摘要
对在不同受热温度、冷却方式和加载制度下钢筋混凝土黏结性能进行试验研究,分析了不同条件下钢筋混凝土的黏结-滑移曲线和极限黏结应力、极限滑移.钢筋混凝土试件的受热温度分别为250℃,450℃和650℃,冷却方式分为自然冷却和喷水冷却2种,加载方式考虑单向拉拔试验和循环往复加载.结果表明,受热温度、冷却方式和加载制度对高温后钢筋混凝土的黏结性能有很大影响.
The bond of rebar and concrete under different temperatures and different ways of cooling and loading was studied. The bond-slip curve, the ultimate bond stress, and the ultimate slip of reinforced concrete under different conditions were analyzed. During the experiments, the reinforced concrete specimens were heated at 250℃, 450℃, and 650℃, respectively, cooled in air and by water spraying, and subjected t o monotonic pull-oat loading and cyclic loading. The results show that the heating temperature and the ways of cooling and loading are of great influences on the bond performance of reinforced concrete.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
北大核心
2006年第3期290-294,共5页
Journal of Hohai University(Natural Sciences)
基金
国家自然科学基金资助项目(59978008)
江苏省博士后科研计划资助项目(B类)
关键词
钢筋混凝土
高温
黏结性能
冷却方式
加载制度
reinforced concrete
high temperature
bond performance
cooling way
loading system
