界面处理对FRP加固钢筋混凝土梁承载力的影响  

Effect of Surface Preparation on Bearing Capacity of RC Beams Strengthened with FRP

作　　者：董海[1] 何化南[1] 吴智敏[1] 石昌文[1] 

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024

出　　处：《建筑科学与工程学报》2011年第2期75-78,126,共5页Journal of Architecture and Civil Engineering

基　　金："十一五"国家科技支撑计划项目(2006BAJ03A03-09);国家自然科学基金项目(50578025)

摘　　要：以梁跨度、配筋率为参数,利用5组试件对比研究了界面凿毛对纤维增强聚合物(FRP)加固钢筋混凝土梁极限弯矩的影响。结果表明:混凝土界面凿毛后的FRP加固梁的极限弯矩要小于砂轮打磨梁的极限弯矩,并且随着梁跨度的增大,砂轮打磨梁与凿毛梁的极限弯矩差值增大;随着配筋率的增大,砂轮打磨梁与凿毛梁的极限弯矩差值减小。Using a total of 5 group specimens,through two variables of span of beam and reinforcement ratio,the effect of the artificial chiseling on ultimate moment of reinforced concrete（RC） beams strengthened with fiber reinforced polymer（FRP） was investigated.The results show that the ultimate moment of an FRP strenghened beam with artificial chiseling is lower than that of an FRP strenghened beam with wheel grinding.Besides,as the span of beam increases,the difference values increase between the ultimate moment of a beam with artificial chiseling and that of a beam with wheel grinding;and the difference values decrease as the reinforcement ratios increase.

关 键 词：界面处理 纤维增强聚合物 钢筋混凝土梁 承载力 极限弯矩 凿毛 

分 类 号：TU337.4[建筑科学—结构工程]