subject:(Structural engineering)

1. Abbasi, Hassan. Effective Width of Gusset Plate with Single or Double Bolts in Tension.

Degree: MA, Civil and Environmental Engineering, 2009, National Library of Canada

► In this study experimental and numerical investigation to determine the behavior of gusset plate connections with one and two bolts under quasi-static monotonically increasing tension… (more)

Subjects/Keywords: Engineering; Structural.

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APA (6^th Edition):

Abbasi, H. (2009). Effective Width of Gusset Plate with Single or Double Bolts in Tension. (Masters Thesis). National Library of Canada. Retrieved from http://scholar.uwindsor.ca/etd/73

Chicago Manual of Style (16^th Edition):

Abbasi, Hassan. “Effective Width of Gusset Plate with Single or Double Bolts in Tension.” 2009. Masters Thesis, National Library of Canada. Accessed March 03, 2021. http://scholar.uwindsor.ca/etd/73.

MLA Handbook (7^th Edition):

Abbasi, Hassan. “Effective Width of Gusset Plate with Single or Double Bolts in Tension.” 2009. Web. 03 Mar 2021.

Vancouver:

Abbasi H. Effective Width of Gusset Plate with Single or Double Bolts in Tension. [Internet] [Masters thesis]. National Library of Canada; 2009. [cited 2021 Mar 03]. Available from: http://scholar.uwindsor.ca/etd/73.

Council of Science Editors:

Abbasi H. Effective Width of Gusset Plate with Single or Double Bolts in Tension. [Masters Thesis]. National Library of Canada; 2009. Available from: http://scholar.uwindsor.ca/etd/73

2. Ring, Thomas. The Influence of Horizontal Grout Continuity on the Compressive Stength of Concrete Block Masonry.

Degree: MA, Civil and Environmental Engineering, 2009, National Library of Canada

URL: http://scholar.uwindsor.ca/etd/93

► Compression parallel to the bed joint occurs due to flexure in masonry beam elements. Currently, it is believed that there is a reduction in the… (more)

Subjects/Keywords: Engineering; Structural.

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APA (6^th Edition):

Ring, T. (2009). The Influence of Horizontal Grout Continuity on the Compressive Stength of Concrete Block Masonry. (Masters Thesis). National Library of Canada. Retrieved from http://scholar.uwindsor.ca/etd/93

Chicago Manual of Style (16^th Edition):

Ring, Thomas. “The Influence of Horizontal Grout Continuity on the Compressive Stength of Concrete Block Masonry.” 2009. Masters Thesis, National Library of Canada. Accessed March 03, 2021. http://scholar.uwindsor.ca/etd/93.

MLA Handbook (7^th Edition):

Ring, Thomas. “The Influence of Horizontal Grout Continuity on the Compressive Stength of Concrete Block Masonry.” 2009. Web. 03 Mar 2021.

Vancouver:

Ring T. The Influence of Horizontal Grout Continuity on the Compressive Stength of Concrete Block Masonry. [Internet] [Masters thesis]. National Library of Canada; 2009. [cited 2021 Mar 03]. Available from: http://scholar.uwindsor.ca/etd/93.

Council of Science Editors:

Ring T. The Influence of Horizontal Grout Continuity on the Compressive Stength of Concrete Block Masonry. [Masters Thesis]. National Library of Canada; 2009. Available from: http://scholar.uwindsor.ca/etd/93

3. Nazemi, Navid. Behavior of X60 Line Pipe under Combined Axial and Transverse Loads with Internal Pressure.

Degree: MA, Civil and Environmental Engineering, 2009, National Library of Canada

URL: http://scholar.uwindsor.ca/etd/85

► Buried pipeline may be subjected to various complex combinations of forces and deformations. As a result, localized curvature and strains may occur in the pipe… (more)

Subjects/Keywords: Engineering; Structural.

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APA (6^th Edition):

Nazemi, N. (2009). Behavior of X60 Line Pipe under Combined Axial and Transverse Loads with Internal Pressure. (Masters Thesis). National Library of Canada. Retrieved from http://scholar.uwindsor.ca/etd/85

Chicago Manual of Style (16^th Edition):

Nazemi, Navid. “Behavior of X60 Line Pipe under Combined Axial and Transverse Loads with Internal Pressure.” 2009. Masters Thesis, National Library of Canada. Accessed March 03, 2021. http://scholar.uwindsor.ca/etd/85.

MLA Handbook (7^th Edition):

Nazemi, Navid. “Behavior of X60 Line Pipe under Combined Axial and Transverse Loads with Internal Pressure.” 2009. Web. 03 Mar 2021.

Vancouver:

Nazemi N. Behavior of X60 Line Pipe under Combined Axial and Transverse Loads with Internal Pressure. [Internet] [Masters thesis]. National Library of Canada; 2009. [cited 2021 Mar 03]. Available from: http://scholar.uwindsor.ca/etd/85.

Council of Science Editors:

Nazemi N. Behavior of X60 Line Pipe under Combined Axial and Transverse Loads with Internal Pressure. [Masters Thesis]. National Library of Canada; 2009. Available from: http://scholar.uwindsor.ca/etd/85

University of Maine

4. Majeed, Hakeem S. Development of Finite Element Techniques to Simulate Concrete-Filled Fiber-Reinforced Polymer Tube Structures.

Degree: PhD, Civil Engineering, 2019, University of Maine

URL: https://digitalcommons.library.umaine.edu/etd/3127

► This dissertation presents the development of finite-element (FE) techniques to simulate the behavior of concrete-filled fiber reinforced polymer (FRP) tubes (CFFTs) in support of… (more)

▼ This dissertation presents the development of finite-element (FE) techniques to simulate the behavior of concrete-filled fiber reinforced polymer (FRP) tubes (CFFTs) in support of more effective structural design and analysis methods for buried composite arch bridges (BCABs) that use CFFT arches as main structural members. The research includes three specific topics to make contributions in different aspects of the investigation of these complex structures. The first topic is the nonlinear three-dimensional FE modeling of steel-free CFFT splices. For model validation, comparisons were made between the model predictions and control beam and spliced beams with and without internal collars tested by others. The modeling was complex due to the need to capture the nonlinear constitutive response of the confined concrete, simulate concrete-FRP interaction, and explicitly incorporate the splice components. Therefore, the numerical analysis utilized the Abaqus/CAE software package with a modified damage concrete plasticity model to idealize the concretefill. The second topic of this research is the development of a computationally efficient structural FE analysis technique for the second-order inelastic behavior of these CFFT arches that includes initial arch curvature. A curved, planar, corotational, flexibility-based (FB), layered frame element is employed to handle geometric and material nonlinearities. An FRP-confined concrete stress-strain model that explicitly considers the effect of dilation of the concrete core and confinement provide by the FRP tube is implemented. Verification of the FB formulation was carried out for elastic-plastic analysis of a beam and elastic post-buckling analysis of a circular arch. The measured flexural responses of different isolated CFFT arches available in the literature were used to verify the proposed model. The model was shown to accurately predict the load-carrying capacity and ductility of the tested CFFT arches. The model captured arch collapse mechanisms arising from FRP rupture and concrete crushing at the apex of the arches. The third topic is an extension of the planar FB model to three-dimensions and incorporation of a soil-spring model to simulate soil-structure interaction using a recently developed horizontal earth pressure model. The model rigorously incorporates the interaction between axial load and bending effects in the arches and permits the examination of out-of-plane stability and arch deformations due to bridge skew. Parametric studies were conducted to assess the effect of abutment skew angle on the behavior of CFFT arch bridge components, an important practical design consideration. Advisors/Committee Members: William G. Davids, Eric N. Landis, Roberto Lopez-Anido.

Subjects/Keywords: Structural Engineering

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APA (6^th Edition):

Majeed, H. S. (2019). Development of Finite Element Techniques to Simulate Concrete-Filled Fiber-Reinforced Polymer Tube Structures. (Doctoral Dissertation). University of Maine. Retrieved from https://digitalcommons.library.umaine.edu/etd/3127

Chicago Manual of Style (16^th Edition):

Majeed, Hakeem S. “Development of Finite Element Techniques to Simulate Concrete-Filled Fiber-Reinforced Polymer Tube Structures.” 2019. Doctoral Dissertation, University of Maine. Accessed March 03, 2021. https://digitalcommons.library.umaine.edu/etd/3127.

MLA Handbook (7^th Edition):

Majeed, Hakeem S. “Development of Finite Element Techniques to Simulate Concrete-Filled Fiber-Reinforced Polymer Tube Structures.” 2019. Web. 03 Mar 2021.

Vancouver:

Majeed HS. Development of Finite Element Techniques to Simulate Concrete-Filled Fiber-Reinforced Polymer Tube Structures. [Internet] [Doctoral dissertation]. University of Maine; 2019. [cited 2021 Mar 03]. Available from: https://digitalcommons.library.umaine.edu/etd/3127.

Council of Science Editors:

Majeed HS. Development of Finite Element Techniques to Simulate Concrete-Filled Fiber-Reinforced Polymer Tube Structures. [Doctoral Dissertation]. University of Maine; 2019. Available from: https://digitalcommons.library.umaine.edu/etd/3127

Southern Illinois University

5. Shakya, Anuj Man. P-DELTA EFFECTS ON STEEL MOMENT FRAMES WITH REDUCED BEAM SECTION CONNECTION.

Degree: MS, Civil Engineering, 2011, Southern Illinois University

URL: https://opensiuc.lib.siu.edu/theses/702

► The P-delta effect is a second order effect experienced by any structure when subjected to lateral loads like earthquake or wind loads, and is… (more)

Subjects/Keywords: Structural Engineering

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APA (6^th Edition):

Shakya, A. M. (2011). P-DELTA EFFECTS ON STEEL MOMENT FRAMES WITH REDUCED BEAM SECTION CONNECTION. (Masters Thesis). Southern Illinois University. Retrieved from https://opensiuc.lib.siu.edu/theses/702

Chicago Manual of Style (16^th Edition):

Shakya, Anuj Man. “P-DELTA EFFECTS ON STEEL MOMENT FRAMES WITH REDUCED BEAM SECTION CONNECTION.” 2011. Masters Thesis, Southern Illinois University. Accessed March 03, 2021. https://opensiuc.lib.siu.edu/theses/702.

MLA Handbook (7^th Edition):

Shakya, Anuj Man. “P-DELTA EFFECTS ON STEEL MOMENT FRAMES WITH REDUCED BEAM SECTION CONNECTION.” 2011. Web. 03 Mar 2021.

Vancouver:

Shakya AM. P-DELTA EFFECTS ON STEEL MOMENT FRAMES WITH REDUCED BEAM SECTION CONNECTION. [Internet] [Masters thesis]. Southern Illinois University; 2011. [cited 2021 Mar 03]. Available from: https://opensiuc.lib.siu.edu/theses/702.

