多跨簡支梁橋面修補技術(shù)的數(shù)值模擬分析.pdf

1、長沙理工大學碩士學位論文多跨簡支梁橋面修補技術(shù)的數(shù)值模擬分析姓名：李杏申請學位級別：碩士專業(yè)：港口、海岸及近海工程指導教師：喻澤紅20100401ABSTRACTThebigtensilestresscausedbynegativebendingmomentwillgettheconcreteinthecontinuousdecksimplysupportedbridgecrackThereweretwocommonlyusedwavs

2、forrepairingthecrackeddeck：oneistransformingsimplysuppoIrtedbridgetosimplysupportedcontinuousbridgeandtheotherisreplacingthecrackedconcretewithrepairingmaterialThereisstillanotherseldomusedwayinwhlchtnebridgeistransfonne

3、dtocontinuousbridgewithoutaddingprestressandwithoutsupportconversionFromarealprojectofrehabilitatingatwospannedcontinuousdecksimplYsupportedT_be啦edbridge，thestudyofseveraldifferentrepairingschemewascarriedoutindetailthro

4、ughnumericalsimulationandseveralusefulresultswereobtainedThepaper’Smainworksinclude：(1)Fourrepairingmethodswerestudiedindetail，whichincludedsteelfiberconcreteproject、steelfiberconcretecarbonfabricproject、epoxyconcreteand

5、epoxyconcretecarbonprojectAlltheseresearcheswerecarriedoutintheso姍areANSYSsothefundamentaltheoryoffiniteelementmethodwasmentionedandespeciallythedetailedintroductionofSOLID65elementwaspresentedThemostdetrimentalplacefort

6、heconcentratedlaneloadingwascalculatedwiththehelpofextremumprincipleThecoupledeffectbetweenlaneloadingcaseandtemperaturecasewasanalyzed，whichcouldbereferredas尸一Aeffect(2)Thenumericalsimulationshowsthatthetemperaturecasei

7、smoredetrimentalforthecrackingofdeckthanthelaneloadingcaseBecausethedepthoftherepairingmaterialisverysmallanditcan’tprovidetheenoughrigiditytesisttheincorporatedisplacementcausedbyappliedloads，thebigrelativedisplacemento

8、fbothsideswillleadtothecrackoftheconcreteabovedespiteofthestiffrepairingmethodwithsteelfiberconcreteandthesoftrepairingmethodwithepoxyCOncretewhetheraddingcarbonfabricornotThenumericalsimulationofthefourdifferentrepairin

9、gtechniqueshowsthereneedsabetterrepairingtechnique。(3)Transformingthesimplysupportedbeambridgewhichneededrepairingtobecontinuousbeamwithoutaddingprestressandwithoutsupportconversionwastestedtobeeffectiveintheloadcase，yet