Seismic Performance Of Steel Plate Shear Walls Considering Various Design Approaches PDF Download
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| Author | : Ronny Hasudungan Purba |
| Publisher | : |
| Total Pages | : 529 |
| Release | : 2014 |
| Genre | : Building, Iron and steel |
| ISBN | : |
Download Seismic Performance of Steel Plate Shear Walls Considering Various Design Approaches Book in PDF, ePub and Kindle
"This report presents the results of experimental and analytical studies to investigate the seismic performance of steel plate shear walls (SPSWs) considering different design philosophies of horizontal boundary elements (HBEs) and infill plates. The experimental study on a three-story SPSW specimen showed the development of HBE in-span hinges which resulted in an accumulation of plastic incremental deformations. A finite element investigation on the tested SPSW specimen demonstrated similar behavior. Furthermore, collapse assessment of SPSWs with various structural configurations (e.g., panel aspect ratio, seismic weight intensity, and number of stories) was conducted to investigate impact of haring of story shear forces between the boundary frames and infill plates on the performance of SPSWs. SPSWs designed with the current seismic performance factors specified in the ASCE7-10 and neglecting the contribution of their boundary moment resisting frames to resist story shear forces met the FEMA P695 performance criterion, while that was not the case for SPSWs designed considering the sharing of story shear forces between the boundary frame and infill plates. Adjusted seismic performance factors were required for the latter SPSWs to rigorously meet the FEMA P695 performance criteria. Most importantly, the latter SPSWs were found to have a higher probability to suffer significantly larger interstory drift than the former. This research extends work reported in "Impact of Horizontal Boundary Elements Design on Seismic Behavior of Steel Plate Shear Walls" by R. Purba and M. Bruneau, MCEER-10-0007. The finite element analysis was performed using the software ABAQUS/Standard while the collapse assessment was performed using the software OpenSees"--Page iii.
| Author | : MOON MOON DHAR |
| Publisher | : |
| Total Pages | : 147 |
| Release | : 2015 |
| Genre | : |
| ISBN | : |
Download Seismic Performance of Steel Plate Shear Walls Using Nonlinear Static Analysis Book in PDF, ePub and Kindle
Unstiffened steel plate shear wall (SPSW) is considered as a primary lateral load resisting system due to its significant post-buckling strength, high ductility, stable hysteretic behaviors and robust initial stiffness. Nonlinear seismic analysis can accurately estimate structural responses, however, the method is very time consuming and may not be suitable for regular engineering practice. On the other hand, traditional pushover analysis method does not consider contributions of higher modes to the structural responses and thus, often do not provide good estimation of seismic responses for taller buildings. Capacity-Spectrum Method (CSM) and modal pushover analysis (MPA) are two simple nonlinear static methods that have been proposed and recently used for seismic performance evaluation of few lateral load-resisting systems. This research further examines the applicability of CSM and MPA methods to assess seismic performance of steel plate shear walls. A nonlinear finite element model was developed and validated with experimental studies. Three different SPSWs (4-, 8-, and 15-storey) designed according to capacity design approach were analysed by subjecting the steel shear walls under artificial and real ground motions for Vancouver. The CSM and MPA procedures were applied to analyse the selected SPSWs and the results were compared with more accurate nonlinear seismic analysis results. It is observed that both CSM and MPA procedures can reasonably predict the peak roof displacements for low-rise SPSW buildings. In addition, MPA procedure, which includes contributions of higher modes when estimating seismic demands of buildings, provides better predictions of critical seismic response parameters for taller SPSWs.
| Author | : Yang Lv |
| Publisher | : Springer Nature |
| Total Pages | : 198 |
| Release | : 2022-02-10 |
| Genre | : Technology & Engineering |
| ISBN | : 9811686947 |
Download Steel Plate Shear Walls with Gravity Load: Theory and Design Book in PDF, ePub and Kindle
This book is written by subject experts based on the recent research results in steel plate shear walls considering the gravity load effect. It establishes a vertical stress distribution of the walls under compression and in-plane bending load and an inclination angle of the tensile field strip. The stress throughout the inclined tensile strip, as we consider the effect of the vertical stress distribution, is determined using the von Mises yield criterion. The shear strength is calculated by integrating the shear stress along the width. The proposed theoretical model is verified by tests and numerical simulations. Researchers, scientists and engineers in the field of structural engineering can benefit from the book. As such, this book provides valuable knowledge, useful methods, and practical algorithms that can be considered in practical design of building structures adopting a steel shear wall system.
