反复荷载下圆钢管型钢再生混凝土组合柱地震损伤模型研究  

Seismic damage model of circular steel tubular steel recycled concretecomposite column under repeated loading

作　　者：马辉[1,2] 李智超 陈云冲 赵艳丽 MA Hui;LI Zhichao;CHEN Yunchong;ZHAO Yanli(State Key Laboratory of Eco-hydraulics in Northwest Arid Region,Xi’an University of Technology,Xi’an 710048,China;School of Civil Engineering and Architecture,Xi’an University of Technology,Xi’an 710048,China;Research and Design Institute of Water Conservancy and Hydropower,Xi’an University of Technology,Xi’an 710048,China)

机构地区：[1]西安理工大学省部共建西北旱区生态水利国家重点实验室,陕西西安710048 [2]西安理工大学土木建筑工程学院,陕西西安710048 [3]西安理工大学水利水电土木建筑研究设计院,陕西西安710048

出　　处：《自然灾害学报》2023年第6期151-161,共11页Journal of Natural Disasters

基　　金：国家自然科学基金项目(51408485);陕西省自然科学基础研究计划项目(2022JM-258)。

摘　　要：为研究圆钢管型钢再生混凝土组合柱的地震损伤性能,对11根组合柱试件进行了低周反复荷载试验,分析了再生骨料取代率、轴压比、管径径厚比、型钢配钢率及型钢截面形式等对组合柱地震损伤性能的影响规律;通过数值反演法确定了再生骨料取代率和轴压比影响的组合系数,综合考虑了变形和能量的影响,对Park-Ang损伤模型进行了修正,建立了圆钢管型钢再生混凝土组合柱的地震损伤模型,并验证了损伤模型的有效性。基于试验研究,将组合柱划分为正常使用、暂时使用、修复后使用、生命安全和防止倒塌等5个性态水平,结合性态水平对损伤指标进行量化,建立了组合柱在不同抗震性态水平下相应的量化指标、损坏程度和损伤指标区,为抗震性能设计提供参考。In order to study the seismic damage performance of circular steel tubular steel recycled concrete composite columns,11 composite columns were tested under low cycle repeated loading,and the effects of recycled aggregate replacement rate,axial compression ratio,diameter thickness ratio,section steel ratio and section steel form on the seismic damage performance of composite columns were also analyzed.The combined coefficient on the effects of recycled aggregate replacement rates and axial compression ratio was determined by numerical inversion method,the effects of deformation and energy were comprehensively considered,the Park-Ang damage model was revised,and the recycled concrete of circular steel tube section steel was established.The seismic damage model of the composite column and its validity are verified.Based on the experimental study,the composite column was divided into five personality levels:normal use,temporary use,use after repair,life safety,and collapse prevention.The damage indicators were quantified by combining the behavior levels,and the corresponding quantitative index,damage degree and damage index area of composite columns under different seismic performance levels are established to provide reference for seismic performance design.

关 键 词：型钢再生混凝土 钢管再生混凝土柱 低周反复荷载 地震损伤性能 损伤量化指标 

分 类 号：TU398[建筑科学—结构工程]