Study on Seismic Performance of Precast Shear Wall Structure Connected by Sleeve and Threaded Rod Connectors

Two precast shear walls connected by sleeve and high-strength threaded rod connectors and a precast shear wall connected by grouting sleeves were tested under cyclic loading. The results show that, compared with the precast shear wall connected by the grouting sleeve, the ductility of the new type of shear wall increased by 16.7%, the energy dissipation capacity decreased by 3%, and the bearing capacity and stiffness degradation ability were similar. A finite element parameter analysis was conducted, studying the effects of the axial compression ratio and shear span ratio on the performance of the new type of precast shear wall. The results show that as the axial compression ratio increased from 0.1 to 0.3, the bearing capacity increased by 21.8%, and the peak load displacement decreased by 36.1%. As the shear span ratio increased from 1.09 to 1.82, the failure mode of the specimen showed a trend of changing from shear-compression failure to bending failure. In addition, based on the experimental results and simulation results, a calculation formula for the lateral bearing capacity of shear walls has been proposed, providing a basis for the design of new types of shear walls.