装配式内藏钢桁架混凝土剪力墙抗震性能试验研究

为了提高装配式剪力墙的抗震性能,提出并设计了一片暗柱内置H型钢装配式内藏钢桁架混凝土剪力墙及一片暗柱内置圆钢管装配式内藏钢桁架混凝土剪力墙,其中H型钢竖向连接采用顶底角钢复合连接,圆钢管竖向连接采用端板焊接.通过对试件进行低周反复加载试验,得到剪力墙试件的破坏模式、滞回曲线、承载力、延性、残余变形、刚度退化和耗能能力等...

Experimental study on seismic behavior of precast concrete shear wall with concealed steel truss

To improve the seismic behavior of the precast RC shear wall,one precast steel truss RC shear wall with hidden column embedded with the H-shaped steel and one precast steel truss RC shear wall with hidden column embedded with the circular steel tube were proposed and designed.The vertical connection of the H-shaped steel adopted the top-and-seat angle composite connection.The vertical connection of the circular steel tube adopted end plate welding.Then the quasi-static tests of the two specimens were carried out.The failure modes,hysteretic curves,bearing capacities,ductility coefficients,residual deformations,stiffness degradation and energy dissipation capacities of the two specimens were obtained.The test results showed that the bearing capacity,ductility coefficient and energy dissipation capacity of precast steel truss RC shear wall with hidden column embedded with the H-shaped steel were better than those of the wall with hidden column embedded with the circular steel tube,and the vertical connection of the H-shaped steel in this paper was more reliable and had better ability to transfer stress at assembly joint than the vertical connection of the circular steel tube,which could guarantee the integrity of precast shear wall.