预应力玻璃纤维布加固已损混凝土梁的试验研究  

Experimental Study on Damaged Concrete Beams Reinforced by Prestressed GFRP

作　　者：吴昆[1] 翟爱良[1] 王晖[1] 刘书壮[1] 李建军[1] 

机构地区：[1]山东农业大学水利土木工程学院,山东泰安271018

出　　处：《水利与建筑工程学报》2010年第5期20-23,共4页Journal of Water Resources and Architectural Engineering

基　　金：山东省自然科学基金资助项目(2009ZRB01879)

摘　　要：提出粘贴预应力玻璃纤维布加固混凝土梁的技术。设计了5根不同加固情况的混凝土梁,分别试验观测其正截面受弯承载力、荷载-挠度曲线、荷载-应变曲线,裂缝开展情况及破坏现象,分析加固梁的受力特点以及受力性能,探讨不同受损程度对加固效果的影响,提出了实用技术与建议。In order to reinforce concrete beams,the technology for pasting the prestressed GFRP at the bottom has been proposed.Five kinds of concrete beams,which are reinforced under different circumstances,are designed and used for the test observations of the flexural capacity of cross-section,load-deflection curve,load-strain curve,fissure conditions and damage phenomenon of reinforcing beams.Then,the mechanical characteristics and performance of the reinforcing beams are also analyzed,and the impacts on reinforcement caused by the different degrees of damagement are discussed.At last,the practical technologies and suggestions are put forward.

关 键 词：受损混凝土梁 玻璃纤维布 预应力加固 二次受力 

分 类 号：TU375.1[建筑科学—结构工程]