Seismic behavior and mechanism analysis of innovative precast shear wall involving vertical joints  

作　　者：孙建 邱洪兴 

机构地区：[1]Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education (Southeast University)

出　　处：《Journal of Central South University》2015年第4期1536-1547,共12页中南大学学报（英文版）

基　　金：Project(51078077)supported by the National Natural Science Foundation of China

摘　　要：To study the seismic performance and load-transferring mechanism of an innovative precast shear wall(IPSW) involving vertical joints, an experimental investigation and theoretical analysis were successively conducted on two test walls. The test results confirm the feasibility of the novel joints as well as the favorable seismic performance of the walls, even though certain optimization measures should be taken to improve the ductility. The load-transferring mechanism subsequently is theoretically investigated based on the experimental study. The theoretical results show the load-transferring route of the novel joints is concise and definite. During the elastic stage, the vertical shear stress in the connecting steel frame(CSF) distributes uniformly; and each high-strength bolt(HSB)primarily delivers vertical shear force. However, the stress in the CSF redistributes when the walls develop into the elastic-plastic stage. At the ultimate state, the vertical shear stress and horizontal normal stress in the CSF distribute linearly; and the HSBs at both ends of the CSF transfer the maximum shear forces.To study the seismic performance and load-transferring mechanism of an innovative precast shear wall（IPSW） involving vertical joints, an experimental investigation and theoretical analysis were successively conducted on two test walls. The test results confirm the feasibility of the novel joints as well as the favorable seismic performance of the walls, even though certain optimization measures should be taken to improve the ductility. The load-transferring mechanism subsequently is theoretically investigated based on the experimental study. The theoretical results show the load-transferring route of the novel joints is concise and definite. During the elastic stage, the vertical shear stress in the connecting steel frame（CSF） distributes uniformly; and each high-strength bolt（HSB）primarily delivers vertical shear force. However, the stress in the CSF redistributes when the walls develop into the elastic-plastic stage. At the ultimate state, the vertical shear stress and horizontal normal stress in the CSF distribute linearly; and the HSBs at both ends of the CSF transfer the maximum shear forces.

关 键 词：precast shear wall vertical joint seismic behavior high-strength bolt connecting steel frame 

分 类 号：TU398.2[建筑科学—结构工程] TU352.11