钢筋混凝土剪力墙构件双参数地震损伤模型研究

Study on Seismic Damage Model with Double Variables for Reinforced Concrete Shear Walls

为了研究剪力墙的地震损伤,在分析现有结构地震损伤模型的基础上,基于理想弹塑性结构的恢复力模型,提出一种改进的双参数地震损伤模型。依据实验数据,采用该模型对钢筋混凝土剪力墙结构在低周反复荷载作用下的变形与累积滞回耗能进行分析,确定模型参数。对剪力墙结构损伤中最大变形引起的损伤和累积滞回耗能引起的损伤进行了比较,结果表明最大变形引起的损伤在结构损伤中所占比例较大,但累积滞回耗能引起的损伤不能忽略。

In order to study the seismic damage of reinforced concrete shear walls,based on the analysis of the current seismic damage models,a modified model with double variables is presented by using an ideal elastoplastic restoring force model of structural members.Based on the test data,deformation and cumulative hysteretic dissipation energy are analyzed for reinforced concrete shear walls under low-cyclic loading test,the parameters in the modified model are determined.The comparison between the damage value due to the maximum deformation and that due to the cumulative hysteretic dissipation energy show that the damage value due to the maximum deformation is larger than that due to dissipation energy,however,the damage caused by the cumulative hysteretic dissipation energy can not be neglected.