Council of Science Editors:

Shakya AM. P-DELTA EFFECTS ON STEEL MOMENT FRAMES WITH REDUCED BEAM SECTION CONNECTION. [Masters Thesis]. Southern Illinois University; 2011. Available from: https://opensiuc.lib.siu.edu/theses/702

Cal Poly

6. Sanchez Escalera, Victor M. ENHANCING PROGRESSIVE COLLAPSE RESISTANCE OF STEEL BUILDING FRAMES USING THIN INFILL STEEL PANELS.

Degree: MS, Civil and Environmental Engineering, 2011, Cal Poly

URL: https://digitalcommons.calpoly.edu/theses/499 ; 10.15368/theses.2011.54

► Progressive collapse occurs when damage from a localized first failure spreads in a domino effect manner resulting in a total damage disproportionate to the… (more)

▼ Progressive collapse occurs when damage from a localized first failure spreads in a domino effect manner resulting in a total damage disproportionate to the initial failure. Recent building failures (e.g., World Trade Center twin towers) highlight the catastrophic outcome of progressive collapse. This research proposes a reliable and realistic retrofit technology which installs thin steel panels into steel building structural frames to enhance the system progressive collapse resistance. The steel frames with simple beam-to-column connections, under different boundary conditions (i.e., sidesway uninhibited and sidesway inhibited, respectively), and the loss of one bottom story column were retrofitted using the proposed technology (i.e. installing thin steel panels in the structural frames). Performance of these frames was investigated. Two Finite Element (FE) models which require different modeling efforts were developed to capture the system behavior. The first model explicitly models the infill plates to capture the plate buckling behavior. The second model known as strip model represents the infill panels as diagonal strips. In addition to the FE models, a plastic analysis model derived from the prior research on seismically designed Steel Plate Shear Walls (SPSWs) was considered. The system progressive collapse resistance obtained from the two FE models and the plastic analysis procedure were compared and good agreements were observed. It was observed that installing infill plates to steel structural frames can be an effective approach for enhancing the system progressive collapse resistance. Beyond the strength of the overall system, the Dynamic Increase Factor (DIF) which may be used to amplify the static force on the system to better capture the dynamic nature of progressive collapse demand was evaluated for the retrofitted system. Furthermore, the demands including axial force, shear force and bending moment on individual frame components (i.e., beams and columns) in the retrofitted system were quantified via the nonlinear FE models and a simplified procedure based on free body diagrams (FBDs). Finally, the impact of premature beam-to-column connection failures on the system performance was investigated and it was observed that the retrofitted system is able to provide stable resistance even when connection failures occur in all beams. Advisors/Committee Members: BING QU.

Subjects/Keywords: Structural Engineering

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APA (6^th Edition):

Sanchez Escalera, V. M. (2011). ENHANCING PROGRESSIVE COLLAPSE RESISTANCE OF STEEL BUILDING FRAMES USING THIN INFILL STEEL PANELS. (Masters Thesis). Cal Poly. Retrieved from https://digitalcommons.calpoly.edu/theses/499 ; 10.15368/theses.2011.54

Chicago Manual of Style (16^th Edition):

Sanchez Escalera, Victor M. “ENHANCING PROGRESSIVE COLLAPSE RESISTANCE OF STEEL BUILDING FRAMES USING THIN INFILL STEEL PANELS.” 2011. Masters Thesis, Cal Poly. Accessed March 03, 2021. https://digitalcommons.calpoly.edu/theses/499 ; 10.15368/theses.2011.54.

MLA Handbook (7^th Edition):

Sanchez Escalera, Victor M. “ENHANCING PROGRESSIVE COLLAPSE RESISTANCE OF STEEL BUILDING FRAMES USING THIN INFILL STEEL PANELS.” 2011. Web. 03 Mar 2021.

Vancouver:

Sanchez Escalera VM. ENHANCING PROGRESSIVE COLLAPSE RESISTANCE OF STEEL BUILDING FRAMES USING THIN INFILL STEEL PANELS. [Internet] [Masters thesis]. Cal Poly; 2011. [cited 2021 Mar 03]. Available from: https://digitalcommons.calpoly.edu/theses/499 ; 10.15368/theses.2011.54.

Council of Science Editors:

Sanchez Escalera VM. ENHANCING PROGRESSIVE COLLAPSE RESISTANCE OF STEEL BUILDING FRAMES USING THIN INFILL STEEL PANELS. [Masters Thesis]. Cal Poly; 2011. Available from: https://digitalcommons.calpoly.edu/theses/499 ; 10.15368/theses.2011.54

7. Underberg, Mason Anthony. Experimental Evaluation of Composite Action of Steel Box Truss Towers in Flexure.

Degree: MS, Civil and Environmental Engineering, 2012, South Dakota State University

URL: https://openprairie.sdstate.edu/etd/1348

► An experimental research study was conducted at South Dakota State University to evaluate the composite action exhibited by steel box truss towers in flexure.… (more)

▼ An experimental research study was conducted at South Dakota State University to evaluate the composite action exhibited by steel box truss towers in flexure. Three tower configurations, each with three specimens, were constructed and tested. Strain, slip, deflection, and load measurements were used to assess the performance of each configuration. The specimens were 40 feet long and simply supported. Composite action between adjacent trusses was developed with bolted angle connectors spaced at 10 foot intervals along the specimens. The control configuration consisted of a continuous 40 foot tower segment. The second configuration consisted of a 20 foot tower segment with 10 foot segments attached to each end with splice connectors. The third configuration consisted of two 20 foot tower segments spliced at mid span. Point loads were applied six feet from mid span in both directions. Load was applied as increments of mid span deflection until failure. The study included a literature review, construction, instrumentation, and testing of the specimens, analysis of experimental results, and a finite element parametric study. Experimental results were analyzed to determine the degree of composite action displayed by each configuration. Composite action was characterized by comparing the effective stiffness shown in testing to the stiffness of a similar specimen with fully developed composite action. The parametric study was used to develop a relationship between connection spacing and tower stiffness. Experimental results indicated that bolt slip in splice connectors was initiated at a certain critical load, above which the specimens displayed a reduced stiffness. The configuration with splices at quarter points exhibited a higher degree of composite action than the configuration with splices at mid span. In addition, the configuration with splices at quarter points performed similar to the control specimen throughout the entire load range. Based on effective stiffness, all three configurations can be modeled conservatively by taking the moment of inertia as the summation of the moments of inertia of the individual trusses about their own centroidal axes. In the parametric study, five connection spacing lengths were analyzed, and the results yielded a linear relationship between connection spacing and tower stiffness. Advisors/Committee Members: Nadim J. Wehbe.

Subjects/Keywords: Structural Engineering

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APA (6^th Edition):

Underberg, M. A. (2012). Experimental Evaluation of Composite Action of Steel Box Truss Towers in Flexure. (Masters Thesis). South Dakota State University. Retrieved from https://openprairie.sdstate.edu/etd/1348

Chicago Manual of Style (16^th Edition):

Underberg, Mason Anthony. “Experimental Evaluation of Composite Action of Steel Box Truss Towers in Flexure.” 2012. Masters Thesis, South Dakota State University. Accessed March 03, 2021. https://openprairie.sdstate.edu/etd/1348.

MLA Handbook (7^th Edition):

Underberg, Mason Anthony. “Experimental Evaluation of Composite Action of Steel Box Truss Towers in Flexure.” 2012. Web. 03 Mar 2021.

Vancouver:

Underberg MA. Experimental Evaluation of Composite Action of Steel Box Truss Towers in Flexure. [Internet] [Masters thesis]. South Dakota State University; 2012. [cited 2021 Mar 03]. Available from: https://openprairie.sdstate.edu/etd/1348.

Council of Science Editors:

Underberg MA. Experimental Evaluation of Composite Action of Steel Box Truss Towers in Flexure. [Masters Thesis]. South Dakota State University; 2012. Available from: https://openprairie.sdstate.edu/etd/1348

8. Paul, Jordan Michael. Performance and Design Approaches for Perforated Light-frame Wood Shear Walls.

Degree: MS, Civil and Environmental Engineering, 2012, South Dakota State University

URL: https://openprairie.sdstate.edu/etd/1353

► An experimental research study was conducted to investigate the performance and design of perforated, light-frame wood shear walls. Experimental testing data used for the… (more)

▼ An experimental research study was conducted to investigate the performance and design of perforated, light-frame wood shear walls. Experimental testing data used for the analysis was collected as part of studies conducted by three separate organizations: South Dakota State University, Simpson Strong-Tie Company, and the APA. Data from sixteen configurations with a total of thirty-two specimens were utilized in this study to investigate the performance of the perforated wood walls under shear loading. All of the walls tested were constructed with 2x4 studs and OSB sheathing using either the SSW, PSW, or FTAO design method. Three of the wall specimens were tested at SDSU. In-plane loading was applied to each specimen via a hydraulic actuator attached to one end of the wall top plate. All of the walls were tested using a cyclic loading protocol. During the experimental testing, instrumentation was used to record the load, top plate displacement, and forces in the hold-downs, anchor bolts, and straps. The scope of this study included a literature review of the theoretical background and prior experimental studies, instrumentation plan, construction and physical testing of specimens, data reduction, and a numerical and analytical study of the experimental results. The results showed that the current methods being used in design to calculate hold-down forces are largely non-conservative. Techniques for calculating theoretical strap forces were also investigated, with Diekmann’s method displaying the closest correlation with the experimental strap forces. Of the other two techniques investigated, the drag strut method almost always resulted in non-conservative estimations while the cantilevered beam method was mostly over conservative as well as highly variable in its conservativeness. The conservativeness of the shear wall design methods based on global strength was also examined, with the FTAO method being the most conservative. The FTAO method was also determined to be the most cost effective method to increase the capacity of a standard PSW designed shear wall. Advisors/Committee Members: Shiling Pei.

Subjects/Keywords: Structural Engineering

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APA (6^th Edition):

Paul, J. M. (2012). Performance and Design Approaches for Perforated Light-frame Wood Shear Walls. (Masters Thesis). South Dakota State University. Retrieved from https://openprairie.sdstate.edu/etd/1353

Chicago Manual of Style (16^th Edition):

Paul, Jordan Michael. “Performance and Design Approaches for Perforated Light-frame Wood Shear Walls.” 2012. Masters Thesis, South Dakota State University. Accessed March 03, 2021. https://openprairie.sdstate.edu/etd/1353.

MLA Handbook (7^th Edition):

Paul, Jordan Michael. “Performance and Design Approaches for Perforated Light-frame Wood Shear Walls.” 2012. Web. 03 Mar 2021.

