Abstract：Based on the experimental research, numerical simulation analysis of the precast concrete (PC) coupled shear wall with PC infill walls was conducted. Performance of the specimens with different connection methods and axial compression ratios were evaluated in terms of failure mode, bearing capacity, stiffness and ductility, and so on. The results show that the existence of PC infill wall can improve the bearing capacity and lateral stiffness. It is recommended that the periodic reduction factor is between 0.8 and 1.0 when the PC coupled shear walls and the PC infill walls are rigidly connected. As the axial compression ratio increases, the yielding and peak loads of specimen increase. When the axial compression ratio is less than 0.3, the lateral stiffness of the structure increases with the increasing of the axial compression ratio. However, when the axial compression ratio is greater than 0.3, the stiffness under rigid connection decreases with the increasing of the axial compression ratio, but the rigid connection specimen stiffness is basically unchanged. The ductility of the structure decreases with the increasing of the axial compression ratio, and the ductility coefficient of the rigid connection specimens decreases faster than the flexible connection specimens. It is recommended to strengthen the reinforcement of shear wall edge members when the axial compression ratio is greater than 0.3 in rigid connection.
