钢-混凝土试验模型结构地震损伤演化分析

Seismic Damage Evolution Analysis of Steel-Concrete Test Model Structure

为了研究地震作用下结构的损伤演化过程,对一3层钢-混凝土试验模型结构进行弹塑性分析.对经典Park-Ang双参数构件损伤模型进行了改进,并利用试验测试数据对损伤模型参数进行拟合.基于振动台试验测试数据对分析结果进行位移修正,并将修正后结果应用于改进模型中对结构进行损伤评估.结果表明,将修正后的结果应用到损伤模型中能够较好地反映结构的损伤程度,并能定量、连续地描述结构的损伤过程,可以对在地震作用下结构的构件和整个结构的抗震性能做出评估.

To research the damage process of structure due to earthquake,the elastic-plastic seismic analysis of a 3-story steel-concrete test model structure is conducted. The original Park-Ang two-parameter damage model for member is improved and the parameters of the improved model are fitted using test data. The displacement responses of numerical simulation are updated according to shaking table tests data,which are applied to the improved damage model to evaluate the damage process of structure. Results show that the improved damage model using the revised data can more accurately reflect the damage extent of structure,and quantitatively and continuously describe the damage process of structure as well as evaluate the seismic performance of structural members and global structure due to earthquakes.