带暗支撑预制叠合剪力墙抗震性能试验研究

Experimental Study on Seismic Behavior of Precast Composite Shear Wall with Concealed Bracing

为了从构造上进一步优化预制叠合剪力墙的连接,分别设计了1片普通局部高阻尼混凝土预制叠合剪力墙和1片带钢板暗支撑的局部高阻尼混凝土预制叠合剪力墙,进行了拟静力试验研究,分析了试件在水平低周往复荷载作用下的承载能力、滞回曲线、骨架曲线、位移延性、刚度退化以及耗能性能.对比研究了试件的裂缝发展情况以及破坏形态.研究结果表明:塑性铰区采用局部高阻尼混凝土和内置钢板暗支撑的预制叠合剪力墙均能表现出较好的抗震性能,连接构造合理,且钢板暗支撑的引入在提高预制叠合剪力墙承载能力的同时也提高其延性.

In order to optimize the connection of precast composite shear wall, two local high damping concrete precast composite shear walls with or without concealed steel plate bracing were designed. Quasistatic tests of two specimens were carried out, and the bearing capacity, hysteretic curves, skeleton curves, displacement ductility, stiffness degradation, energy-dissipation performance, crack development and failure pattern were obtained, and compared with each other. The test results indicate that the test specimens exhibit great seismic structural behaviors, and the use of concealed steel plate bracing can improve the bearing capacity, deformation ability as well as its ductility of precast composite shear wall.