碳纤维布改善高强混凝土柱延性的试验研究  

Experimental study on the application of continuous carbon fiber sheet to improve the ductility of high-strength concrete columns

作　　者：赵彤[1] 刘明国[1] 谢剑[1] 张晨军[1] 

机构地区：[1]天津大学土木工程系,天津300072

出　　处：《地震工程与工程振动》2001年第4期46-52,共7页Earthquake Engineering and Engineering Dynamics

基　　金：国际合作研究项目(日本文部省;No.10045055);天津市青年科学基金(No;993702011)

摘　　要：本文进行了８根高强混凝土柱在低周反复荷载作用下的试验，研究了使用碳纤维布横向包裹高强混凝土柱来提高其延性这种加固方法的有效性。本文研究了碳纤维布横向包裹高强混凝土柱的受力特性，分析了加荷角度、碳纤维布拉伸强度以及碳纤维布的包裹层数等因素对构件抗震加固效果的影响，并对碳纤维布加固高强混凝土柱使其延性提高的机理进行了探讨。试验结果表明，横向缠裹碳纤维布可显著提高高强混凝土柱的延性。Eight high-strength concrete columns under cyclic loading were tested. The effectiveness of the new method of using the continuous carbon fiber sheet(CFS) on strengthening the high-strength concrete columns for increasing their ductility is studied. The factors affecting the ductility of the specimens such as the loading angle, the number of CFS layers and tensile strength of CFS were an alyzed. The confinement mechanism of CFS to high - strength concrete columns was also proposed. The experimental results indicate that the ductility of the high - strength concrete columns is improved remarkably.

关 键 词：高强混凝土柱 碳纤维布 延性 抗震效果 加固效果 包裹层数 

分 类 号：TU375.3[建筑科学—结构工程]