芳纶纤维与混凝土界面黏结-滑移关系研究  

Study on the bond slip relationship between aramid fiber and concrete

作　　者：袁娇娇[1,2] 林军[1] 蔺彦玲 侯新宇 YUAN Jiaojiao;LIN Jun;LIN Yanling;HOU Xinyu(The City Vocational College of Jiangsu,Nanjing 210036,China;Hohai University,Nanjing 210098,China)

机构地区：[1]江苏开放大学,江苏南京210036 [2]河海大学,江苏南京210098

出　　处：《混凝土》2021年第6期34-38,共5页Concrete

基　　金：国家自然科学基金资助项目(51908250);江苏省高等学科自然科学研究面上项目合同(2019年度)(19KJD560002)。

摘　　要：对芳纶纤维复合材料(AFRP)与混凝土结合面进行试验研究.试验测得AFRP表面应变值,并计算出局部黏结剪应力和局部滑移值,评价和比较了黏结宽度对AFRP-混凝土界面黏结-滑移关系的影响.试验结果表明:不同黏结宽度下AFRP-混凝土界面的应变分布、局部黏结剪应力、黏结-滑移关系相似.通过对试验数据的回归分析,基于Popovics模型,建立了AFRP-混凝土界面黏结-滑移关系计算模型,为AFRP加固损伤结构提供试验和理论依据。An experimental study on the interface between AFRP and concrete is carried out.The surface strain of AFRP was measured,and the local bond shear stress and local slip were calculated.The influence of bond width on bond slip relationship of afrp-concrete interface was evaluated and compared.The results show that the strain distribution,local bond shear stress and bond slip relationship of afrp-concrete interface are similar under different bond width.Based on the regression analysis of test data and Popovics model,a calculation model of bond slip relationship between AFRP and concrete interface is established,which provides experimental and theoretical basis for strengthening damaged structures with AFRP.

关 键 词：双面剪切试验 界面剪应力分析 黏结-滑移关系 

分 类 号：TU528.572[建筑科学—建筑技术科学]