Vancouver:

Paul JM. Performance and Design Approaches for Perforated Light-frame Wood Shear Walls. [Internet] [Masters thesis]. South Dakota State University; 2012. [cited 2021 Mar 03]. Available from: https://openprairie.sdstate.edu/etd/1353.

Council of Science Editors:

Paul JM. Performance and Design Approaches for Perforated Light-frame Wood Shear Walls. [Masters Thesis]. South Dakota State University; 2012. Available from: https://openprairie.sdstate.edu/etd/1353

9. Oppong, Kofi. Structure Alternatives for Local Roads.

Degree: MS, Civil and Environmental Engineering, 2015, South Dakota State University

URL: https://openprairie.sdstate.edu/etd/1785

► A study was conducted to investigate short span innovative bridge elements and systems that are suitable to implement at the local government level in… (more)

▼ A study was conducted to investigate short span innovative bridge elements and systems that are suitable to implement at the local government level in South Dakota. Through extensive literature review of research articles, reports, and existing practices within and outside South Dakota, a comprehensive list of short span innovative bridge elements and systems that are suitable to implement at the local government level has been established. The list was converted into a catalog and divided into techniques, superstructures, substructures, materials, and entire bridge structures. The techniques include using prefabricated bridge elements and systems (PBES) and the jointless bridge. Emphasis was maximum economy with mass-production of prefabricated components. The superstructures include the precast inverted tee beam, precast prestressed adjacent box beam, precast prestressed adjacent deck slab beam, precast double tee beam/the NEXT beam, precast modified beam-in-slab bridge (PMBISB) system, the ultra-high performance concrete (UHPC) waffle bridge deck panel, the precast decked bulb tee beam, used railroad flatcars, wide-flange steel beams, and channel beams placed adjacent to each another. The substructures include the geosynthetic reinforced soil (GRS) abutment, mechanically stabilized earth (MSE) walls with single line pile abutments, and the sheet pile abutment. The materials include UHPC, high performance/high strength lightweight concrete, self-consolidating concrete (SCC), expanded polystyrene (EPS) geofoam, cellular confinement system (CCS), and carbon fiber prestressing strands. The xii entire-bridge-structures include the large precast box culvert and the precast three-sided frame. An estimate of cost was developed for the alternatives listed in the catalog. The cost for each alternative provides a somewhat reliable representation of the average cost of the item per square foot of deck, and was obtained from the literature and state Department of Transportation websites. A list of administrative requirements on local bridge replacements without South Dakota Department of Transportation (SDDOT) or federal assistance was compiled and included in this report. Grant County has already conducted several local bridge replacements without federal assistance and it was therefore one of the sources of information on administrative requirements on local bridge replacements without SDDOT or federal assistance. An evaluation procedure with simple inputs for use by local government decision making was developed. It is the intent that this checklist will lead decision makers through the process of cost and performance evaluation, and finally recommend if the project should be completed locally or using a federal program. Advisors/Committee Members: Allen Jones.

Subjects/Keywords: Structural Engineering

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APA (6^th Edition):

Oppong, K. (2015). Structure Alternatives for Local Roads. (Masters Thesis). South Dakota State University. Retrieved from https://openprairie.sdstate.edu/etd/1785

Chicago Manual of Style (16^th Edition):

Oppong, Kofi. “Structure Alternatives for Local Roads.” 2015. Masters Thesis, South Dakota State University. Accessed March 03, 2021. https://openprairie.sdstate.edu/etd/1785.

MLA Handbook (7^th Edition):

Oppong, Kofi. “Structure Alternatives for Local Roads.” 2015. Web. 03 Mar 2021.

Vancouver:

Oppong K. Structure Alternatives for Local Roads. [Internet] [Masters thesis]. South Dakota State University; 2015. [cited 2021 Mar 03]. Available from: https://openprairie.sdstate.edu/etd/1785.

Council of Science Editors:

Oppong K. Structure Alternatives for Local Roads. [Masters Thesis]. South Dakota State University; 2015. Available from: https://openprairie.sdstate.edu/etd/1785

Lehigh University

10. Castro de Aguiar, Patricia. Space-Time Autoregressive Models For Damage Detection Using Dynamic Sensor Network Data.

Degree: MS, Structural Engineering, 2020, Lehigh University

URL: https://preserve.lehigh.edu/etd/5744

This thesis presents a revised space-time autoregressive (ST-AR) model usingmultiple neighboring orders for damage detection and localization with dynamic sensornetwork data (DSN), where ST-AR residuals were used as damage sensitive feature. Animportant r Advisors/Committee Members: Shamim Pakzad.

Subjects/Keywords: Structural Engineering

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APA (6^th Edition):

Castro de Aguiar, P. (2020). Space-Time Autoregressive Models For Damage Detection Using Dynamic Sensor Network Data. (Thesis). Lehigh University. Retrieved from https://preserve.lehigh.edu/etd/5744

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

Chicago Manual of Style (16^th Edition):

Castro de Aguiar, Patricia. “Space-Time Autoregressive Models For Damage Detection Using Dynamic Sensor Network Data.” 2020. Thesis, Lehigh University. Accessed March 03, 2021. https://preserve.lehigh.edu/etd/5744.

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

MLA Handbook (7^th Edition):

Castro de Aguiar, Patricia. “Space-Time Autoregressive Models For Damage Detection Using Dynamic Sensor Network Data.” 2020. Web. 03 Mar 2021.

Vancouver:

Castro de Aguiar P. Space-Time Autoregressive Models For Damage Detection Using Dynamic Sensor Network Data. [Internet] [Thesis]. Lehigh University; 2020. [cited 2021 Mar 03]. Available from: https://preserve.lehigh.edu/etd/5744.

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

Council of Science Editors:

Castro de Aguiar P. Space-Time Autoregressive Models For Damage Detection Using Dynamic Sensor Network Data. [Thesis]. Lehigh University; 2020. Available from: https://preserve.lehigh.edu/etd/5744

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

University of Cape Town

11. Moodley, Kamlin. A Proper Orthogonal Decomposition-based inverse material parameter optimization method with applications to cardiac mechanics.

Degree: Image, Civil Engineering, 2016, University of Cape Town

URL: http://hdl.handle.net/11427/22777

► We are currently witnessing the advent of a revolutionary new tool for biomedical research. Complex mathematical models of "living cells" are being arranged into representative… (more)

Subjects/Keywords: Structural Engineering

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APA (6^th Edition):

Moodley, K. (2016). A Proper Orthogonal Decomposition-based inverse material parameter optimization method with applications to cardiac mechanics. (Thesis). University of Cape Town. Retrieved from http://hdl.handle.net/11427/22777

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

Chicago Manual of Style (16^th Edition):

Moodley, Kamlin. “A Proper Orthogonal Decomposition-based inverse material parameter optimization method with applications to cardiac mechanics.” 2016. Thesis, University of Cape Town. Accessed March 03, 2021. http://hdl.handle.net/11427/22777.

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

MLA Handbook (7^th Edition):

Moodley, Kamlin. “A Proper Orthogonal Decomposition-based inverse material parameter optimization method with applications to cardiac mechanics.” 2016. Web. 03 Mar 2021.

Vancouver:

Moodley K. A Proper Orthogonal Decomposition-based inverse material parameter optimization method with applications to cardiac mechanics. [Internet] [Thesis]. University of Cape Town; 2016. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/11427/22777.

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

Council of Science Editors:

Moodley K. A Proper Orthogonal Decomposition-based inverse material parameter optimization method with applications to cardiac mechanics. [Thesis]. University of Cape Town; 2016. Available from: http://hdl.handle.net/11427/22777

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

University of Cape Town

12. Rockstroh, Benjamin Andreas. An investigation into the effects of early propping removal on the deflection of reinforced concrete beams.

Degree: MSc (Eng), Civil Engineering, 2018, University of Cape Town

URL: http://hdl.handle.net/11427/29285

► In today’s fast paced construction industry, there is an ever present need to increase productivity and to complete projects as quickly as possible. Reinforced concrete… (more)

▼ In today’s fast paced construction industry, there is an ever present need to increase productivity and to complete projects as quickly as possible. Reinforced concrete is a popular and widely used construction material. However it has the unfortunate drawback in that the concrete requires time to set and gain sufficient strength before loads may be applied and the formwork and props can be removed. It is therefore desirable to keep propping times to a minimum. If the propping is removed too early, there is a risk of the member deflecting excessively and exceeding the maximum allowable limits, or in severe cases it could even lead to a structural failure or collapse. The SANS 2001 code provides recommended propping times for beams and slabs, which can be used as a guideline by building contractors and structural designers. These propping times present a universal approach, which does not consider all the factors that affect deflection. This simplified approach may be considered to be conservative as shorter propping durations could be possible without a loss in performance. The aim of this dissertation is to look into the effects of early propping removal on the longterm deflections of concrete members. This was done by modelling the deflection of a typical reinforced concrete beam at different ages of loading, using three code-based deflection calculation methods. The codes that were used are the South African National Standard (SANS), Eurocode (EC2) and American Concrete Institute code (ACI 318). A detailed literature-based investigation was conducted to determine the factors which affect deflection in reinforced concrete members, as well as the theory behind the code-based deflection calculation procedures. This was followed by the modelling of deflections using the abovementioned methods. Three case studies were performed to determine the effects of early propping removal under different scenarios. The first case study only deals with the effects of early age loading on long-term deflection. As an added point of interest, two different concrete mixes were used, made with two different types of cement. The second case study compares the effect that different levels of relative humidity have on the long term deflection at early ages of loading. Lastly, the effects of concrete strength on long-term deflections at early ages of loading was modelled. The results of the first case study indicated that a reduction in propping time is possible without causing excessive deflections. In the second and third case study is was observed that both the relative humidity and concrete strength respectively have an effect on the long term deflection and therefore also influence the propping time. The study concluded that based on the obtained estimated deflection values using the codebased methods, the propping times provided in the SANS 2001 code may in certain applications be conservative. According to the results obtained from the code-based deflection calculation procedures, it is possible to reduce the propping duration. It… Advisors/Committee Members: Beushausen, Hans (advisor).

Subjects/Keywords: Structural Engineering

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APA (6^th Edition):

Rockstroh, B. A. (2018). An investigation into the effects of early propping removal on the deflection of reinforced concrete beams. (Masters Thesis). University of Cape Town. Retrieved from http://hdl.handle.net/11427/29285

Chicago Manual of Style (16^th Edition):

Rockstroh, Benjamin Andreas. “An investigation into the effects of early propping removal on the deflection of reinforced concrete beams.” 2018. Masters Thesis, University of Cape Town. Accessed March 03, 2021. http://hdl.handle.net/11427/29285.

MLA Handbook (7^th Edition):

Rockstroh, Benjamin Andreas. “An investigation into the effects of early propping removal on the deflection of reinforced concrete beams.” 2018. Web. 03 Mar 2021.

