摘要
依据《再生混凝土结构技术标准》(JGJ/T 443—2018),按照再生粗骨料(RCA)掺入量0%、50%和100%制作18个试件并进行轴压力学性能试验,研究RCA取代率对圆钢管约束再生混凝土(RACCST)试件承载力和应力-应变关系的影响。结果表明:RACCST试件轴压极限荷载随RCA取代率增加而略有下降,基于Mander模型和试验数据,给出建议的RACCST应力-应变关系表达式。
made according to the mixing amount of recycled coarse aggregate(0%,50% and 100%). The axial compression performance test was carried out to study the influence of recycled coarse aggregate(RCA)replacement ratio on the bearing capacity and stress-strain relationship of the recycled aggregate concrete confined by the circular steel tube(RACCST).The results show that the ultimate load of RACCST decreased slightly with the increase of RCA replacement ratio. Based on the Mander model and test data,a modified stress-strain relationship of RACCST was analyzed by comparing to the existing models for confined concrete.
作者
李雪鹏
胡忠君
金丽娜
曾会淋
LI Xuepeng;HU Zhongjun;JIN Lina;ZENG Huilin(College of Construction Engineering,Jilin University,Changchun 130026,China)
出处
《结构工程师》
2022年第1期150-155,共6页
Structural Engineers
基金
国家自然科学基金青年基金(41702300)。
关键词
圆钢管约束再生混凝土
再生粗骨料取代率
轴压试验
应力-应变关系
recycled aggregate concrete confined by circular steel tube
replacement ratio of recycled coarse aggregate
axial compression test
stress-strain relationship
