钢筋混凝土结构的地震损伤分析及能量参数模型

Analysis of seismic damage to reinforced concrete structures and energy parameter model

本文简要评述了现有钢筋混凝土结构地震损伤分析的途径、方法及其合理应用。根据构件的滞回恢复力骨架曲线及卸载刚度退化规律,本文构造一个与构件地震损伤相关的能量参数,并据此提出一种构件地震损伤模型,该模型不显含组合系数α及β,计算较为简便。最后,根据Park and Ang模型导出构件滞回恢复力模型中反向加载曲线的超前指向距离,使构件的滞回恢复力变化描述与构件的地震损伤演化描述具有一致性。

This paper reviews briefly the existing analysis methods of seismic damage to reinforced concrete structure,and expatiates on its reasonable application.According to the skeleton curve of hysteretic restoring force and the degradation rules of unloading stiffness of components,we construct an energy parameter,which is related to the seismic damage to components,and propose a seismic damage model for components,the model does not obviously contain the combination coefficients α and β and is easy to be calculated.Finally,base on Park and Ang model,we deduce the point at the leading distance on the reverse loading curve for hysteretic restoring force model,so as to make the description of the changing of hysteretic restoring force consistent with the description of the seismic damage evolution of the components.