| Author | : Hassan Moghimi |
| Publisher | : |
| Total Pages | : 288 |
| Release | : 2013 |
| Genre | : Earthquake resistant design |
| ISBN | : |
Download Steel Plate Shear Walls for Low and Moderate Seismic Regions and Industrial Plants Book in PDF, ePub and Kindle
Steel plate shear walls have traditionally been perceived to be suitable mainly for high seismic regions due to their great ductility and cyclic energy dissipation capacity. Therefore, design and detailing requirements have become increasingly onerous in an attempt to maximize their performance, effectively making the system uneconomical in other regions. Developing applications specifically for low and moderate seismic regions has largely been neglected by researchers. Moreover, despite unique advantages of the system in terms of inherent high ductility and redundancy, its performance under accidental blast has not been investigated systematically. The objective of this research is to examine these neglected areas. Different practical details are investigated to reduce the force demands on the boundary frame of the wall system and ultimately reduce the construction cost in low seismic regions. A seismic zone-independent performance-based design method is developed and the efficiency of each detail is studied using comprehensive finite element simulations. It was found that suitable details for low seismic applications include simple beam-to-column connections, modular construction, and adopting a more liberal design philosophy for the columns. A large-scale two-story steel plate shear wall test specimen was designed based on the efficient details for the limited-ductility performance application and tested under gravity load concurrent with cyclic lateral loads. The test results are used to assess its overall seismic performance and verify the efficiency of the proposed design philosophy and selected details. The specimen, overall and in its details, showed excellent performance with high ductility. The nature of the infill plate forces applied to the boundary frame members is discussed in detail, and the reasons for achieving conservative column design forces in current capacity design methods are described. A performance-based capacity design method for the wall system is proposed and the target performance level is defined in terms of ductility and redundancy. Based on new and previous experimental data, a holistic and sound set of principles for capacity design of steel plate shear walls for three different performance levels--including limited-ductility, moderately ductile, and ductile--along with their design provisions, are developed. The method is applied to design examples and verified against experimental results. Another objective of this research was to explore the possible application of steel plate shear walls as a protective structure in industrial plants. Advanced and comprehensive numerical models that take into account important issues affecting the blast design are developed. The blast performance of the system is investigated by means of iso-response curves for both in-plane and out-of-plane blast orientations and different response parameters. An analytical normalization method is proposed that produces dimensionless iso-response curves.
| Author | : Patricia M. Clayton |
| Publisher | : |
| Total Pages | : 693 |
| Release | : 2013 |
| Genre | : |
| ISBN | : |
Download Self-centering Steel Plate Shear Walls Book in PDF, ePub and Kindle
The self-centering steel plate shear wall (SC-SPSW) is a lateral force-resisting system that is capable of providing enhanced seismic performance, including recentering after an earthquake. The primary lateral strength of the SC-SPSW is provided by thin steel infill plates, referred to as web plates, that are connected to the beams and columns. During lateral sway, the web plate resists lateral load through the development of tension field action, and energy is dissipated through ductile yielding of the plate. Unlike conventional steel plate shear walls, the boundary frame in the SC-SPSW employs post-tensioned (PT) beam-to-column connections that are allowed to rock open during lateral sway. If properly designed, the PT connections eliminate damage in the boundary frame and provide restoring forces necessary to recentering the building during an earthquake, thus reducing post-earthquake downtime and repair costs. This research builds upon previous analytical and numerical proof-of-concept studies on SC-SPSWs. Experimental testing was conducted to better understand SC-SPSW behavior and seismic performance. The experimental program consisted of (1) a series of large-scale subassembly cyclic tests to evaluate the impact of various design parameters on SC-SPSW behavior and component demands and (2) full-scale two-story pseudo-dynamic tests to evaluate system performance at three different seismic hazard levels. These tests also investigated possible performance-enhancing variations in SC-SPSW design that were not considered in the previous proof-of-concept study. Post-tensioned column base connections were proposed to eliminate damage in the columns and provide additional recentering. SC-SPSWs with web plates that are only connected to the beams were proposed as a means of mitigating web plate tearing and reducing column demands. Methods for designing PT column base connections and SC-SPSWs with web plates connected to the beams only are presented. Numerical investigations were conducted to evaluate different methods of modeling web plate behavior in SC-SPSWs, ranging from the relatively simple tension-only strip model to the more complex shell element model. When used in cyclic or dynamic analyses, the tension-only strip model was found to significantly underestimate the energy dissipation provided by the web plate, while the shell element model was too computationally demanding for wide-spread implementation. Based on numerical and experimental observations, a modified tension-compression strip model was proposed to conservatively approximate the web plate unloading resistance and the additional energy dissipation it provides. Nonlinear response history analyses were conducted to asses seismic performance of several three- and nine-story SC-SPSW designs. These analyses compared SC-SPSWs with web plates connected to the beams and columns (fully-connected) and SC-SPSWs with web plates connected to the beams only (beam-connected). Results showed that SC-SPSWs using beam-connected web plates had smaller boundary frame members and larger drift demands than their fully-connected web plate counterparts; however, they were still able to meet proposed performance objectives. The numerical simulations also investigated the effects of considering the web plate unloading resistance in the model (e.g. the traditional tension-only model vs. the modified tension-compression model). These analyses showed that considering even small amounts of compression in the strip model significantly reduced drift demands.
