging oilfields and extraction in extreme conditions, artificial lift has become a necessity to make certain fields technically and economically feasible.…
(more)
▼ With the advent of aging oilfields and extraction in extreme conditions, artificial lift has become a necessity to make certain fields technically and economically feasible. One artificial lift method which has high throughput and can be adapted to a variety of production situations is electric submersible pumps. One issue with these pumps is their natural inability to handle two phase gas-liquid flow without considerable loss or failure in performance. A pump, the Baker Hughes Centrilift G470 multi-vane pump (MVP) was developed to handle two phase flow. To understand the flow patterns and phenomena that occur in the pump over a variety of conditions, a
full scale,
full speed, moderate pressure, and transparent pump was designed and constructed at the Texas A&M University Turbomachinery Laboratory. The closed loop test facility then provides a means for flow visualization of predicted recirculation, bubble coalescence, and stagnation. The pump was designed and constructed using the SLA manufacturing process with a polycarbonate casing for optimal clarity and safety. High speed photography with lighting sources allowed visualization through the eye of the impeller and in the channels of the diffuser. Recirculation between the blades of the impeller was observed. Within the diffuser, large recirculation zones on the suction side of the vane were observed blocking up to 75% of the diffuser channel outlet. Further analysis using advanced flow velocity measurements such as PIV or DGV will more fully characterize the pump. This will allow improvement of CFD simulations and even pump design.
Advisors/Committee Members: Morrison, Gerald L (advisor), Randall, Robert E (committee member), Ranjan, Devesh (committee member).
Subjects/Keywords: Electric Submersible Pump; Two Phase; Bubble, Full Scale; Visualization
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APA (6th Edition):
Marchetti, J. M. (2013). Design, Construction, and Visualization of Transparent Full Scale High Pressure Test Facility for Electronic Submersible Pumps. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/151714
Chicago Manual of Style (16th Edition):
Marchetti, Joseph Michael. “Design, Construction, and Visualization of Transparent Full Scale High Pressure Test Facility for Electronic Submersible Pumps.” 2013. Masters Thesis, Texas A&M University. Accessed March 06, 2021.
http://hdl.handle.net/1969.1/151714.
MLA Handbook (7th Edition):
Marchetti, Joseph Michael. “Design, Construction, and Visualization of Transparent Full Scale High Pressure Test Facility for Electronic Submersible Pumps.” 2013. Web. 06 Mar 2021.
Vancouver:
Marchetti JM. Design, Construction, and Visualization of Transparent Full Scale High Pressure Test Facility for Electronic Submersible Pumps. [Internet] [Masters thesis]. Texas A&M University; 2013. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/1969.1/151714.
Council of Science Editors:
Marchetti JM. Design, Construction, and Visualization of Transparent Full Scale High Pressure Test Facility for Electronic Submersible Pumps. [Masters Thesis]. Texas A&M University; 2013. Available from: http://hdl.handle.net/1969.1/151714
6.
Dave, Rushangkumar.
Full scale testing of corrugated metal culvert pipe rehabilitated with shotcrete liner.
Degree: Civil Engineering, 2019, University of Manitoba
URL: http://hdl.handle.net/1993/33743
► This thesis focusses on the development of full-scale experimental program for testing rehabilitated metal culvert pipe assembled from corrugated steel plates and development of testing…
(more)
▼ This thesis focusses on the development of
full-
scale experimental program for testing
rehabilitated metal culvert pipe assembled from corrugated steel plates and development of testing facility for testing rehabilitated structures until failure. The metal culvert pipe in arch geometry was rehabilitated using steel fiber reinforced shotcrete liner reinforced with pre-rolled reinforcement bars and studs. The condition of distressed field structures was simulated by inducing the crown defect along the longitudinal seams, where all the crown bolts were removed. The rehabilitated culvert pipe was buried in 0.6 m of shallow soil cover and was tested statically under simulated single wheel pair pad loading representing the geometry of CL-625 ONT dual tire truck footprint. The performance of the rehabilitated test culvert pipe was monitored during backfilling and during live load testing. Then, the rehabilitated test culvert pipe was loaded to its ultimate limit state until the failure of compacted granular fill surface at the top. Results showed that, the ultimate limit state was achieved at a load approximately eight times the service load. The conduit walls of shotcrete lined test culvert pipe exhibited relatively rigid behaviour with very low horizontal and vertical deflections at ultimate limit state. At the load equal to almost four times the service load, the rehabilitated culvert pipe showed tensile cracking at the crown location along the longitudinal seam where the crack propagated throughout the length of the pipe. No signs of circumferential cracking were observed in the test pipe at any load stage. Assessment of composite interaction behaviour of metal culvert pipe—rebar—shotcrete liner showed that no interaction was achieved at the crown location while
full interaction was achieved at shoulder and spring lines. Rebar cage embedded in the shotcrete liner enhanced the flexural rigidity of the liner in addition to providing it with more ductility.
Advisors/Committee Members: Svecova, Dagmar (Civil Engineering), Blatz, James (Civil Engineering).
Subjects/Keywords: Corrugated; Culvert; shotcrete; Full-scale; Metal plate culvert; shotcrete liner
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APA (6th Edition):
Dave, R. (2019). Full scale testing of corrugated metal culvert pipe rehabilitated with shotcrete liner. (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/33743
Chicago Manual of Style (16th Edition):
Dave, Rushangkumar. “Full scale testing of corrugated metal culvert pipe rehabilitated with shotcrete liner.” 2019. Masters Thesis, University of Manitoba. Accessed March 06, 2021.
http://hdl.handle.net/1993/33743.
MLA Handbook (7th Edition):
Dave, Rushangkumar. “Full scale testing of corrugated metal culvert pipe rehabilitated with shotcrete liner.” 2019. Web. 06 Mar 2021.
Vancouver:
Dave R. Full scale testing of corrugated metal culvert pipe rehabilitated with shotcrete liner. [Internet] [Masters thesis]. University of Manitoba; 2019. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/1993/33743.
Council of Science Editors:
Dave R. Full scale testing of corrugated metal culvert pipe rehabilitated with shotcrete liner. [Masters Thesis]. University of Manitoba; 2019. Available from: http://hdl.handle.net/1993/33743
KTH
7.
Söderlind, Viktor.
Arkitekturens tillstånd.
Degree: Architecture, 2018, KTH
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-228482
► Vi ville, med en fysisk struktur som slutmål, undersöka och reflektera kring vilka svårigheter och möjligheter som byggd arkitektur möter. I ett försök att…
(more)
▼ Vi ville, med en fysisk struktur som slutmål, undersöka och reflektera kring vilka svårigheter och möjligheter som byggd arkitektur möter. I ett försök att inledningsvis frigöra oss från en alltför formalistisk arbetsprocess utgick vi från leken som en kreativ katalysator. Leken, och speciellt den lekande människan, kom att informera projektet på era sätt. Exempelvis har det hela tiden funnits en stark känsla av serendipitet under projektutvecklingen som vi bejakat och tagit på allvar. Vi har drivits av ett lätt situationistiskt tankesätt, där handling, speciellt under projektets tidiga faser, tilllåtits gå före rigid logik. Med visst instämmande i Debords resonemang i Skådespelarsamhället har vi velat bryta mot skolans och samhällets passiviserande inverkan.
We wanted to, with a physical structure, investigate and reflect on the difficulties and opportunities that built architecture meets. In an attempt to initially free ourselves from an overly formalistic work process, we saw the art of play as a catalyst for creativity. The play, and especially the playful human, influenced the project in several ways. For example, there has always been a strong sense of serendipity during the project development. We have been driven by a situationist mindset, in which action, especially during the early stages of the project, has prevailed over planning. In agreement with Debord’s reasoning in “The Society of the Spectacle” and Lefebvres “Right to the City”, we saw an opportunity to go against the passivizing influence induced by school and society.
Subjects/Keywords: arkitektur; byggsystem; ken isaacs; full scale; Architecture; Arkitektur
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APA (6th Edition):
Söderlind, V. (2018). Arkitekturens tillstånd. (Thesis). KTH. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-228482
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Söderlind, Viktor. “Arkitekturens tillstånd.” 2018. Thesis, KTH. Accessed March 06, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-228482.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Söderlind, Viktor. “Arkitekturens tillstånd.” 2018. Web. 06 Mar 2021.
Vancouver:
Söderlind V. Arkitekturens tillstånd. [Internet] [Thesis]. KTH; 2018. [cited 2021 Mar 06].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-228482.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Söderlind V. Arkitekturens tillstånd. [Thesis]. KTH; 2018. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-228482
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
KTH
8.
Wolters, Erika.
A mobile art gallery.
Degree: Architecture, 2018, KTH
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-223739
► Most art galleries around the world look the same; a large white room with a few artworks placed far apart. This standard way of…
(more)
▼ Most art galleries around the world look the same; a large white room with a few artworks placed far apart. This standard way of designing art spaces together with locating them almost exclusively in the city centers makes them both physically and culturally distant for many people. This project aims to explore other ways of displaying art to make it accessible to more people through small architectural interventions. It is an exploration about the relation between space the body and the object. A prototype for a mobile art gallery has been built as a testing device.
Subjects/Keywords: Art; Mobile; Full scale; built; Konst; byggt; Architecture; Arkitektur
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Manager
APA (6th Edition):
Wolters, E. (2018). A mobile art gallery. (Thesis). KTH. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-223739
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Wolters, Erika. “A mobile art gallery.” 2018. Thesis, KTH. Accessed March 06, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-223739.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Wolters, Erika. “A mobile art gallery.” 2018. Web. 06 Mar 2021.
Vancouver:
Wolters E. A mobile art gallery. [Internet] [Thesis]. KTH; 2018. [cited 2021 Mar 06].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-223739.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Wolters E. A mobile art gallery. [Thesis]. KTH; 2018. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-223739
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Notre Dame
9.
Devin A. Brown.
Analysis of Wind-Induced Acceleration and Pressure Data from
an Eight-Hundred-Foot Building</h1>.
Degree: Civil and Environmental Engineering and Earth
Sciences, 2003, University of Notre Dame
URL: https://curate.nd.edu/show/s4655d8944r
► Full-scale monitoring of structures is extremely important for better understanding their behavior under environmental loads. Structural properties, e.g., natural frequencies and damping of structures,…
(more)
▼ Full-
scale monitoring of structures is
extremely important for better understanding their behavior under
environmental loads. Structural properties, e.g., natural
frequencies and damping of structures, as-built, can be determined
from measured response time histories using system identification
techniques. Measurements made at different amplitudes of motion
also help in capturing the variations in both frequency and damping
parameters with response level. This thesis
examined acceleration data from an 800-ft building in Boston to
identify the in-situ dynamic properties of the structure. The
frequency and damping estimates were compared using spectral and
random decrement techniques. The influence of limited data
available for this study and the inherent biases associated with
these techniques were discussed. The close coupling of the sway and
torsion modes and the manifested beating phenomenon were peculiar
characteristics of this structure that add to the difficulty in the
estimation of damping. This thesis also examined
full-
scale surface
pressure data measured on this building. The data was statistically
analyzed to gain better understanding of the action of wind on
bluff structures with separated flow
regions.
