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ID:36467896
大小:2.49 MB
页数:70页
时间:2019-05-10
《运行速度在公路线形设计中的应用研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
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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