Abstract: A precast hollow insulated shear wall that employs a monolithic multicavity configuration for thermal insulation and tapered grouted sleeves to join precast components is proposed. Based on the results of pseudostatic testing, a precise model of a precast hollow insulated wall was established by using the finite element software ABAQUS. The numerical simulation results were in good agreement with the experimental results, and a parametric study of the seismic performance of the shear walls was performed. The results show that hollow cavities in the edge members have a significant effect on the mechanical properties of prefabricated hollow-insulated shear walls. Without hollow cavities in the edge members, the local crushing failure of the hollow insulated walls as well as the deformation capacity, ductility, energy dissipation capacity, and stiffness of the wall piers can be improved. The ductility coefficient of the specimens without hollow parts exceeded 4, and the ultimate drift angle increased by more than 20%. Increasing the reinforcement ratio of the edge members significantly improved the bearing capacity, stiffness, and energy dissipation capacity of the shear walls; however, the deformation capacity and ductility decreased.

Key words: precast shear wall, numerical analysis, seismic behavior, parametric analysis, grouted sleeve