Advisors/Committee Members: Tracy Kijewski-Correa, Committee Member, Lynn Salvati, Committee Member, Ahsan Kareem, Committee Chair.
Subjects/Keywords: Wind; Full-Scale; High-Rise
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APA (6th Edition):
Brown, D. A. (2003). Analysis of Wind-Induced Acceleration and Pressure Data from
an Eight-Hundred-Foot Building</h1>. (Thesis). University of Notre Dame. Retrieved from https://curate.nd.edu/show/s4655d8944r
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Brown, Devin A.. “Analysis of Wind-Induced Acceleration and Pressure Data from
an Eight-Hundred-Foot Building</h1>.” 2003. Thesis, University of Notre Dame. Accessed March 06, 2021.
https://curate.nd.edu/show/s4655d8944r.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Brown, Devin A.. “Analysis of Wind-Induced Acceleration and Pressure Data from
an Eight-Hundred-Foot Building</h1>.” 2003. Web. 06 Mar 2021.
Vancouver:
Brown DA. Analysis of Wind-Induced Acceleration and Pressure Data from
an Eight-Hundred-Foot Building</h1>. [Internet] [Thesis]. University of Notre Dame; 2003. [cited 2021 Mar 06].
Available from: https://curate.nd.edu/show/s4655d8944r.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Brown DA. Analysis of Wind-Induced Acceleration and Pressure Data from
an Eight-Hundred-Foot Building</h1>. [Thesis]. University of Notre Dame; 2003. Available from: https://curate.nd.edu/show/s4655d8944r
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Kansas State University
10.
Spaw, Christopher Alan.
1219
Colorado.
Degree: Masters of Architecture, Landscape Architecture/Regional
and Community Planning, 2005, Kansas State University
URL: http://hdl.handle.net/2097/78
► 1219 Colorado is the documentation of the nonlinear process of design as it applies to the reconfiguration of a residential dwelling. This process is illustrated…
(more)
▼ 1219 Colorado is the documentation of the nonlinear
process of design as it applies to the reconfiguration of a
residential dwelling. This process is illustrated through a
collection of sketches, design drawings, construction documents and
images produced from 1999 to 2005. 1219 Colorado investigates
materiality the physical substance of architecture, as well as the
nature of thoughtful connection physical and theoretical through
the process of making. The need to build, to make, to design, and
explore is what drives the process. While the space of architecture
is most often designed and perceived as lines on paper, it is
through the making of physical models that the creative act of
discovery reveals its greatest potential.
The process explores
the design of a model constructed at
full-
scale. No longer
representational, the study is the product; the materials and
methods are genuine. This process differs from the process of
building in that the intention is no longer to construct only that
which is designed. Rather the challenge is to explore beyond the
design, reveal new possibilities, refine design decisions, and most
importantly to take advantage of unforeseen opportunities that are
revealed through the act of making.
The scope of the task
expanded periodically as a function of increasing knowledge of
construction, declining acceptance of the quality of the existing
condition and in order to accommodate an evolving set of
programmatic requirements. To date the construct has under gone no
less than three different design schemes, and a fourth will follow
as the process continues to be refined and reconsidered. The
project continues to evolve, grow, and change directions. 1219
Colorado explores design is not a linear process. Architecture is
not always pretty.
Advisors/Committee Members: Vladimir Krstic (advisor).
Subjects/Keywords: Architecture
(0729); Full-scale
model
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APA (6th Edition):
Spaw, C. A. (2005). 1219
Colorado. (Masters Thesis). Kansas State University. Retrieved from http://hdl.handle.net/2097/78
Chicago Manual of Style (16th Edition):
Spaw, Christopher Alan. “1219
Colorado.” 2005. Masters Thesis, Kansas State University. Accessed March 06, 2021.
http://hdl.handle.net/2097/78.
MLA Handbook (7th Edition):
Spaw, Christopher Alan. “1219
Colorado.” 2005. Web. 06 Mar 2021.
Vancouver:
Spaw CA. 1219
Colorado. [Internet] [Masters thesis]. Kansas State University; 2005. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/2097/78.
Council of Science Editors:
Spaw CA. 1219
Colorado. [Masters Thesis]. Kansas State University; 2005. Available from: http://hdl.handle.net/2097/78
Virginia Tech
11.
Jain, Nonish.
Developing and Validating New Bolted End-Plate Moment Connection Configurations.
Degree: MS, Civil Engineering, 2015, Virginia Tech
URL: http://hdl.handle.net/10919/56598
► This research has been aimed to introduce larger moment carrying connections for any type of buildings, in particular the metal building industry. A total of…
(more)
▼ This research has been aimed to introduce larger moment carrying connections for any type of buildings, in particular the metal building industry. A total of four connection configurations, namely eight-bolt extended four wide, eight-bolt extended stiffened, six bolt flush unstiffened and twelve bolt extended unstiffened, have been investigated. The last two configurations are proposed whereas the first two configurations have been tested before, but the design procedures need to be validated against the test results.
Design procedures, namely yield line analysis and bolt force models, were proposed to calculate moment capacity for end-plate yielding, moment capacity at bolt rupture with prying action and moment capacity at bolt rupture without prying action. The calculated values from these procedures were compared with the values obtained from the experimental test data available (whether from the literature or from this testing program).
The experimental data from already tested configurations, eight-bolt extended four wide and eight-bolt extended stiffened, was analyzed. It was concluded that for the eight-bolt extended four wide configuration, the experimental values matched with the calculated values. For the eight-bolt extended stiffened configuration reasonable match was found between the experimentally obtained data and theoretically calculated values only for shallower depths. Hence, it was concluded that two deeper tests need to be performed for this configuration.
A
full-
scale testing program was conducted for ten specimens covering three configurations. The two new configurations (six bolt flush unstiffened and twelve bolt multiple row extended unstiffened) were designed for a shallow and deep beam depth and the behavior of each depth observed for a thin end-plate and a thick end-plate respectively (four tests for each configuration). Also, two deep beam tests, one each for thick and thin plate behavior, were done for the eight-bolt extended stiffened configuration. Based on the comparison, it was determined whether the predicted values were in reasonable agreement with the experimental values or not.
The design procedures for both the new configurations appear to be validated for a range of design parameters. The calculated moment capacities for bolt rupture, based on the nominal material properties, were found to be safe when compared with the experimentally obtained moments. The calculations for end-plate yield moments was within ±10% of the experimental yield moment. Also, for the deep tests for eight-bolt extended stiffened the yield line analysis seems to be a valid model and the bolt force model appears to be safe in comparison to the experimental values.
Advisors/Committee Members: Eatherton, Matthew Roy (committeechair), Murray, Thomas M. (committee member), Leon, Roberto T. (committee member).
Subjects/Keywords: End-Plate Moment Connections; Monotonic Full-Scale Testing and Metal Buildings
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APA (6th Edition):
Jain, N. (2015). Developing and Validating New Bolted End-Plate Moment Connection Configurations. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/56598
Chicago Manual of Style (16th Edition):
Jain, Nonish. “Developing and Validating New Bolted End-Plate Moment Connection Configurations.” 2015. Masters Thesis, Virginia Tech. Accessed March 06, 2021.
http://hdl.handle.net/10919/56598.
MLA Handbook (7th Edition):
Jain, Nonish. “Developing and Validating New Bolted End-Plate Moment Connection Configurations.” 2015. Web. 06 Mar 2021.
Vancouver:
Jain N. Developing and Validating New Bolted End-Plate Moment Connection Configurations. [Internet] [Masters thesis]. Virginia Tech; 2015. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/10919/56598.
Council of Science Editors:
Jain N. Developing and Validating New Bolted End-Plate Moment Connection Configurations. [Masters Thesis]. Virginia Tech; 2015. Available from: http://hdl.handle.net/10919/56598
Utah State University
12.
Cox, Brandon L.
Full Scale Experimental Testing of Partially Composite Precast Concrete Sandwich Panels.
Degree: MS, Civil and Environmental Engineering, 2018, Utah State University
URL: https://digitalcommons.usu.edu/etd/6982
► Precast concrete sandwich panels are a structural system consisting of concrete layers with insulation layers in between. The concrete layers are connected through the…
(more)
▼ Precast concrete sandwich panels are a structural system consisting of concrete layers with insulation layers in between. The concrete layers are connected through the insulation with specially designed connectors. For engineers to properly design and analyze the strength characteristics of sandwich panels and their connectors, the engineers need to obtain recommendations from the individual connector manufacturers, which can be a very rigorous process. This project tested eight
full scale precast concrete sandwich panels with two concrete layers on either side of an insulation layer with connectors concentrated at either end of each panel. The objectives of this project were to evaluate the interaction between the two concrete layers and how well the connectors transferred forces between the layers (percent of composite action) and to validate simplified methods of predicting properties of the panels by comparing the predicted panel properties to the results of the testing series. Additionally, this study evaluated the panel’s different thicknesses and lengths and compared their results.
Advisors/Committee Members: Marc Maguire, ;.
Subjects/Keywords: Full Scale Testing; Sandwich Panels; Civil and Environmental Engineering
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Manager
APA (6th Edition):
Cox, B. L. (2018). Full Scale Experimental Testing of Partially Composite Precast Concrete Sandwich Panels. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/6982
Chicago Manual of Style (16th Edition):
Cox, Brandon L. “Full Scale Experimental Testing of Partially Composite Precast Concrete Sandwich Panels.” 2018. Masters Thesis, Utah State University. Accessed March 06, 2021.
https://digitalcommons.usu.edu/etd/6982.
MLA Handbook (7th Edition):
Cox, Brandon L. “Full Scale Experimental Testing of Partially Composite Precast Concrete Sandwich Panels.” 2018. Web. 06 Mar 2021.
Vancouver:
Cox BL. Full Scale Experimental Testing of Partially Composite Precast Concrete Sandwich Panels. [Internet] [Masters thesis]. Utah State University; 2018. [cited 2021 Mar 06].
Available from: https://digitalcommons.usu.edu/etd/6982.
