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根据4个按延性需求设计的高性能混凝土剪力墙的试验结果,分析了轴压比、约束箍筋数量及范围等因素对高性能混凝土剪力墙的延性、耗能能力和破坏形态的影响,分析了分段约束箍筋对剪力墙截面的约束机理。研究结果表明,分段约束高强箍筋能有效增大高性能混凝土剪力墙截面的约束效果,根据轴压比和位移延性需求确定的分段约束箍筋数量和范围,可以明显改善高性能混凝土的脆性,使高性能混凝土剪力墙的延性指标达到设计要求。
According to the test results of four high performance concrete shear walls designed according to ductility requirements, the influences of axial compression ratio, the number and scope of restraining stirrups on the ductility, energy dissipation capacity and failure morphology of high performance concrete shear walls are analyzed The constraint mechanism of the sectionally restrained stirrup on the shear wall section was analyzed. The results show that the restraining effect of HSS stirrup can effectively increase the restraint effect of HPC shear wall. According to the requirement of axial compression ratio and displacement ductility, the number and scope of confined restraining stirrups can obviously improve the performance of HPC Brittle, so that the ductility index of high-performance concrete shear wall to meet the design requirements.