高速鐵路路基上有砟軌道與無砟軌道過渡段研究.pdf

1、北京交通大學碩士學位論文高速鐵路路基上有砟軌道與無砟軌道過渡段研究姓名：郭積程申請學位級別：碩士專業(yè)：道路與鐵道工程指導教師：高亮20090601ABSTRACTABSTRACT：111edevelopmentofhigh—speedrailwayshouldbebasedonsecurityreliabilityandcomfortpropertyMoreoverhi曲一leveltrackregularityandthestabil

2、ityofsubrailfoundationshouldbeguaranteedTheconstructionofhighspeedrailwaywillinevitablyencountertransitionalsectionofdifferentsubrailfoundations，whichistheweakpartinhighspeedrailwayThedifferenceofthestrength，stiffnessand

3、settlementofthetrackintransitionsectionwillleadtokinkdeformationandtrackirregularitiesInordertoguaranteethesmoothnessofhighspeedrailwaylinemeasuresshouldbetakenintransitionsectiontoavoidesuddenchangeofstiffnessBasedonthe

4、formerresearchandtheconstructionofBeijingShanghaiHigh—speedRailwaytheauthorestablishesathreedimensionalmodelwithcommercialsoftwareABAQUS，tryingtosimulatethedynamicresponseoftransitionsectionbetweentheballastedtrackandbal

5、lastlesstrackontherailwaysubgradeInthispapertheestablishedmodelispresentedindetail，includingsolidmodelofballastedtrack，solidmodelofballastlesstrack，threedimensionalmodeloftransitionsectionbetweenballastedtrackandballastl

6、esstrackmodeloftrackirregularitiesandmodelofwheel—railcontactCombined麗mrelateddynamictestdataofSuiningChongqingRailwayLine，thereliabilityofthismodelingisapprovedOtherquestionswhichneedspecialattentionincludingintegralste

7、p，griddensitycalculationtimeandboundaryconditionsarealsoindicatedinthispaperBasedontheformermodel，thedynamicresponseoftransitionsectionbetweentheballastedtrackandballastlesstrackontherailwaysubgradeofhigh—speedrailwayisa

8、nalyzedwiththeparametersoftrackstiffness，raildeflectionangle，vehiclespeedanddrivingdirectionInthismodel，ballastlesstrackiscommonslabtrack；thesleeperofballastedtrackisTypeIllconcretesleeperandthevehicleismotortrainunit(30

9、0km／h)withdistributeedpowerofselfdevelopmentTheapplicabilityandrationalityofdifferentoptionsfortransitionalsectionbetweenballastedtrackandballastlesstrackontherailwaysubgradeofhigh—speed瑚ilwayarecomparedandfourplansarere