FRP筋增强混凝土压弯构件最小配筋率的讨论  

Discussion on Minimum Reinforcement Ratio of Compressive and Flexural Concrete Members Reinforced with FRP Tendons

作　　者：龚永智[1] 张继文[2] 

机构地区：[1]中南大学土木建筑学院,长沙410075 [2]东南大学土木工程学院 长沙,南京210096

出　　处：《武汉理工大学学报》2008年第2期53-57,共5页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(50238030)

摘　　要：分析了FRP筋混凝土压弯构件发生受拉破坏时混凝土的等效应力图,依据钢筋混凝土结构最小配筋率的定义,给出了FRP筋混凝土压弯构件的最小配筋率。通过对拉、压破坏的界限状态的分析,给出了FRP筋混凝土压弯构件的界限配筋率,并对其影响参数进行了分析。建议设计中用界限配筋率作为CFRP筋混凝土压弯构件配筋率的限制。The equivalent stress diagram of concrete was discussed,when the failure mode of tension destruction occurred.Based the definition of the minimum reinforcement ratio of the reinforced concrete column,the minimum reinforcement ratio of the compressive and flexural concrete members reinforced with FRP tendons was introduced.According to the analysis results about the boundary point of the failure mode of tension and compression,the limit reinforcement ratio of the compressive and flexural concrete members rei...

关 键 词：FRP筋 混凝土压弯构件 最小配筋率 界限配筋率 

分 类 号：TU377[建筑科学—结构工程]