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1、萬方數(shù)據(jù)ABSTRACTWiththelarge··scaleconstructionofhigh·-speedrailway,thepassengertransportdemandisincreasing，moretrain—setsareneededtocoverthetimetable．However,thetrain-setsaresoexpensivethattheyoccupyalargerproportioninhi。ghspeedrmlwayinvestment，inordertosavetheinvestmentandoperationcost，therailway
2、relateddepartmentshopeitcancoverthetimetablewithminimumnumberoftrain-setsandimprovethetrain—setutilizationratios．Thenumberoftrain—setsandutilizationratiosarerestrictedtothetrainoperationmodes．Thispapermainlystudiedtheimpactoftrainoperationmodesontrain．setutilization，SOastohaveaconsiderabledecre
3、asingofthenumberoftrain—setsandimprovethetrain—setutilizationratios．ThemainworkandachievementsCallbesummarizedasfollows：1．Thebasicfeatures，advantagesanddisadvantagesandapplicableconditionofdifferenttrainoperationmodeswereanalyzed．Basedonthroughandtransfermodes，thispaperconstructedfourtrain—setu
4、tilizationscenesbycombiningdifferenttrain—setutilizationmodestostudytheimpactoftrainoperationmodesontrain—setutilization．Viatheanalysisoftrain-setroutingbasicfeaturesinthisfourscenes，thispapersummarizedtheimpactisconcemedwithwhetherthetrainoperationstructuresareeasytoformthetrain-setroutingwhic
5、hcontainsthelongandshorttrainlines．2．Basedonthetrain-setutilizationmodesofourhighspeedrailway,thispaperbuildthetrain．setroutingoptimizationmodelswhichfacesingledepot，multipledepotswithmaintenanceintheirowndepotsandmultipledepotswithmaintenanceineverydepots，respectively．Themodeswereconstructedon
6、thetransitionnetworkwiththetrainlinesasthenodesandthefeasibletransitionarcsasthesides，consideredthefirstlevelmaintenancerequirementsbothoncumulativeoperationtimeandmileage，traindiagramandtrain-setsconservationconstraintsandaimedtoCOVerthetimetablewithminimumnumberoftrain-sets．Inaddition，toimpro
7、vethesolvingefficiencyofthemodels，thispaperproposedtwotransitionnetworkconstructionstrategiestodecreasethenetworksizeandreducethenumberofconstraints．Finally,thispapersolvedthemodesonpracticaldatabyCPLEXsoftware．Theresultsshowthato