Vancouver:

Rockstroh BA. An investigation into the effects of early propping removal on the deflection of reinforced concrete beams. [Internet] [Masters thesis]. University of Cape Town; 2018. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/11427/29285.

Council of Science Editors:

Rockstroh BA. An investigation into the effects of early propping removal on the deflection of reinforced concrete beams. [Masters Thesis]. University of Cape Town; 2018. Available from: http://hdl.handle.net/11427/29285

University of Cape Town

13. Govender, Nishalin. A parametric investigation into the membrane stresses of hydrostatically loaded circular and elliptic toroidal shells.

Degree: Image, Civil Engineering, 2017, University of Cape Town

URL: http://hdl.handle.net/11427/25284

► This study explores the membrane stresses of hydrostatically loaded elliptical and circular toroidal tanks. Equations are derived, using the membrane theory of shells, to obtain… (more)

Subjects/Keywords: Structural Engineering

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APA (6^th Edition):

Govender, N. (2017). A parametric investigation into the membrane stresses of hydrostatically loaded circular and elliptic toroidal shells. (Thesis). University of Cape Town. Retrieved from http://hdl.handle.net/11427/25284

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

Chicago Manual of Style (16^th Edition):

Govender, Nishalin. “A parametric investigation into the membrane stresses of hydrostatically loaded circular and elliptic toroidal shells.” 2017. Thesis, University of Cape Town. Accessed March 03, 2021. http://hdl.handle.net/11427/25284.

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

MLA Handbook (7^th Edition):

Govender, Nishalin. “A parametric investigation into the membrane stresses of hydrostatically loaded circular and elliptic toroidal shells.” 2017. Web. 03 Mar 2021.

Vancouver:

Govender N. A parametric investigation into the membrane stresses of hydrostatically loaded circular and elliptic toroidal shells. [Internet] [Thesis]. University of Cape Town; 2017. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/11427/25284.

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

Council of Science Editors:

Govender N. A parametric investigation into the membrane stresses of hydrostatically loaded circular and elliptic toroidal shells. [Thesis]. University of Cape Town; 2017. Available from: http://hdl.handle.net/11427/25284

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

University of Utah

14. Hasanbas, Esra. The effect of vibratory screens on supporting structures.

Degree: MS, Civil & Environmental Engineering, 2013, University of Utah

URL: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2376/rec/2482

► The consideration of the dynamic effects of vibrating mineral separators on itssupporting structure is crucial to design a reliable structural support system. This studyevaluates the… (more)

▼ The consideration of the dynamic effects of vibrating mineral separators on itssupporting structure is crucial to design a reliable structural support system. This studyevaluates the dynamic response of steel frame structures subjected to harmonic vibrationscaused by mineral separators (screens). The goals of this study are to determine theparameters controlling the structural response of the supporting system, and to providepractical methods to reduce the vibrations on the steel frames at the design stage.In this study, the behavior of a steel frame structure supporting a vibrating screenwas investigated through numerical analyses and field experiments. The dynamic responseof the supporting frame structure recorded from field experiments was compared tocomputer-based dynamic analysis results. For this purpose, structural models weredeveloped in the software program SAP2000 to predict the dynamic behavior of thesupporting steel frames under harmonic vibrations; whereas, during the field experiments,accelerometers recorded the steel frames' vertical and horizontal dynamic response.The results indicate that the harmonic vibrations caused by the screen can causelarge dynamic amplifications in the vertical direction for expected floor fundamentalfrequencies. Because the system's natural frequency depends on its mass and stiffness,excessive vibration in the supporting structure can be controlled by using passive vibrationcontrol methods such as isolators, dampeners and structural design modifications. In thisthesis, modification of the structural dynamic properties was the only option investigateddue to several restrictions on the other options. Thus, the selected design options dependon the magnitude of the ratio of forcing frequency of the screen and the natural frequency ofthe system f / fn.For the systems investigated, vertical vibrations can be evaluated in isolationconsidering only the bay where the screen is located. The simply supported beams tend toisolate the vertical vibration from the rest of the structure. Whereas vertical vibrations are alocal phenomenon, horizontal vibrations are usually affected by the overall building'sresponse. Finally, it was concluded that the weight of the material in the screen has anegligible effect on the system's frequency, even in the vertical direction.

Subjects/Keywords: Structural Dynamics; Structural Engineering

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APA (6^th Edition):

Hasanbas, E. (2013). The effect of vibratory screens on supporting structures. (Masters Thesis). University of Utah. Retrieved from http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2376/rec/2482

Chicago Manual of Style (16^th Edition):

Hasanbas, Esra. “The effect of vibratory screens on supporting structures.” 2013. Masters Thesis, University of Utah. Accessed March 03, 2021. http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2376/rec/2482.

MLA Handbook (7^th Edition):

Hasanbas, Esra. “The effect of vibratory screens on supporting structures.” 2013. Web. 03 Mar 2021.

Vancouver:

Hasanbas E. The effect of vibratory screens on supporting structures. [Internet] [Masters thesis]. University of Utah; 2013. [cited 2021 Mar 03]. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2376/rec/2482.

Council of Science Editors:

Hasanbas E. The effect of vibratory screens on supporting structures. [Masters Thesis]. University of Utah; 2013. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2376/rec/2482

Cal Poly

15. Bleichner, Noah G. A Comparative Study on Seismic Analysis Methods and the Response of Systems with Classical and Nonclassical Damping.

Degree: MS, Civil and Environmental Engineering, 2020, Cal Poly

URL: https://digitalcommons.calpoly.edu/theses/2231

► This thesis investigated the application of seismic analysis methods and the response of idealized shear frames subjected to seismic loading. To complete this research,… (more)

▼ This thesis investigated the application of seismic analysis methods and the response of idealized shear frames subjected to seismic loading. To complete this research, a Design Basis Earthquake (DBE) for a project site in San Luis Obispo, CA, and five past earthquake records were considered. The DBE was produced per the American Society of Civil Engineers’ Minimum Design Loads for Buildings and Other Structures (ASCE 7-10) and used for application of the Equivalent Lateral Force Procedure (ELFP) and Response Spectrum Analysis (RSA). When applying RSA, the modal peak responses were combined using the Absolute Sum (ABS), Square-Root-of-the-Sum-of-Squares (SRSS), and Complete Quadratic Combination (CQC) method. MATLAB scripts were developed to produce several displacement, velocity, and acceleration spectrums for each earthquake. Moreover, MATLAB scripts were written to yield both analytical and numerical solutions for each system through application of Linear Time History Analysis (THA). To obtain analytical solutions, two implicit forms of the Newmark-beta Method were employed: the Average Acceleration Method and the Linear Acceleration Method. To generate a comparison, the ELFP, RSA, and THA methods were applied to shear frames up to ten stories in height. The system parameters that impacted the accuracy of each method and the response of the systems were analyzed, including the effects of classical damping and nonclassical damping models. In addition to varying levels of Rayleigh damping, non-linear hysteric friction spring dampers (FSDs) were implemented into the systems. The design of the FSDs was based on target stiffness values, which were defined as portions of the system’s lateral stiffness. To perform the required Nonlinear Time History Analysis (NTHA), a SAP2000 model was developed. The efficiencies of the FSDs at each target stiffness, with and without the addition of low levels of viscous modal damping are analyzed. It was concluded that the ELFP should be supplemented by RSA when performing seismic response analysis. Regardless of system parameters, the ELFP yielded system responses 30% to 50% higher than RSA when combing responses with the SRSS or CQC method. When applying RSA, the ABS method produced inconsistent and inaccurate results, whereas the SRSS and CQC results were similar for regular, symmetric systems. Generally, the SRSS and CQC results were within 5% of the analytical solution yielded through THA. On the contrary, for irregular structures, the SRSS method significantly underestimated the response, and the CQC method was four to five times more accurate. Additionally, both the Average Acceleration Method and Linear Acceleration Method yielded numerical solutions with errors typically below 1% when compared with the analytical solution. When implemented into the systems, the FSDs proved to be most efficient when designed to have stiffnesses that were 50% of the lateral stiffness of each story. The addition of 1% modal damping to the FSDs resulted in… Advisors/Committee Members: Eric Kasper.

Subjects/Keywords: Structural Engineering; Seismic; Dynamic; Damping; Structural Engineering

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

APA (6^th Edition):

Bleichner, N. G. (2020). A Comparative Study on Seismic Analysis Methods and the Response of Systems with Classical and Nonclassical Damping. (Masters Thesis). Cal Poly. Retrieved from https://digitalcommons.calpoly.edu/theses/2231

Chicago Manual of Style (16^th Edition):

Bleichner, Noah G. “A Comparative Study on Seismic Analysis Methods and the Response of Systems with Classical and Nonclassical Damping.” 2020. Masters Thesis, Cal Poly. Accessed March 03, 2021. https://digitalcommons.calpoly.edu/theses/2231.

MLA Handbook (7^th Edition):

Bleichner, Noah G. “A Comparative Study on Seismic Analysis Methods and the Response of Systems with Classical and Nonclassical Damping.” 2020. Web. 03 Mar 2021.

Vancouver:

Bleichner NG. A Comparative Study on Seismic Analysis Methods and the Response of Systems with Classical and Nonclassical Damping. [Internet] [Masters thesis]. Cal Poly; 2020. [cited 2021 Mar 03]. Available from: https://digitalcommons.calpoly.edu/theses/2231.

Council of Science Editors:

Bleichner NG. A Comparative Study on Seismic Analysis Methods and the Response of Systems with Classical and Nonclassical Damping. [Masters Thesis]. Cal Poly; 2020. Available from: https://digitalcommons.calpoly.edu/theses/2231

Ryerson University

16. Akram, Muhammad. Behaviour of composite framed shear wall system:.

Degree: 2014, Ryerson University

URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A2608

► This research investigated the behaviour of a novel form of composite framed shear wall system (CFSWS) under lateral loading. The CFSWS consisted of a composite… (more)

Subjects/Keywords: Composite construction; Composite construction – -; Structural analysis (Engineering); Structural analysis (Engineering) – -; Structural engineering; Structural engineering – -

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APA (6^th Edition):

Akram, M. (2014). Behaviour of composite framed shear wall system:. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A2608

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

Chicago Manual of Style (16^th Edition):

Akram, Muhammad. “Behaviour of composite framed shear wall system:.” 2014. Thesis, Ryerson University. Accessed March 03, 2021. https://digital.library.ryerson.ca/islandora/object/RULA%3A2608.

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

MLA Handbook (7^th Edition):

Akram, Muhammad. “Behaviour of composite framed shear wall system:.” 2014. Web. 03 Mar 2021.

