基于损伤指标和易损性曲线的圆形钢筋混凝土柱建模分析

Modeling Analysis of Circular Reinforced Concrete Column Based on Damage Index and Vulnerability Curve

为了解混凝土构件在地震等灾害工况下的整体损伤情况,针对圆形钢筋混凝土柱,建立非线性动力学分析模型,通过搭建结构试验体模型,对比理论分析与试验测试结果。在此基础上,建立了圆形钢筋混凝土柱体的损伤模型,基于Park-Ang损伤理论模型,给出圆形钢筋混凝土柱的地震损伤评估指标,并结合损伤指标进行试验体模型的易损性曲线的分析,根据圆形钢筋混凝土柱试体的易损伤曲线,可以很清晰看到不同的地面峰值加速度下,试体不同程度损伤的概率,有助于评估地震作用下,类似构件所造成的不同损伤程度和概率,从而进行对应结构的补强或经济效益补偿。

In order to understand the overall damage of concrete members under earthquake and other disasters,a nonlinear dynamic analysis model is established for circular reinforced concrete columns. At the same time, the structure test model is constructed and the theoretical analysis and test results are compared. Based on the Park-Ang damage model, the damage index of the circular reinforced concrete column is given, and the damage curve of the test specimen model is analyzed with the damage index. The damage model of the reinforced concrete column is established.,According to the circular reinforced concrete column test,you can clearly see the different ground peak acceleration, the test body to verify degrees of damage probability,which will help later assessment on the similar components in the earthquake caused by the different degree of damage and probability, so as to carry out the corresponding structure of the reinforcement or economic benefits compensation.