接缝形式对凹槽浆锚连接装配式混凝土剪力墙抗震性能影响研究

为研究不同接缝形式（水平接缝、竖向接缝、竖向和水平接缝）的凹槽浆锚连接预制混凝土剪力墙抗震性能，完成1片现浇剪力墙和3片不同接缝形式的预制剪力墙拟静力加载试验，分析了不同接缝形式对预制墙体破坏过程、破坏特征、滞回性能、承载力、延性等的影响。试验结果表明：4片墙体的破坏形式均为受弯破坏；水平接缝装配式剪力墙在峰值荷载前受力性能与现浇剪力墙基本相似，峰值荷载后随着水平接缝处结合面的开裂，水平接缝装配式剪力墙承载力和刚度退化较快；竖向接缝装配式剪力墙抗震性能总体上符合规范GB 50011—2010抗震要求，其延性略低于现浇剪力墙，且预制墙体竖向接缝的后浇部分利于结构的耗能；同时采用竖向和水平接缝装配式剪力墙的峰值荷载与竖向接缝剪力墙的基本一致，而极限位移较现浇剪力墙的低27%，其竖向接缝后浇部分的钢筋配筋率影响剪力墙的承载力。

Seismic performance of prefabricated concrete shear wall with fluted grouting and anchor joint

To investigate the seismic performance of prefabricated shear wall with different joints (horizontal joint, vertical joint, vertical and horizontal joint), one cast-in-place shear wall and three assembled shear walls with different joint forms were tested under quasi-static experiment. The failure process, failure characteristics, hysteretic performance, bearing capacity and ductility of prefabricated walls were clarified. The test results show that the failure mode of all four walls is bending failure; the mechanical behavior of the assembled shear wall with horizontal joint is basically similar to that of the cast-in-place wall before the peak load, and in the later stage it is cracked along with the joint surface of the horizontal joint, and the bearing capacity and stiffness of the assembled shear wall with horizontal joint degrade rapidly. In addition, the seismic performance of the prefabricated shear wall with vertical joint generally meets the seismic requirements, but its ductility is slightly lower than the cast-in-place wall, and the post-casting part of the vertical joint of the prefabricated wall is helpful to reduce the structural energy consumption. In the assembled shear wall with vertical and horizontal joint, the peak load of this is basically the same as that of the shear wall with vertical joint, while the ultimate displacement is 27% less than the cast-in-place wall, and the reinforcement ratio of the post-cast part of the vertical joint influences the ultimate load.