运行速度在公路线形设计中的应用研究

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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