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1、附录外文资料Theroad(highway)Theroadisonekindoflinearconstructionusedfortravel.Itismadeoftheroadbed,theroadsurface,thebridge,theculvertandthetunnel.Inaddition,italsohasthecrossingoflines,theprotectiveprojectandthetrafficengineeringandtheroutefacility.Theroadbedisthebaseofro
2、adsurface,roadshoulder,sideslope,sideditchfoundations.Itisstonematerialstructure,whichisdesignedaccordingtoroute'splaneposition.Theroadbed,asthebaseoftravel,mustguaranteethatithastheenoughintensityandthestabilitythatcanpreventthewaterandothernaturaldisasterfromcorrod
3、ing.Theroadsurfaceisthesurfaceofroad.Itissingleorcomplexstructurebuiltwithmixture.Theroadsurfacerequirebeingsmooth,havingenoughintensity,goodstabilityandanti-slipperyfunction.Thequalityofroadsurfacedirectlyaffectsthesafe,comfortandthetraffic.Theroutemarkingisonekindo
4、ftrafficsafetyfacilitypaintedbyoilpaintormadebytheconcreteandtilesonhigh-level,lesshigh-typesurface.Itsfunctioniscoordinatingthesigntomaketheeffectivecontroltothetransportation,directingthevehiclesskiproadtravel,servingunimpededandthesafepurpose.Ourcountry’sroadroute
5、markinghasthelanemedianline,thetrafficlaneboundary,thecurbline,theparkingline,theconductioncurrentbelt,thepedestriancrossingline,thefourcornerscentercircle,theparkingazimuthline.Theroutemarkinghasthecontinualsolidline,thebrokenlineandthearrowindicatoranditscolorusest
6、hewhiteortheyellow.Thearchofbridgeisthestructurewhichstridesoverrivers,mountainvalleyandchannel.Itismadegenerallybysteelrod,concreteandstone.Thetunnelisthecavewhichconnectsbothsidesoftheroad.Thetechniqueofthisconstructionisverycomplex,thecostoftheprojectsishigherthan
7、commonroad.However,itreducesthedrivingdistancebetweentwoplaces,enhancesthegradeofthetechnicalinbuildingtheroadandguaranteesthecarscandrivefastandsafely,thusreducesthecostoftransportation.Theprotectiveprojectistoprotectandconsolidatetheroadbedinorderthatitcanguarantee
8、theintensityandthestabilityoftheroad,thusmaintainstheautomobiletopassthroughsafely.Inordertoguaranteethatsafeoperationofthehighwayt