Analysis of seismic performance in semi-dry joint assembled prefabricated shear wall

Premanufactured and site-assembled buildings are widely used in engineering due to their high construction efficiency. However, there are still technical problems such as joint stress concentration and insufficient seismic performance in node connections. To solve the problem of joint connection in assembled shear walls, four new semi-dry connection methods are proposed. Through comparing and analysing their mechanical properties, the connection method with the best comprehensive performance is selected, providing a theoretical basis for engineering applications. Based on Abaqus finite-element software, four types of semi-dry connected assembled shear wall models are established under unified parameter conditions and compared and analysed with simulated cast-in-place composite shear walls. The results show that the specimens using the D-D connection method have optimal seismic performance, with ultimate bearing capacity comparable to cast-in-place specimens and good residual deformation capacity. As the aspect ratio increases, the displacement ductility coefficient of the specimen decreases. When the axial compression ratio exceeds a certain threshold, the degradation rate of structural stiffness significantly accelerates.