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为了研究钢筋混凝土柱-钢梁混合结构边节点的损伤模型,对比了常用的修正的Park-Ang模型和基于刚度的非累积损伤指数模型,设计了钢筋混凝土柱-钢梁混合结构边节点组合件,通过低周反复荷载试验进行地震损伤研究。结合试验结果,对钢筋混凝土柱-钢梁混合结构边节点的损伤模型进行了对比分析。研究表明,以钢梁弯曲破坏为主的钢筋混凝土柱-钢梁混合结构边节点基于刚度的非累积损伤指数模型模拟结果与试验结果符合较好;当滞回耗能因子β取0.05时,修正的Park-Ang模型也能较好地评价节点试件的损伤情况。
In order to study the damage model of reinforced concrete column-steel beam mixed structure edge node, the commonly used modified Park-Ang model and non-cumulative damage index model based on stiffness are contrasted, and the reinforced concrete column-steel beam mixed structure edge node assembly , Seismic damage study by low cycle repeated load test. Combined with the test results, the damage model of reinforced concrete column-steel beam hybrid structure is compared and analyzed. The results show that the non-cumulative damage index model based on the stiffness of the reinforced concrete column-steel beam hybrid structure with the bending failure of the steel beam is in good agreement with the experimental results. When hysteresis dissipation factor β is 0.05, Park-Ang model can also better evaluate the damage of the node specimen.