Council of Science Editors:
Cox BL. Full Scale Experimental Testing of Partially Composite Precast Concrete Sandwich Panels. [Masters Thesis]. Utah State University; 2018. Available from: https://digitalcommons.usu.edu/etd/6982
13.
Habbouche, Jhony.
Structural Coefficients of High Polymer Modified Asphalt Mixes Based on Mechanistic-Empirical Analyses and Full-Scale Pavement Testing.
Degree: 2019, University of Nevada – Reno
URL: http://hdl.handle.net/11714/5697
► Asphalt concrete (AC) mixtures have been used as driving surfaces for flexibles pavements since the early 1900s. With the increase of highway traffic volume and…
(more)
▼ Asphalt concrete (AC) mixtures have been used as driving surfaces for flexibles pavements since the early 1900s. With the increase of highway traffic volume and axle loads, the introduction of modified asphalt binders provided transportation agencies an effective tool to design balanced asphalt mixtures that can resist conflicting distresses such as permanent deformation and fatigue cracking while maintaining good long-term durability (i.e., reduced moisture damage and aging). While polymer modified asphalt (PMA) mixtures, with 2-3% polymer content, have shown improved long-term performance, it is also believed that asphalt mixtures with high polymer (HP) content (i.e., >6% polymer content) may offer additional advantages in flexible pavements subjected to heavy and slow-moving traffic loads. The main objective of this study is to conduct an in-depth and comprehensive evaluation of asphalt mixtures in the state of Florida with a high polymer (HP) modified asphalt binder with approximately 7.5% Styrene-Butadiene-Styrene (SBS) polymer. The study combines the following five major aspects: (1) Literature Review: information and findings from the literature review on the performance of HP asphalt binders and mixtures in the laboratory and in the field were collected. In addition, attempts to determine a structural capacity for HP AC mixes using available data were executed. (2) Extensive laboratory evaluation of HP asphalt binder and mixtures: PMA and HP asphalt binders sampled from two different sources were evaluated in terms of long-term aging susceptibility to observe and quantify the influence of binder modification on the oxidative aging characteristics of these asphalt binders. Additionally, A total of 8 PMA and 8 HP AC mixes were manufactured and designed using PMA and HP asphalt binders and were evaluated in terms of engineering properties (i.e., stiffness) and performance characteristics (i.e., resistance to rutting, fatigue cracking, top-down cracking, and reflective cracking). (3) Advanced mechanistic analysis under heavy moving loads using 3D-MOVE: the developed properties and characteristics of PMA and HP mixtures were implemented in the 3D-MOVE model to determine the responses and performance of PMA and HP pavement sections under various loading conditions. Using the pavement responses from 3D-MOVE along with the performance models for the PMA and HP asphalt mixtures for rutting in AC and fatigue cracking, structural coefficients of the HP modified asphalt mixtures were determined using the fixed service life approach based on the fatigue performance life and verified against other distress modes (i.e., AC and total rutting, top-down cracking, and reflective cracking). (4)
Full-
scale pavement testing using PaveBox: the 11 feet width by 11 feet depth by 7 feet height PaveBox served as a
full-
scale laboratory tool to verify the structural coefficients developed and checked previously. (5) Advanced numerical modeling of PaveBox using FLAC3D (Fast Lagragian Analysis of Continua in 3-Dimensions): the…
Advisors/Committee Members: Sebaaly, Peter E. (advisor), Hajj, Elie Y. (advisor), Hand, Adam J. T (committee member), Siddharthan, Raj V (committee member), Zaliapin, Ilya (committee member).
Subjects/Keywords: distress; full-scale pavement; instrumentation; mechanistic analysis; modified binder; rheology
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Export
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Manager
APA (6th Edition):
Habbouche, J. (2019). Structural Coefficients of High Polymer Modified Asphalt Mixes Based on Mechanistic-Empirical Analyses and Full-Scale Pavement Testing. (Thesis). University of Nevada – Reno. Retrieved from http://hdl.handle.net/11714/5697
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Habbouche, Jhony. “Structural Coefficients of High Polymer Modified Asphalt Mixes Based on Mechanistic-Empirical Analyses and Full-Scale Pavement Testing.” 2019. Thesis, University of Nevada – Reno. Accessed March 06, 2021.
http://hdl.handle.net/11714/5697.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Habbouche, Jhony. “Structural Coefficients of High Polymer Modified Asphalt Mixes Based on Mechanistic-Empirical Analyses and Full-Scale Pavement Testing.” 2019. Web. 06 Mar 2021.
Vancouver:
Habbouche J. Structural Coefficients of High Polymer Modified Asphalt Mixes Based on Mechanistic-Empirical Analyses and Full-Scale Pavement Testing. [Internet] [Thesis]. University of Nevada – Reno; 2019. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/11714/5697.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Habbouche J. Structural Coefficients of High Polymer Modified Asphalt Mixes Based on Mechanistic-Empirical Analyses and Full-Scale Pavement Testing. [Thesis]. University of Nevada – Reno; 2019. Available from: http://hdl.handle.net/11714/5697
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Notre Dame
14.
Tiphaine Anne Williams.
Wind Effects on Tall Buildings</h1>.
Degree: Civil and Environmental Engineering and Earth
Sciences, 2003, University of Notre Dame
URL: https://curate.nd.edu/show/j6731259k41
► Today’s skyscrapers are reaching greater heights which, increases their sensitivity to wind effects and its potential impact on serviceability and occupant comfort. Therefore, designers…
(more)
▼ Today’s skyscrapers are reaching greater
heights which, increases their sensitivity to wind effects and its
potential impact on serviceability and occupant comfort. Therefore,
designers are faced with the challenge to accurately predict
building response and to ensure that survivability, serviceability,
and habitability criteria are satisfied. This places an emphasis on
prediction, and the implied need for predictive tools. Empirical
models, finite element computer models, and other analysis tools
have been combined with scaled model wind tunnel testing to predict
wind loads on structures and associated response. This study
focuses on benchmarking these predictive tools and procedures
against the actual
full-
scale response of completed buildings,
which is one of a continuing series of studies in this overall
research program. While the major focus of the study is on the
behavior of structural systems, the performance of building
cladding is also examined in light of its vulnerability to extreme
winds.
Advisors/Committee Members: Dr. Tracy Kijewski-Correa, Committee Member, Dr. Ahsan Kareem, Committee Chair, Dr. Lynn Salvati, Committee Member.
Subjects/Keywords: Chicago Full-Scale Monitoring Project; full-scale; tall building response; wind tunnel analysis
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Williams, T. A. (2003). Wind Effects on Tall Buildings</h1>. (Thesis). University of Notre Dame. Retrieved from https://curate.nd.edu/show/j6731259k41
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Williams, Tiphaine Anne. “Wind Effects on Tall Buildings</h1>.” 2003. Thesis, University of Notre Dame. Accessed March 06, 2021.
https://curate.nd.edu/show/j6731259k41.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Williams, Tiphaine Anne. “Wind Effects on Tall Buildings</h1>.” 2003. Web. 06 Mar 2021.
Vancouver:
Williams TA. Wind Effects on Tall Buildings</h1>. [Internet] [Thesis]. University of Notre Dame; 2003. [cited 2021 Mar 06].
Available from: https://curate.nd.edu/show/j6731259k41.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Williams TA. Wind Effects on Tall Buildings</h1>. [Thesis]. University of Notre Dame; 2003. Available from: https://curate.nd.edu/show/j6731259k41
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
NSYSU
15.
Chio, Chia-Shien.
Application and Analysis of Make-up Air Designs in Large Area Smoke Management Systems.
Degree: Master, Mechanical and Electro-Mechanical Engineering, 2008, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0627108-193251
► Many large space buildings have been built in Taiwan during the past decade and people are very concerned about the fire safety inside the large…
(more)
▼ Many large space buildings have been built in Taiwan during the past decade and people are very concerned about the fire safety inside the large space. Therefore, a performance-based smoke management system with makeup air system has been exercised.
For steady flow, the mass flow of air or smoke exhaust from the top of an atrium equals the mass flow of air entering below the smoke layer. This airflow entering the atrium is referred to as makeup air, and the makeup air can be either supplied naturally or by fan power.
In this research, various
full-
scale hot smoke tests for makeup air systems will be performed to evaluate the temperature distribution of smoke layer and the smoke descending rate at ABRI large space fire lab in Tainan.
The experimental results obtained will be utilized as an important reference to establish the code of smoke management system with makeup air system in Taiwan.
Advisors/Committee Members: Lin, Hsien-Te (chair), Yang, Kuan-Hsiung (committee member), Shin-Hung Wang (chair).
Subjects/Keywords: Makeup Air; Full-Scale Hot Smoke Test; Large Space Building; Smoke Management System
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APA ·
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Chio, C. (2008). Application and Analysis of Make-up Air Designs in Large Area Smoke Management Systems. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0627108-193251
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Chio, Chia-Shien. “Application and Analysis of Make-up Air Designs in Large Area Smoke Management Systems.” 2008. Thesis, NSYSU. Accessed March 06, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0627108-193251.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chio, Chia-Shien. “Application and Analysis of Make-up Air Designs in Large Area Smoke Management Systems.” 2008. Web. 06 Mar 2021.
Vancouver:
Chio C. Application and Analysis of Make-up Air Designs in Large Area Smoke Management Systems. [Internet] [Thesis]. NSYSU; 2008. [cited 2021 Mar 06].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0627108-193251.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chio C. Application and Analysis of Make-up Air Designs in Large Area Smoke Management Systems. [Thesis]. NSYSU; 2008. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0627108-193251
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
NSYSU
16.
Dai, Chi-fu.
Development of BEMS Diagnostic and Intelligent Expert Technology for Air-conditioning Systems.
Degree: Master, Mechanical and Electro-Mechanical Engineering, 2012, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0611112-145520
► When central HVAC systems are under commercial operation, all operational parameters, including chilled water supply temperature, return water temperature, chilled water flow rate, and power…
(more)
▼ When central HVAC systems are under commercial operation, all operational parameters, including chilled water supply temperature, return water temperature, chilled water flow rate, and power consumption as the key factors in affecting system energy efficiency.However, in Taiwan there is still lacking of the regression equations of chillers under local weather conditions, and has to rely on manual operation based on experiences. This is also the major short-comings in implementing TAB, and is the best way to renovate the green buildings to make them more intelligent.
In this study, theoretical analysis and experimental investigation will be applied simultaneously. In selecting cases from the BeeUp program, actual operational data including COP can be fitted into experimental model to facilitate TAB engineering via BEMS system, in achieving system efficiency.
