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 46 for “"Seismic behavior"”.
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Seismic Behavior of Pile -Supported Bridges
The presented modeling technique is applied for seismic analysis of an existing truss-arch bridge spanning across the Mississippi River in southern Illinois (the Cairo Bridge). The nonlinear time-history analysis is performed using input motions obtained from ground response analysis of bedrock …
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Seismic behavior of semi-rigid steel frames
… for the construction of steel frames in seismic areas. Bolted semi-rigid connections have been recognized as an attractive alternative to welded connections. However, existing knowledge on the behavior of the connection is either from testing of beam-to-column subassemblies under …
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Seismic behavior of bridge pier column lap splices
… these bridges were designed prior to the new seismic design methods which were implemented in the mid-seventies. Bridges constructed in accordance with the new design methods have performed well in recent earthquakes. However, the large number of older bridges that are still in service, …
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Seismic Behavior of concrete filled steel Tubular Built-up columns
… seldom research has been reported on the dynamic behavior of CFST built-up columns. The present research investigates the seismic behavior of CFST built-up columns. A detailed literature survey on the CFST built-up structures, including mechanical characteristics, applications, ductility in …
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Finite Element Analysis of the Seismic Behavior of Guyed Masts
Seismic design of guyed masts, commonly used in the broadcasting and telecommunications industries, has not been fully addressed in the United States. There is no specific design code, and only a limited amount of research has been reported on the subject. This research investigates the behavior of …
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The Seismic Behavior of Steel Structures with Semi-Rigid Diaphragms
… of relevant design provisions in current seismic design codes. In the first part of the work, six theme structures with different (1) in-plane stiffness of diaphragm, and (2) horizontal configurations of vertical braced frames were designed and their performance evaluated through both …
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Seismic behavior and design of integral abutment bridges in southern Illinois
… has led to numerous studies concerning their behavior when subjected to a variety of loads. The seismic behavior of IABs is of particular interest to regions such as southern Illinois, where proximity to the New Madrid Seismic Zone may create significant ground motion accelerations during an …
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Inelastic seismic behavior of stiffening systems : multi-span simply-supported (MSSS) bridges
Stiffening behavior can result from interaction between a structure (base system) and its surrounding environment as in the MSSS bridge soil-structure interaction. In this study, three MSSS bridge cases are parametrically analyzed and their dynamic characteristics and behavior are presented and …
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Static stability and seismic behavior of the dome of the Hagia Sophia
… Hagia Sophia, particularly with respect to its seismically active location, is a testament to the iterative and empirical construction techniques of its constructors. The existing analyses of the structure have focused primarily on architectural features as well as seismic response using various …
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Seismic behavior of circular reinforced concrete bridge columns under combined loading including torsion
… and analytical studies to investigate the seismic performance of circular RC columns under combined loading including torsion. The main variables considered here were (i) the ratio of torsion-to-bending moment (T/M), (ii) the ratio of bending moment-to-shear (M/V) or shear span (H/D), and …
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Use of Permanent Magnets to Improve the Seismic Behavior of Light-Framed Structures
… the life safety objective of the current seismic design approach. The main source of energy dissipation in such structures is the inelastic behavior of the connectors connecting framing and sheathing elements. Wood framed structures when subjected to strong ground excitations experience …
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Evaluating the Effect of Decking Fasteners on the Seismic Behavior of Steel Moment Frame Plastic Hinge Regions
… actuated fasteners (PAF) and puddle welds on the seismic behavior of steel moment connections. In seismic regions, PAF are currently prohibited in the connection region (referred to as the protected zone) due to the concern of low-cycle fatigue fracture. There is almost no information available in …
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A Low Cycle Fatigue Testing Framework for Evaluating the Effect of Artifacts on the Seismic Behavior of Moment Frames
… there is a dearth of experimental data on the seismic behavior of structural systems with artifacts. For instance, full-scale testing of moment resisting connections is expensive which makes it economically infeasible to experimentally examine the wide range of possible artifact types, artifact …
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Study of the seismic behavior of steel plate shear walls with coupling through analysis and testing of a small-scale model
As part of a multi-institutional study of seismic analysis, behavior, design and performance of the steel plate shear wall with coupling (SPSW-WC) system, an integrated analytical, numerical, and experimental study was conducted on a small-scale, three-story SPSW-WC specimen. The small-scale …
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Shake table experiments for the determination of the seismic response of jumbo container cranes
… Despite their importance to port operations, the seismic behavior of cranes has been largely ignored. Since the 1960s, industry experts have recommended allowing cranes to uplift, believing that it would limit the amount of seismic loading. However, modern cranes have become larger and more …
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Towards Enhanced Earthquake Resilience: Linking Early Warning Systems, Ground Motion Prediction, and Stress Field Analysis
… both our understanding and preparedness for seismic events. This study investigates several interconnected aspects of earthquake science to enhance our ability to forecast and mitigate the impacts of these natural disasters. We explore the development of Earthquake Early Warning (EEW) …
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Effects of residual stresses and initial imperfections on earthquake response of steel moment frames
… methods, the interface between the DM, the AISC Seismic Provisions and the seismic design requirements in ASCE-7 is not fully established. Since the DM, which was developed for design scenarios that do not contain seismic loading, includes the effects of initial geometric imperfections and …
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Seismic Evaluation and Performance Enhancement of Industrial Storage Racks
… themselves may be adequately designed for seismic effect, the rack performance also significantly impacts the seismic risk to society both in terms of life-safety and economic losses. The seismic behavior of industrial storage racks is fundamentally different than typical civil engineering …
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Development and experimental validation of self-centering buckling-restrained braces with shape memory alloy
… significant structural damage to dissipate the seismic energy. The structural damage and the residual drift that may result from the inelastic response can make a building difficult, if not financially unreasonable, to repair after an earthquake. As a result, development of systems that return …
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