运行速度在公路线形设计中的应用研究

运行速度在公路线形设计中的应用研究

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时间:2019-05-10

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1、东南大学硕士学位论文运行速度在公路线形设计中的应用研究姓名:田兆丰申请学位级别:硕士专业:道路与铁道工程指导教师:陈飞20070101AbstractThetechnicalstandardofhighwayalignmentdesignofOBrcountrytakethedesignspeed∞themaindesignparameter,butinfacttravelspeedcanbeaffectedbyroadcharacteristics(alignmentconditions,pavementcondition,weathercon

2、ditions,environmentalconditionandtrafficconditions),aswellasthevehicleperformance.Investigationoftmvelspeedrevealsthatthespeedofvehicleisoftenhigherthanthedesignspeed,whichissupposedtobemaximalsafespeedonacertainroadsegment.Soitwillcausethesafetyproblem.Nowtheoperatingspeedwi

3、lltakeplacethedesignspeedasthemaindesignparameter.Sothat,inthesightofpresentsituationofhighwayalignmentdesign.atthebackgroundofreviewingandanalyzingtheresearchproductioninsideandoutside,thispaper,aimingatexaminingthedesignqualityofcrossandverticalsection,directingthetakingofa

4、lignmentdesigngeometryindex,controllingautomobilespeedandreducingtrafficaccident,putforwardaresearchtopiconoperatingspeedandapplyingofoperatingspeedtohighwayalignmentdesignsoastorealizethebasicrequirementofsafedriving.Accordingtothelimitationofspeeddesigninginhighwayalignment

5、design,thispaperputsforwardthatapplyofoperatingspeedtohighwayalignmentdesign.Onthebasisofthepresentdesigningmethod,thedesignofoperatingspeedalignment,byincreasingthestepsofthespeedcalculation,istoexamineandmodifytheoriginalgeometricalindexsoastogetagraphofcontinual,balancedan

6、dharmoniouschanging,whichbecomesthefoundationofgettingothertechmcalindexesandsettingequipmentalongthehighway.Thepredictingmodelofoperatingspeedissetuponthebasisofpreliminarygeometricalindex,fromthepointofmotivepoweroftheautomobile,deducethecalculatingformulaofoperatingspeedin

7、thehorizontal、verticalslopeanderectcurve.throughconsiderallthefactorsofoperatingspeedsynthetically.ThispaperadoptsVisualc++6.0.MFCandObjectARX.compilespredictingmodelofoperatingspeed,consideringtheshiftingofpracticingcar,finallycarrysoutautomaticalcalculationofoperatingspeeda

8、ndachieveschartautomatically.AndprovestheCOITeC廿:IeSSandreliabilityo

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