Structural Behaviour and Seismic Performance Assessment of Steel Plate Shear Walls with Corrugated, Perforated, and Low Yield Point Steel Web Plates PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Structural Behaviour and Seismic Performance Assessment of Steel Plate Shear Walls with Corrugated, Perforated, and Low Yield Point Steel Web Plates PDF full book. Access full book title Structural Behaviour and Seismic Performance Assessment of Steel Plate Shear Walls with Corrugated, Perforated, and Low Yield Point Steel Web Plates by Milad Bahrebar. Download full books in PDF and EPUB format.
Author: Milad Bahrebar Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
Steel plate shear walls (SPSWs) employing corrugated, perforated, and low yield point (LYP) steel infill plates are investigated in this research. Such lateral load-bearing systems are used in new and retrofit construction of low- to high-rise buildings. Employment of LYP steel with low yield stress and high elongation capacity combined with the use of corrugated web-plate providing relatively higher out-of-plane stiffness and strength results in the design of a high-performing structural system. Advantages of LYP steel as the infill plate material have been demonstrated in different studies; however, the structural characteristics of LYP steel shear walls employing corrugated and perforated infill plates have not been sufficiently and systematically investigated. A comprehensive parametric study is conducted in this research in order to investigate the structural behaviour and seismic performance of corrugated- and perforated-web, LYP steel shear wall systems. Detailed investigations on the geometry of the web-plate showed that the SPSWs with curved-corrugated and perforated infill plates are good and promising structural systems, and a desirable performance can be achieved through proper design and detailing of the system components. Assessment of the stiffness, buckling behaviour, and yielding of the considered SPSW models showed that the performance of panels made of ASTM A36 steel is more or less similar to the performance of those employing LYP steel plates with greater thickness. All the panels employing LYP steel exhibited high energy dissipation capability as a result of the superior LYP steel material properties. Such models, also, possessed excellent post-buckling strength behaviour which makes them highly qualified for seismic applications. It was also demonstrated that application of curved-corrugated and partially-connected infill plates made of LYP steel material with relatively larger thickness can result in the design of cost-effective and high-performing steel shear walls with considerable stiffening and damping capabilities.
Author: Milad Bahrebar Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
Steel plate shear walls (SPSWs) employing corrugated, perforated, and low yield point (LYP) steel infill plates are investigated in this research. Such lateral load-bearing systems are used in new and retrofit construction of low- to high-rise buildings. Employment of LYP steel with low yield stress and high elongation capacity combined with the use of corrugated web-plate providing relatively higher out-of-plane stiffness and strength results in the design of a high-performing structural system. Advantages of LYP steel as the infill plate material have been demonstrated in different studies; however, the structural characteristics of LYP steel shear walls employing corrugated and perforated infill plates have not been sufficiently and systematically investigated. A comprehensive parametric study is conducted in this research in order to investigate the structural behaviour and seismic performance of corrugated- and perforated-web, LYP steel shear wall systems. Detailed investigations on the geometry of the web-plate showed that the SPSWs with curved-corrugated and perforated infill plates are good and promising structural systems, and a desirable performance can be achieved through proper design and detailing of the system components. Assessment of the stiffness, buckling behaviour, and yielding of the considered SPSW models showed that the performance of panels made of ASTM A36 steel is more or less similar to the performance of those employing LYP steel plates with greater thickness. All the panels employing LYP steel exhibited high energy dissipation capability as a result of the superior LYP steel material properties. Such models, also, possessed excellent post-buckling strength behaviour which makes them highly qualified for seismic applications. It was also demonstrated that application of curved-corrugated and partially-connected infill plates made of LYP steel material with relatively larger thickness can result in the design of cost-effective and high-performing steel shear walls with considerable stiffening and damping capabilities.
