预制外墙挂板-剪力墙结构抗震性能试验

Experiment on Seismic Behavior of Shear Wall Structures with Precast Exterior Cladding Panels

为研究预制外墙挂板对钢筋混凝土剪力墙结构抗震性能的影响,进行了6个单层双肢剪力墙足尺试件的拟静力试验.通过对比试件的受力过程和破坏形态,研究预制外墙挂板-剪力墙结构的受力机理和抗震性能、外墙挂板对剪力墙抗侧刚度的影响以及轴压比的不同是否会影响外墙挂板对剪力墙抗侧刚度的贡献作用,验证外墙挂板与剪力墙之间连接构造的合理性.研究结果表明:带有预制外墙挂板的剪力墙试件的承载力和延性均高于纯剪力墙试件;在一定范围内,轴压比越大,外墙挂板对剪力墙抗侧刚度的影响越小;外墙挂板与剪力墙之间的平面外连接是否可靠,有待进一步分析研究.

Quasi-static tests on six single-story coupled shear walls were conducted to study the effect of precast exterior cladding panels on reinforced concrete shear wall structures under earthquake.Based on a comparative study of load process and failure mode of the specimens,the mechanical performance and seismic behavior of shear wall structures with exterior cladding panels were researched.Then,the contribution of cladding panels to the lateral stiffness of shear walls and the impact of axial load on this contribution were obtained.The connections between cladding panels and shear walls were analyzed.The study shows that shear wall structures with exterior cladding panels had higher capacity and ductility.The influence of cladding walls on lateral stiffness of shear walls was less when the axial load applied was higher.More researches should be conducted to ensure that the connection between cladding panels and shear walls meets the requirements of seismic fortification criterion.