标良好,取得较好的社会和经济效益.针对该桥梁板意外火烧,灭火,检测,加固,运营使用等分析和观察,笔者认为:(1)砼结构受火烧高温时用水灭火导致骤然降温会进一步加剧砼的破坏,剥落;(2)对火灾桥梁应根据实际情况对外观,砼强度,砼碳化情况,钢筋力学性能进行检查和检测,对情况严重的要进行荷载试验,以确定其受损状况及是否满足使用要求;(3)若砼和钢筋主要力学性能可满足或略低于规范和使用要求,可通过找平,注浆,粘贴碳纤维,粘贴钢板等常规加固方法进行处理.(收稿日期:2011—04—22)I'hetestandreinforcementofthepre—urrenceoffirezHENGW一zhan(Zhongshanmanagementstationoftrafficengineeringcost,Zhongshan528403,China)Abstract:FuLong—bridgeofgushenroadinzhongshansufferersfromthegreatfireafteropentotrafficfortendays,Largeacreageconcreteofthebeambottomwerepeelingandthesteelbarwereexposingontheair.Bymeansoftestingconcretestrength,carbonizeandmechanicalpropertiesofsteelandstaticloadtestsonbeam,theperformanceandstateofdamagedstructurewereAssessmentandthereinforcementprogrammewaspropoun—ded.Keywords:Bridge;Fire;Test;Assessment;Reinforcement?24?
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