Author: Tadeh Zirakian Publisher: ISBN: Category : Languages : en Pages : 233
Book Description
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: Ahmet Yigit Ozcelik Publisher: ISBN: Category : Languages : en Pages : 356
Book Description
Steel plate shear walls (SPSW) are a reliable lateral force-resisting system with high ductility, stable hysteretic response, and high lateral stiffness. The main lateral force-resisting elements of a SPSW are thin steel infill plates (web plates) that are connected to columns and beams on four edges. Due to a mechanism called tension field action, web plates pull in columns and induce significant flexural demands in columns when the system undergoes a lateral sway. Steel plate shear walls with beam-connected web plates (B-SPSW) are an alternative configuration to conventional SPSWs where columns are detached from web plates to eliminate column flexural demands resulting from tension field action. Due to the difference in the boundary conditions of web plates, the behavior of B-SPSWs is different than conventional SPSWs. A three-phase numerical study has been undertaken to investigate the seismic behavior of B-SPSWs. In the first phase, a parametric study was conducted to characterize beam-connected web plate behavior using validated finite element models and a simplified model was proposed to simulate cyclic behavior of beam-connected web plates under lateral loading. In the second phase, web plate and beam design equations were proposed and eighteen B-SPSWs possessing different geometric characteristics were designed for a low-seismic site using these equations. The B-SPSWs were subjected to ground motions to assess their seismic performance. The results of the proof-of-concept study indicated that B-SPSWs would be an attractive alternative lateral force-resisting system for low- and moderate-seismic regions. The third phase focused on the behavior of B-SPSW columns. The columns of the B-SPSWs considered in the second phase of the study were remodeled adopting more sophisticated modeling techniques to study the column behavior in detail. The results indicated that column flexural demands resulting from column rotations at floor levels due to differential interstory drifts caused column stability problems for some cases even if the axial load demands were below the design axial loads. Then a parametric study was conducted on isolated columns to quantify the effect of these flexural demands on column buckling strength. An empirical equation was proposed to estimate the reduction in the column buckling strength due to the moment demands associated with differential lateral drifts that are not considered in the design stage.
Author: Ronny Hasudungan Purba Publisher: ISBN: Category : Building, Iron and steel Languages : en Pages : 529
Book Description
"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: Nozhat Sadat Ghazi Sharyatpanahi Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
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.
Author: Kallol Barua Publisher: ISBN: Category : Languages : en Pages : 166
Book Description
Perforated Steel Plate Shear Wall (P-SPSW) is a relatively new lateral load resisting system used for resisting wind and earthquake loads. Current North American standards have recently adopted this new lateral load resisting system and proposed guidelines for the design of P-SPSWs. Research on P-SPSW is in the initial stage and to the best of this researcher’s knowledge, no seismic performance of code designed P-SPSWs has been studied yet. The main objective of this study was to evaluate the seismic performance of code designed P-SPSWs. Three multi-storey (4-, 8-, and 12-storey) P-SPSWs were designed according to the seismic provisions in NBCC 2010 and CSA/CAN S16-09. Nonlinear time history (NTH) analysis was conducted using detailed finite element (FE) modeling techniques. The finite element (FE) model developed was validated with two experiments results for quasi- static monotonic and cyclic analysis. Excellent correlation was found between detailed FE analysis and tests result. For seismic analysis a series of ten ground motion data were chosen which were compatible with Vancouver response spectrum. All the perforated shear walls exhibited excellent seismic behavior including high stiffness, stable ductility, and good energy dissipation during nonlinear time history (NTH) analysis. It was observed from the seismic analysis that proposed code equation provided a good estimation of the shear strength of the perforated plate when the plate was fully yielded. Thus, it can be concluded that recommended equation of CSA/CAN S16-09 is conservative to select the infill plate thickness of perforated steel plate shear wall. The N2 method has been used as an easy means of seismic demand evaluation compared to nonlinear time history analysis. The applicability of the N2 method for seismic demand assessment of P-SPSWs is investigated in this research. Results from N2 method was compared with the more accurate NTH analysis results. It was observed that the N2 method predicted seismic response parameters such as roof displacement reasonably accurately for 4-and 8-storey P-SPSW. For 12-storey P-SPSW N2 method slightly overestimated the roof displacement. The applicability of the modified strip model (MSM) was also evaluated in this research for unstiffened P-SPSW. After validating two experiments, the model was used for the three selected P-SPSWs. Monotonic pushover analysis results were compared with detailed FE analysis results. It was observed that the modified strip model efficiently captures the inelastic behavior of multi-storey unstiffened P-SPSWs with adequate accuracy. The ultimate strength was predicted well, and the initial stiffness was slightly underestimated.
Author: Federico Mazzolani Publisher: CRC Press ISBN: 020311941X Category : Technology & Engineering Languages : en Pages : 1147
Book Description
Behaviour of Steel Structures in Seismic Areas is a comprehensive overview of recent developments in the field of seismic resistant steel structures. It comprises a collection of papers presented at the seventh International Specialty Conference STESSA 2012 (Santiago, Chile, 9-11 January 2012), and includes the state-of-the-art in both theore
Author: Milad Bahrebar
Author: Milad Bahrebar
Author: Tadeh Zirakian
Author: Ahmet Yigit Ozcelik
Author: Darren Vian
Author: Ronny Hasudungan Purba
Author: Bing Qu
Author: Nozhat Sadat Ghazi Sharyatpanahi
Author: Kallol Barua
Author: Federico Mazzolani
Author: Federico M. Mazzolani