高速铁路高墩多跨简支梁桥列车走行性分析

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1、硕士学位论文ABSTRACTOwingtoconsistentbridgespanforms、similarsectionsandunifiedstructures，simplysupportedgirderbridgeshavebeenwidelyappliedinthehighspeedrailway．Withthesignificantimprovementoftrainspeed，thevibrationresponseofvehicle—bridgeincreasestoo．Therefor

2、e，theanalysisofvibrationofvehicle—bridgeinthehighspeedrailwaybridgedesignisnecessarytoensurethetrainsafetyandcomfortpassengerswhentrainsgothroughbridges．Basedon12typicalmulti—spansimplysupportedgirderbridgeswithhi'ghpiersinNanjing—HangzhouandShijiazhuan

3、g—WuhanPassengertransportexpressrailwayandSOon，thecoupledvibrationofvehicle·-bridgeofthemulti——spansimplysupportedgirderbridgeswithhighpiersinhighspeedrailway(theoreticalspeed350km／h)areanalyzedinthispaper．Themajorworkandconclusionsofthefull．textareasfo

4、llows：1．Spacefiniteelementmodelsofthe12multi—spansimplysupportedgirderbridgeswithhighpiersareestablishedandtheself-vibrationofbridgearecalculatedaswellasanalyzed．Theresultsshowthattheeigen—frequenciesofthebridgesmeettheregulatoryrequirements，andthebridg

5、eshavegoodstiffness．2．Theresponsesofvehicle—bridgevibrationofthe12bridgesarecalculatedwhenthehigh—speedtrain(includingtheGermanICE3，theFrenchTGVandthedomesticC300)goesthroughasingleortwo—lanebridgebythespeedsof250～420km／h．Theresultsshowtheindicatorsofth

6、ecalculationarewithinthelimits．3．Thetheoreticalresonantspeed(thepeakspeedofbridgeresponse)ofthe12bridgesarecalculatedwhenthehigh-speedtrain(includingtheGermanICE3，theFrenchTGVandthedomesticC300)goesthroughbridges．Itagreestotheresultsofthecalculationofsp

7、acevibrationresponseofvehicle—bridge．4．Accordingtocomprehensiveanalysisandcomparisonofmanynationalstandardsonlateralstiffnessofbridgepiers，aswellastheresultsofresponseofvehicle—bridgespatialvibrationofthe12multi-spansimplysupportedgirderbridgeswithhighp

8、iers，itisIldemonstratedinthisthesisthatlateralrigiditylimitofpiertopshouldberelaxedwhenthereisaincreaseinheightofpier．KEYWORDS：highspeedrailway,simplysupportedgirderbridge，highpier,vibrationofvehicle—bridge，lateralstiffness，analy