预应力FRP板加固钢筋混凝土梁的试验研究  

Experimental Study on Strengthening Reinforced Concrete Beams with Prestressed FRP Plates

作　　者：张健[1] 李斌[1] 张学智 ZHANG Jian;LI Bin;ZHANG Xuezhi(School of Civil Engineering and Architecture,Hunan Institute of Science and Technology,Yueyang 414006,China;Bureau of Housing and Urban-Rural Development of Yueyang,Yueyang 414000,China)

机构地区：[1]湖南理工学院土木建筑工程学院,湖南岳阳414006 [2]岳阳市住房和城乡建设局,湖南岳阳414000

出　　处：《湖南理工学院学报（自然科学版）》2020年第4期45-49,共5页Journal of Hunan Institute of Science and Technology(Natural Sciences)

基　　金：湖南省教育厅科研项目(20C0914);全国大学生创新创业计划项目(202012658013);第二批“产学合作协同育人”项目(教高司[2020]125号);湖南省课程思政建设研究项目(HNKCSZ-2020-0870)。

摘　　要：采用四点弯曲试验研究预应力FRP板加固钢筋混凝土梁的抗弯性能.开展了4个加固工况试验及1个参考试验,分析了各工况梁的破坏形态、荷载-挠度曲线、荷载-应变曲线、承载力和开裂模式.研究结果表明:预应力FRP板能明显提高梁的极限承载力.与未加固梁相比,开裂荷载和极限荷载最大分别提高140.9%和80%,极限变形最大降低35.6%.The flexural behavior of reinforced concrete beams strengthened with prestressed FRP plates is studied by four point bending test.Four reinforcement tests and one reference test are carried out.The failure mode,load deflection curve,load strain curve,bearing capacity and cracking mode of beams under different working conditions are analyzed.The results show that the ultimate bearing capacity of the beam can be significantly improved by prestressed FRP plate.Compared with the unreinforced beams,the cracking load and ultimate load are increased by 140.9%and 80%respectively,and the ultimate deformation is reduced by 35.6%.

关 键 词：试验研究 预应力FRP板 钢筋混凝土梁 抗弯性能 

分 类 号：TU391[建筑科学—结构工程]