外贴纤维加固梁CFRP与混凝土粘结性能的试验研究  

Experimental study on bond behaviors between CFRP and concrete in beams bonded with external fibers

作　　者：蔺新艳[1] 曹双寅[2] 黄凤霞[2] 

机构地区：[1]河南理工大学土木学院,焦作454000 [2]东南大学土木工程学院,南京210096

出　　处：《建筑结构》2008年第7期43-45,共3页Building Structure

摘　　要：FRP与混凝土之间的粘结性能是控制外贴FRP加固混凝土结构成败的关键,在外贴CFRP加固钢筋混凝土梁试验中,在纯弯段内沿CFRP受力方向连续粘贴了应变片,进行了CFRP与混凝土的粘结性能的试验研究,并在试验数据的基础上分析了CFRP应变以及粘结剪应力的发展和沿粘结长度的分布规律。研究结果表明初始裂缝的存在对粘结性能的影响主要表现在加载初期和裂缝附近的局部范围。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 bend 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.

关 键 词：CFRP 混凝土 粘结性能 钢筋混凝土梁 裂缝 

分 类 号：TU377[建筑科学—结构工程] TU375