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（1 河南理工大學(xué)土木學(xué)院，焦作 454000； 2 東南大學(xué)土木工程學(xué)院，南京  210096）
［摘要］FRP與混凝土之間的粘結(jié)性能是控制外貼FRP加固混凝土結(jié)構(gòu)成敗的關(guān)鍵，在外貼CFRP加固鋼筋混凝土梁試驗(yàn)中，在純彎段內(nèi)沿CFRP受力方向連續(xù)粘貼了應(yīng)變片，進(jìn)行了CFRP與混凝土的粘結(jié)性能的試驗(yàn)研究，并在試驗(yàn)數(shù)據(jù)的基礎(chǔ)上分析了CFRP應(yīng)變以及粘結(jié)剪應(yīng)力的發(fā)展和沿粘結(jié)長(zhǎng)度的分布規(guī)律。研究結(jié)果表明初始裂縫的存在對(duì)粘結(jié)性能的影響主要表現(xiàn)在加載初期和裂縫附近的局部范圍。
［關(guān)鍵詞］CFRP；混凝土；粘結(jié)性能；鋼筋混凝土梁；裂縫
Experimental study on bond behaviors between CFRP and concrete in beams bonded with external fibersLin Xinyan1，2, Cao Shuangyin2, Huang Fengxia2 (1 College of Civil Engineering,Henan Polytechnic University,Jiaozuo 454000,China; 2 College of Civil Engineering, Southeast University, Nanjing 210096, China)
Abstract:The bond behavior between FRP and concrete is a key factor to affect the behavior of members strengthened with FRP. Strain gauges were continuously mounted on the top of CFRP in the flexural zone of reinforced concrete beams to study the bond behavior of CFRP and concrete. The distributions and developments of CFRP strains and the bond shear stresses are analyzed based on the test data. The results indicate that the initial cracks affect the bond behaviors at the lower load levels or near cracks.
Keywords:CFRP; concrete; bond behaviors; reinforced concrete beams; crack
作者簡(jiǎn)介：藺新艷，博士，講師，Email:linxinyan79@yahoo.com.cn。