Through the execution of this project, it is identified that the exhibition buildings with 10 hours cooling load, can achieve 7% energy savings. The good result obtained in this project , including the thermal energy storage HVAC system and the heat pump system can be widely adapted to obtain significant energy conservation effect.
Advisors/Committee Members: Kuan-Hsiung Yang (committee member), Shih Hung Wang (chair), Ru Yang (committee member), Shian De Lin (chair).
Subjects/Keywords: BEMS; System Diagnostics; Full-scale Experimental investigation; energy conservation effect; HVAC system
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Manager
APA (6th Edition):
Dai, C. (2012). Development of BEMS Diagnostic and Intelligent Expert Technology for Air-conditioning Systems. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0611112-145520
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Dai, Chi-fu. “Development of BEMS Diagnostic and Intelligent Expert Technology for Air-conditioning Systems.” 2012. Thesis, NSYSU. Accessed March 06, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0611112-145520.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Dai, Chi-fu. “Development of BEMS Diagnostic and Intelligent Expert Technology for Air-conditioning Systems.” 2012. Web. 06 Mar 2021.
Vancouver:
Dai C. Development of BEMS Diagnostic and Intelligent Expert Technology for Air-conditioning Systems. [Internet] [Thesis]. NSYSU; 2012. [cited 2021 Mar 06].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0611112-145520.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Dai C. Development of BEMS Diagnostic and Intelligent Expert Technology for Air-conditioning Systems. [Thesis]. NSYSU; 2012. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0611112-145520
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Texas A&M University
17.
Asadollahipajouh, Mojdeh.
Experimental and Numerical Investigation of Impact Loads on a Group of Piles.
Degree: PhD, Civil Engineering, 2015, Texas A&M University
URL: http://hdl.handle.net/1969.1/156459
► Groups of in-line piles connected by beams are being used to contain errant vehicles for perimeter protection of infrastructures. Moreover, piles can be used as…
(more)
▼ Groups of in-line piles connected by beams are being used to contain errant vehicles for perimeter protection of infrastructures. Moreover, piles can be used as roadside safety devices resisting against impact loading. The effectiveness of in-line groups of piles to safely redirect or stop the approaching vehicles, however, has not been well investigated from the geotechnical point of view. The seriousness of the failure of such systems requires the development of reliable design guidelines for functional and cost-effective impact resistant systems. To date, such guidelines are limited and new barrier configurations rely mostly on
full scale crash testing to be certified before they can be used. However, the extensive test setup, instrumentation and considerable cost of such crash tests have limited the practicality of running many of those tests. Numerical simulations are very useful to extend the values of the crash tests.
In this research, the performance of such barriers is examined through
full-
scale crash tests and numerical simulations. The
full scale crash tests consisted of two different configurations of piles and beams: one was in loose sand and the other in hard clay. Both barriers were subjected to vehicle impact: one by a 6800 kg medium-duty truck traveling with the approaching velocity of 80 km/h and the other by a 2300 kg pickup truck with an approaching velocity of 100 km/h. Both barriers successfully contained the impacting vehicles. Detailed finite element models of the barriers and the soil were developed using LS-DYNA a powerful numerical package and then combined with the vehicle models to simulate the dynamic events. Comparison between predicted and measured behavior was used to calibrate the models. Once calibrated, additional simulations were performed to create a comprehensive database to further study the impact response of these systems. Practical recommendations are drawn from the experimental and numerical work.
Using the numerical simulation results and the experimental data, a simple yet effective model TAMU-POST (Group) was successfully developed to predict the lateral response of in-line piles embedded in any soil type subjected to impact of a vehicle through a nonlinear impact analysis. It was shown that the developed simplified mass-spring-dashpot analogy method with the calibrated constants for damping gives a remarkably good estimate of the barrier deflection measured in the tests and simulations. Two
full scale impact experiments and approximately 100 numerical simulations of impact events using LS-DYNA were used to assess the precision of TAMU-POST. After calibration against the
full scale crash tests, additional numerical simulations were performed to study the influence of important design parameters including mass and velocity of vehicle, soil strength, pile spacing and embedment depth was performed. Finally, the uncertainties in estimates of the model inputs such as soil properties and the model parameters were acknowledged through a reliability analysis and the…
Advisors/Committee Members: Briaud, Jean-Louis (advisor), Aubeny, Charles (committee member), Biscontin, Giovanna (committee member), Cline, Daren (committee member).
Subjects/Keywords: Full-Scale Tests; Numerical Modeling; LS-DYNA; Group Piles; Impact Loading; Crash Analysis
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APA (6th Edition):
Asadollahipajouh, M. (2015). Experimental and Numerical Investigation of Impact Loads on a Group of Piles. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/156459
Chicago Manual of Style (16th Edition):
Asadollahipajouh, Mojdeh. “Experimental and Numerical Investigation of Impact Loads on a Group of Piles.” 2015. Doctoral Dissertation, Texas A&M University. Accessed March 06, 2021.
http://hdl.handle.net/1969.1/156459.
MLA Handbook (7th Edition):
Asadollahipajouh, Mojdeh. “Experimental and Numerical Investigation of Impact Loads on a Group of Piles.” 2015. Web. 06 Mar 2021.
Vancouver:
Asadollahipajouh M. Experimental and Numerical Investigation of Impact Loads on a Group of Piles. [Internet] [Doctoral dissertation]. Texas A&M University; 2015. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/1969.1/156459.
Council of Science Editors:
Asadollahipajouh M. Experimental and Numerical Investigation of Impact Loads on a Group of Piles. [Doctoral Dissertation]. Texas A&M University; 2015. Available from: http://hdl.handle.net/1969.1/156459
Texas A&M University
18.
Desorcie, Felicia J.
Development of a Non-pinned Low-profile End Treatment.
Degree: MS, Civil Engineering, 2013, Texas A&M University
URL: http://hdl.handle.net/1969.1/151825
► In the early 1990s, the Low-Profile Portable Concrete Barrier (PCB) system, including both the sloped Low-Profile PCB segment and Low-Profile PCB end treatment, were developed.…
(more)
▼ In the early 1990s, the Low-Profile Portable Concrete Barrier (PCB) system, including both the sloped Low-Profile PCB segment and Low-Profile PCB end treatment, were developed. The original Low-Profile PCB end treatment was designed with steel pins inserted along the barrier centerline, through precast holes, and anchored to the pavement or subgrade. The purpose of these pins was to reduce lateral deflection of the end treatment during an impact. For various reasons, users of the Low-Profile PCB system have stated that the system would be more easily deployed if the vertical pins were not used in situations where lateral deflections can be permitted. The primary objective of the research presented herein was to determine the feasibility of removing the vertical, steel pins from the Low-Profile PCB end treatment in certain applications and if necessary make modifications. The secondary objective of the research presented herein was to demonstrate the applicability of the finite element analysis (FEA) to unpinned barrier systems.
The research objectives were achieved through the use of sound engineering judgment, FEA, and a
full-
scale crash test. Based on sound engineering judgment and approximate strength analyses of the original Low-Profile PCB design, the author determined the system would most likely function acceptably but would have large lateral deflections. In order to increase connection rigidity and thus control lateral displacement, a plate washer was added to the barrier connection.
The modified non-pinned Low-Profile PCB system was tested for strength in a
full-
scale crash test under Manual for Assessing Safety Hardware (MASH) test 2-35. Additionally, the recommended system was analyzed under similar test conditions with LS-DYNA, a finite element code. The recommended system passed the MASH test 2-35, in both a
full-
scale crash test and FEA. While this does not replace the original barrier, it does provide another option for use of the Low-Profile PCB in situations where sufficient room for deflection outside of the length of need exists. If this room does not exist, the barrier must remain pinned.
Advisors/Committee Members: Beason, William L (advisor), Buth, Carl E (committee member), Childs, Dara W (committee member).
Subjects/Keywords: Low-Profile; Portable Concrete Barrier; Full-Scale Crash Test; Finite Element Analysis; End Treatment
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APA (6th Edition):
Desorcie, F. J. (2013). Development of a Non-pinned Low-profile End Treatment. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/151825
Chicago Manual of Style (16th Edition):
Desorcie, Felicia J. “Development of a Non-pinned Low-profile End Treatment.” 2013. Masters Thesis, Texas A&M University. Accessed March 06, 2021.
http://hdl.handle.net/1969.1/151825.
MLA Handbook (7th Edition):
Desorcie, Felicia J. “Development of a Non-pinned Low-profile End Treatment.” 2013. Web. 06 Mar 2021.
Vancouver:
Desorcie FJ. Development of a Non-pinned Low-profile End Treatment. [Internet] [Masters thesis]. Texas A&M University; 2013. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/1969.1/151825.
Council of Science Editors:
Desorcie FJ. Development of a Non-pinned Low-profile End Treatment. [Masters Thesis]. Texas A&M University; 2013. Available from: http://hdl.handle.net/1969.1/151825
University of Wisconsin – Milwaukee
19.
Alizadeh, Vahid.
A Rapid Construction Technique for Bridge Abutments Using Controlled Low Strength Materials (CLSM).
Degree: PhD, Engineering, 2013, University of Wisconsin – Milwaukee
URL: https://dc.uwm.edu/etd/556
► The required time for building bridge abutments is one of the key obstacles facing rapid bridge construction. For typical span bridges, this can be…
(more)
▼ The required time for building bridge abutments is one of the key obstacles facing rapid bridge construction. For typical span bridges, this can be remedied by using Controlled Low Strength Materials (CLSM) as backfill materials placed behind
full-height precast concrete panels that are integrated with the CLSM backfill via steel anchors. CLSM bridge abutments can be constructed in a short time as they do not require heavy machinery for excavation, compaction, and piling equipment. The main objective of this study was to examine the behavior of an instrumented laboratory large-
scale CLSM bridge abutment with
full-height precast concrete panels that was subjected to a monotonically increasing sill (foundation) pressure. The experiment showed that the CLSM bridge abutment, with a relatively short cure time of 7 days, is capable of carrying typical bridge loads with a reasonably large safety margin, and with minimal deformations.
To select a suitable CLSM mixture proportion, several mixtures were developed and tested in the laboratory for engineering properties including flowability, density, compressive strength and stress-strain behavior. The main performance criteria for selection of a potential CLSM mixture were compressive strength to support the bridge loads, excavatability and flowability to fill the entire abutment in one continuous pour. Since it was a critical area of concern in design of the CLSM bridge abutment, the bond strength performance of the CLSM to steel anchors was also investigated. In pullout tests, a CLSM mixture with higher compressive strength resulted in higher bond strength and more brittle slippage. A numerical simulation of pullout tests indicated that the bond strength decreases with increase in bar size and embedment length.