Vancouver:

Akram M. Behaviour of composite framed shear wall system:. [Internet] [Thesis]. Ryerson University; 2014. [cited 2021 Mar 03]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A2608.

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

Council of Science Editors:

Akram M. Behaviour of composite framed shear wall system:. [Thesis]. Ryerson University; 2014. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A2608

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

San Jose State University

17. Carlsen, Rhett Kenneth. The Design and Detailing of Discontinuous Timberframe Lateral-Force-Resisting Systems.

Degree: MS, Civil and Environmental Engineering, 2018, San Jose State University

URL: https://doi.org/10.31979/etd.tc68-85sz ; https://scholarworks.sjsu.edu/etd_theses/4894

► Discontinuous lateral-force-resisting systems (LFRS) are a type of LFRS in which the path of resistance does not continue directly to the foundation. Discontinuous systems… (more)

Subjects/Keywords: Seismic; Structural Engineering

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APA (6^th Edition):

Carlsen, R. K. (2018). The Design and Detailing of Discontinuous Timberframe Lateral-Force-Resisting Systems. (Masters Thesis). San Jose State University. Retrieved from https://doi.org/10.31979/etd.tc68-85sz ; https://scholarworks.sjsu.edu/etd_theses/4894

Chicago Manual of Style (16^th Edition):

Carlsen, Rhett Kenneth. “The Design and Detailing of Discontinuous Timberframe Lateral-Force-Resisting Systems.” 2018. Masters Thesis, San Jose State University. Accessed March 03, 2021. https://doi.org/10.31979/etd.tc68-85sz ; https://scholarworks.sjsu.edu/etd_theses/4894.

MLA Handbook (7^th Edition):

Carlsen, Rhett Kenneth. “The Design and Detailing of Discontinuous Timberframe Lateral-Force-Resisting Systems.” 2018. Web. 03 Mar 2021.

Vancouver:

Carlsen RK. The Design and Detailing of Discontinuous Timberframe Lateral-Force-Resisting Systems. [Internet] [Masters thesis]. San Jose State University; 2018. [cited 2021 Mar 03]. Available from: https://doi.org/10.31979/etd.tc68-85sz ; https://scholarworks.sjsu.edu/etd_theses/4894.

Council of Science Editors:

Carlsen RK. The Design and Detailing of Discontinuous Timberframe Lateral-Force-Resisting Systems. [Masters Thesis]. San Jose State University; 2018. Available from: https://doi.org/10.31979/etd.tc68-85sz ; https://scholarworks.sjsu.edu/etd_theses/4894

Queens University

18. Zakaib, Sarah. Flexural Performance and Moment Connections of Concrete-Filled GFRP Tubes (CFFTs) and CFFT-encased Steel I-Sections .

Degree: Civil Engineering, 2013, Queens University

URL: http://hdl.handle.net/1974/7849

► The first part of this thesis addresses a new hybrid system, concrete-filled FRP tube (CFFT)-encased steel I-sections. The embedded steel section enhances flexural strength, stiffness… (more)

▼ The first part of this thesis addresses a new hybrid system, concrete-filled FRP tube (CFFT)-encased steel I-sections. The embedded steel section enhances flexural strength, stiffness and ductility, and facilitates connection of the CFFT member to footings or other members. Phase I addresses the flexural behaviour of the system through the testing of beam specimens with GFRP tubes which vary in thickness and laminate structure. The steel section enhances performance considerably, especially ductility, in tubes with cross-ply laminates, where significant sustained reserve strength remains upon fracture of the tube. CFFTs with angle-ply tubes show considerable inherent ductility on their own, although adding the steel section enhances strength and stiffness. Phase II addresses the development of a moment connection through cantilever tests. The connection consists of steel base plates welded to the steel sections, which are embedded into CFFT members at various length-to-span (Ls/L) ratios between 0.1 and 1.0. Three distinct failure modes are observed. At (Ls/L) ratios below 0.17, premature bond failure occurs. At ratios of 0.17 to 0.47, flexural tension failure of the tube occurs just beyond the free end of the steel section. Beyond a 0.47 ratio, the plastic hinge capacity is developed at the fixed end. A simple design-oriented model to predict strengths of the connection at the full range of (Ls/L) ratios is developed and validated. Also, a readily available computer program is adopted to model flexural behaviour of the CFFT-steel member itself. The second part of the thesis investigates unreinforced CFFT members, with emphasis on moment connections to concrete footings. The study explores the effect of maximum shear and maximum moment, both occurring at the same location, on the ultimate strength of CFFTs. Testing involves simple beams and cantilever specimens with varying shear spans and fixed end arrangements. End conditions consist of either direct embedment into concrete blocks with steel dowels, or mechanical clamping. For the cross-ply GFRP tubes used, the presence of shear at the location of maximum moment near the connection of the cantilevers does not reduce flexural capacity. Slip can prevent the CFFT member from attaining the potential moment capacity in spite of the tube failing due to tensile rupture.

Subjects/Keywords: CFFTs ; structural engineering

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APA (6^th Edition):

Zakaib, S. (2013). Flexural Performance and Moment Connections of Concrete-Filled GFRP Tubes (CFFTs) and CFFT-encased Steel I-Sections . (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/7849

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

Chicago Manual of Style (16^th Edition):

Zakaib, Sarah. “Flexural Performance and Moment Connections of Concrete-Filled GFRP Tubes (CFFTs) and CFFT-encased Steel I-Sections .” 2013. Thesis, Queens University. Accessed March 03, 2021. http://hdl.handle.net/1974/7849.

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

MLA Handbook (7^th Edition):

Zakaib, Sarah. “Flexural Performance and Moment Connections of Concrete-Filled GFRP Tubes (CFFTs) and CFFT-encased Steel I-Sections .” 2013. Web. 03 Mar 2021.

Vancouver:

Zakaib S. Flexural Performance and Moment Connections of Concrete-Filled GFRP Tubes (CFFTs) and CFFT-encased Steel I-Sections . [Internet] [Thesis]. Queens University; 2013. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/1974/7849.

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

Council of Science Editors:

Zakaib S. Flexural Performance and Moment Connections of Concrete-Filled GFRP Tubes (CFFTs) and CFFT-encased Steel I-Sections . [Thesis]. Queens University; 2013. Available from: http://hdl.handle.net/1974/7849

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

Stellenbosch University

19. De Koker, Nico. Reliability-Based Design in Geostructural Engineering.

Degree: PhD, 2018, Stellenbosch University

URL: http://hdl.handle.net/10019.1/104862

►

ENGLISH ABSTRACT: Current standards used in South African geotechnical design practice follow the partial factor limit states design approach. Although partial factors used in this… (more)

▼

ENGLISH ABSTRACT: Current standards used in South African geotechnical design practice follow the partial factor limit states design approach. Although partial factors used in this approach are calibrated for standardised target reliability levels, the approach does not take direct account of the probability of failure. Probabilistic reliability analysis provides additional insight to practitioners, making for potentially more optimal geotechnical structures. The technical committee responsible for drafting the South African geotechnical design standard has been requested by representatives of the geotechnical community to consider including standardised guidelines to reliability based geostructural design. As background research towards compiling the pre-normative report for such a set of guidelines, the use of reliability analysis in geostructural design needs to be considered in the context of the following problems. Firstly, the reliability analysis techniques appropriate to different geostructural design problems – a design standard can only be successful if the analysis methods are sufficiently accurate, robust, and practical to apply. Secondly, the appropriate statistical descriptions of the various model parameters – reliability analysis of civil structures is extrapolatory by nature, and so is very sensitive to the choice of functional form (distribution) and the values used to constrain its parameters. Thirdly, the minimum requirements on sample quality – sophisticated reliability analysis techniques have little value if parameter values are based on biased samples that are not representative of the material upon which the structure is to be founded. This thesis presents a number of studies associated with the issues listed above, from which it is concluded that geostructural design to a target reliability is possible, provided that the resistance model and the statistics describing its parameters are accurate and unbiased. However, it is shown that for this to be achieved, samples consisting of a greater number of specimens than currently used in routine geotechnical practice would be required, while the distribution types used to represent the various geotechnical material parameters should be standardised. Of the range of reliability analysis techniques available, the variants of the first order reliability method (FORM), in combination with an analytical surrogate performance function (response surface) where required, are shown to provide the best balance of transparency, economy, and accuracy.

AFRIKAANS OPSOMMING: Geostrukturele ontwerpstandaarde wat tans in die Suid Afrikaanse praktyk gebruik word, volg die parsiële faktor limietstaatontwerp benadering. Hoewel die faktore in dié benadering teen gestandaardiseerde teikenbetroubaarheidsvlakke gekalibreer is, word die faalwaarskynlikheid nie direk in ag geneem nie. Betroubaarheidsanalise en -ontwerp met ’n direkte waarskynlikheidsgrondslag bied die praktisyn dieper stogastiese insig, wat potensieel meer optimale…

Advisors/Committee Members: Viljoen, C., Day, P. W., Stellenbosch University. Faculty of Engineering. Faculty of Civil Engineering..

Subjects/Keywords: Geotechnical Engineering; UCTD; Structural design – Reliability (Engineering); Structural design; Structural Engineering

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

APA (6^th Edition):

De Koker, N. (2018). Reliability-Based Design in Geostructural Engineering. (Doctoral Dissertation). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/104862

Chicago Manual of Style (16^th Edition):

De Koker, Nico. “Reliability-Based Design in Geostructural Engineering.” 2018. Doctoral Dissertation, Stellenbosch University. Accessed March 03, 2021. http://hdl.handle.net/10019.1/104862.

MLA Handbook (7^th Edition):

De Koker, Nico. “Reliability-Based Design in Geostructural Engineering.” 2018. Web. 03 Mar 2021.

Vancouver:

De Koker N. Reliability-Based Design in Geostructural Engineering. [Internet] [Doctoral dissertation]. Stellenbosch University; 2018. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/10019.1/104862.

Council of Science Editors:

De Koker N. Reliability-Based Design in Geostructural Engineering. [Doctoral Dissertation]. Stellenbosch University; 2018. Available from: http://hdl.handle.net/10019.1/104862

Stellenbosch University

20. Immelman, Derick Wade. The influence of percentage replacement on the aggregate and concrete properties from commercially produced coarse recycled concrete aggregate.

