道路通行能力模型及其受车辆性能影响分析(1)

292Vol.29No.220104JOURNALOFCHONGQINGJIAOTONGUNIVERSITYNATURALSCIENCEApr.20102009－08－242010－01－101981－。[e-mail]。11211.4013312.610031、3、ABS、。U412U491A1674－0696201002－272－04MathematicalModelaboutRoadCapacityandAnalysisforInfluenceofAutomobilePerformanceZHOUJun1GANShou-wu1XUJin2CHENZhi-jun11.AutomobileEngineeringDepartmentChongqingCollegeofElectronicEngineeringChongqing401331China2.SchoolofTraffic＆TransportationSouthwestJiaotongUniversityChengdu610031SichuanChinaAbstractThemathematicalmodelabouttheroadcapacitywasbuiltbasedonthedrivingbehaviormodeoftheconservativepatternmoderatepatternandventuresomepattern.Accordingtotheacquiredmathematicalformulastheinfluenceofauto-mobiledynamicsperformanceandhandlingstabilityonroadcapacitywasanalyzed.ThatisreliablemechanismdesignandextensiveapplicationofadvancedtechnologiesjustlikeABSandautomatictransmissionwhicharebeneficialtominishdistanceheadwayandimproveroadcapacity.Saturatedtrafficcapacityofdepartingfromintersectionwillalsohaveanin-crementwiththeimprovementofautomobiles’acceleration.TherealizationofCruiseControlSystemandFormationofNav-igationinfuturemaycauseanessentialaugmentoftrafficcapacity.Theincrementofroadcapacitywillbecomeaninevita-bletrend.Keywordsroadcapacitymathematicalmodelautomobileperformanceautomobiletechnology、HCM1。2000“”19842－3。“”。4－5。Q-K-V6。7。40a20601400pcu/h20022200pcu/h2060～7060%。1SVCC=3600/S/Vpcu/h·ln。1.1“”St8－10St=V2t2a+L+T0×Vt11ht=Vt2a+LVt+T02dhtdVt=12a－LV2tdhtdVt=0Vtm=2槡aL3Vt=VtmhtVtm2htmin=2L槡a+T04Ccon=36002L槡a+T05StVtahtCconLL=LV+dd∈15LVT0T0=Tcle+Tlep+TmovTcleTlepTmov。5.8～6.5m/s2206011a=6m/s2L=8m3Vtm=10.2m/s=37km/hT0=0.6s4htmin=2.16s5Ccon=1660pcu/h·ln。1.2。4811a2a1St=V2t2×a2－a1a1a2+L0+β×Vκt+T0×Vt6βκa1a2L0=LV+0.5。6a2→+∞κ=061166a1≈a2a1a2610。6ht=Vt2×a2－a1a1a2+L0Vt+β×Vκ－1t+T07dhtdVt=a2－a12a1a2－L0V2t+κ－1β×Vκ－2t8dht/dVt=08VtmVtmhtminCmodCmod8a1a2a2a1a2－a1a1、a2a1=a26St=V2t2×Δaa2+L0+β×Vκt+T0×Vt9β=0.9κ=0.5T0=0.6sa=6.5m/s2Δa=3m/s2Vtm=49km/hhtmin=1.457sCmod=2400pcu/h·ln4123722。1.325%75%C=Ccon×25%+Cmod×75%=1660×25%+2400×75%=2215pcu/h·ln101132200pcu/h·ln910。1、91、9。2CinsqgλTsTs。。。。33.1。20ABSTRC4WS、14－15。、EFI。3.219aLβκT0。aT0Tcle。3.2.1aLABS。a119Δaa91。aaa≤fs×g。1L9βκa。3.2.2T0TcleT0、Tcle。。Tcle01、9Tcle×Vt。、TmovT0T047229Trep。T00.6s0.2s11660pcu/h·ln2040pcu/h·ln92400pcu/h·ln3380pcu/h·lnC=2040×25%+3380×75%=3045pcu/h·ln。3.30～100km/hTa。Ta10－2sTaTsTaTsqg。3.419VtVtVtmVtStStVtC=3600/S/V。ECUVQueStQueVtStQueVQue。StQueSt。4000pcu/h·ln。440a60%。19。、。。1TransportationResearchBoard.HighwayCapacityManualM.WashingtonD.C.TRBNationalResearchCouncil200020－66.2.J.200219475－78.3.J.20044280－84.4.J.2006327605－609.5.J.200523668－71.6.M.20022－60.7.J.20041182－86.8.J.200121168－71.9.J.2001342110－114.10.J.200422128－32.11.J.200114381－85.12.J.200120147－50.13.M.200578－106.14.M.200526－217.15.M.200058－93.5722