系杆拱桥结构构件可靠度评估研究

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1、1053609仑肥工雩火警HefeiUniversityofTechnology硕士学位论文MASTERDISSERTATIoNo论文题目：系杆}止桥结构构件Ⅲ靠度评怙研究学位类别学历硕学科专业：工程领域)作者姓名：导师姓名完成时间张志蔡敏教授EvaluationandStudyonReliabilityoftheTiedArchBridge’StheStructureComponentsAbstract11坨tiedarchbridgeisoneofthevigorousstylesinourcount

2、ryrecently．ManyengineersusethisstyleforitsexcellentcapabiUtysuchasbeautifulmodel．properforce，simpleconstructionete．Withtheincreasingoftraffic，especiallytheautomotiveoverloading，therearemanydeficienciesanddamagesinexistingtiedarchbridges．So，it'snecessaryto

3、analyseandevaluatethestrue431rereliabilityoftheexistingtiedarchbridge．Inthisdissertation,thestructurereliabilityofthetiedarchbridgeisresearchedbyStructureReliabilityTheoryanditsreliabilityassessmemmodelonreliabilityisestablished．111esystemreliabilityanaly

4、sisofthetiedarchbridgeispresentedbasedonthethreecomponentsofarchrib，girderandsuspender．Nowmainlycompletedafollowing、^，ork：Firstly。combinewithactuallyengineering，tothestructurereliabilityofpracticalcomputeamethod：Tworankmatrixcentralpointmethods，improvemem

5、oftworankmatrixmethodsand‘‘JCmethod'’carriesontheanalysiscomparison,makingsuretheadoptiOil”JCmethod”isthisthesiscalculationmethod．Second】y,basisonactualexaminationdata,consideredchangeofthestructureresistanceandloads，itcalculatecurrentreliabilityindexsign

6、ofthestructurecomponent．Consideringactualstructuresystemin,thecomponenttheabilityandlotuscarryofrelativityprovesthestructuresystemcomparisonreasonableofreliabilityindexsign,completethevaluationofthecurrentstructureloadingability．Finally，drawlessonsfromthe

7、foundationthattheexperts,weledintotimeparameter‘甲inthestructureresistancemodeIandtheloadsmodelandputforwardsimple，thepracticaldynamicstatecredibilitycalculationmethod．Combimng、ⅣitlIreliabilityindexsignoftarget。weconfirmcurrentstructurereliabilityindexsign

8、andcarryoutstructuresurplusservicelife0ffthebridge．Keywords：tiedarchbridge，structurebearingcapacity，reliability,JCmethod,reliabilityindex，dynamicstatecredibility插图清单德国费马恩松德桥⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．2广州丫髻沙大桥⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