Shaking Table Test on a Perforated Buckling-Restrained Steel Plate Shear Wall Structure

Abstract

ABSTRACT In order to avoid local buckling at the edge of infill plates, perforations were introduced in the buckling-restrained steel plate shear wall (BRW) in this paper. And a shaking table test on a 1/4 scaled, four-storey, perforated BRW structure was performed to investigate seismic behavior of BRW structures. During the test, no failure at the edge of the infill plate was observed. The test structure remained essentially intact till the end of the 1.2 g excitations and the residual deformation of the test structure was negligible. In addition, the fundamental frequency of the test structure decreased only 2% after 1.2 g excitations, indicating that there is no need to repair this perforated BRWs structure. The input energy from earthquake was mainly dissipated in first two storeys, in spite of the maximum drifts of each floors differed little from others, as the interstorey drift of the upper storeys were dominated by the overturning effect of the lower storeys. A finite-element (FE) model of the test structure (donated as BR model) was developed using the shell element provided by ABAQUS/Standard, and numerical values agreed well with the test results. Finally, the seismic behaviors of the BR model and a perforated steel plate shear wall structure model (donated as SP model) were compared to show the discrepancies of those two on overall responses, shear force participating ratios of the infill plate, the stress distribution of the infill plate and the additional influences on boundary columns.