列车对双块式无砟轨道竖向动力特性的影响分析

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1、西南交通大学硕士研究生学位论文第1I页AbstractInordertoalleviatethepressureofrailwaytransportationofChina,collinearmodeofpassengersandfreightstransportisadoptedinpartofexistingrailwaylineafterthespeed-raisingreformandinitialoperationofpassengerdedicatedline．Forthemixedpassengerandfreight

2、railways，thecontradictionbetweentransportcapacityandtrafficvolumeisprominent．Withtheincreaseofthevehicleaxleloadoffreightvehicleandthespeedofpassengervehicle，impactactionbetweenwheelandrailcontinuestoincrease，exacerbatingthedamagingeffectsofvehiclesonthetrackstructurea

3、ndshorteningthelifeofthetrackstructure，whichcouldincreasethemaintenanceworkload．Therefore，thereisgreattheoreticalsignificanceandengineeringapplicationbackgroundinthestudyonverticaldynamicperformanceofballastlesstrackundertheconditionofcollineartransportofpassengersandf

4、reights．Themainresearchworksinthepresentdissertationinvolves：(1)Theverticaldynamicsmodelofthevehicles—double-blockballastlesstrackisestablishedbasedonthetheoryofwheeltrackdynamics，theballastlesstrackdynamicssimulationunderdifferentwheel-railmotivationconditionsincludin

5、gweldprojectionirregularity,welddepressionirregularity,trackverticalprofileirregularityandtrackdistortionirregularityarealsodemonstrated．(2)Theimpactof200km／hpassengerand120km／hfreightvehicleonthedouble-blockballastlesstrackdynamiccharacteristicsundertheactionofdiffere

6、ntheightofweldprojectionirregularity,differentdeepthofwelddepressionirregularity,differentamplitudeoftrackverticalprofileirregularity,differentamplitudetrackdistortionirregularityaremainlyanalyzed．(3)Acomparativeanalysisofdynamicperformanceofdouble-blockballastlesstrac

7、kcausedby200km／hpassengerand120km／hfreightvehicleunderthesametrackirregularityismade，andtheeffectsofdifferenttrainsondouble．blockballastlesstrackforceanddeformationiSevaluated．Keyword：mixedpassengerandfreightrailway；double-blockballastlesstrack；dynamiccharacteristics；t

8、rackirregularity西南交通大学硕士研究生学位论文第1II页目录摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．IAbstract⋯．⋯⋯⋯⋯．⋯⋯．⋯．⋯⋯⋯．⋯⋯⋯⋯．⋯．⋯．．⋯⋯．⋯⋯．⋯⋯