摘要
通过18个钢管再生混凝土柱试件高温后的偏心受压加载试验,获取了各试件的力学性能指标,并重点分析了历经温度和再生粗骨料取代率对高温后圆与方钢管再生混凝土偏压柱力学性能退化的影响规律。结果表明:随历经温度和再生骨料取代率的提高,圆与方钢管试件的极限荷载、峰点变形、位移延性系数和耗能系数的变化规律大致相当,但温度对圆钢管的影响较方钢管显著;而取代率对方钢管的影响较圆钢管显著。
Eccentric compression loading test was carried out on 18 recycled aggregate concrete filled steel tube columns after being subjected to high temperature. The mechanical indexes were gotten. The effect of temperature and recycled aggregate replacement ratio on the mechanical performance degradation of circular and square steel tube recycled concrete columns after high temperature was analyzed. The results showed that with the increase of temperature and recycled aggregate replacement ratio, the changes of ultimate load, peak point deformation, ductility and energy dissipation of circular and square specimens were approximately the same;the effect of temperature on circular specimens was larger than that on square ones; the effect of recycled aggregate replacement ratio on square specimens was larger than that on circular ones.
作者
陈宗平
梁厚燃
王成
CHEN Zong-ping;LIANG Hou-ran;WANG Cheng(College of Civil Engineering and Architecture,Guangxi University,Guangxi Nanning 530004,China;Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education,Guangxi University,Guangxi Nanning 530004,China)
出处
《消防科学与技术》
CAS
北大核心
2018年第4期435-439,共5页
Fire Science and Technology
基金
国家自然科学基金项目(51578163)
广西自然科学基金重点项目(2016GXNSFDA380032)
广西高等学校高水平创新团队
卓越学者计划资助项目(桂教人[2017]38号)
关键词
钢管再生混凝土
高温
取代率
力学性能
recycled aggregate concrete filled steel tube
high temperature
replacement percentage
mechanical behavior
作者简介
陈宗平（1975-）,男,广西玉林人,广西大学土木建筑工程学院教授,博士生导师,博士,主要从事钢-混凝土组合结构、再生混凝土结构、工程防灾减灾等研究,广西壮族自治区南宁市大学东路100号,530004.