| Author | : Ehsan Noroozinejad Farsangi |
| Publisher | : Springer |
| Total Pages | : 494 |
| Release | : 2019-05-03 |
| Genre | : Technology & Engineering |
| ISBN | : 9811374465 |
Download Resilient Structures and Infrastructure Book in PDF, ePub and Kindle
This book discusses resilience in terms of structures’ and infrastructures’ responses to extreme loading conditions. These include static and dynamic loads such as those generated by blasts, terrorist attacks, seismic events, impact loadings, progressive collapse, floods and wind. In the last decade, the concept of resilience and resilient-based structures has increasingly gained in interest among engineers and scientists. Resilience describes a given structure’s ability to withstand sudden shocks. In other words, it can be measured by the magnitude of shock that a system can tolerate. This book offers a valuable resource for the development of new engineering practices, codes and regulations, public policy, and investigation reports on resilience, and provides broad and integrated coverage of the effects of dynamic loadings, and of the modeling techniques used to compute the structural response to these loadings.
| Author | : Arghya Kamal Chatterjee |
| Publisher | : |
| Total Pages | : |
| Release | : 2013 |
| Genre | : |
| ISBN | : |
Download Seismic Response Analysis of Steel Plate Shear Wall Systems Using Detailed and Simplified Models Book in PDF, ePub and Kindle
| Author | : Patricia M. Clayton |
| Publisher | : |
| Total Pages | : 136 |
| Release | : 2010 |
| Genre | : Earthquake resistant design |
| ISBN | : |
Download Self-centering Steel Plate Shear Walls Book in PDF, ePub and Kindle
| Author | : Tadeh Zirakian |
| Publisher | : |
| Total Pages | : 233 |
| Release | : 2013 |
| Genre | : |
| ISBN | : |
Download Seismic Performance and Design of Steel Plate Shear Walls with Low Yield Point Steel Infill Plates Book in PDF, ePub and Kindle
Steel plate shear walls (SPSWs) have been frequently used as the primary or part of the primary lateral force-resisting system in design of low-, medium-, and high-rise buildings. Their application has been based on two different design philosophies as well as detailing strategies. Stiffened and/or stocky-web SPSWs with improved buckling stability and high seismic performance have been mostly used in Japan, which is one of the pioneering countries in design and application of these systems. Unstiffened and slender-web SPSWs with relatively lower buckling and energy dissipation capacities, on the other hand, have been deemed as a rather economical alternative and accordingly widely used in the United States and Canada. Development and use of low yield point (LYP) steel with considerably low yield stress and high elongation capacity provides the possibility to combine merits of these two distinctive design strategies, and consequently result in rather cost-effective and high-performing SPSW systems. Although some reported studies have demonstrated the advantages of LYP steel shear walls, various aspects of structural and seismic characteristics of these systems have not been investigated thoroughly. In particular, the linkage between structural specifications and seismic performance and pathway to performance-based design of these systems are largely undeveloped. Hence, systematic investigations are required to facilitate the seismic design and prevalent application of such promising lateral force-resisting and energy dissipating systems. Although some reported studies have demonstrated the advantages of LYP steel shear walls, various aspects of structural and seismic characteristics of these systems have not been investigated thoroughly. In particular, the linkage between structural specifications and seismic performance and pathway to performance-based design of these systems are largely undeveloped. Hence, systematic investigations are required to facilitate the seismic design and prevalent application of such promising lateral force-resisting and energy dissipating systems. The main objectives of this research are to evaluate the structural behavior and seismic performance of unstiffened LYP steel shear wall systems in a rather comprehensive manner. To achieve these objectives, element-level investigations on steel plates, component-level investigations on SPSW panels, and system-level investigations on multi-story steel frame-shear wall structures are performed in a hierarchical and systematic manner. Through detailed element- and component-level investigations, it is shown that employment of LYP steel infill plates in SPSW systems facilitates the design and effectively