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分别对1榀加设防屈曲中心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和比较,考察防屈曲中心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。
The pseudo-static test of reinforced concrete frame with anti-buckling center support and anti-buckling support without anti-buckling support was carried out on 1 榀, respectively. The failure process, failure mechanism, load-side shift Back curve, skeleton curve, interlayer stiffness, energy dissipation and equivalent viscous damping ratio were analyzed and compared to investigate the effect of anti-buckling center support on the seismic performance of reinforced concrete frame. The results show that anti-buckling brace can effectively improve the seismic performance of reinforced concrete frame. The stiffness, bearing capacity, energy consumption and damping ratio of reinforced concrete frame with anti-buckling support increase significantly and have good seismic performance.