低周反复荷载下方钢管再生混凝土柱抗震性能试验研究  

Experimental study on seismic behavior of recycled-concrete-filled square steel tube columns under cyclic reversed loading

作　　者：孟二从 苏益声[1,2] 陈朋朋[1] 但宇 

机构地区：[1]广西大学土木建筑工程学院,广西南宁530004 [2]广西防灾减灾与工程安全重点试验室,广西南宁530004

出　　处：《广西大学学报（自然科学版）》2015年第4期790-797,共8页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(51468003);高等学校博士学科点专项科研基金联合资助项目(20134501110001);广西科学研究与技术开发项目(桂科转14124005-1-2);大学生创新创业训练计划项目(141059308)

摘　　要：为研究方钢管再生混凝土柱的抗震性能,以再生粗骨料取代率为变化参数,设计制作了4根不同取代率的试件,对其进行拟静力试验,研究分析其破坏形态、滞回曲线、骨架曲线、延性、耗能能力、刚度退化等力学性能指标。研究结果表明:方钢管再生混凝土柱的破坏形态与方钢管普通混凝土柱相似,均为柱脚的鼓曲破坏;随着再生骨料取代率的增大,试件的极限承载力会有所减小,但减小幅度不大;再生粗骨料取代率对试件的延性、耗能性能、刚度退化则没有明显的影响。In order to study the seismic behavior of recycled-aggregate-concrete-filled square steel tube columns, four specimens with different replacement rates were test under the cyclic reversed loading. The destruction pattern and hysteretic performance, the hysteretic curves, skeleton curve, ductility, energy dissipation and stiffness degradation were analyzed. Research findings indicate that the destruction mode of recycled-aggregate-concrete-filled square steel tube columns is similar to that of concrete-filled square steel tubular columns. With the increase of the replacement ratio, the ulti-mate bearing capacity and measured value of he will be reduced, but the reduction is very tiny. The replacement ratio of recycled aggregate has no obvious effect on the ductility, energy dissipation and stiffness degradation.

关 键 词：方钢管再生混凝土柱 抗震性能 取代率 

分 类 号：TU391[建筑科学—结构工程]