The Failure Mechanism of CFRP Reinforced RC Beam under Impact Loads  

作　　者：LU Juan ZHANG Yafang 卢娟;张亚芳(School of Civil Engineering,Guangzhou University,Guangzhou 510006,China)

机构地区：[1]School of Civil Engineering,Guangzhou University,Guangzhou 510006,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2022年第6期1246-1251,共6页武汉理工大学学报（材料科学英文版）

基　　金：by the National Natural Science Foundation of China(No.51878190)。

摘　　要：The influence of carbon fiber reinforced plastic(CFRP)on dynamic mechanical properties of reinforced concrete(RC)beam was studied by drop hammer impact test system.The impact behaviors of beam,including failure mode,impact force peak value and peak deflection were analyzed.The experimental results show that bonding CFRP can reduce the crack width and change the failure mode of the beam.The length of CFRP has a certain influence on the impact force and deflection,and the peak inertia force of most beams is roughly in the range of 1/2-5/6 of the peak impact force.In addition,dynamic increase factor(DIF)increases with the increase of CFRP length,and its maximum value can reach 2.11.

关 键 词：CFRP RC beam failure mode impact resistance DIF 

分 类 号：TU375.1[建筑科学—结构工程]