crtsi型板式无砟轨道正线与道岔过渡段竖向动力分析

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1、ABSTRACTEstablishedslabtrackandturnouttransitionsectionastheresearchobjectUsingacademicianZengQingyuan’Sconstantelasticpotentialenergyprinciplecalled”seatmatching”method．thispaperestablishedthevehiclemodelequations．andusedMATLABfortheprogramofvehicle

2、equationBasedontheestablishedANSYSmodel，usingANSYSextractionmatrixmethod，thispaperestablishedthefoundationmatrixAccordingtothematrixdocument’Sextractionforthe【oadanav．theIinepositionoftherajlnodesinthelowerfundamentalinatrixwasgottenTheuheel—raIIcoup

3、ledequationsduetotheircouplingl_elationshlpwasdeduced，combiningthevehiclematrixwiththelowerfundamentalmatrix’SlinepositionintoanentirematrixⅥ,ithtime—vaD'ingtrain—trackcouplingsystemMATLABwasusedforworkingOUtrelevantproceduresRunningthecalculationpro

4、gramforvibrationresponseofallpansintrain—railsystem，andthemodel’Saccuracywasverifiedbycomparingwithauthoritativepaper，byⅥhichthedynamicresponseoftheslabtrackwiththeturnoutwascalculatedTherefore．someconclusionsareadressed：whentheelasticmodulusofCAmort

5、arincreasesfrom200MPatO600MPa．slabtrack’Sdeformationandvibrationresponsewouldbothreduceby60％orSO；whenthefastenerverticalstiffnessincreasesfrom20to70．raildeforrnationwouldreduceby70％whichlcadstolessinfluenceOilrailacceleration；whentheslabtrackaccelera

6、tesincreasingbv70％．1esseffectwouldmakeonitsdisplacementdefonnation；、、henirregularitiesamplitudeincreasesfrom2mmto15lnnl．trainaccelerationwouldjncreaseby4．4times，whichmakeIesseffeCtonotherstatus；whenthespeedgrowsfrom160km／hto350kardh．railandslabtrack’

7、Saccelerationwouldgrowby3timesorso，othersareIesseffectedThewheel-railforcemainlyinfluencedbytherailsurfaceirregularityandthetrainspeedAtiersomeanalysis．jtwasfoundOUtthattheonlyinfluencefactorofstimlessmatchbetweeninterva】andturnoutareawastheirvemical

8、stiffnessoftheNstenenByadjustingtheverticalstiffimssparalnetersandsomecalculation，theconclusionwasadressed：whenIntervalstifineSSiSlargerthanverticalstifinessofturnoutareafastenerby12±1kN／mm．bothofthemwouldmatchwellTherefore，thesuggestedturnoutareasti