Strain coordination of quasi-plane-hypothesis for reinforced concrete beam strengthened by epoxy-bonded glass fiber reinforced plastic plate  

作　　者：曾宪桃 丁亚红 王兴国 

机构地区：[1]The Third Engineer Scientific Research Institute of the Headquarters of the General Staff [2]Dept. of Civil Eng. and Architecture, Henan Polytechnic University [3]Dept. of Civil Eng. and Architecture,Central South University

出　　处：《Journal of Harbin Institute of Technology(New Series)》2006年第4期391-394,共4页哈尔滨工业大学学报（英文版）

基　　金：Sponsored by the Natural Science Foundation of Henan Province(Grant No.004041700).

摘　　要：The testing of thirteen reinforeed concrete （RC） beams strengthened by epoxy-bonded glass fiber reinforced plastic plate （GFRP） shows that the RC beam and the GFRP plate with epoxy bonding on it can work fairly well in coordination to eaeh other. But there is relative slipping between RC beam and GFRP plate. And the strain of GFRP and steel rebar of RC beam satisfies the quasi-plane-hypothesis, that is, the strain of longitudinal fiher that parallels to the neutral axis of plated beam within the scope of effective height （ h0 ） of the cross section is in direct proportion to the distance from the fiber to the neutral axis. The strain of GFRP and steel rebar satisfies the equation： εGFRP=Kεsteel.The testing of thirteen reinforced concrete （RC） beams strengthened by epoxy-bonded glass fiber reinforced plastic plate （GFRP） shows that the RC beam and the GFRP plate with epoxy bonding on it can work fairly well in coordination to each other. But there is relative slipping between RC beam and GFRP plate. And the strain of GFRP and steel rebar of RC beam satisfies the quasi-plane-hypothesis, that is, the strain of longitudinal fiber that parallels to the neutral axis of plated beam within the scope of effective height （h0） of the cross section is in direct proportion to the distance from the fiber to the neutral axis. The strain of GFRP and steel rebar satisfies the equation: ε GFRP =Kε steel .

关 键 词：glass fiber reinforced plastic strengthening concrete beam quasi-plane-hypothesis 

分 类 号：TU375.3[建筑科学—结构工程]