预制钢筋混凝土剪力墙结构拟动力子结构试验研究

Pseudo-dynamic substructure test on precast reinforced concrete shear wall structure

在预制钢筋混凝土剪力墙结构拟静力试验研究的基础上,采用等效力控制方法对足尺试验模型进行了拟动力子结构试验,研究该结构在地震作用下的破坏过程和变形能力,获得了模型下降段试验数据,给出了结构各层的位移时程曲线、层间滞回曲线、骨架曲线、刚度退化曲线以及延性等,为该类结构在地震作用下的弹塑性分析提供了试验数据。试验结果表明:采用的水平连接技术是可靠的,能够很好地保证其在地震作用下连接性能;该结构模型属于延性结构,可以满足我国现行抗震设计规范7度设防区多道抗震设防的要求,符合"三水准"抗震设防目标,具有较好的整体抗震性能,经过合理设计可以在地震设防区使用。

Based on the quasi-static test of the precast reinforced concrete shear wall structure,a systematic pseudo-dynamic substructure test using the equivalent force control method was conducted to study the failure process and deformation capacity of the full-scale model under simulated earthquake action.The test data of the descending segment of the shear-displacement curve was obtained.Then this paper gives the displacement time history curve,hysteretic curve,skeleton curve,stiffness degradation curve and ductility.The test results provide the test data for the elasto-plastic analysis under earthquake action.The test results show that the adopted connection technology is reliable to ensure the connection performance under earthquake action.Moreover,the precast reinforced concrete shear wall structure has good ductility and good seismic performance and can satisfy the design requirements of the Chinese code for seven degree of seismic fortification intensity.It can fulfill is the ＂three level＂ seismic fortification objectives.The proposed structure can be used in earthquake zones with reasonable design.