LAUSR

Abstract Composite steel plate shear wall (CSPSW) shows good mechanical performance because of the interaction between steel plate and concrete panel. While the concrete panel is prone to cracking and spalling under earthquake action, which leads to a loss of restraint on the steel plate. Substituting concrete with high ductile material like engineered cementitious composites (ECC) for the cover panels of CSPSW is proposed in this paper. Using ECC panels is expected to mitigate the damage of cover panels and provide stronger restraint to the steel plate. Nonlinear finite element analysis is performed to investigate the mechanical behavior of ECC panels restrained CSPSW. Compared with ordinary CSPSW, the yield range of steel plate and damage extension of cover panels for the CSPSW restrained by ECC panels significantly decrease. Besides, the CSPSW restrained by ECC panels shows larger lateral stiffness and shear capacity than ordinary CSPSW. Extensive parametric analysis is conducted to examine the effect of various parameters on the mechanical performance of CSPSW restrained by ECC panels, and the influential mechanism is also discussed in detail.