Properties of train traffic flow

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1、Chin.Phys.BVol.21,No.7(2012)070502PropertiesoftraintrafficflowinmovingblocksystemWangMin(王敏),ZengJun-Wei(曾俊伟),QianYong-Sheng(钱勇生),LiWen-Jun(李文俊),YangFang(杨芳),andJiaXin-Xin(贾欣欣)SchoolofTrafficandTransportation,LanzhouJiaotongUniversity,Lanzhou730070,China(Received26September2011;revi

2、sedmanuscriptreceived23November2011)Thedevelopmentdirectionofrailwayistoimprovethecapacityandtheservicequality,wheretheservicequalityincludessafety,schedule,highspeed,andcomfort.Inlightoftheexistingcellularautomatonmodels,inthispaper,wedevelopamodeltoanalyzethemixedrunningproces

3、sesoftrainswithmaximalspeedsof500km/hand350km/hrespectivelyinthemovingblocksystem.Intheproposedmodel,weestablishsomesoundrulestocontroltherunningprocessoftrain,wheretherulesincludethedeparturerulesintheintermediatestations,theovertakingrules,andtheconditionsofspeedlimitationfort

4、rainstoppingatastationorpassingthroughastation.Withtheconsiderationofthemixedratioandthedistancebetweentwoadjacentstations,thepropertiesofthetraintrafficflow(includingcapacityandaveragespeed)aresimulated.Thenumericalresultsshowthattheinteractionsamongdifferenttrainswillaffectthecapac

5、ity,andaproperincreasingofthespatialdistancebetweentwoadjacentstationscanenhancethecapacityandtheaveragespeedunderthemovingblock.Keywords:traintrafficflow,movingblock,cellularautomatonmodel,simulationPACS:05.40.–a,89.40.Bb,05.60.–kDOI:10.1088/1674-1056/21/7/0705021.Introductionatte

6、ntionhasbeenpaidtodevelopingmodelsandmethodstostudyhowtoreasonablydesignthetrainTodate,moreandmorepeoplehaveempha-timetableandhowtoimprovethecapacityofthesizedthetravelspeedandtheservicequalityofanyrailway.[58]Meanwhile,awealthofresearchresultstravelmode.However,thedemandoftran

7、sportationshowthatthecellularautomaton(CA)issimpleto(includingpassengerandfreight)cannotbesatisfiedimplementoncomputers,providesasimplephysicalbytheexistingrailwaysystems,whichhasproducedpictureofthesystem,andcanbeeasilymodifiedtomanyeconomiclossesinChina.[1;2]Inordertoreducedealw

8、ithandsimulatedifferentaspectsofnonlineartheecon