不同温度工况下钢筋混凝土偏压构件受力性能的对比试验研究  

Experimental Investigation on Behavior of Eccentrically Compressed Reinforced Concrete Members Heated on Three Faces Under Different Temperature Conditions

作　　者：孙劲峰[1] 李琰[1] 时旭东[1] 过镇海[1] 

机构地区：[1]清华大学土木工程系,北京100084

出　　处：《建筑结构学报》2001年第4期84-89,共6页Journal of Building Structures

基　　金：国家自然科学基金项目(59578033)资助。

摘　　要：本文对19根三面加温至800℃的钢筋混凝土压弯试件进行了高温时、恒温两小时后以及降温后三种温度工况的加载试验，分析了其受力性能的差别，包括试件的破坏特征、极限承载力和变形规律等。试验结果表明，试件高温时的力学性能比常温时严重恶化，恒温两小时又对试件的承载力明显削弱，降温后的试件受力性能则与高温时的差别较小。The eccentrically compressed reinforced concrete members heated on three faces are loaded in different conditions,namely the after heating, after two hours of high temperature maintenance and after cooling. The behavior, including failure patterns, ultimate load capacity and deformation have been investigated and analyzed. The test result shows that the members are damaged heavily under high temperature, but the behavior of the members after cooling are less different from that under high temperature, while the members loaded after two hours of high temperature maintenance are damaged much more seriously.

关 键 词：钢筋混凝土 压弯试件 极限承载力 变形 

分 类 号：TU375[建筑科学—结构工程]