Degree: MScEng, Civil Engineering, 2013, Stellenbosch University

URL: http://hdl.handle.net/10019.1/80388

►

ENGLISH ABSTRACT: The aim of this research is to investigate the potential use of coarse recycled concrete aggregate (RCA) as a material in structural concrete.… (more)

▼

ENGLISH ABSTRACT: The aim of this research is to investigate the potential use of coarse recycled concrete aggregate (RCA) as a material in structural concrete. The lack of knowledge and specifications in South Africa are the main reasons for this research of RCA. By increasing the database of research of RCA in South Africa the possibility of specifications for this alternative building material can be initiated. The implications of such specifications would lead to RCA acceptance in concrete design and therefore reducing the amount of construction and demolition (C&D) waste accumulating at landfill sites and decreasing the extraction of depleting natural aggregates. The objectives that are achieved through this research project are firstly, what is the percentage replacement of RCA to a concrete blend that will produce a material that achieves similar or better results than a concrete blend containing natural aggregates. Secondly, what aggregate properties and limits should be defined in the specification of RCA for it to be accepted as a material in concrete mixtures. The objectives were assessed through examining the geometrical, physical and chemical properties of the aggregate as a material and the fresh and hardened concrete properties of concrete which contains RCA as a constituent. RCA which was processed by a commercial recycling facility which produces concrete masonry units was collected at three different instances. This material was reprocessed in the laboratory to control the grading and amount of fine material not guaranteed by the recycling process. The RCA is then combined with natural aggregate (NA) at the replacement percentages: 0, 15, 30, 50 and 100% which is then used to examine the aggregate properties. It was determined that the physical properties of RCA were dependent on the geometrical properties, while taking into consideration that the geometrical properties are dependent on the source and method of recycling of the original C&D waste. The chemical properties were established as dependent on the physical properties of the RCA. The RCA is then mixed with NA at the same replacement percentages together with other concrete constituents to produce the concrete used to examine fresh and hardened concrete properties. The fresh concrete properties investigated were: slump, slump loss, air content and fresh compacted density. The hardened concrete properties studied were: compressive strength, tensile splitting strength, oxygen permeability, water sorptivity, chloride conductivity, modulus of elasticity, shrinkage and creep. The concrete properties were not significantly influenced by the inclusion of RCA. According to the aggregate and concrete properties examined in this investigation, the full replacement of NA in structural concrete is possible and will improve the sustainable development of the construction industry.

AFRIKAANSE OPSOMMING: Die doel van hierdie navorsing is om ondersoek in te stel na die potensiele gebruik van growwe herwonne betonaggregaat…

Advisors/Committee Members: De Villiers, W. I., Boshoff, B., Stellenbosch University. Faculty of Engineering. Dept. of Civil Engineering..

Subjects/Keywords: Civil engineering; Structural engineering

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APA (6^th Edition):

Immelman, D. W. (2013). The influence of percentage replacement on the aggregate and concrete properties from commercially produced coarse recycled concrete aggregate. (Masters Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/80388

Chicago Manual of Style (16^th Edition):

Immelman, Derick Wade. “The influence of percentage replacement on the aggregate and concrete properties from commercially produced coarse recycled concrete aggregate.” 2013. Masters Thesis, Stellenbosch University. Accessed March 03, 2021. http://hdl.handle.net/10019.1/80388.

MLA Handbook (7^th Edition):

Immelman, Derick Wade. “The influence of percentage replacement on the aggregate and concrete properties from commercially produced coarse recycled concrete aggregate.” 2013. Web. 03 Mar 2021.

Vancouver:

Immelman DW. The influence of percentage replacement on the aggregate and concrete properties from commercially produced coarse recycled concrete aggregate. [Internet] [Masters thesis]. Stellenbosch University; 2013. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/10019.1/80388.

Council of Science Editors:

Immelman DW. The influence of percentage replacement on the aggregate and concrete properties from commercially produced coarse recycled concrete aggregate. [Masters Thesis]. Stellenbosch University; 2013. Available from: http://hdl.handle.net/10019.1/80388

University of Toronto

21. Kabanda, John Samuel. Evaluation of the Frequency and Time Domain Soil-structure Interaction Analysis Methods against the Hualien Large-scale Seismic Test (LSST) Data.

Degree: 2013, University of Toronto

URL: http://hdl.handle.net/1807/42977

►

Nonlinear seismic soil-structure interaction (SSI) analyses are often completed using the equivalent linear frequency domain analysis method as it is simple to use and computationally… (more)

Subjects/Keywords: Structural Engineering; Geotechnical Engineering; 0543

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APA (6^th Edition):

Kabanda, J. S. (2013). Evaluation of the Frequency and Time Domain Soil-structure Interaction Analysis Methods against the Hualien Large-scale Seismic Test (LSST) Data. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/42977

Chicago Manual of Style (16^th Edition):

Kabanda, John Samuel. “Evaluation of the Frequency and Time Domain Soil-structure Interaction Analysis Methods against the Hualien Large-scale Seismic Test (LSST) Data.” 2013. Masters Thesis, University of Toronto. Accessed March 03, 2021. http://hdl.handle.net/1807/42977.

MLA Handbook (7^th Edition):

Kabanda, John Samuel. “Evaluation of the Frequency and Time Domain Soil-structure Interaction Analysis Methods against the Hualien Large-scale Seismic Test (LSST) Data.” 2013. Web. 03 Mar 2021.

Vancouver:

Kabanda JS. Evaluation of the Frequency and Time Domain Soil-structure Interaction Analysis Methods against the Hualien Large-scale Seismic Test (LSST) Data. [Internet] [Masters thesis]. University of Toronto; 2013. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/1807/42977.

Council of Science Editors:

Kabanda JS. Evaluation of the Frequency and Time Domain Soil-structure Interaction Analysis Methods against the Hualien Large-scale Seismic Test (LSST) Data. [Masters Thesis]. University of Toronto; 2013. Available from: http://hdl.handle.net/1807/42977

University of Sheffield

22. Jemaa, Yaser. Seismic behaviour of deficient exterior RC beam-column joints.

Degree: PhD, 2013, University of Sheffield

URL: http://etheses.whiterose.ac.uk/15025/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.632737

► Post-earthquake reconnaissance and results of previously conducted experiments show that stiffness and strength deterioration of beam-column joints can have a detrimental effect on the integrity… (more)

▼ Post-earthquake reconnaissance and results of previously conducted experiments show that stiffness and strength deterioration of beam-column joints can have a detrimental effect on the integrity and vulnerability of reinforced concrete frame structures, especially in older buildings in developing countries. As a result, there is a need to develop efficient structural evaluation techniques that are capable of accurately estimating the strength and deformability of existing buildings to facilitate the development of safer, simpler, and lower cost retrofit solutions and thus contributing to risk mitigation. The current research is part of a general effort that is being carried out at the University of Sheffield to quantify and develop strategies for the mitigation of seismic risk in developing countries. The primary aim of this work is to improve the current understanding of the seismic behaviour of deficient exterior reinforce concrete beam-column joints. Seven full-scale isolated exterior beam-column joints were tested under quasi-static cyclic loading to investigate and quantify the effects of using different types of beam reinforcement anchorages and low column axial loads on the seismic shear performance of exterior beam-column joints with no shear reinforcement. Contrary to what is reported in the literature, the test results show that increasing the column axial load even at very low levels «O.2f'oAg,) can enhance the joint shear strength of deficient exterior joints (exhibiting pure shear failure) by up to 15%. The test results also show that, for the same joint panel geometry and column axial load, the type of beam anchorage detail, whether it is a straight bar, long or short hook, can influence the joint shear strength by up to 34%. A new analytical model that predicts the shear strength of deficient exterior beam-column joints in both loading directions and takes into account the column axial load and bond conditions within the joint is developed. The model predicts with good accuracy the strength of the tested specimens in addition to other specimens reported by other researchers. Furthermore, a springbased exterior beam-column joint model for finite element analysis of deficient RC frames is proposed. The model development includes a joint shear stress-strain constitutive model based on the developed strength model. The simulated response using the proposed model shows good agreement with the experimentally observed response.

Subjects/Keywords: 621.8; Structural engineering, civil engineering

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APA (6^th Edition):

Jemaa, Y. (2013). Seismic behaviour of deficient exterior RC beam-column joints. (Doctoral Dissertation). University of Sheffield. Retrieved from http://etheses.whiterose.ac.uk/15025/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.632737

Chicago Manual of Style (16^th Edition):

Jemaa, Yaser. “Seismic behaviour of deficient exterior RC beam-column joints.” 2013. Doctoral Dissertation, University of Sheffield. Accessed March 03, 2021. http://etheses.whiterose.ac.uk/15025/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.632737.

MLA Handbook (7^th Edition):

Jemaa, Yaser. “Seismic behaviour of deficient exterior RC beam-column joints.” 2013. Web. 03 Mar 2021.

Vancouver:

Jemaa Y. Seismic behaviour of deficient exterior RC beam-column joints. [Internet] [Doctoral dissertation]. University of Sheffield; 2013. [cited 2021 Mar 03]. Available from: http://etheses.whiterose.ac.uk/15025/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.632737.

Council of Science Editors:

Jemaa Y. Seismic behaviour of deficient exterior RC beam-column joints. [Doctoral Dissertation]. University of Sheffield; 2013. Available from: http://etheses.whiterose.ac.uk/15025/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.632737

23. Landgraf, Daniel. Developing the design of road going welded structures with special considerations for hot-dip galvanizing.

Degree: 2019, University of Tennessee – Chattanooga

URL: https://scholar.utc.edu/theses/627

► The primary objective of this thesis is to provide accessible methods for numerical analysis of the mechanical behavior of welded structures specific to roadgoing trailers… (more)

Subjects/Keywords: Engineering design; Structural engineering – Congresses

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APA (6^th Edition):

Landgraf, D. (2019). Developing the design of road going welded structures with special considerations for hot-dip galvanizing. (Masters Thesis). University of Tennessee – Chattanooga. Retrieved from https://scholar.utc.edu/theses/627

Chicago Manual of Style (16^th Edition):

Landgraf, Daniel. “Developing the design of road going welded structures with special considerations for hot-dip galvanizing.” 2019. Masters Thesis, University of Tennessee – Chattanooga. Accessed March 03, 2021. https://scholar.utc.edu/theses/627.

MLA Handbook (7^th Edition):

Landgraf, Daniel. “Developing the design of road going welded structures with special considerations for hot-dip galvanizing.” 2019. Web. 03 Mar 2021.

Vancouver:

Landgraf D. Developing the design of road going welded structures with special considerations for hot-dip galvanizing. [Internet] [Masters thesis]. University of Tennessee – Chattanooga; 2019. [cited 2021 Mar 03]. Available from: https://scholar.utc.edu/theses/627.

