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1、Background:PrestressedconcretecontinuousTgirderbridgeduetostressthereasonable,economical,precast-assemblyconstructionisconvenient,andwidelyusedinsmallandmediumspanBridges.However,alotofinserviceinprestressedconcretecontinuousTbridgeindifferentdegreeofcrackd
2、amage,leadingtothebearingcapacityofthestructure,thedurabilityandreducethedecline.WiththerapiddevelopmentofChina'seconomyandtransportationincreasinglybusy,dangerousoldconcretecontinuousTgirderbridgewillappearconstantly,howtoscientific,effectiveandeconomicisl
3、ocatedinthecureoftheseBridges,isinthepresenceofalargebridgeworkersrealisticproblems,andhowtoscientificandaccurateevaluationofbothconcretecontinuousTgirderbridgewiththevalueofloadbearingcapacity,willbetosolvethisproblem,thepremiseandkey.Therefore,accordingto
4、boththeprestressedconcretecontinuousTgirderbridgecrackingconditioninvestigationandclassificationresearch,analysisofthebridgestructurebearingcapacityofinfluencesonthesensitivedamage,constructingthesensitivecrackstructurecomputationalmechanicssimulationmethod
5、andrationalcalculationmodel,bothforprestressedconcretecontinuousTgirderbridgebearingcapacityofquantitativeevaluation,forguidanceintheserviceofthebridgemaintenanceandreinforcement,andhasimportantapplicationvalueandpracticalsignificance.Anticipatedgoal:1,dete
6、rminetheeffectofprestressedconcretecontinuousTgirderbridgestructurebearingcapacityofthesensitivecrack;2,establishcrackingprestressedconcretecontinuousTgirderbridgestructurecomputationalmechanicssimulationmethodandrationalcalculationmodel;3,prestressedconcre
7、tecontinuousTgirderbridgecrackstatisticalparametersonthestructurebearingcapacityinfluencepowervalue;4,crackingprestressedconcretecontinuousTgirderbridgebearingcapacityquantitativeevaluation.scheduleTimestudystage10/2013ofaprestressedconcretecontinuousTgirde
8、rbridgefractureclassificationandinfluencequalitativeanalysis11/2013-02/2014prestressedcrackingconcretecontinuousTgirderbridgefiniteelementmodelanalysismethod03/2014-07/2014sensitivefracturesimulationan
