【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.更多还原

【Abstract】 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-out 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.更多还原