Finite element method (FEM) of analysis was implemented to simulate and explore the performance of CLSM bridge abutments based on bearing pressure capacity, displacements, and the developed axial force in anchors, and to provide an assessment of safety of the design. The accuracy of the finite element results for the response and failure behavior of a CLSM mass was evaluated by a comparison with the experimental results. Good agreement was obtained between the numerical and experimental results. The validated finite element (FE) model was then used for conducting a series of parametric studies to define the effects of CLSM compressive strength, curing age, environment temperature and construction details on response of the abutments. It was also learned that the computed and measured lateral displacements for the facing panels were negligible up to about 70% of the bearing pressure capacity of the abutment when a longitudinal crack developed in the CLSM backfill close to the facing wall.
Advisors/Committee Members: Sam Helwany.
Subjects/Keywords: Abutments; Bridges; CLSM; Full-scale Test; Pull-out Test; Rapid Construction; Civil Engineering; Geotechnical Engineering
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APA (6th Edition):
Alizadeh, V. (2013). A Rapid Construction Technique for Bridge Abutments Using Controlled Low Strength Materials (CLSM). (Doctoral Dissertation). University of Wisconsin – Milwaukee. Retrieved from https://dc.uwm.edu/etd/556
Chicago Manual of Style (16th Edition):
Alizadeh, Vahid. “A Rapid Construction Technique for Bridge Abutments Using Controlled Low Strength Materials (CLSM).” 2013. Doctoral Dissertation, University of Wisconsin – Milwaukee. Accessed March 06, 2021.
https://dc.uwm.edu/etd/556.
MLA Handbook (7th Edition):
Alizadeh, Vahid. “A Rapid Construction Technique for Bridge Abutments Using Controlled Low Strength Materials (CLSM).” 2013. Web. 06 Mar 2021.
Vancouver:
Alizadeh V. A Rapid Construction Technique for Bridge Abutments Using Controlled Low Strength Materials (CLSM). [Internet] [Doctoral dissertation]. University of Wisconsin – Milwaukee; 2013. [cited 2021 Mar 06].
Available from: https://dc.uwm.edu/etd/556.
Council of Science Editors:
Alizadeh V. A Rapid Construction Technique for Bridge Abutments Using Controlled Low Strength Materials (CLSM). [Doctoral Dissertation]. University of Wisconsin – Milwaukee; 2013. Available from: https://dc.uwm.edu/etd/556
University of South Florida
20.
Rice, Madison Leigh.
Enhanced Fluoride Removal in Biosand Filters Using Aluminum Oxide Coated Media and Modified Filter Design.
Degree: 2020, University of South Florida
URL: https://scholarcommons.usf.edu/etd/8288
► In 2010, the UN formally stated that access to safe drinking water and sanitation is a human right. Yet, one in three people globally do…
(more)
▼ In 2010, the UN formally stated that access to safe drinking water and sanitation is a human right. Yet, one in three people globally do not have access to safe drinking water. Contaminated drinking water can negatively impact the health of consumers. This is a challenge that disproportionally affects developing regions, where limited access to resources exacerbates the problem. One drinking water contaminant of concern is fluoride. Fluoride is often added in low concentrations to drinking water to enhance consumers’ dental health. However, when water with high concentrations of fluoride is consumed frequently, it can have negative health effects, such as dental and skeletal fluorosis.
Biosand filters (BSFs) are a point of use drinking water treatment system that is widely used in developing regions. BSFs utilize both mechanical and biological filtration to achieve excellent removal of bacteria and organic matter. Fluoride, however, is not removed effectively by BSFs. The goal of this research was to modify the already successful technology of the BSF with a new design, filter media, and media coating to make it able to remove fluoride.
Along with the traditional sand, pumice and biochar were used as BSF media. Batch fluoride adsorption experiments were carried out on aluminum oxide coated sand, pumice, and biochar. Coated sand removed 26% of fluoride, while coated pumice removed 54.4%. Neither sand nor pumice were able to achieve fluoride concentrations below the World Health Organization (WHO) limit of safe consumption (<1.5 mg/L). Aluminum oxide coated biochar, on the other hand, achieved concentrations well below the WHO limit and removed 97% of fluoride.
The new BSF design consisted of a two-stage system, where the first stage provided removal of organics and suspended solids and the second stage modified for fluoride removal. Sand and pumice were coated with aluminum oxide, a known adsorbent of fluoride. Five BSFs were constructed in the University of South Florida (USF) Botanical Gardens. Three contained uncoated sand, pumice, or biochar, in both the first and second stage. The remaining two filters contained uncoated media in the first stage and coated media in the second stage for sand and pumice. A new in-situ coating method was tested to coat the pumice and sand, resulting in the production of aluminum oxide gel in the filters.
The BSFs were operated five days per week for 38 days. Turbidity, UV254, flow rate, and pH were measured daily while E. coli and aluminum concentrations were measured once per week. Fluoride was measured every other day. The coating method significantly reduced the flow rate of the sand from an average of 144 mL/min uncoated to an average of 83 mL/min coated, while the uncoated and coated pumice filters averaged 278 mL/min and 268 mL/min, respectively. The biochar filter and the uncoated sand filter had similar average flow rates of 152 mL/min and 144 mL/min, respectively. All filters had similar removal of turbidity (88-90%), except the coated pumice, which removed only 79%,…
Subjects/Keywords: Biochar; Drinking Water Treatment; Full-Scale; Point of Use; Pumice; Environmental Engineering
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APA (6th Edition):
Rice, M. L. (2020). Enhanced Fluoride Removal in Biosand Filters Using Aluminum Oxide Coated Media and Modified Filter Design. (Thesis). University of South Florida. Retrieved from https://scholarcommons.usf.edu/etd/8288
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Rice, Madison Leigh. “Enhanced Fluoride Removal in Biosand Filters Using Aluminum Oxide Coated Media and Modified Filter Design.” 2020. Thesis, University of South Florida. Accessed March 06, 2021.
https://scholarcommons.usf.edu/etd/8288.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Rice, Madison Leigh. “Enhanced Fluoride Removal in Biosand Filters Using Aluminum Oxide Coated Media and Modified Filter Design.” 2020. Web. 06 Mar 2021.
Vancouver:
Rice ML. Enhanced Fluoride Removal in Biosand Filters Using Aluminum Oxide Coated Media and Modified Filter Design. [Internet] [Thesis]. University of South Florida; 2020. [cited 2021 Mar 06].
Available from: https://scholarcommons.usf.edu/etd/8288.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Rice ML. Enhanced Fluoride Removal in Biosand Filters Using Aluminum Oxide Coated Media and Modified Filter Design. [Thesis]. University of South Florida; 2020. Available from: https://scholarcommons.usf.edu/etd/8288
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Houston
21.
Tan, Sinjaya.
Structural Behavior of Thin Prestressed Slab Beams in Bridges.
Degree: PhD, Civil Engineering, 2014, University of Houston
URL: http://hdl.handle.net/10657/1621
► In recent years, the need to rehabilitate or replace many short-span old bridges in the most economical way has given rise to the idea of…
(more)
▼ In recent years, the need to rehabilitate or replace many short-span old bridges in the most economical way has given rise to the idea of designing a wide-and-shallow beam, so called Thin Prestressed Slab Beams (TPSBs). TPSBs are cost-effective owing to: (1) simple formwork, (2) simple reinforcement detailing, (3) ease of quality control, and (4) overall performance given that their behavior is more like slabs (governed by flexure) than beams (governed by flexure/shear). The Texas Department of Transportation (TxDOT), in 2003, officially introduced TPSBs with 305 mm (12 in.) and 381 mm (15 in.) in height, 1.22 m (4 ft.) and 1.52 m (5 ft.) in width, and up to 12.2 m (40 ft.) in length. The shear reinforcement design in TPSBs is guided by the AASHTO LRFD Specification. No tests on such TPSBs, however, had been performed in the past.
This research had four main objectives: (1) to characterize the behavior of TPSBs and their failure modes, i.e., flexure, shear, and/or anchorage bond; (2) to evaluate the
effectiveness of shear reinforcement; (3) to check whether the shear design provisions in AASHTO LRFD are applicable to the design of TPSBs; and (4) to provide design
recommendations for TPSBs.
The test results of
full-
scale TPSBs showed that the failure mode of TPSBs was governed by either a non-ductile anchorage bond failure or flexural failure. Anchorage bond failure resulted in lower capacity than those failing in flexure and/or shear.
Advisors/Committee Members: Hsu, Thomas T. C. (advisor), Mo, Yi-Lung (committee member), Belarbi, Abdeldjelil (committee member), Mansour, Mohamad (committee member), Laskar, Arghadeep (committee member).
Subjects/Keywords: Prestressed concrete beam; Full-scale experiments; Anchorage bond; Design equation; Finite element analysis
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APA ·
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CSE |
Export
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APA (6th Edition):
Tan, S. (2014). Structural Behavior of Thin Prestressed Slab Beams in Bridges. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/1621
Chicago Manual of Style (16th Edition):
Tan, Sinjaya. “Structural Behavior of Thin Prestressed Slab Beams in Bridges.” 2014. Doctoral Dissertation, University of Houston. Accessed March 06, 2021.
http://hdl.handle.net/10657/1621.
MLA Handbook (7th Edition):
Tan, Sinjaya. “Structural Behavior of Thin Prestressed Slab Beams in Bridges.” 2014. Web. 06 Mar 2021.
Vancouver:
Tan S. Structural Behavior of Thin Prestressed Slab Beams in Bridges. [Internet] [Doctoral dissertation]. University of Houston; 2014. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/10657/1621.
Council of Science Editors:
Tan S. Structural Behavior of Thin Prestressed Slab Beams in Bridges. [Doctoral Dissertation]. University of Houston; 2014. Available from: http://hdl.handle.net/10657/1621
University of Cambridge
22.
Fleming, Patrick Hugh.
Variations in low-grade wood modification and stress lamination.