Council of Science Editors:

Landgraf D. Developing the design of road going welded structures with special considerations for hot-dip galvanizing. [Masters Thesis]. University of Tennessee – Chattanooga; 2019. Available from: https://scholar.utc.edu/theses/627

University of Central Florida

24. Karaaslan, Enes. Enhanced Concrete Bridge Assessment Using Artificial Intelligence and Mixed Reality.

Degree: 2019, University of Central Florida

URL: https://stars.library.ucf.edu/etd/6876

► Conventional methods for visual assessment of civil infrastructures have certain limitations, such as subjectivity of the collected data, long inspection time, and high cost of… (more)

Subjects/Keywords: Civil Engineering; Structural Engineering

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APA (6^th Edition):

Karaaslan, E. (2019). Enhanced Concrete Bridge Assessment Using Artificial Intelligence and Mixed Reality. (Doctoral Dissertation). University of Central Florida. Retrieved from https://stars.library.ucf.edu/etd/6876

Chicago Manual of Style (16^th Edition):

Karaaslan, Enes. “Enhanced Concrete Bridge Assessment Using Artificial Intelligence and Mixed Reality.” 2019. Doctoral Dissertation, University of Central Florida. Accessed March 03, 2021. https://stars.library.ucf.edu/etd/6876.

MLA Handbook (7^th Edition):

Karaaslan, Enes. “Enhanced Concrete Bridge Assessment Using Artificial Intelligence and Mixed Reality.” 2019. Web. 03 Mar 2021.

Vancouver:

Karaaslan E. Enhanced Concrete Bridge Assessment Using Artificial Intelligence and Mixed Reality. [Internet] [Doctoral dissertation]. University of Central Florida; 2019. [cited 2021 Mar 03]. Available from: https://stars.library.ucf.edu/etd/6876.

Council of Science Editors:

Karaaslan E. Enhanced Concrete Bridge Assessment Using Artificial Intelligence and Mixed Reality. [Doctoral Dissertation]. University of Central Florida; 2019. Available from: https://stars.library.ucf.edu/etd/6876

Michigan Technological University

25. VanSlembrouck, Daniel J. COMPRESSION BEHAVIOR AT HIGH STRAIN RATE FOR AN ULTRA HIGH PERFORMANCE CONCRETE.

Degree: MS, Department of Civil and Environmental Engineering, 2015, Michigan Technological University

URL: https://digitalcommons.mtu.edu/etd-restricted/253

► The need for a stronger and more durable building material is becoming more important as the structural engineering field expands and challenges the behavioral… (more)

▼ The need for a stronger and more durable building material is becoming more important as the structural engineering field expands and challenges the behavioral limits of current materials. One of the demands for stronger material is rooted in the effects that dynamic loading has on a structure. High strain rates on the order of 10¹ s^-1 to 10³ s^-1, though a small part of the overall types of loading that occur anywhere between 10^-8 s^-1 to 10⁴s^-1 and at any point in a structures life, have very important effects when considering dynamic loading on a structure. High strain rates such as these can cause the material and structure to behave differently than at slower strain rates, which necessitates the need for the testing of materials under such loading to understand its behavior. Ultra high performance concrete (UHPC), a relatively new material in the U.S. construction industry, exhibits many enhanced strength and durability properties compared to the standard normal strength concrete. However, the use of this material for high strain rate applications requires an understanding of UHPC’s dynamic properties under corresponding loads. One such dynamic property is the increase in compressive strength under high strain rate load conditions, quantified as the dynamic increase factor (DIF). This factor allows a designer to relate the dynamic compressive strength back to the static compressive strength, which generally is a well-established property. Previous research establishes the relationships for the concept of DIF in design. The generally accepted methodology for obtaining high strain rates to study the enhanced behavior of compressive material strength is the split Hopkinson pressure bar (SHPB). In this research, 83 Cor-Tuf UHPC specimens were tested in dynamic compression using a SHPB at Michigan Technological University. The specimens were separated into two categories: ambient cured and thermally treated, with aspect ratios of 0.5:1, 1:1, and 2:1 within each category. There was statistically no significant difference in mean DIF for the aspect ratios and cure regimes that were considered in this study. DIF’s ranged from 1.85 to 2.09. Failure modes were observed to be mostly Type 2, Type 4, or combinations thereof for all specimen aspect ratios when classified according to ASTM C39 fracture pattern guidelines. The Comite Euro-International du Beton (CEB) model for DIF versus strain rate does not accurately predict the DIF for UHPC data gathered in this study. Additionally, a measurement system analysis was conducted to observe variance within the measurement system and a general linear model analysis was performed to examine the interaction and main effects that aspect ratio, cannon pressure, and cure method have on the maximum dynamic stress. Advisors/Committee Members: Theresa M. Ahlborn.

Subjects/Keywords: Civil Engineering; Structural Engineering

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APA (6^th Edition):

VanSlembrouck, D. J. (2015). COMPRESSION BEHAVIOR AT HIGH STRAIN RATE FOR AN ULTRA HIGH PERFORMANCE CONCRETE. (Masters Thesis). Michigan Technological University. Retrieved from https://digitalcommons.mtu.edu/etd-restricted/253

Chicago Manual of Style (16^th Edition):

VanSlembrouck, Daniel J. “COMPRESSION BEHAVIOR AT HIGH STRAIN RATE FOR AN ULTRA HIGH PERFORMANCE CONCRETE.” 2015. Masters Thesis, Michigan Technological University. Accessed March 03, 2021. https://digitalcommons.mtu.edu/etd-restricted/253.

MLA Handbook (7^th Edition):

VanSlembrouck, Daniel J. “COMPRESSION BEHAVIOR AT HIGH STRAIN RATE FOR AN ULTRA HIGH PERFORMANCE CONCRETE.” 2015. Web. 03 Mar 2021.

Vancouver:

VanSlembrouck DJ. COMPRESSION BEHAVIOR AT HIGH STRAIN RATE FOR AN ULTRA HIGH PERFORMANCE CONCRETE. [Internet] [Masters thesis]. Michigan Technological University; 2015. [cited 2021 Mar 03]. Available from: https://digitalcommons.mtu.edu/etd-restricted/253.

Council of Science Editors:

VanSlembrouck DJ. COMPRESSION BEHAVIOR AT HIGH STRAIN RATE FOR AN ULTRA HIGH PERFORMANCE CONCRETE. [Masters Thesis]. Michigan Technological University; 2015. Available from: https://digitalcommons.mtu.edu/etd-restricted/253

26. Wyatt, Kyle David. CREATING A SMARTPHONE APPLICATION FOR MEASURING RESPONSES OF AN EXPERIMENTAL STRUCTURE AT MULTIPLE LOCATIONS AND FOR K-12 STEM OUTREACH RELATED TO STRUCTURAL ENGINEERING.

Degree: MS, 2015, University of New Hampshire

URL: https://scholars.unh.edu/thesis/1054

► Structural health monitoring (SHM) systems are used to measure and analyze structure data (e.g., floor accelerations and strains in structural members) to identify damage… (more)

▼ Structural health monitoring (SHM) systems are used to measure and analyze structure data (e.g., floor accelerations and strains in structural members) to identify damage (or structural changes) to a structure. With aging infrastructures and collapses of recent structures such as the 2007 I-35W Mississippi River Bridge and the 2013 clothing factory in Bangladesh, SHM can help address an important societal issue in structural safety and reliability. In the current practice, SHM systems include dedicated sensors linked (via wires or wirelessly) to data acquisition systems. These sensing systems are typically costly and impractical for many educational curriculums. A lack of exposures to college students limits applications and understanding of SHM in the practicing engineering industry. By replacing these dedicated sensing systems with a common technology such as smartphones, this thesis project aims to make SHM experiments inexpensive and practical to college students. Additionally, the project can assist in exposing K-12 students to SHM and the general field of structural engineering at a young age and increasing their interest in becoming engineers. This multidisciplinary research included developing a smartphone application using the JavaTM programming language on the Android platform. The application utilizes the phone’s user interface, internal accelerometer, internal storage, and Bluetooth to create a user friendly experience. One portion of the application is used for SHM purposes. It assists users in time-synchronizing multiple phones, recording acceleration data and detecting changes in structural properties. When compared to a dedicated sensing system used in a lab setting, data from the smartphones produced similar results. Another portion of the application, incorporated into an educational outreach program at a local middle school, was designed to help students understand the basic concepts of structural dynamics — more specifically, how stiffness and damping affect a structure’s motions. This interactive smartphone application, coupled with its ability to be a cost-effective system for measuring structural responses in classroom experiments, can get students excited about engineering. Advisors/Committee Members: Tat Fu, Nicholas Kirsch, Ricardo Medina.

Subjects/Keywords: Civil Engineering; Smartphone; Structural Engineering

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APA (6^th Edition):

Wyatt, K. D. (2015). CREATING A SMARTPHONE APPLICATION FOR MEASURING RESPONSES OF AN EXPERIMENTAL STRUCTURE AT MULTIPLE LOCATIONS AND FOR K-12 STEM OUTREACH RELATED TO STRUCTURAL ENGINEERING. (Thesis). University of New Hampshire. Retrieved from https://scholars.unh.edu/thesis/1054

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

Chicago Manual of Style (16^th Edition):

Wyatt, Kyle David. “CREATING A SMARTPHONE APPLICATION FOR MEASURING RESPONSES OF AN EXPERIMENTAL STRUCTURE AT MULTIPLE LOCATIONS AND FOR K-12 STEM OUTREACH RELATED TO STRUCTURAL ENGINEERING.” 2015. Thesis, University of New Hampshire. Accessed March 03, 2021. https://scholars.unh.edu/thesis/1054.

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

MLA Handbook (7^th Edition):

Wyatt, Kyle David. “CREATING A SMARTPHONE APPLICATION FOR MEASURING RESPONSES OF AN EXPERIMENTAL STRUCTURE AT MULTIPLE LOCATIONS AND FOR K-12 STEM OUTREACH RELATED TO STRUCTURAL ENGINEERING.” 2015. Web. 03 Mar 2021.

Vancouver:

Wyatt KD. CREATING A SMARTPHONE APPLICATION FOR MEASURING RESPONSES OF AN EXPERIMENTAL STRUCTURE AT MULTIPLE LOCATIONS AND FOR K-12 STEM OUTREACH RELATED TO STRUCTURAL ENGINEERING. [Internet] [Thesis]. University of New Hampshire; 2015. [cited 2021 Mar 03]. Available from: https://scholars.unh.edu/thesis/1054.

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

Council of Science Editors:

Wyatt KD. CREATING A SMARTPHONE APPLICATION FOR MEASURING RESPONSES OF AN EXPERIMENTAL STRUCTURE AT MULTIPLE LOCATIONS AND FOR K-12 STEM OUTREACH RELATED TO STRUCTURAL ENGINEERING. [Thesis]. University of New Hampshire; 2015. Available from: https://scholars.unh.edu/thesis/1054

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

Ryerson University

27. Pinto, Ivan L. Life Cycle Assessment Overview And Application: Comparison Of Structural Frame Alternatives For Office Buildings.

