Research on Damage Mechanism and Structural Optimization of Joints in Cavity Shear Wall Structure

AbstractAfter pouring concrete precast cavity shell structure has been developing rapidly in recent years, compared with cast-in-place structure, the new fabricated structure has low cost, high construction efficiency, and the advantages of green environmental protection, the shear wall structure is most widely used, which includes the prefabricated plate shell, annular tendon layout, cast-in-situ construction important process. But by several times with the stress of the casting of concrete and the overall disposable pouring forms have obvious differences, including the layered interface, the material interface, the cross section of damage caused by the stiffness degradation, and eventually results in the decrease of carrying capacity. In this paper, the damage mechanism of precast shear wall with cavity is analyzed, and the optimization method of connecting parts is studied and discussed.