Degree: PhD, 2018, University of Cambridge
URL: https://doi.org/10.17863/CAM.43447
;
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.787759
► Sitka spruce (Picea sitchensis) trees in UK forests are expected to yield nearly 30% more softwood than current levels in the coming decades. These are…
(more)
▼ Sitka spruce (Picea sitchensis) trees in UK forests are expected to yield nearly 30% more softwood than current levels in the coming decades. These are relatively fast-growing trees, yielding low-grade wood that is incompatible with standards for glue-based lamination. Alongside this forecasted increase, there is a major worldwide shift towards building taller and faster with massive laminated and engineered wood products, mainly as substitutes for steel and concrete. For making the best use of the expected increase in UK softwood and also to expand the scope of tall wood construction, alternative ways of working with low-grade wood are needed, along with developing new variations of existing techniques in processing and construction. This thesis examines two strategies: wood modification by impregnation and stress lamination. The former involves treating wood under pressure in a liquid solution. Once impregnated, the liquid is then solidified in-situ, grafting onto the wood to enhance its properties through direct molecular interactions in the cell wall. While wood treatments are usually done to increase durability, literature and preliminary small-scale testing suggest that impregnation can also lead to increases in stiffness and strength. Compared to wood modification, stress lamination is a relatively simple yet effective technique, and is useful for laminating wood without glue. Although widely used in timber bridges, stress lamination has found little to no application in buildings, primarily due to concerns regarding losses in prestress levels from creep and the moisture-related movement and shrinkage of wood. Scale models and testing emphasise the technique's potential for both standard and bespoke structural elements for buildings. Full-scale detailing, construction, and testing of straight columns further establishes structural performance and feasibility. Test results from shearing five full-scale stress-laminated connections show performance beyond that of conventional mechanical fasteners. Twenty-five columns were also tested at full-scale, showing comparable buckling performance to Eurocode estimates for solid timber. Examples from literature and a new detail with overdried hardwood plates, tested during a six-month period, demonstrate that prestress losses can be mitigated to ensure long-term reliability in buildings. The full-scale testing performed in this thesis therefore highlights the usefulness, performance, and reliability of stress lamination with low-grade wood for multi-storey construction.
Subjects/Keywords: timber; wood modification; stress lamination; prestress; column; buckling; full-scale testing; low-grade wood; construction
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APA ·
Chicago ·
MLA ·
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CSE |
Export
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APA (6th Edition):
Fleming, P. H. (2018). Variations in low-grade wood modification and stress lamination. (Doctoral Dissertation). University of Cambridge. Retrieved from https://doi.org/10.17863/CAM.43447 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.787759
Chicago Manual of Style (16th Edition):
Fleming, Patrick Hugh. “Variations in low-grade wood modification and stress lamination.” 2018. Doctoral Dissertation, University of Cambridge. Accessed March 06, 2021.
https://doi.org/10.17863/CAM.43447 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.787759.
MLA Handbook (7th Edition):
Fleming, Patrick Hugh. “Variations in low-grade wood modification and stress lamination.” 2018. Web. 06 Mar 2021.
Vancouver:
Fleming PH. Variations in low-grade wood modification and stress lamination. [Internet] [Doctoral dissertation]. University of Cambridge; 2018. [cited 2021 Mar 06].
Available from: https://doi.org/10.17863/CAM.43447 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.787759.
Council of Science Editors:
Fleming PH. Variations in low-grade wood modification and stress lamination. [Doctoral Dissertation]. University of Cambridge; 2018. Available from: https://doi.org/10.17863/CAM.43447 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.787759
University of Cambridge
23.
Fleming, Patrick Hugh.
Variations in low-grade wood modification and stress lamination.
Degree: PhD, 2018, University of Cambridge
URL: https://www.repository.cam.ac.uk/handle/1810/296397
► Sitka spruce (Picea sitchensis) trees in UK forests are expected to yield nearly 30% more softwood than current levels in the coming decades. These are…
(more)
▼ Sitka spruce (Picea sitchensis) trees in UK forests are expected to yield nearly 30% more softwood than current levels in the coming decades. These are relatively fast-growing trees, yielding low-grade wood that is incompatible with standards for glue-based lamination. Alongside this forecasted increase, there is a major worldwide shift towards building taller and faster with massive laminated and engineered wood products, mainly as substitutes for steel and concrete. For making the best use of the expected increase in UK softwood and also to expand the scope of tall wood construction, alternative ways of working with low-grade wood are needed, along with developing new variations of existing techniques in processing and construction. This thesis examines two strategies: wood modification by impregnation and stress lamination. The former involves treating wood under pressure in a liquid solution. Once impregnated, the liquid is then solidified in-situ, grafting onto the wood to enhance its properties through direct molecular interactions in the cell wall. While wood treatments are usually done to increase durability, literature and preliminary small-scale testing suggest that impregnation can also lead to increases in stiffness and strength. Compared to wood modification, stress lamination is a relatively simple yet effective technique, and is useful for laminating wood without glue. Although widely used in timber bridges, stress lamination has found little to no application in buildings, primarily due to concerns regarding losses in prestress levels from creep and the moisture-related movement and shrinkage of wood. Scale models and testing emphasise the technique’s potential for both standard and bespoke structural elements for buildings. Full-scale detailing, construction, and testing of straight columns further establishes structural performance and feasibility. Test results from shearing five full-scale stress-laminated connections show performance beyond that of conventional mechanical fasteners. Twenty-five columns were also tested at full-scale, showing comparable buckling performance to Eurocode estimates for solid timber. Examples from literature and a new detail with overdried hardwood plates, tested during a six-month period, demonstrate that prestress losses can be mitigated to ensure long-term reliability in buildings. The full-scale testing performed in this thesis therefore highlights the usefulness, performance, and reliability of stress lamination with low-grade wood for multi-storey construction.
Subjects/Keywords: timber; wood modification; stress lamination; prestress; column; buckling; full-scale testing; low-grade wood; construction
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Record Details
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Fleming, P. H. (2018). Variations in low-grade wood modification and stress lamination. (Doctoral Dissertation). University of Cambridge. Retrieved from https://www.repository.cam.ac.uk/handle/1810/296397
Chicago Manual of Style (16th Edition):
Fleming, Patrick Hugh. “Variations in low-grade wood modification and stress lamination.” 2018. Doctoral Dissertation, University of Cambridge. Accessed March 06, 2021.
https://www.repository.cam.ac.uk/handle/1810/296397.
MLA Handbook (7th Edition):
Fleming, Patrick Hugh. “Variations in low-grade wood modification and stress lamination.” 2018. Web. 06 Mar 2021.
Vancouver:
Fleming PH. Variations in low-grade wood modification and stress lamination. [Internet] [Doctoral dissertation]. University of Cambridge; 2018. [cited 2021 Mar 06].
Available from: https://www.repository.cam.ac.uk/handle/1810/296397.
Council of Science Editors:
Fleming PH. Variations in low-grade wood modification and stress lamination. [Doctoral Dissertation]. University of Cambridge; 2018. Available from: https://www.repository.cam.ac.uk/handle/1810/296397
Université Catholique de Louvain
24.
Whenham, Valérie.
Power transfer and vibrator-pile-soil interactions within the framework of vibratory pile driving.
Degree: 2011, Université Catholique de Louvain
URL: http://hdl.handle.net/2078.1/75975
► The vibratory driving technique is used for driving piles and sheet piles into the ground, by imparting to the profile a longitudinal vibratory motion. Performance…
(more)
▼ The vibratory driving technique is used for driving piles and sheet piles into the ground, by imparting to the profile a longitudinal vibratory motion. Performance of the technique results from interactions between the driving unit, the pile and the soil. The objective of the present thesis is to develop a better understanding of those interactions.
The research is based on a detailed study of experimental results, consisting in full scale vibratory driving tests and experience databases. A large amount of data was available thanks to the partners (and other participating organizations) of this research (BBRI, Arcelor-Mittal, Deltares, LCPC). A new full scale test campaign was also conducted in Limelette (Belgium) for investigating specific questions such as the influence of vibratory parameters and sheet pile movements on the efficiency of the technique, in terms of both driving time and power consumption. Analysis of the experimental results has allowed some shortcomings in the current methods addressing pile vibrodrivability to be identified. Shortcomings are mainly related to the assumptions regarding the vibratory action actually applied to the pile (force and frequency), the (sheet) pile movement, and the definition of soil parameters.
The second part of the thesis is devoted to the improvement of vibrodriving prediction methods based on theoretical and experimental conclusions. In particular, suggestions are made to correct the definition of the vibratory force and to account for the possible influence of power limitation coming from the power pack. In that process, the definitions of the soil parameters are revisited based on the literature and experimental studies. Also the possibility of extending vibrodriving models for the prediction of power consumption is investigated, as well as the possibility to override the rigid body assumption through use of the finite element approach.
Le vibrofonçage est utilisé pour foncer des pieux et palplanches dans le sol, en imposant au profil à foncer un mouvement vibratoire longitudinal. Les performances de cette technique résultent des interactions entre l’équipement de vibrofonçage, le pieu et le sol. L’objectif de la présente recherche est de développer une meilleure compréhension de ces interactions.
La recherche se base sur une étude détaillée de résultats expérimentaux, issus d’essais de vibrofonçage en vraie grandeur et de bases de données constituées de relevés d’expériences. Une grande quantité de données était disponible grâce aux partenaires de la recherche, et autres organismes participant (BBRI, Arcelor-Mittal, Deltares, LCPC). Une nouvelle campagne d’essais en vraie grandeur a également été menée à Limelette (Belgique) pour investiguer des questions plus spécifiques telles que l’influence des paramètres de vibrofonçage et l’influence des mouvements de la palplanche sur l’efficacité de la technique, en termes de vitesse de fonçage et consommation énergétique. L’analyse de ces résultats expérimentaux a permis d’identifier des lacunes dans les méthodes…
Advisors/Committee Members: UCL - SST/IMMC/GCE - Civil and environmental engineering, Holeyman, Alain, Winckelmans, Grégoire, Degrande, Geert, Huybrechts, Noel, Papalexandris, Miltiadis, van Tol, Frits.
Subjects/Keywords: Vibratory driving; Efficiency; Interaction; Power consumption; Full scale test; Experience database; Predictive model; Geotechnical engineering
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APA (6th Edition):
Whenham, V. (2011). Power transfer and vibrator-pile-soil interactions within the framework of vibratory pile driving. (Thesis). Université Catholique de Louvain. Retrieved from http://hdl.handle.net/2078.1/75975
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Whenham, Valérie. “Power transfer and vibrator-pile-soil interactions within the framework of vibratory pile driving.” 2011. Thesis, Université Catholique de Louvain. Accessed March 06, 2021.
http://hdl.handle.net/2078.1/75975.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Whenham, Valérie. “Power transfer and vibrator-pile-soil interactions within the framework of vibratory pile driving.” 2011. Web. 06 Mar 2021.
Vancouver:
Whenham V. Power transfer and vibrator-pile-soil interactions within the framework of vibratory pile driving. [Internet] [Thesis]. Université Catholique de Louvain; 2011. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/2078.1/75975.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Whenham V. Power transfer and vibrator-pile-soil interactions within the framework of vibratory pile driving. [Thesis]. Université Catholique de Louvain; 2011. Available from: http://hdl.handle.net/2078.1/75975
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Brunel University
25.
