©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(,110005)(JTGD62-2004)T(JTGD62-2004),,,(DIN1075),,,1:,,(),,,:(1),:,;(2),(3)2(JTGD60-2004):2.1,(1),,(2):,,,,,,,,,,,(3)1510©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:(),,,AIIt,(),,,,(),,,:,,,,,:,2.2(1),,(2)(),,,,(3)85(),(JTGD60-2004):,,,,()=kc+ptkc=MkI0y0(1)kc();pc=NpAnNpepnInMp2Inyn(2)pc:,;(1)I0;(2)In,An,3,,,4.2.3:abmibi,a0.25l;c=0.1l;ac,Sbifbi(1)SS,,S,,,,,,,252007©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(2)50m,c5m,a2.54m,47m,ac,,acf,,(3),,:,,,,,4,,:(1)(2),,(3),,(4)S,,,,,1(JTGD62-2004)2(JTGD60-2004)UnderstandingsofEffectiveFrangeWidthofBeamAbstractThepaperexpoundsauthorsunderstandingsofthecalculationofeffectivefrangewidthofT-beamandboxbeamaswellastheappliedoccasiontoit,whicharestipulatedinDesignSpecificationforRein2forcedConcreteandPrestressedConcreteCulvert(JTGD62-2004)KeywordsFrangeeffectivewidthThelimitstateofbearingcapacityThelimitstateundercircumstancesofnormalapplication(92)4TransCADGIS,,TransCADApplicationStudyofGravitationalModelinTransCADAbstractThepaperdiscussestheworkingprinciplesofgravitationalmodelinTransCADsoftware.AimingattrafficfeaturesinsmallandmediumcitiesinYunnanProvince,thepapermakesalsoanapproachtoutilizeTran2sCADgravitationalmodeltofinishthewholeprocessofcalibratingtheparametersofgravitationalmodelandforecas2tingthetrafficdistribution.KeywordsGravitationalmodelTransCADTripimpedanceTripgenerationsTripattractions3510: