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Showing 1 to 16 of 16 for “"Pushover analysis"”.
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Modal pushover analysis for high-rise buildings
Pushover analysis is a nonlinear static analysis tool widely used in practice to predict and evaluate seismic performance of structures. Since only the fundamental mode is considered and the inelastic theorem is imperfect for the conventional pushover analysis, a modified Modal Pushover Analysis …
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Finite Element Analysis of the Connection Behavior of Precast Prestressed Piles to Cast-In-Place Bent Caps
… These piles were then subjected to a simulated "pushover" analysis to determine the behavior and moment capacity of each. </p> <p>Results of the study show that as the pile size get larger, the moment capacity is increased at the sacrifice of ductility. Additionally, moment capacity and ductility …
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Seismic fragility of buildings damaged by past earthquakes
Fragility analysis plays an important role in seismic risk assessment. Current fragility models of buildings are mostly focusing on the as-built condition of the structure while ignoring the possibility of having multiple earthquakes during the service life of the structure. However, considering …
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Inelastic seismic behavior of stiffening systems : multi-span simply-supported (MSSS) bridges
… is lower for stiffening systems, consistent with pushover analysis based on the seismic codes. However, considering many other damage indices like dissipated hysteretic energy and low-cycle fatigue damage index, it is quite likely that a stiffening system would sustain more damage than an …
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Performance-based seismic engineering of low and medium-rise steel frames
… a simple procedure is proposed which uses the pushover analysis method to estimate the average maximum interstory drift. The method defines a damage index which, after being calibrated, can directly be used for performance evaluation.
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Dynamic analysis of concrete coupled wall structures : a parametric study
… and the core shear wall structure. Static pushover analysis was applied in Phase I, and acceleration response spectrum was employed in Phase II. The comparison of the results from both phases provided valuable insight on the structural behaviors of shear walls. The Phase I results showed …
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Simulation-based fragility relationships for unreinforced masonry buildings
… an extensive literature survey is conducted on pushover analysis of URM structures. Using this data, capacity diagrams are generated, from which damage exceedance limit states are defined. Demand is simulated using synthetically derived accelerograms representative of the CEUSA. Structural …
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Seismic Rehabilitation of Steel Moment Frames Vulnerable to Soft-Story Failures Through Implementation of Rocking Cores
… to the system. In addition, nonlinear static pushover analyses are performed to address the beneficial contribution of the RC to the system under the performance objectives including immediate occupancy, life safety, and collapse prevention. The Monte-Carlo simulation technique is used to …
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Improved seismic analysis of unreinforced masonry buildings with flexible diaphragms
… with rigid diaphragms. As a result, the seismic analysis methods developed for buildings with rigid diaphragms, as well as our basic understanding of the dynamic behaviours of buildings under earthquake excitations, cannot be applied directly for buildings with flexible diaphragms. This thesis …
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Inelastic Dynamic Behavior And Design Of Hybrid Coupled Wall Systems
… mode. The adequacy of design based on the pushover analysis procedure as promoted in FEMA-356 (2000) is also investigated using the dynamic analysis results. Substantial discrepancies between both methods are observed, especially in the case of the 18-story system. A critical assessment of …
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Influence of the Gravity System on the Seismic Performance of Special Steel Moment Frames
… important effect but should be included in the analysis. The second part of the investigation looks more in depth at the role of the gravity columns on the collapse performance of SMFs. Using the 2-, 4- and 8-story SMFs, the gravity columns are incorporated using the approach where all the …
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On the Performance of Super-Long Integral Abutment Bridges: Parametric Analyses and Design Optimization
… integral abutment bridge, including parametric analysis, pushover analysis, and dynamic tests. Then, the performance of integral abutment bridge was better understood, and no critical structural problem was found for integral abutment bridge. Based on that, length limit for this kind of bridge …
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The Seismic Behavior of Steel Structures with Semi-Rigid Diaphragms
This thesis investigates the torsional performance of steel structures with and without rigid diaphragm constraints through numerical simulations and evaluates the appropriateness of relevant design provisions in current seismic design codes. In the first part of the work, six theme structures with …
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An overdamped multimodal adaptive nonlinear static procedure for seismic assessment of rc infilled frames
… of the upgraded building. Nonlinear dynamic analysis is widely recognised as the most accurate tool to predict the seismic behaviour of structures. However, this type of analysis has a high computational cost, and it is not an approach that can be extensively applied for professional purposes …
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Effect of Viscous Fluid Dampers on Steel Moment Frame Designed for Strength and Hybrid Steel Moment Frame Design
… terms of dynamic stability. Incremental Dynamic Analysis (IDA) was implemented to investigate the benefits of the dampers on the structural behavior. Using ten different earthquakes scaled up to a maximum target multiplier two, with ten increments, damage measures such as interstory drift, …
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Performance assessment of special concentrically-braced frames in moderate seismic regions
… design procedure. The characteristic ductile pushover response for SCBFs was observed and three regions of secondary stiffness were defined and used to evaluate frame behavior. The secondary stiffness term that describes the first region of negative stiffness indicated the predominant behavior …