Massara, Theoni Maria.
Development of a novel model to quantify nitrous oxide emissions in the biological nutrient removal process of wastewater treatment plants.
Degree: PhD, 2018, Brunel University
URL: http://bura.brunel.ac.uk/handle/2438/18203
;
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.774559
► This thesis aimed to develop a novel mathematical tool for the mitigation of nitrous oxide (N2O) emissions in wastewater treatment plants (WWTPs). Considering that N2O…
(more)
▼ This thesis aimed to develop a novel mathematical tool for the mitigation of nitrous oxide (N2O) emissions in wastewater treatment plants (WWTPs). Considering that N2O is a greenhouse gas with a grave global warming impact, tools for the prediction of N2O production in WWTPs are essential to accurately estimate the emissions and effectively reduce them. The first chapter reviewed past studies focusing on the N2O generation in WWTPs. The major findings underlined the need to optimise the applied WWTP processes and use models that consider multiple N2O production pathways and changes of majorly influencing operational factors (e.g. dissolved oxygen, DO). The second chapter presented the development of an N2O model following the widely accepted International Water Association (IWA) Activated Sludge Model (ASM) structure that described the operation of a full-scale anaerobic-anoxic-aerobic municipal WWTP. The simulation results showed that low-aeration strategies require optimisation to avoid unstable nitrification and increased N2O production via the nitrification-related pathways. The third chapter introduced an ASM-type N2O model for the operation of a real full-scale municipal WWTP that provided data for the model calibration. The simulation results indicated that lower DO setpoints than those documented during the monitoring campaign can be applied to decease energy requirements without observing higher N2O emission. The fourth chapter explored the development of an N2O model based on an alternative concept that describes the complex electron transfer processes of the bacterial populations involved in the N2O production. The developed model was adapted to the operation of a real full-scale municipal WWTP that provided data for the model calibration and validation. The results showed how important the applied aeration regime is while considering mitigation strategies. This last chapter emphasised how errors/inconsistencies in the sampling campaigns can lead to the development of inaccurate models if these data are used for calibration/validation purposes.
Subjects/Keywords: Production pathways; Emission factor; Activated sludge model; Sequencing batch reactor; Full-scale
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APA (6th Edition):
Massara, T. M. (2018). Development of a novel model to quantify nitrous oxide emissions in the biological nutrient removal process of wastewater treatment plants. (Doctoral Dissertation). Brunel University. Retrieved from http://bura.brunel.ac.uk/handle/2438/18203 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.774559
Chicago Manual of Style (16th Edition):
Massara, Theoni Maria. “Development of a novel model to quantify nitrous oxide emissions in the biological nutrient removal process of wastewater treatment plants.” 2018. Doctoral Dissertation, Brunel University. Accessed March 06, 2021.
http://bura.brunel.ac.uk/handle/2438/18203 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.774559.
MLA Handbook (7th Edition):
Massara, Theoni Maria. “Development of a novel model to quantify nitrous oxide emissions in the biological nutrient removal process of wastewater treatment plants.” 2018. Web. 06 Mar 2021.
Vancouver:
Massara TM. Development of a novel model to quantify nitrous oxide emissions in the biological nutrient removal process of wastewater treatment plants. [Internet] [Doctoral dissertation]. Brunel University; 2018. [cited 2021 Mar 06].
Available from: http://bura.brunel.ac.uk/handle/2438/18203 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.774559.
Council of Science Editors:
Massara TM. Development of a novel model to quantify nitrous oxide emissions in the biological nutrient removal process of wastewater treatment plants. [Doctoral Dissertation]. Brunel University; 2018. Available from: http://bura.brunel.ac.uk/handle/2438/18203 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.774559
KTH
26.
Andreasson, Jenny.
Magnifying the Rural : Moving through the past, present and future of a social space in Västergötland.
Degree: Architecture, 2013, KTH
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-123050
► In this project I have worked with strategies at regional level, as well as with alterations to an existing building, to strengthen and celebrate…
(more)
▼ In this project I have worked with strategies at regional level, as well as with alterations to an existing building, to strengthen and celebrate rural systems in a place called Naum, in Vara municipality in Västergötland. This I've donein order to challenge the dichotomy of urban and rural. I find that urbanity is very often celebrated in the architectural discipline, and in the public debate in general. There is a strong hierarchy of spaces in the national discourse of Sweden. By focusing on a rural space that I perceive have low status and connect it to networks that reach out to other spaces, cities, and regions, I treat the urban and rural as a continuous variation rather than a fixed binary. The binary is also challenged already by people constantly moving across this scale. Most of the residents of Naum, mapped out herecommute to Vara Town, or other adjacent towns or cities to work, to go school, to go the doctor, take part in cultural events etc. This project focus on the power of rural networks, on movement, and on rural systems of cooperation, and then I am making a number of alterations at a zoomed-in scale, to offer the inhabitants a more intimate relationship to this agricultural landscape. My project operate both at the intimate scale of an existing bygdegård, which is a specifically rural community space, in Naum, as well as on the larger scale of Vara municipality.To the bygdegård I propose three small scale alterations, a sauna called the 'Storytelling Sauna' (SECTION S S) an overnight stay shelter called the 'Please Stay',and an imaginative element of a 'Wisching-Well-Ditch”. In the larger scale I propose a strategic alteration to the treatment of roadsides, to increase biodiversity and human movement. I call this alteration the 'Thriving Passages'. The project also consist of this room-installation that we are all inside of, that aim to represent the different scales and allow us to move across them, and it consists of mappings of bygdegårds in Vara municipality and in Sweden and how they are connected by human movement, as well as mappings of historical and agricultural layers of this landscape.
Subjects/Keywords: rural systems; rural; urban; dichotomy; alterations; bygdegård; room-installation; full-scale model
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APA (6th Edition):
Andreasson, J. (2013). Magnifying the Rural : Moving through the past, present and future of a social space in Västergötland. (Thesis). KTH. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-123050
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Andreasson, Jenny. “Magnifying the Rural : Moving through the past, present and future of a social space in Västergötland.” 2013. Thesis, KTH. Accessed March 06, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-123050.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Andreasson, Jenny. “Magnifying the Rural : Moving through the past, present and future of a social space in Västergötland.” 2013. Web. 06 Mar 2021.
Vancouver:
Andreasson J. Magnifying the Rural : Moving through the past, present and future of a social space in Västergötland. [Internet] [Thesis]. KTH; 2013. [cited 2021 Mar 06].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-123050.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Andreasson J. Magnifying the Rural : Moving through the past, present and future of a social space in Västergötland. [Thesis]. KTH; 2013. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-123050
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Washington
27.
Ibarra, Sara Maria.
Experimental Investigation of Chevron Special Concentrically Braced Frames with a Yielding Beam Plastic Mechanism.
Degree: 2018, University of Washington
URL: http://hdl.handle.net/1773/42257
► Chevron-braced frames are preferred structural systems by architects and contractors in low to mid-rise buildings for seismic design because they accommodate architectural elements while providing…
(more)
▼ Chevron-braced frames are preferred structural systems by architects and contractors in low to mid-rise buildings for seismic design because they accommodate architectural elements while providing the necessary lateral stiffness and resistance. This system was more common prior to the advent of Special Concentrically Braced Frame (SCBF) seismic provisions based on capacity design in the late 1980’s, which require that the beam develop the idealized expected unbalanced capacities of
full yielding of the tension brace and degraded capacity of the compression brace. This results in large and costly beams, which deter their use in construction. Previous experimental tests of chevron SCBFs with beam strengths that do not satisfy the theoretical unbalanced force prescribed by AISC SCBF Seismic Provisions result in a yielding beam plastic mechanism. These tests suggest that the current beam strength requirement is not necessary for assuring life safety and collapse prevention. Three single-story chevron SCBFs were tested at the University of Washington to further evaluate the beam yielding mechanism. One of the tested specimens had a beam weaker than any previously tested to establish a lower bound for comparison of seismic performance. A second specimen had A500 Gr. C braces to determine the impact of brace steel type on seismic performance. The third single-story specimen used a deeper beam to determine the effect of beam stiffness on frame resistance and ductility. Finally, a capstone 3-story chevron SCBF was tested at the National Center for Research on Earthquake Engineering in Taiwan to evaluate the system’s performance with a yielding beam. Results show that the beam yielding mechanism improved the deformability of the SCBF and the weaker beam did not compromise the capacity of the system if the beam was not excessively weak.
Advisors/Committee Members: Berman, Jeffrey W (advisor).
Subjects/Keywords: Braced frames; Full-scale tests; Seismic performance; Steel; yielding beam; Civil engineering; Civil engineering
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APA (6th Edition):
Ibarra, S. M. (2018). Experimental Investigation of Chevron Special Concentrically Braced Frames with a Yielding Beam Plastic Mechanism. (Thesis). University of Washington. Retrieved from http://hdl.handle.net/1773/42257
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Ibarra, Sara Maria. “Experimental Investigation of Chevron Special Concentrically Braced Frames with a Yielding Beam Plastic Mechanism.” 2018. Thesis, University of Washington. Accessed March 06, 2021.
http://hdl.handle.net/1773/42257.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ibarra, Sara Maria. “Experimental Investigation of Chevron Special Concentrically Braced Frames with a Yielding Beam Plastic Mechanism.” 2018. Web. 06 Mar 2021.
Vancouver:
Ibarra SM. Experimental Investigation of Chevron Special Concentrically Braced Frames with a Yielding Beam Plastic Mechanism. [Internet] [Thesis]. University of Washington; 2018. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/1773/42257.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ibarra SM. Experimental Investigation of Chevron Special Concentrically Braced Frames with a Yielding Beam Plastic Mechanism. [Thesis]. University of Washington; 2018. Available from: http://hdl.handle.net/1773/42257
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Iowa State University
28.
Kunwar, Niraj.
Automated venetian blinds and lighting integrated into office Building Automation Systems: Full-scale testing and economic analysis.
