摘要
根据6根方钢管再生混凝土柱在定常轴力和水平往复荷载作用下的试验结果,探讨了钢管壁厚、轴压比和长细比3个参数对试件滞回性能的影响。试验表明:各试件的滞回曲线形状大致相同,滞回曲线较为饱满,具有良好的抗震性能。在试验研究基础上,分析了实测滞回曲线特征,对试验结果进行回归分析,建立了恢复力模型的三折线骨架曲线方程,确定了卸载刚度、强度退化规律和恢复力模型的滞回规则,建立了方钢管再生混凝土柱水平侧向力-位移恢复力模型,试件的计算滞回曲线和骨架曲线与试验实测曲线吻合良好。
Based on experimental results of 6 square recycled aggregate concrete filled steel tubular columns subjected to constant axial load and cyclic lateral load,the effects of parameters such as thickness of steel tube,axial load ratio and slenderness ratio on the hysteretic characteristics of specimens were investigated.The results showed that the hysteretic curves of all specimens were approximately same and the hysteresis curves were relatively plump,indicating that all specimens had good seismic behavior.On the basis of experimental research,the characteristics of experimental hysteresis curves were analyzed,and the regression analysis of test results was carried out.The Trilinear skeleton curve equation of restoring force model was established,and the unloading stiffness,strength degradation rule and hysteretic rule of restoring force model were determined,thus a restoring force model for lateral load-displacement relationship of square recycled aggregate concrete filled steel tubular columns was proposed.The calculated skeleton curves and hysteresis curves of the specimens were in good agreement with the experimental curves.
作者
王成刚
梁恒斌
吴景春
曹墨研
王静峰
柳炳康
WANG Chenggang;LIANG Hengbin;WU Jingchun;CAO Moyan;WANG Jingfeng;LIU Bingkang(School of Civil Engineering,Hefei University of Technology,Hefei 230009,China;Anhui Civil Engineering Structures and Materials Laboratory,Hefei 230009,China;Huahui Construction Group Co.Ltd,Shengzhou 312400,China)
出处
《工业建筑》
CSCD
北大核心
2019年第2期135-142,共8页
Industrial Construction
基金
住房和城乡建设部科学技术计划资助项目(2013-K4-46)
安徽省住房和城乡建设科学技术计划项目(2016YF-12)
关键词
方钢管再生混凝土柱
滞回特性
恢复力模型
square recycled aggregate concrete filled steel tubular columns
hysteresis characteristic
restoring force model