Degree: 2013, Ryerson University

URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A2401

► The objective of this project was to provide an overview of Life Cycle Assessment (LCA) and to demonstrate its application as a tool to provide… (more)

Subjects/Keywords: Structural engineering; Structural analysis (Engineering); Steel; Structural; Concrete construction

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APA (6^th Edition):

Pinto, I. L. (2013). Life Cycle Assessment Overview And Application: Comparison Of Structural Frame Alternatives For Office Buildings. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A2401

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

Chicago Manual of Style (16^th Edition):

Pinto, Ivan L. “Life Cycle Assessment Overview And Application: Comparison Of Structural Frame Alternatives For Office Buildings.” 2013. Thesis, Ryerson University. Accessed March 03, 2021. https://digital.library.ryerson.ca/islandora/object/RULA%3A2401.

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

MLA Handbook (7^th Edition):

Pinto, Ivan L. “Life Cycle Assessment Overview And Application: Comparison Of Structural Frame Alternatives For Office Buildings.” 2013. Web. 03 Mar 2021.

Vancouver:

Pinto IL. Life Cycle Assessment Overview And Application: Comparison Of Structural Frame Alternatives For Office Buildings. [Internet] [Thesis]. Ryerson University; 2013. [cited 2021 Mar 03]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A2401.

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

Council of Science Editors:

Pinto IL. Life Cycle Assessment Overview And Application: Comparison Of Structural Frame Alternatives For Office Buildings. [Thesis]. Ryerson University; 2013. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A2401

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

Nelson Mandela Metropolitan University

28. Victor, Ngea Njoume. Characterising the structural integrity of mechanical formed low carbon steel.

Degree: Faculty of Engineering, the Built Environment and Information Technology, 2012, Nelson Mandela Metropolitan University

URL: http://hdl.handle.net/10948/d1012089

► The contribution of the clamping force in the technique used in this study to stretch-bend low carbon steel samples was investigated to support the subsequent… (more)

▼ The contribution of the clamping force in the technique used in this study to stretch-bend low carbon steel samples was investigated to support the subsequent changes in the microstructure and properties of the formed material with regard to parent material. Although plastic deformation by cold working is known to induce texture or preferred orientation to the grains of a formed material while decreasing its ductility and increasing the strength, as well as inducing residual stress, it is not known how the different directions (rolling, transverse and oblique/45°) of the sheet steel will respond to this stretch bending technique. The first part of the research work involved a thorough literature review on sheet metal forming processes and their effect on the formed material with interest on the above mentioned directions of the sheet. It became clear from the literature overview that cold working of a material will induce strain-hardening which varies with the magnitude of cold work, resulting in changes in the strength and ductility of the material. Besides, when plastic deformation is not uniform (e.g., tensile and compressive) throughout the entire cross section of the formed part, residual stresses remain in the material with the grains been elongated along the direction of the maximum strain. The main parameters that were considered and controlled in this study are as follows: strain experienced / stress induced into the form sample, the sample direction, the stroke length and the clamping torque, the generated radius of curvature. The chapters that follow the literature review, deal with the set-up of the different equipment used in this study, the specimen preparation as well as the recording, the calculation and interpretation of the results. It was found that the stress magnitude that generated the different radii of curvature (120 mm, 150 mm and 185 mm) was between 1 percent & 13 percent higher than the parent material’s yield strength with the lower stress been associated to the smaller radius of curvature and the higher stress to the higher radius. The stress induced into the sample during forming was not only proportional to the stroke length but also to the distance between the punch’s tip and the sample and the sample to the die’s nadir. The clamping torque adopted was restricted to the manual capacity of the operator who used a preset torque wrench to fasten the plate sample into the jig. Plate samples of low carbon steel were cut to angles of 0°, 45°, and 90° to the rolling direction of the sheet material and stretch-bent on a single-action mechanical press to 120 mm, 150 mm, and 185 mm radii of curvature. The preliminary results indicate that stretch-bent samples had increased hardness to the parent plate, in particular below the surface layers up to around 1.1 mm depth. Since there is a well established relationship between hardness, yield and tensile strengths for steel, the yield and tensile strengths of the formed material were estimated using the Nobre et al [34] incremental relation, which…

Subjects/Keywords: Carbon steel; Structural analysis (Engineering); Steel, Structural

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APA (6^th Edition):

Victor, N. N. (2012). Characterising the structural integrity of mechanical formed low carbon steel. (Thesis). Nelson Mandela Metropolitan University. Retrieved from http://hdl.handle.net/10948/d1012089

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

Chicago Manual of Style (16^th Edition):

Victor, Ngea Njoume. “Characterising the structural integrity of mechanical formed low carbon steel.” 2012. Thesis, Nelson Mandela Metropolitan University. Accessed March 03, 2021. http://hdl.handle.net/10948/d1012089.

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

MLA Handbook (7^th Edition):

Victor, Ngea Njoume. “Characterising the structural integrity of mechanical formed low carbon steel.” 2012. Web. 03 Mar 2021.

Vancouver:

Victor NN. Characterising the structural integrity of mechanical formed low carbon steel. [Internet] [Thesis]. Nelson Mandela Metropolitan University; 2012. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/10948/d1012089.

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

Council of Science Editors:

Victor NN. Characterising the structural integrity of mechanical formed low carbon steel. [Thesis]. Nelson Mandela Metropolitan University; 2012. Available from: http://hdl.handle.net/10948/d1012089

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

Lehigh University

29. Whalen, Helen. Experimental Investigation of Smart Mobile Sensing for Fatigue Assessment with Deep Learning.

Degree: MS, Structural Engineering, 2020, Lehigh University

URL: https://preserve.lehigh.edu/etd/5804

Structural health monitoring (SHM) research is a critical tool for keeping up to date on the state of structures and understanding their behavior over time. One specific focus of SHM research is fatigue assessment, which involves estimating the remaining Advisors/Committee Members: Shamim N. Pakzad.

Subjects/Keywords: Fatigue Life; Structural Health Monitoring; Structural Engineering

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APA (6^th Edition):

Whalen, H. (2020). Experimental Investigation of Smart Mobile Sensing for Fatigue Assessment with Deep Learning. (Thesis). Lehigh University. Retrieved from https://preserve.lehigh.edu/etd/5804

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

Chicago Manual of Style (16^th Edition):

Whalen, Helen. “Experimental Investigation of Smart Mobile Sensing for Fatigue Assessment with Deep Learning.” 2020. Thesis, Lehigh University. Accessed March 03, 2021. https://preserve.lehigh.edu/etd/5804.

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

MLA Handbook (7^th Edition):

Whalen, Helen. “Experimental Investigation of Smart Mobile Sensing for Fatigue Assessment with Deep Learning.” 2020. Web. 03 Mar 2021.

Vancouver:

Whalen H. Experimental Investigation of Smart Mobile Sensing for Fatigue Assessment with Deep Learning. [Internet] [Thesis]. Lehigh University; 2020. [cited 2021 Mar 03]. Available from: https://preserve.lehigh.edu/etd/5804.

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

Council of Science Editors:

Whalen H. Experimental Investigation of Smart Mobile Sensing for Fatigue Assessment with Deep Learning. [Thesis]. Lehigh University; 2020. Available from: https://preserve.lehigh.edu/etd/5804

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

Columbia University

30. Kontoroupi, Thaleia. Probabilistic Identification and Prognosis of Nonlinear Dynamic Systems with applications in Structural Control and Health Monitoring.

Degree: 2016, Columbia University

URL: https://doi.org/10.7916/D8MK6CXD

► A Bayesian approach to system identification for structural control and health monitoring contains three main levels of inference, namely model assessment, joint state/parameter estimation and… (more)

▼ A Bayesian approach to system identification for structural control and health monitoring contains three main levels of inference, namely model assessment, joint state/parameter estimation and noise estimation. All of them have individually, or as a whole, been studied extensively for offline applications. In an online setting, the middle level of inference (joint state/parameter estimation) is performed using various algorithms such as the Kalman filter (KF), the extended Kalman filter (EKF), the Unscented Kalman filter (UKF), or particle filter (PF) methods. This problem has been explored in depth for structural dynamics. This dissertation focuses on the other two levels of inference, in particular on developing methods to perform them online, simultaneously to the joint state/parameter estimation. The quality of structural parameter estimates depends heavily on the choice of noise characteristics involved in the aforementioned online inference algorithms, hence the need for simultaneous online noise estimation. Model assessment, on the other hand, is an integral part of many engineering applications, since any analytical or numerical mathematical model used for predictive purposes is only an approximation of the real system. An online implementation of model assessment is valuable, amongst others, for structural control applications, and for identifying several models in parallel, some of which might be of deteriorating nature, thus generating some sort of alert. The performance of the proposed online techniques is evaluated using simulated and experimental data sets generated by nonlinear hysteretic systems. Upon completion of the study of hierarchical online system identification (diagnostic phase/estimation), a system/damage prognostic analysis (prognostic phase/prediction) is attempted using a gamma deterioration process. Prognostic analysis is still at a relatively early stage of development in the field of structural dynamics, but it can potentially provide useful insights regarding the lifetime of a dynamically excited structural system. The technique is evaluated on a data set recorded during an experiment involving a full-scale bridge pier under base excitation, tested to impending collapse.

Subjects/Keywords: Structural analysis (Engineering); Structural engineering; Nonlinear systems; Structural health monitoring; Engineering; Civil engineering; Mechanical engineering

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APA (6^th Edition):

Kontoroupi, T. (2016). Probabilistic Identification and Prognosis of Nonlinear Dynamic Systems with applications in Structural Control and Health Monitoring. (Doctoral Dissertation). Columbia University. Retrieved from https://doi.org/10.7916/D8MK6CXD

Chicago Manual of Style (16^th Edition):

Kontoroupi, Thaleia. “Probabilistic Identification and Prognosis of Nonlinear Dynamic Systems with applications in Structural Control and Health Monitoring.” 2016. Doctoral Dissertation, Columbia University. Accessed March 03, 2021. https://doi.org/10.7916/D8MK6CXD.

MLA Handbook (7^th Edition):

Kontoroupi, Thaleia. “Probabilistic Identification and Prognosis of Nonlinear Dynamic Systems with applications in Structural Control and Health Monitoring.” 2016. Web. 03 Mar 2021.

Vancouver:

Kontoroupi T. Probabilistic Identification and Prognosis of Nonlinear Dynamic Systems with applications in Structural Control and Health Monitoring. [Internet] [Doctoral dissertation]. Columbia University; 2016. [cited 2021 Mar 03]. Available from: https://doi.org/10.7916/D8MK6CXD.

Council of Science Editors:

Kontoroupi T. Probabilistic Identification and Prognosis of Nonlinear Dynamic Systems with applications in Structural Control and Health Monitoring. [Doctoral Dissertation]. Columbia University; 2016. Available from: https://doi.org/10.7916/D8MK6CXD

Open Access Theses and Dissertations