Numerical Evaluation on the Steel Plate Shear Wall Design Parameters for Improved Cyclic Behavior

Abstract

In previous studies, the relationship between the collapse behavior of steel plate shear walls (SPSW) and the design parameters beyond the design drift limits is not addressed in the same framework. In this study, the effects of design parameters, such as the column flexibility parameter, axial load level on boundary columns, column-to-beam stiffness ratio, plate thickness and plate aspect ratio, on the deformation capacity and failure modes of steel plate shear walls are investigated in a parametric study using the finite element models of three-story SPSWs with rigid beam-column connections (moment-resisting frames). Models are analyzed under monotonic and cyclic loading. The ranges of parameters in combination leading to poor, moderate and improved displacement capacity, failure mechanism and energy dissipation capacity of SPSWs are identified. A formula is developed to estimate the ultimate drift ratio of SPSWs using design parameters. The infill plate-frame interaction is investigated and it is determined that 25% of the total shear force resisted by the frame component is necessary for desired seismic behavior of SPSWs. © 2022, Korean Society of Steel Construction.