地鐵軌道結(jié)構(gòu)減振性能評價(jià)研究.pdf

1、同濟(jì)大學(xué)碩士學(xué)位論文地鐵軌道結(jié)構(gòu)減振性能評價(jià)研究姓名：王惠鳳申請學(xué)位級別：碩士專業(yè)：交通運(yùn)輸工程；載運(yùn)工具運(yùn)用工程指導(dǎo)教師：耿傳智200903AbstractABSTRACTDevelopingurbanrailtransitisaneffectivewaytomitigateincreasinglycrowdedurbantrafficItmakespeopleconvenienttocomeandgo，andbringsremark

2、ablesocialbenefits，butmeanwhileitarousessomereverseinfluencesWiththedevelopmentofsocialeconomyandtheraiseofpeople’Slivingquality，theproblemofenvironmentvibrationshasbeenmoreandmorenoticedInordertomakesustainabledevelopme

3、nt，itisnecessarytodecreasevibrationandnoiseforurbanrailtransitSoitisimportantandnecessarytostudyandcontrolthevibrationandnoiseofurbanraiItransitAsthevibrationofwheelrailisthecouplingvibration，itexportsvirbrationthroughth

4、etrackstrcutureSoasthevibrationsourceandtheimportanttacheofthevibrationtransmission，thetrackstuctureaffectdirectlyvibrationresponseItismorereasonableandmoreeffectivetostudythevibrationreductionfromthesourceandthetransmis

5、sionofvibrationinthisthesis，structuraldynamics，vehicledynamicsandorbitaldynamicsareusedtobuildthestructuredynamicmodelThispaperanalyzesthevibrationreductionperformanceoftheelasticfastemtrack，theresilientsleeperballastles

6、strack，thesteelspringfloatingslabtrack，theelasticbearingfloatingslabandtheframefloatingslabtrackthroughthecombinationoftheoreticalanalysisandfieldteStFirstly，thispaperanalyzesvibrationfrequencyandmodeshapeofdifferenttrac

7、kstructuresbasedonanalysissoftwareANSYSAlsothispaperanalyzestheeffectofdifferentfastenerstiffness，resilientsleeperballastlessstiffnessandsupportstiffnesstothevibrationfrequencyofthetrackstructuresBsaedonthepenaltyfunctio

8、nmethodandthewheelrailcontactboundaryconditions，thepaperbuildsuptheFEMmodelofwheelloaddropsimulatingtheactualimpactofwheelrailtoanalyzevibrationreductionperformanceofdifferenttrackstructuresandtheeffectofdifferentfastene