AFRP-混凝土界面有效粘结长度模型分析  

Model analysis on effective bonding length of interfacial shear stress between AFRP and concrete

作　　者：袁娇娇[1,2] 苑溦 侯新宇 林军[1] YUAN Jiaojiao;YUAN Wei;HOU Xinyu;LIN Jun(School of Construction Engineering,Jiangsu Open University,Nanjing 210036,China;School of Civil Engineering and Transportation,Hohai University,Nanjing 210098,China)

机构地区：[1]江苏开放大学建筑工程学院,江苏南京210036 [2]河海大学土木与交通学院,江苏南京210098

出　　处：《人民长江》2020年第10期182-186,214,共6页Yangtze River

基　　金：国家自然科学基金资助项目(51908251,21908250)。

摘　　要：纤维增强聚合物(FRP)与混凝土界面的典型破坏模式是FRP与混凝土基层的剥离,因此FRP与混凝土基层之间有效粘接长度与剥离承载力的确定是一个非常重要的问题。采用双面剪切试件开展试验,得到了不同组别试件的AFRP-混凝土界面粘接剪应力与应变随荷载的变化规律;另外,对试验数据进行回归分析,基于ACI 440.2R-08模型进行修正,提出了AFRP-混凝土界面有效粘结长度修正模型。研究成果可供相关规范修订时参考。The typical failure mode between fiber reinforced polymer(FRP)and concrete interface is the peeling of FRP and concrete base,so the determination of effective bonding length and peeling bearing capacity between FRP and concrete base is a very important problem.Based on the double shear test,the bonding stress and strain of aramid fiber reinforced polymer(AFRP)-concrete interface under different loads with different groups of specimens were obtained.Moreover,through regression analysis of the test data and modification based on the ACI440.2R-08 model,a new effective bonding length correction model for AFRP-concrete interface was obtained.

关 键 词：AFRP-混凝土界面 有效粘结长度模型 双面剪切试验 界面剪应力 

分 类 号：TU528.572[建筑科学—建筑技术科学]