高温后不同骨料RC边节点反复载荷下的试验研究  

Experimental study on behaviors of RC joints with different aggregates under cyclic loading after high temperature

作　　者：梁爱莉[1] 田露丹[2] 袁广林[2] 董亚男[3] 

机构地区：[1]徐州工程学院土木学院,江苏徐州221008 [2]中国矿业大学力学与建筑工程学院,江苏徐州221008 [3]北京城建设计研究总院有限责任公司青岛分院,山东青岛266000

出　　处：《辽宁工程技术大学学报（自然科学版）》2010年第6期1070-1073,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金资助项目(59978008)

摘　　要：为研究高温和骨料类型对钢筋混凝土边节点抗震性能的影响,分别针对硅质和钙质两种不同骨料的RC边节点进行了高温后的低周反复载荷试验,分析了高温后硅质和钙质骨料RC边节点在低周反复载荷作用下的承载能力、破坏形态、延性指标和耗能能力的变化规律。结果表明:相对于钙质骨料混凝土边节点,硅质骨料的承载力退化较少,梁柱相对转角偏小,高温核心区剪切变形较小,证实硅质骨料混凝土边节点有更好的弹塑性性能、耗能能力及抗震性能。The effects of high temperature on seismic behaviour of RC joints were investigated using the low cyclic reversed loading tests on reinforced concrete joints with two different coarse aggregates at different temperatures.The failure models,mechanical behaviours,ductility index and energy dissipation capacity of the specimens were obtained from the study.The results showed that the siliceous aggregate improves the plastic deformation,energy dissipation capacity and seismic behaviour of the joints comparing to the calcareous aggregate joints.

关 键 词：高温 骨料 边节点 低周反复载荷 抗震性能 

分 类 号：TU528[建筑科学—建筑技术科学]