【摘要】 进行了现浇钢筋混凝土植筋边节点在不同受热温度(常温、植筋后焊接、200和300℃)后的低周反复荷载试验,分析了高温后钢筋混凝土植筋边节点构件在低周反复荷载作用下的破坏形态和恢复力特征,探讨了高温对钢筋混凝土植筋边节点抗震性能的影响.结果表明,植筋节点在正常使用情况下满足承载力要求,在常温情况下具有良好的耗能能力;焊接位置距离结构胶表面100 mm时,节点植筋试件的强度退化明显,承载力比未受热构件有明显降低.高温(火灾)对植筋节点的耗能性能存在明显影响,在受热200℃以上时,构件的耗能能力会有很大损失.更多还原

【Abstract】 Low frequency cyclic loading tests of reinforced concrete(RC) exterior joints with post-embedded bars were performed after treatment at high temperature.The failure modes and restoring force of the specimens are described and the effects of high temperatures on the seismic behaviour of RC exterior joints with post-embedded bars were studied.The results show that the energy dissipation capacity of a RC joint with post-embedded bars in a normal environment is quite good and that the joint exceeds the carrying capacity.When the distance from the weldment to the structural glue is less than 100 mm specimens show degraded strength and the carrying capacity is greatly reduced.High temperature can reduce the energy dissipation capacity of RC joints with post-embedded bars.The energy dissipation capacity of the joints drops significantly when the temperature exceeds 200 ℃.更多还原