預應力混凝土連續(xù)梁橋施工階段內力分析.pdf

1、西南交通大學碩士學位論文預應力混凝土連續(xù)梁橋施工階段內力分析姓名：羅超申請學位級別：碩士專業(yè)：固體力學指導教師：丁桂保20100301西南交通大學碩士研究生學位論文第1I頁AbstractTheprestressconcretecontinuousgirderbridgeisoneofthemostwidelyusedinbridgeengineeringbecauseofitsexcellentstructuralsystemThel

2、ongspanprestressconcretecontinuousgirderbridgewidelyadoptssymmetricalcantileverpouringconstructionDuringtheprocessofthebalancedcantileverconstruction，theinterforceanddisplacementofthebridgearechangedsophisticatedToensure

3、safetyandqualityduringtheconstruction，theconstructionsimulationandmonitoringmustbecarriedoutAstheconstructionconditions，therearecertaindi伍cultiesinmonitoringthebridgeduringtheconstructionstage，accordinglytheconstructions

4、imulationisimportantinthebridgeconstructionstageThecorrectsimulationnotonlycouldanalyzethebridgeconstructioninternalforcestheoreticallybutalsoprovidesomereferencesforengineeringdesignandconstructionThepaperdescribesthema

5、keup，forcecharacteristicsandthegeneralspatialanalysismethodsofthebridgeItdetailedintroducesthestructureanalysismethodsofthebridgeconstructionprocess，andsomesimulationassumptionsofanalyzebridgeconstructionconditionsbyusin

6、gnumericalanalysismethodThepaperintroducesthespecificmethodsandstepsofthenumericalsimulationofthebridgeconstructionstagebyusingtheFEMsoftwareANSYSBasedonANSYS，thepapersummarizesthemodelingmethods，elementtypeselectionmeth

7、od，meshtechniques，prestresssteelsimulationmethodsandtheprestressingeffectsimulationmethodsofthebox—girderbridgewhichhasacomplexsteeldistributionItcomparedtheadvantageanddisadvantageofvariousmethodstoanalyzethebox—girderb

8、ridgeBytakingacertainprestressconcretecontinuousgirderbridgeasaproject，selectedsolidelementtype，coupledsteelandconcretenodes，simulationprestressingeffectbyappliedtheinitialstrainmethod，defineloads，theconstructionprocesso

9、fprestressedconcretecontinuesgirderbridgeissimulatedandcalculated，andtheanalysisresultsarecomparedwiththoseofMIDAS／Civil’Scalculationandtestdate，whichshowsthatthenumericalsimulationoftheconstructionprocessofthebridgewith