Seismic performance of cold-formed steel centre-sheathed shear wall: Simulation and theoretical prediction

A cold-formed steel center-sheathed shear wall (CFS-CSSW) is proposed in this study to promote the formation and utilization of the diagonal tension bands of steel sheets to improve the lateral performance of CFS shear walls. The energy method was adjusted and adopted to characterize the lateral stiffness of CFS-CSSWs, and strength prediction equations were proposed based on the mechanics of the materials. Consequently, the calculation results indicate that the proposed theoretical models have a relatively high accuracy. Subsequently, the finite element (FE) modeling of the wall was performed and compared with experiments and theoretical analysis results after the accurate simulation of the screw connection, and parametric analyses were conducted based on the verified FE models to further validate the applicability of the theoretical models and discuss the factors influencing the seismic performance of the wall.