型钢混凝土异形柱损伤模型研究  

Research on damage model of steel reinforced concrete special-shaped columns

作　　者：刘平[1,2] 王泽桐 张健新 LIU Ping;WANG Zetong;ZHANG Jianxin(School of Civil Engineering,Hebei University of Technology,Tianjin 300401,China;Civil Engineering Technology Research Center of Hebei Province,Tianjin 300401,China)

机构地区：[1]河北工业大学土木工程学院,天津300401 [2]河北省土木工程技术研究中心,天津300401

出　　处：《武汉大学学报（工学版）》2022年第11期1129-1134,共6页Engineering Journal of Wuhan University

基　　金：河北省自然科学基金项目(编号:E2018202290,E2017202278);天津市建委科技项目(编号:2016-8)。

摘　　要：基于4个混凝土异形柱的低周反复荷载试验,分析了试件各个阶段的损伤特征,选取基于能量的损伤模型、Park-Ang损伤模型和改进Park-Ang模型进行了对比研究,结果表明:钢筋混凝土异形柱内置型钢可以延缓损伤破坏并降低试件最终损伤程度;基于能量耗散损伤模型和Park-Ang损伤模型对试件损伤程度的预估存在一定的缺陷,而基于有效耗能的改进Park-Ang模型能够较好地预估异形柱的损伤程度,为结构设计提供可靠的损伤指数。对其他文献中试件的改进Park-Ang损伤模型进行了验证研究,结果表明其预估型钢混凝土异形柱的损伤效果较好。Based on the low-cycle repeated load test of four concrete special-shaped columns,the damage characteristics of the specimens at each stage were analyzed.The energy-based damage model,Park-Ang damage model and improved Park-Ang model were selected for comparative study.The results show that reinforced concrete shaped columns can delay damage and reduce the final damage of the specimens through the built-in shaped steel.There are certain defects in the prediction of the damage degree of the specimens based on the energy dissipation damage model and the Park-Ang damage model.But the improved Park-Ang model based on effective energy consumption can better predict the damage degree of special-shaped columns and provide a reliable damage index for structural design.Based on this,the experimental specimens of other literatures are collected to verify the improved Park-Ang damage model,and it is found that the improved ParkAng damage model can better predict the damage effect of the steel-reinforced concrete special-shaped columns.

关 键 词：异形柱 型钢增强 抗震性能 损伤模型 

分 类 号：TU375.3[建筑科学—结构工程]