高彈性鋼軌扣件研究.pdf

1、同濟大學(xué)土木工程學(xué)院碩士學(xué)位論文高彈性鋼軌扣件研究姓名：戴顯強申請學(xué)位級別：碩士專業(yè)：防災(zāi)減災(zāi)工程及防護(hù)工程指導(dǎo)教師：耿傳智傅曉暉20080301AbstractAbstractAseveryoneknows，itisimportanttoconstructtheurbanrailsystemasourcountry’SeconomydevelopsrapidlyandmorelargecitiesappearHoweveLthevib

2、rationandnoisealongtherailwaylinesshouldnotbeneglectedNowadaysthefastenersappliedinurbanlinesofourcountryarelistedasfollows：clips1typefastening，DTtypefasteningandWJlowresistancefasteningLearningtheforeignexperience，thefa

3、steningswhicharefixedundertherailsreducethetrackstructure’Svibrationandnoisetoextendtherailwayline’Susagelife，reducethemaintenancecostandprotecttheenvironmentFirstlytypes，characteristicsandvibrationisolationbehaviorofrai

4、lfasteningsindifferentcountriesareinvestigatedSecondlythedynamicmodelofvehicle—highelasticfasteningssystemsisbuiltInsuchmodel，therailissimulatedasallendlessEulerbeamonthediscretelysupportedelasticfoundation，therubberpads

5、underrailandfasteningsaretreatedaslinerspringsuniformlydistributedDependingonthevehicletrackdynamicdifferentialequations，thewheel—railforcesandthesupportreactionsunderdifferentrailfasteningsareanalyzedFurthermore，thebond

6、ingtyperailfasteningsaredevelopedandtheirvibrationisolationeffectsaretestifiedThroughwheelraildynamicanalysisandtheparameters’optimization，thehighelasticrailfasteningsaredesignedandtheirvibrationreductioneffectstestified