骨料类型对钢筋混凝土柱高温后力学性能影响研究  

Study on the behavior of RC columns with different aggregate after high temperature

作　　者：周立欣[1] 袁广林[1] 贾文亮[1] 田露丹[1] 张倩茜[1] 

机构地区：[1]中国矿业大学力学与建筑工程学院,江苏徐州221008

出　　处：《混凝土》2011年第1期49-51,61,共4页Concrete

基　　金：国家自然科学基金(59978008)

摘　　要：对不同种类骨料钢筋混凝土柱经历不同温度,在自然冷却及大偏心加载情况下的力学性能进行了试验研究。结果表明:相同条件下硅质骨料混凝土柱的承载力比钙质骨料混凝土柱低,高温后硅质骨料混凝土柱的极限承载力下降速度约为钙质骨料混凝土柱的1.5倍;温度越高钢筋混凝土柱的变形越大,高温后硅质骨料混凝土柱的挠度和轴向变形增长速度分别为钙质骨料混凝土柱的1.05、1.07倍。这些研究成果为进一步研究混凝土结构的抗高温性能及其损伤评估提供了一定的参考。The performance of RC columns with different aggregate after high temperature were tested,and different temperature, cooled by radiation, Large decentration loading were considered.The result indicated that ultimate load bearing capacity of RC columns reduced gradually with temperature increasing,and column with siliceous aggregate dropped about 1.5 times faster;The result also indicated the performance of deforming reduced after the high temperature,and column with siliceous aggregate increased about 1.05,1.07 times faster.These results will provide references for further study of fire resistance behavior and the damage assessment of concrete structure.

关 键 词：高温 粗骨料 钢筋混凝土柱 受力性能 

分 类 号：TU528.01[建筑科学—建筑技术科学]