Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 67 for “"limit states"”.
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Reliability-based design of a retaining wall
A retaining wall is subject to various limit states such as sliding, overturning and bearing capacity, and it can fail by anyone of them. Since a great deal of uncertainty is involved in the analysis of the limit states, the use of detenninistic conventional safety factors may produce a misleading …
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Embankment performance under earthquake loading
… and embankments is undertaken and damage states are categorized and classified. Limit states are developed that correspond to these damage classifications for both the pavement and earthquake engineering communities. The earthquake scenario is simulated using synthetically generated …
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Life cycle cost design of concrete structures
… based on the concept of exceedance of defined limit states, a principle commonly used in structural design. Two limit states relevant to corrosion of reinforcement a?? i) initiation of corrosion and ii) initiation of corrosion followed by cracking of the concrete cover are used. The service …
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Experimental and analytical investigation of localization and post-peak behavior of steel members in tension
Accurate simulation of extreme limit states in structures subjected to abnormal loads, earthquake, or blast requires detailed understanding of their post-peak behavior. In steel structures, these extreme-limit states are associated with local or global instability such as local buckling, tension …
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Numerical Study and Load and Resistance Factor Design (LRFD) Calibration for Reinforced Soil Retaining Walls
… resistance factor design (LRFD) (often called limit states design (LSD)) has been mandated in the AASHTO Bridge Design Specifications and will be adopted in future editions of Canadian Highway Bridge Design Code for all transportation-related structures including reinforced soil retaining …
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Load and resistance factor design of shallow foundations for bridges
… parameters for ultimate and serviceability limit states are evaluated. A random field model is employed to investigate the combined inherent spatial variability and systematic error for serviceability limit state. Advanced first order second moment method is then used to compute reliability …
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Cantos em concreto armado submetidos a tração na sua parte interna
… about model performance in predicting the limit states of service and ultimate load.
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Assessment of modeling sensitivity for nonlinear seismic analysis of highway bridges in Illinois
… on the seismic practices in the western United States, which focus on bridge configurations that dissipate energy either by plastic deformation of the piers or by specially designed isolation devices placed between the superstructure and substructure. The Illinois Department of Transportation …
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Evaluating Shear links for Use in Seismic Structural Fuses
… structural fuses. The ductile and brittle limit states identified based on the previous studies, are mathematically explained and prediction equations are proposed accordingly. Design methodologies are subsequently conceptualized for structural shear links to address shear yielding, …
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Vulnerability assessment of extended end-plate connections under mainshock-aftershock sequences
… mechanistic models. While all models have their limitations, mechanistic models have been shown to provide excellent balance between efficiency and accuracy in terms of analysis time and behavior prediction. In general, it has been shown than most models are able to accurately capture the …
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Computational and Experimental Investigation of Seismic Structural Fuse Shapes for Structural Systems
… is believed to exhibit more ductility than other limit states. However, computational and experimental studies on the shear yielding limit state are limited. Additionally, the transition between shear dominated and flexural dominated limit states has not been previously investigated. Hence, a …
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Interactive Buckling and Post-Buckling Studies of Thin-Walled Structural Members with Generalized Beam Theory
… structural members based on individual buckling limit-states and limited case of interactive buckling limit state. In order to develop design methods for most coupled buckling limit states, the interaction of buckling modes needs to be studied. This dissertation first introduces a generally …
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Method of reliability-based calibration of seismic structural design parameters
… with loads and resistance as well as the limited ability of analytical models to describe the response of a structure. To account for these uncertainties, the design parameters in current seismic codes need to be calibrated based on required safety and satisfactory performance under future …
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Alvenaria armada de tijolo vazado de barro - pilares curtos
… these structures under compression, at service limit and ultimate limit states. Fifteen columns of square section, built with air bricks usually used in constructions, were tested until the rupture point. The quantity and the category of reinforcing bars were used as parameters for variation. …
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Assessing levels of reliability for design criteria for hurricane and storm damage risk reduction structures
… also presented through stability and flowthrough limit states. Element reliabilities and overarching “system” reliabilities for a representative structure are quantified for hydrostatic hurricane storm surge loadings, soil loading, and dead loads. Wave loadings and impact loadings are not …
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Contributions in Uncertainty Quantification Towards Reliability-based Rock Engineering Design
… design which arise in the context of developing limit states design (LSD) protocols. In doing so, it identifies the discrepancies between geotechnical limit states design standards and customary rock engineering design procedures. These discrepancies are shown to be classified as (i) difficulties …
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Prestressed cable domes: structural behavior and design
… to various loadings, and to determine their limit states. An accompanying objective was to find improved methods for their design and construction. To accomplish these goals, a series of twelve 400 ft. span domes with varying depth-to-span ratios, number of polygon sides and number of …
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Analytical and experimental investigation of a flush moment end-plate connection with six bolts at the tension flange
… which is used in steel frame construction. The limit states of plate yielding and bolt fracture were analyzed using yield-line theory to predict endplate thicknesses and a split-tee analogy to develop a method to predict bolt forces. Five experimental tests were conducted on four configurations …
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Flexural Behaviour of Concrete Beams with High Strength Reinforcement
… A23.3:19 “Design of Concrete Structures” limits the maximum yield strength for design to 500 MPa. This thesis investigates the flexural behavior of concrete beams reinforced with HSR to assess whether current code provisions are appropriate. Curvature ductility ratios are calculated for …
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Development of lightweight FRP bridge deck designs and evaluations
… theoretically correlated to obtain applicable limit states based on the strain to failure approach. The study found that local resistance and force transfer across the joints were the areas of potential improvement. The remainder of the study showed adequate performance of the decks.
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