新型配筋齿槽装配式剪力墙抗震性能试验研究

Experimental study on seismic performance of new reinforced tenon joint precast shear wall

为提高装配式剪力墙的抗震性能,采用配筋齿槽对装配式拼缝进行加强,通过配筋齿槽抵抗拼缝剪切力,纵向连接钢筋承受拉压应力并屈服耗能。为探究配筋齿槽装配式剪力墙的抗震性能,对1片配筋齿槽装配式剪力墙和1片普通平缝装配式剪力墙试件进行拟静力试验。研究了配筋齿槽装配式剪力墙的破坏模式、开裂形态以及拼缝面的滑移情况,分析了承载力、刚度退化、延性性能和耗能能力等抗震性能参数。试验测试结果表明:配筋齿槽能够有效减小装配式拼缝面的滑移,其破坏形态与普通装配式剪力墙试件相似,裂缝分布均匀且破坏充分,拥有较好的延性以及耗能能力。

In order to improve the seismic performance of the precast shear wall,the reinforced tenon is invented to strengthen the assembled joint,which can resists the shear force of the joint,and the longitudinal connecting steel bars is used to bears tensile and compressive stress and consume seismic energy.In order to study the seismic performance of reinforced tenon precast shear wall,quasi-static tests were performed on 1 reinforced tenon precast specimen and 1 ordinary flat seam precast specimen.The failure modes,slip of the joint surface and cracking forms of the reinforced tenon precast shear walls were studied,and the seismic performance parameters such as bearing capacity,stiffness degradation,ductility performance and energy dissipation capacity were analyzed.The test results show that the reinforced tenon can effectively reduce the slip of the joint surface,and the failure mode is similar to that of the ordinary flat seam specimen,the crack distribution is uniform,and has good ductility and energy dissipation capacity.