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时间:2019-02-04
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1、学兔兔www.xuetutu.com既有钢管混凝土拱桥实时监测评估系统陈钒79文章编号:1003—4722(2010)01—0079—05既有钢管混凝土拱桥实时监测评估系统陈钒(中铁西南科学研究院,四川I成都610031)摘要:既有钢管混凝土拱桥实时监测评估系统是对桥址处的温度场、大桥的交通荷载状况及桥梁的静、动力效应实时监测,评估桥梁主体的运营状况。该系统主要由状态监测、损伤报警和性能评估及辅助决策子系统构成,能自动采集、分析和评估结构各类状态数据;判断异常状态并报警;自动探查采集系统故障;灵活设置数据采集时段,长期全面记录桥梁的受荷及
2、响应历史;适时响应中控中心指令,实时查询、分析桥梁的运营状况。通过计算确定传感器的合理布置位置;远程数据传输采用有线数据传输方式。运行结果表明,该系统实现了既有钢管混凝土拱桥运营状况数据和图像的实时联动采集、实时自动传输及桥梁运营状态的远程实时自动监测、性能评估和安全预警。关键词:拱桥;钢管混凝土结构;监测;监控系统;运营;评估中图分类号:U448.22;U446.3文献标志码:AAReal—TimeMonitoringandAssessmentSystemforExistingCFSTArchBridgesCHENFnn(ChinaRa
3、ilwaySouthwestResearchInstitute,Chengdu610031,China)Abstract:Thereal—timemonitoringandassessmentsystemforexistingconcrete—filledsteeltube(CFST)archbridgesisasystemthatisusedformonitoringthetemperaturefieldsatbridgesites,thetrafficloadconditions,thestaticanddynamiceffectof
4、thebridgesandalsoforassess—ingtheoperationstatusoftheprincipalstructuresofthebridges.Thesystemismainlycomposedoftheconditionmonitoring,damagealarming,performanceassessmentandauxiliarydecisionsubsystems.Thesystemcanautomaticallyacquire,analyzeandassessthedifferentcondition
5、dataofthebridgestructures,makejudgmentofandalarmtheabnormalconditions,automaticallyde—tectandacquirethemalfunctionofthesystemitself,flexiblysetthetimesectionsofdataacquisi—tion,recordinalongtermandall—roundwaytheloadandtheresponsehistoryonthebridges,re—al—timeinquireandan
6、alyzetheoperationconditionsofthebridges,determinetherationalloca—tionsoflayoutofsensorsthroughcalculationandremotelytransmitthedatabythewireddatatransmission.Theoperationofthesystemshowsthatthesystemhasrealizedtherea1timelink—ageacquisitionandautomatictransmissionofthedat
7、aandimagesoftheCFSTarchbridgesaswellastheremoteautomaticmonitoring,performanceassessmentandsafetyalarmingoftheop—erationconditionsofthebridges.Keywords:archbridge;concrete—filledsteeltubestructure;monitoring;monitoringsystem;operation;assessment收稿日期:2009—10—09作者简介:陈钒(1972
8、一),男,高级工程师,1997年毕业于西南交通大学建筑工程专业,工学学士,2005年毕业于西南交通大学结构工程专业,工学硕士(c{sc~1037@163.corn)。学兔兔www.xuetut
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