improves the buckling stability, serviceability, and energy absorption capacity of such lateral force-resisting systems. Some practical design tools and recommendations are also provided through analytical and numerical studies. In system-level investigations, the effectiveness of use of LYP steel material in design and retrofit construction is demonstrated through nonlinear time-history analysis as well as seismic response and performance assessment of multi-story structures subjected to earthquake ground motions representing various hazard levels. Ultimately, the fragility methodology is utilized by developing appropriate fragility functions for probabilistic seismic performance and vulnerability assessment of structures designed and retrofitted with conventional and LYP steel infill plates. The results of this study are indicative of relatively lower damage probability and superior seismic performance of LYP steel shear wall systems.
| Author | : Nozhat Sadat Ghazi Sharyatpanahi |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2021 |
| Genre | : |
| ISBN | : |
Download Seismic Performance of Steel Shear Walls with Rectangular Openings Book in PDF, ePub and Kindle
Unstiffened Steel Plate Shear Wall (SPSW) has widely been accepted as an effective lateral load resisting system for resisting wind and earthquake loads. This system has significant post-buckling strength, high ductility, stable hysteretic behaviors and robust initial stiffness. Composite Plate Shear Wall (C-PSW) is also a new form of steel shear wall which has a steel plate and a layer of reinforced concrete (RC) at one or both sides of the steel plate. The steel plate and the concrete layer are connected with shear studs to have a complete composite behavior. C-PSW has some advantages over SPSW such as protection against fire and blast loading. In addition, the presence of the concrete panel can prevent buckling of the steel plate and thereby increase the stiffness, shear strength, and energy dissipation capacity of the C-PSW system in comparison to conventional SPSW system. Often, SPSWs and C-PSWs need to accommodate large door or window size openings in the infill plates, such as when SPSWs/C-PSWs are used in the building central cores around the elevators. Current AISC design standard recommends use of horizontal and vertical local boundary elements (LBE), in the form of stiffeners, around these large rectangular openings to anchor the tension field developed in the infill plate. Research on SPSW with stiffened large openings like door and window sized openings is limited. Also research on C-PSWs with large openings is still in the initial stage and a significant amount of research is needed before it can be adopted by the Canadian steel design code. This study presents seismic performance of SPSWs and C-PSWs with door size openings in the web plate. Nonlinear FE models were developed in ABAQUS for SPSW and C-PSW with door size openings. The FE models include both material and geometric nonlinearities. The proposed FE model was validated against available experimental data. The study describes details of the validation of the finite element model. Two multi-storey (3- and 5-storey) SPSWs and C-PSWs were designed following the capacity design concept and the guidelines of current AISC seismic design standard. The performance of selected SPSWs and C-PSWs were investigated through conducting a series of time history analysis using a suite of 8 ground motions that are developed for western Canada and are compatible with Vancouver design response spectrum. Nonlinear seismic analysis shows that both SPSWs and C-PSWs with rectangular openings exhibit excellent seismic performance with high ductility and strength when subjected to strong ground motions. Maximum contribution of various structural components (i.e., infill plate and boundary members) in resisting applied lateral loads are calculated from seismic analysis and presented in the study. The maximum interstorey drift is found to be within the code limit for both systems under all ground motions. It is observed that the designed stiffeners around the openings are very effective in limiting the in-plane and out-of-plane deformations around the rectangular openings, especially in the SPSW system and the presence of these stiffeners do not alter the recommended yielding sequence of the system. In addition, it is observed that current AISC requirement to attach horizontal and vertical LBE around rectangular opening of C-PSW is conservative and can be relaxed if the infill plate is connected with the concrete panel with adequate shear connectors.
