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为了研究配置HRB500钢筋的混凝土异形柱的抗震性能,进行了六个不同轴压比、配箍率的配置HRB500钢筋的混凝土异形柱试件低周往复加载试验,对比分析了试件的滞回曲线,根据滞回曲线得出试件的骨架曲线和刚度退化曲线,对各试件的承载能力、位移及延性和耗能能力进行了分析,研究了轴压比和配箍率的参数变化对配置HRB500钢筋的混凝土异形柱滞回性能的影响。研究结果表明:减小轴压比和增加配箍率,可以提高试件的变形能力及延性,改善试件的滞回特性。研究结果为配置HRB500钢筋的混凝土异形柱结构设计提供了参考。
In order to study the seismic performance of concrete special-shaped columns with HRB500 rebar, six different axial compression ratios and stirrup ratios of RCBs with HRB500 reinforced concrete columns were tested under low cyclic loading. The hysteresis Curve, and according to the hysteresis curve, the skeleton curve and stiffness degradation curve of the specimen were obtained. The bearing capacity, displacement and ductility and energy dissipation capacity of each specimen were analyzed. The change of parameters of axial compression ratio and stirrup ratio Effect of HRB500 Reinforced Concrete Hysteresis on Concrete. The results show that reducing the axial compression ratio and increasing the stirrup ratio can improve the deformation capacity and ductility of the specimens and improve the hysteretic characteristics of the specimens. The results provide a reference for the design of concrete special-shaped columns with HRB500 reinforcement.