摘要
针对普通外贴纤维增强聚合物(Fiber-Reinforced Polymer,以下简称FRP)片材加固混凝土受弯构件加固材料强度利用率低、构件正常使用阶段性能改善不明显等不足,预应力FRP加固法开始受到关注。文中首先给出了三种对纤维片材施加预应力的方法,然后分别对预应力连续纤维片材加固RC构件弯曲性能、预应力片材加固后的剪切性能及加固梁的疲劳性能等方面的研究现状进行了分类说明,给出了现有研究的方法、内容和取得成果及尚未开展的方向,供今后预应力纤维片材加固研究参考。
According to the weakness of reinforced concrete members extemaUy bonded by FRP sheets, research of RC flexural members strenthened with prestressed FRP is becoming a hot spot. This paper presents three sorts of strengthening methods of externally prestressed FRP based on the pretressing measure. Summary of research on flex- ural behavior, shear behabior and fatigue performance are shown and the method, test items and conclusions are given. And the undone field of this method is pointed out,which may serve as reference to research on FRP strengthening.
出处
《地下空间与工程学报》
CSCD
北大核心
2009年第3期625-629,共5页
Chinese Journal of Underground Space and Engineering
基金
河南省科技计划(082102240009)
河南省教育厅科技计划(08A560004)
校博士基金(648258)
关键词
受弯构件
连续纤维
预应力
维修加固
研究综述
RC flexural member
continuous fiber
prestress
rehabiltation
summary
