Seismic Performance of Precast Shear Walls Connected by High-strength Threaded Rods

This paper investigates the seismic performance of precast shear walls (PSWs) connected by high-strength threaded rods (HSTRs). Two full-scale shear wall specimens were subjected to cyclic hysteresis loading tests, including one cast-in-place shear wall and one PSW connected by HSTRs. The research demonstrates that the PSW connected by HSTRs exhibits similar load-carrying capacity and energy dissipation capability compared to the cast-in-place shear wall. In addition, a finite element parameter analysis was conducted on the PSWs connected by HSTRs to investigate the influence of the connections in the middle region and the aspect ratio on the shear walls. The results indicate that after the connection in the middle area of the shear wall is removed, the structure's bearing capacity decreases by 8.33%, and its ductility decreases by 19.9%. Increasing the aspect ratio of the PSWs connected by HSTRs decreases load-carrying capacity but increases their ductility. As the shear wall's aspect ratio increases from 1.28 to 2.00, load capacity drops 22.8%, but ductility rises 16.5%. Finally, a calculation method for the lateral bearing capacity of PSWs connected by HSTRs is proposed, providing a basis for the design of this novel PSW.