钢筋混凝土梁火灾及加固修复试验及结果分析  

Study on fire test,strengthening and repair test of reinforced concrete beam and analysis of the result

作　　者：高鑫[1] 陈礼刚[1] 王红亚[1] 

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033

出　　处：《工程建设》2011年第4期10-13,共4页Engineering Construction

基　　金：青岛市青年科学家科研奖励基金项目(C2007-035)

摘　　要：简要介绍了6根足尺的钢筋混凝土梁火灾试验情况。火灾后用碳纤维布和粘钢加固其中各2根梁,然后分别对加固后的梁和未加固的对比梁进行单调加载的静载试验,观测比较梁发生破坏的全过程。通过对静载试验结果进行分析发现,碳纤维布加固和粘钢加固能够明显提高火灾后钢筋混凝土梁的极限承载力,碳纤维布加固能够明显提高火灾后钢筋混凝土梁的强屈比和延性系数,提高梁的变形能力,从而改变梁受火后的破坏形态。The fire test of six full-scale RC beams was introduced.Two beams after a fire were strengthened by carbon fiber reinforced polymer（CFRP） and steel bonding respectively,then the static load test with mono adjustment was conducted for a strengthened beam and un-strengthened beam to observe and compare the whole failure process.Through analysis of the static load test result,it is found that CFRP reinforcement together with steel bonding enforcement can increase the ultimate bearing capacity of the reinforced concrete beams after fires.In addition,CFRP can enhance strong yield ratio and the ductility factor of the RC beam after fires,thus improving the beam deformability and changing the failure morphology of the beams after fires.

关 键 词：火灾 碳纤维布 粘贴钢板 加固 

分 类 号：TU375.1[建筑科学—结构工程]