【摘要】 通过对大量锈蚀RC框架柱抗震性能试验资料的统计分析,研究了锈蚀对RC柱骨架线影响的规律.采用三折线骨架曲线,并且给出特征点的计算方法;考虑往复荷载作用下强度退化及刚度退化效应,基于能量耗散原理,定义了退化指数,最终建立了能够反映强度和刚度退化的锈蚀RC柱恢复力模型.经验证表明:该模型能够较好地反映锈蚀RC柱的滞回特性,符合试验结果.更多还原

【Abstract】 The effect of the reinforcement corrosion on the backbone curve of the RC column was investigated based on the regression analysis of a large test samples.The parameters on tri-linear backbone curve were given,considering strength and stiffness degradation,and defined the degradation index based on energy dissipation;the restoring model of corroded RC column was established at last.The model can well reflect the hysteretic properties of corroded RC columns by comparing the theory and test value.更多还原