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1、附录外文资料Theroad(highway)Theroadisonekindoflinearconstructionusedfortravel.Itismadeoftheroadbed,theroadsurface,thebridge,theculvertandthetunnel.Inaddition,italsohasthecrossingoflines,theprotectiveprojectandthetrafficengineeringandtheroutefacility.Theroadbedis
2、thebaseofroadsurface,roadshoulder,sideslope,sideditchfoundations.Itisstonematerialstructure,whichisdesignedaccordingtoroute'splaneposition.Theroadbed,asthebaseoftravel,mustguaranteethatithastheenoughintensityandthestabilitythatcanpreventthewaterandothernat
3、uraldisasterfromcorroding.Theroadsurfaceisthesurfaceofroad.Itissingleorcomplexstructurebuiltwithmixture.Theroadsurfacerequirebeingsmooth,havingenoughintensity,goodstabilityandanti-slipperyfunction.Thequalityofroadsurfacedirectlyaffectsthesafe,comfortandthe
4、traffic.Theroutemarkingisonekindoftrafficsafetyfacilitypaintedbyoilpaintormadebytheconcreteandtilesonhigh-level,lesshigh-typesurface.Itsfunctioniscoordinatingthesigntomaketheeffectivecontroltothetransportation,directingthevehiclesskiproadtravel,servingunim
5、pededandthesafepurpose.Ourcountry’sroadroutemarkinghasthelanemedianline,thetrafficlaneboundary,thecurbline,theparkingline,theconductioncurrentbelt,thepedestriancrossingline,thefourcornerscentercircle,theparkingazimuthline.Theroutemarkinghasthecontinualsoli
6、dline,thebrokenlineandthearrowindicatoranditscolorusesthewhiteortheyellow.Thearchofbridgeisthestructurewhichstridesoverrivers,mountainvalleyandchannel.Itismadegenerallybysteelrod,concreteandstone.Thetunnelisthecavewhichconnectsbothsidesoftheroad.Thetechniq
7、ueofthisconstructionisverycomplex,thecostoftheprojectsishigherthancommonroad.However,itreducesthedrivingdistancebetweentwoplaces,enhancesthegradeofthetechnicalinbuildingtheroadandguaranteesthecarscandrivefastandsafely,thusreducesthecostoftransportation.The
8、protectiveprojectistoprotectandconsolidatetheroadbedinorderthatitcanguaranteetheintensityandthestabilityoftheroad,thusmaintainstheautomobiletopassthroughsafely.Inordertoguaranteethatsafeoperationofthehighwayt