Degree: 2018, Iowa State University
URL: https://lib.dr.iastate.edu/etd/16929
► The application of interior, dynamically-operated venetian blinds in commercial buildings has been widely considered a promising opportunity to simultaneously save lighting and heating, ventilation and…
(more)
▼ The application of interior, dynamically-operated venetian blinds in commercial buildings has been widely considered a promising opportunity to simultaneously save lighting and heating, ventilation and air conditioning (HVAC) energy, utilize natural daylight, and maintain visual comfort for occupants. Research in recent years, however, has focused mostly on simulation-based efforts to assess the impact of dynamic venetian blinds on daylighting, occupant comfort, and energy performance. What is lacking is the insight from full-scale experimental testing data, and the use of this data to validate the simulation and model-based findings in terms of energy and economic savings. This study thus assesses the impact of dynamically-operated venetian blinds on overall lighting and HVAC energy saving based on full-scale experimental testing carried out in two parallel test rooms. One room acted as a baseline without any shading devices or lighting controls; the second room was equipped with dynamic venetian blinds and dimmable lighting. The dynamic shading and lighting were connected to the building’s Building Automation System (BAS) and testing was carried out using a multi-step control strategy in the spring and summer seasons. Energy data was collected from the lights, as well as from the variable air volume (VAV) terminal boxes in each room which are used to compute the energy consumed for space conditioning. Further, calibrated simulation is used to compute the annual energy saving potential of the system utilized. Finally, a life cycle cost analysis of the system is performed to determine the potential economic viability of the tested system in the existing built environment.
Subjects/Keywords: Dynamic shading; Economic analysis; Full-scale testing; Venetian blinds; Mechanical Engineering; Oil, Gas, and Energy
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APA (6th Edition):
Kunwar, N. (2018). Automated venetian blinds and lighting integrated into office Building Automation Systems: Full-scale testing and economic analysis. (Thesis). Iowa State University. Retrieved from https://lib.dr.iastate.edu/etd/16929
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Kunwar, Niraj. “Automated venetian blinds and lighting integrated into office Building Automation Systems: Full-scale testing and economic analysis.” 2018. Thesis, Iowa State University. Accessed March 06, 2021.
https://lib.dr.iastate.edu/etd/16929.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Kunwar, Niraj. “Automated venetian blinds and lighting integrated into office Building Automation Systems: Full-scale testing and economic analysis.” 2018. Web. 06 Mar 2021.
Vancouver:
Kunwar N. Automated venetian blinds and lighting integrated into office Building Automation Systems: Full-scale testing and economic analysis. [Internet] [Thesis]. Iowa State University; 2018. [cited 2021 Mar 06].
Available from: https://lib.dr.iastate.edu/etd/16929.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Kunwar N. Automated venetian blinds and lighting integrated into office Building Automation Systems: Full-scale testing and economic analysis. [Thesis]. Iowa State University; 2018. Available from: https://lib.dr.iastate.edu/etd/16929
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Iowa State University
29.
Fotouhi, Mohammad.
Dynamic soil-pile interaction by random vibration methods.
Degree: 2014, Iowa State University
URL: https://lib.dr.iastate.edu/etd/14041
► Dynamic soil-foundation interaction is an important consideration in the design of structures subjected to dynamic loads such as earthquakes, wind, machine vibration, vehicle loading, and…
(more)
▼ Dynamic soil-foundation interaction is an important consideration in the design of structures subjected to dynamic loads such as earthquakes, wind, machine vibration, vehicle loading, and impacts. One reason for this importance is that soil-structure interaction (SSI) can have detrimental effects on the dynamic response of soil-foundation-structure systems. However, present theories and solutions for dynamic soil-pile interaction can be quite complex and contain several parameters that are not known with a high degree of certainty. Additionally, several aspects of dynamic soil-pile interaction problems are difficult to characterize accurately, such as the highly-nonhomogeneous spatial distribution of soil properties, the nonlinear and stress-dependent mechanical response of soil, variable soil-pile contact conditions, and complexities of 3D wave propagation in nonhomogeneous media. Despite significant advancements in theoretical and experimental research on dynamic soil-pile interaction, many of the available simplified approaches as well as sophisticated numerical models fail to accurately capture the observed responses from realistic multi-modal experiments.
To help bridge the knowledge-gap between existing theories and experimental observations for dynamic soil-pile interaction problems, a program of full-scale dynamic field tests were performed in this study using two identical H-piles at the same site containing soft clay. One pile was installed in the natural soil profile, and the other was partially embedded in an improved soil-cement zone. A new servo-hydraulic inertial shaker testing system and modular pile-cap were developed, then used to perform forced-vibration tests on the piles using random vibration techniques. Three different types and intensities of broadband excitation were applied to the system using the shaker installed on the pile cap in three different testing configurations. For the first time, the multi-modal vertical-eccentric (VE) dynamic test, first developed for scaled-model geotechnical centrifuge experiments, was performed on full-scale pile foundations in natural soil conditions, and verified to simultaneously capture the important aspects of the vertical, horizontal, and coupled horizontal-rocking modes of vibration. A new set of theoretical centroidal accelerance solutions was developed for the dynamic response of soil-pile systems for which an inertial shaker moving in rigid body motion with the pile-cap provides the excitation.
On the theoretical side, an existing approximate method was evaluated against the experiments as well a rigorous 3D boundary element program. It was shown that the approximate method lacks accuracy in the low frequency region and also in characterizing the vertical mode of vibration for the actual soil and pile conditions encountered. Two sets of shear modulus and damping profiles were introduced based on cone penetration tests and widely-used empirical design equations, and the effect of the dynamic shear strain level in the soil surrounding the pile was…
Subjects/Keywords: boundary element method; full-scale test; random vibration; soil-pile interaction; Civil Engineering; Geotechnical Engineering
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APA (6th Edition):
Fotouhi, M. (2014). Dynamic soil-pile interaction by random vibration methods. (Thesis). Iowa State University. Retrieved from https://lib.dr.iastate.edu/etd/14041
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Fotouhi, Mohammad. “Dynamic soil-pile interaction by random vibration methods.” 2014. Thesis, Iowa State University. Accessed March 06, 2021.
https://lib.dr.iastate.edu/etd/14041.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Fotouhi, Mohammad. “Dynamic soil-pile interaction by random vibration methods.” 2014. Web. 06 Mar 2021.
Vancouver:
Fotouhi M. Dynamic soil-pile interaction by random vibration methods. [Internet] [Thesis]. Iowa State University; 2014. [cited 2021 Mar 06].
Available from: https://lib.dr.iastate.edu/etd/14041.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Fotouhi M. Dynamic soil-pile interaction by random vibration methods. [Thesis]. Iowa State University; 2014. Available from: https://lib.dr.iastate.edu/etd/14041
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Delft University of Technology
30.
Kramers, J. (author).
Global ice ridge ramming loads based on full scale data and specific energy approach.
Degree: 2016, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:1a90ecc5-d3a6-46f9-b1cb-cf820eefa6b2
► This thesis analyses the loads that occurred during an ice ridge ramming experiment with the icebreaker Oden. Sea ice ridges are formed due to breaking…
(more)
▼ This thesis analyses the loads that occurred during an ice ridge ramming experiment with the icebreaker Oden. Sea ice ridges are formed due to breaking and deformation of the ice cover. Wind, current, thermal expansion and Coriolis forces induce compression and shear forces onto level ice which can break the ice into rubble. The blocks of ice rubble are pushed together, forming a wall of broken ice in hydrostatic equilibrium. This wall of broken ice forced up by pressure is defined as an ice ridge. In general ice ridges are long, nonsymmetrical, curvilinear features with a wide variability of sizes and shapes. In Arctic regions, sea ice ridges are often used to calculate the design load in the absence of icebergs. Ice ridges also play a major role in icebreaker efficiency, since an icebreaker might need several ‘rams’ to break through an ice ridge. Ice ridge actions on icebreakers are not completely understood. Complex ice behavior under rapidly applied stress, and the complex geometries of the bodies in contact makes it a challenging research topic. The dynamic behavior of the vessel during the ramming can be used to make an estimate of the ice loads that occurred. This thesis analyses the ice load that occurred during a ridge ramming experiment that was performed with icebreaker Oden during the ODEN AT research cruise project in 2013. To advance our understanding in the global ice ridge ramming loads, twomodels were developed: 1) a simulationmodel using the Specific Energy Absorption (SEA) of mechanical crushing of ice to calculate the global ice loads, 2) a load identification model using
full-
scale data to determine the global ice loads. The simulation model was developed to enhance the understanding of relevant physical phenomena and parameters. During this process, specific energy principles of crushing of ice were identified as a promising although relatively unknown method for impact dynamics into ice. The Specific Energy Absorption (SEA) of mechanical crushing of ice is defined as the energy per unit mass of crushed ice, necessary to turn solid ice into crushed (pulverized) material. Besides the SEA value, the penetration velocity, density of ice, and volume of crushed ice, are required to calculate the ice load. A contact model was developed to determine the load location and direction on the hull. The icebreaker Oden is represented by a nonlinear mass-damper-spring system. Maneuvering theory is applied, which means that the hydrodynamic variables are estimated at one frequency of oscillation. In the simulation model, a known thrust force is applied on the vessel, making it move forward in open water, and then penetrate the ice ridge. The simulation model calculates the ice loads and vessel’s motions (i.e. accelerations, velocity, and displacement). The load identification model combines the Kalman filter and a joint input-state estimate algorithm to estimate the state- and excitation vector from acceleration, velocity and displacement data in 3DOF (i.e. surge, heave, pitch). The joint input-state estimate…
Advisors/Committee Members: Metrikine, A. (mentor), van den Berg, M.A. (mentor), Løset, S. (mentor).
Subjects/Keywords: ice ridges; global ice loads; specific energy; load identification; full-scale data
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APA (6th Edition):
Kramers, J. (. (2016). Global ice ridge ramming loads based on full scale data and specific energy approach. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:1a90ecc5-d3a6-46f9-b1cb-cf820eefa6b2
Chicago Manual of Style (16th Edition):
Kramers, J (author). “Global ice ridge ramming loads based on full scale data and specific energy approach.” 2016. Masters Thesis, Delft University of Technology. Accessed March 06, 2021.
http://resolver.tudelft.nl/uuid:1a90ecc5-d3a6-46f9-b1cb-cf820eefa6b2.
MLA Handbook (7th Edition):
Kramers, J (author). “Global ice ridge ramming loads based on full scale data and specific energy approach.” 2016. Web. 06 Mar 2021.
Vancouver:
Kramers J(. Global ice ridge ramming loads based on full scale data and specific energy approach. [Internet] [Masters thesis]. Delft University of Technology; 2016. [cited 2021 Mar 06].
Available from: http://resolver.tudelft.nl/uuid:1a90ecc5-d3a6-46f9-b1cb-cf820eefa6b2.
Council of Science Editors:
Kramers J(. Global ice ridge ramming loads based on full scale data and specific energy approach. [Masters Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:1a90ecc5-d3a6-46f9-b1cb-cf820eefa6b2
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Open Access Theses and Dissertations
