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防屈曲支撑是一种耗能性能良好、减震效果显著的新型支撑。分别对1榀加设防屈曲单斜支撑的钢筋混凝土框架和1榀未设置防屈曲支撑的钢筋混凝土框架进行拟静力试验研究,对两榀框架试件的破坏过程、破坏机理、荷载-侧移滞回曲线、骨架曲线、层间刚度、耗能和等效黏滞阻尼比等试验结果进行分析与比较,考察防屈曲单斜支撑对钢筋混凝土框架抗震性能的改善效果。研究结果表明:防屈曲支撑能有效提高钢筋混凝土框架抗震性能,加设防屈曲支撑的钢筋混凝土框架结构刚度、承载能力、耗能和阻尼比均显著增大,具有良好的抗震性能。
Anti-buckling support is a new energy-saving performance, significant new damping effect. The pseudo-static tests on reinforced concrete frame with anti-buckling monocline support and reinforced concrete frame with no anti-buckling support were carried out respectively. The failure process, failure mechanism, load-displacement Hysteresis curve, skeleton curve, interlayer stiffness, energy dissipation and equivalent viscous damping ratio were analyzed and compared to investigate the effect of anti-buckling monocline brace on the seismic performance of reinforced concrete frame. The results show that the buckling brace can effectively improve the seismic performance of the RC frame. The stiffness, bearing capacity, energy consumption and damping ratio of the RC frame with the buckling brace increase significantly and have good seismic performance.