Abstract:Concrete filled double-steel-plate composite wall (CFDSPCW) with shear stud connectors is a new type of lateral-force-resisting construction component for high-rise buildings. In this paper, the in-plane shear resistance of CFDSPCWs is studied with nonlinear finite element analysis using ANSYS. To this end, some assumptions are made to simplify the numerical model. Based on the experimental results and the formula of shear-slip of stud connectors in literature, the constitutive relationship of shear-slip of shear stud connectors is proposed through curve fitting. Then the finite element model of the experimental CFDSPCW is established and validated through experimental results. Thereafter, the study presents the effects of key parameters, including the space of stud connectors, the thicknesses of steel plate and concrete core, the concrete strength and the span-depth ratio of walls, on the shear resistance of CFDSPCWs. The results indicate that the thickness of steel plate and concrete core, and the concrete strength are the most critical factors to affect the shear resistance of CFDSPCWs, and the space of stud connectors affects the failure mode of CFDSPCWs.