武汉理工大学博士学位论文
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^ABSTRACTRecentyears,theconstructionofhighspeedrailwaydevelopfastly.Accordingtoannouncementofthenationaldevelopmentandreformcommission,inthefuturefiveyears,theinvestmentofhigh-speedrailwayconstructionwillmaintainthepresentstatus,theannualinvestment7,000billionyuan.Theancillaryfacilityisalsolarge—scaleconstruct,suchasstationbuilding.ThestructuI.eofbridge-buildingiswidelyusedtothestationbuilding.Thefeaturesofwhichisthatlargerinteriorspaceandgoodvisualeffect.itsroofisdesignedtouselong spanspaceframeroofs仃uctureandadoptssteeltobethebuildingmaterials.Thecharacteristicsofthiskindofstructureisthatgoodholisticstiffness,lightmass,largeflexibleandsmalldamping.Butitissensitivetothedynamicloads.Inthebridge-buildingstructure,therailwaybeamwhichiscarryingthehigh—speedrailwayisthefoundationoftheupperlarge—spans仃ucnlrc.Sothedynamicrasponseduetohigh—speedrailwayloadsCaninfluenceontheupperstructure.Inthispaper,thedynaIIlicresponseoflarge-spanstructureduetohigh—speedrailwayisresearched.thefollowingresearchworksarecarriedout:1.Coupledanalysisoftrain—bridgesystemduetomovingloads.TheengineeringbackgroundisWuhanrailwaystation.Thecoupledanalysismodeloftrain—bridgesystemisdoneduetohigh—speedtrainloads.Thedynamiccharacteristicoftrain-bridgeisanalysised.2.thedynamicresponseanalysisoflarge-spanconstructduetohigh-speedtrainloadsThereactionatsupportisgetfromthemodeloftrain—bridgecalculation,thatiscomparedwiththemeasurementresultstOensuretheaccuracy.Andbasedonit,thefmiteelementmodeloflarge-spansnlJctureiseatablished.Thedynamicresponseoflarge-spanstructureisanalysis.3.Vibrationcomfortresearchofbridge-buildings咖ctureduetohigh-speedtrainloadsIll