CFRP板加固混凝土结构不同方法的黏结性能比较  

Comparative study on the bond performance of concrete structure reinforced by different forms of CFRP strips

作　　者：吕毅刚 吴攀 彭晖 乔杰 饶攀 韩伟威[2] LYU Yigang;WU Pan;PENG Hui;QIAO Jie;RAO Pan;HAN Weiwei(School of Civil Engineering,Changsha University of Science&Technology,Changsha 410114,China;School of Traffic&Transportation Engineering,Changsha University of Science&Technology,Changsha 410114,China;Communications Construction Company Highway Bridges National Engineering Research Center Co.,Ltd.,Beijing,100088,China)

机构地区：[1]长沙理工大学土木工程学院,湖南长沙410114 [2]长沙理工大学交通运输工程学院,湖南长沙410114 [3]中交公路长大桥建设国家工程研究中心有限公司,北京100088

出　　处：《交通科学与工程》2022年第2期62-67,共6页Journal of Transport Science and Engineering

基　　金：国家自然科学基金项目(51878068);湖南省教育厅科学研究一般项目(20C0063);湖南省教育厅科学研究创新平台开放基金项目(20K005);长沙理工大学土木工程优势特色重点学科创新性基金项目(17ZDXK07)

摘　　要：为比较水平嵌贴CFRP板与表面黏贴、表层嵌贴CFRP板加固混凝土结构的界面黏结性能,采用单剪拔出试验,分析各试件的黏结承载力、破坏模式、CFRP应变分布及加载端部滑移。试验结果表明:水平嵌贴CFRP板加固法的界面黏结性能比表面黏贴CFRP板加固法的好,比表层嵌贴CFRP板加固法的差,但其平均黏结承载力能达到表层嵌贴CFRP板加固法的79%,处于较好水平。The CFRP strip is usually mounted vertically to reinforce concrete structure.As the minimum groove depth required for horizontally-mounted CFRP strip is small.There is a certain application value in the reinforcement of the old bridge when the groove depth is limited.In order to compare the interface bond performance of horizontally-mounted CFRP strips,externally-bonded and near-surface-mounted CFRP strips,the single shear pull-out experiment was used to analyse the bond capacity,failure mode,CFRP strain distribution,and loading end slip of specimen.The test results show that the interface bond performance reinforced by horizontally-mounted CFRP strips is stronger than that reinforced by externally-bonded CFRP strips,and weaker than that reinforced by near-surfacemounted CFRP strips.However,the average bond capacity of specimens reinforced by horizontallymounted CFRP strips can reach the 79%of that reinforced by near-surface-mounted CFRP strips.It is placed in a satisfactory level.

关 键 词：水平嵌贴 CFRP板 单剪拔出试验 黏结性能 

分 类 号：O319.56[理学—一般力学与力学基础]