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UNSTIFFENED STEEL PLATE SHEAR WALL PERFORMANCE UNDER CYCLIC LOADING By Adam S. Lubell,1 Helmut G. L. Prion,2 Carlos E. Ventura,3 Member, ASCE, and Mahmoud Rezai4 ABSTRACT: In the last few decades, steel plate shear walls have been introduced as primary lateral load resisting elements in several buildings around the world. This paper presents research from a study on the performance of unstiffened thin steel plate shear walls for medium- and high-rise buildings. In this concept, the postbuckling strength of the panels is relied upon for most of the frame shear resistance, similar to the slender web of a plate girder. Experimental testing was conducted on two single- and one four-story steel shear wall specimens, under cyclic quasi-static loading. Each specimen consisted of a single bay with column-to-column and floor-to-floor dimensions of 900 mm, representing a quarter-scale model of a typical office building core. Identification of load-deformation characteristics and the stresses induced in the structural components were the primary objectives of the testing program. Good energy dissipation and displacement ductility capacities were achieved. Primary inelastic damage modes included yielding of the infill plates combined with column yielding in the single-panel tests and yielding of the columns for the multistory frame. The experimental results were compared with simplified tension field analytical models, based on recommendations in the Canadian code for limit-states design of steel structures. The models, in general, provided good predictions of the postyield strength of the specimens, with less satisfactory results for elastic stiffness calculations. From the experimental and analytical results, the adequacy of existing design guidelines were assessed. ASCE_2998_0733-9445%282000%29126%3A4%28453%29.pdf

Study on Seismic Performance of a Stiffened Steel Plate Shear Wall with Slits Jin-yu Lu,1,2 Lu-nan Yan,1,2 Yi Tang,1,2 and Heng-huaWang1,2 1Key Lab of Concrete and Prestressed Concrete Structures of Ministry of Education, Nanjing 210096, China 2School of Civil Engineering, Southeast University, Nanjing 210096, China Correspondence should be addressed to Jin-yu Lu; davidjingyu@gmail.com Received 8 June 2015; Revised 4 August 2015; Accepted 16 August 2015 Academic Editor: Giorgio Dalpiaz Copyright © 2015 Jin-yu Lu et al.This is an open access article distributed under the Creative CommonsAttribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. To determine the force mechanism for the steel plate shear wall with slits, the pushover analysis method was used in this study. An estimated equation for the lateral bearing capacity which considered the effect of edge stiffener was proposed. A simplified elastic-plastic analytical model for the stiffened steel slit wall composed of beam elements was presented, where the effects of edge stiffeners were taken into account. The wall-frame analysis model was established, and the geometric parameters were defined. Pushover analysis of two specimens was carried out, and the analysis was validated by comparing the results from the experiment, the shell element model, and a simplified model.The simplified model provided a good prediction of the lateral stiffness and the strength of the steel slit wall, with less than 10%error compared with the experimental results.Themutual effects of the bearing wall and the frame were also predicted correctly. In the end, the seismic performance evaluation of a steel slit wall-frame structure was presented. The results showed that the steel slit wall could prevent the beams and columns from being damaged by an earthquake and that the steel slit wall was an efficient energy dissipation component. downloads.hindawi.com/journals/sv/aa/689373.pdf 689373.pdf

Experimental and numerical study of unstiffened steel plate shear wall structures Meng Wang a,⁎, Yongjiu Shi b, Jian Xu c,Weiguo Yang a, Yixin Li b a School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China b Department of Civil Engineering, Tsinghua University, Beijing 100084, China c China Southwest Architectural Design and Research Institute Corp. LTD, Chengdu 610081, China a r t i c l e i n f o a b s t r a c t Article history: Received 13 March 2015 Accepted 6 May 2015 Available online 20 June 2015 Keywords: Unstiffened thin steel plate shear wall structure Hysteretic behavior Energy dissipation capacity Ductility Finite element method (FEM) Column stiffness In order to investigate the seismic behaviors of unstiffened thin steel plate shear wall structure, tests of four three-story unstiffened steel plate shear wall specimens under cyclic loads were carried out. Parameters of the specimens included height-to-thickness ratio, span-to-height ratio and middle brace. The carrying capacity, hysteretic behavior, degraded characteristics, ductility, failuremodes, energy dissipation capacity were analyzed and compared deeply. Besides, the nonlinear finite element method of shear wall structure was also established, which was verified by test results. Finally, the effect of column stiffness on load-carrying capacity was studied. The practical requirements of in-plane and out-of-plane stiffness of edge column were suggested. The experimental and numerical results showed that: this kind structure exhibits high strength, good energy dissipation capacity, and good ductility (the ductility coefficients are more than 3.0). When the inter-story drift angle reaches 1/50, the strength degradation is no more than 5%, indicating that the structure has good seismic behaviors. The span-to-height ratio has little effect on load-carrying capacity, while slightly affects the initial stiffness and ductility. The effect of height-to-thickness ratio (thickness) on load-carrying capacity is relatively larger than other factors. The middle braces do not improve the behaviors of structures. The stiffness of edge column has great effect on lateral load-carrying capacity of shearwall structures. The value of column stiffness index could bewithin 2.0–2.5 to achieve the sufficient constraints and economical benefit. 1-s2.0-S0143974X15001406-main.pdf

FULL SCALE STEEL PLATE SHEAR WALL: NCREE/MCEER PHASE I TESTS C.H. Lin1, K.C. Tsai2, Y.C. Lin3, K.J. Wang4, B. Qu5 and M. Bruneau6 ABSTRACT Measuring eight meters tall and four meters wide, two 2-story SPSW specimens were constructed in NCREE. The thickness of SS400 grade steel plate for the first story wall is 3 mm and for the second story it is 2mm. All the boundary beam and column elements are A572 GR 50 steel. In the Phase I tests, each of the SPSWs have horizontal tube restrainers on both sides to minimize the out-of-plane displacement and the buckling sound. In the Phase 2 tests, damaged steel plates were removed and replaced with new plates without the use of any restrainer. In both phases, the specimens was pseudo-dynamically tested using three ground accelerations, which were recorded in the 1999 Chi-Chi earthquake and scaled up to represent seismic hazards of 2%, 10%, and 50% probabilities of exceedance in 50 years. Results of the Phase 1 tests show that; 1) the SPSWF specimen sustained three earthquakes without any significant wall fracture or overall strength degradation, 2) the horizontal restrainers were very effective in improving the serviceability of SPSWs, 3) the responses of the SPSWF can be simulated accurately using the strip model and the tension-only material property implemented in PISA3D computer program. 9CCEE Lin Tsai Lin Wnag Qu Bruneau.pdf

Experimental study of steel plate shear walls PA Timler, GL Kulak - 1983 - civil.ualberta.ca Abstract The use of steel plate shear walls to resist lateral forces in mult i-storey structures is a new and innovative design technique. Although a significant number of buildings have been constructed using the method, design has tended to be conservative, reflecting the ... Report No.114 University of Alberta Download: [Hidden Content] SER114TimlerandKulak.pdf