资源描述:
《道路工程(专业英语)》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、RoadworksRoadsresultingfromhumanactivitiesassociatedwith,Andtopromotesocialprogressanddevelopment,Isasymbolofhistoryandcivilization、Asignofscientificprogress,Theoriginalroadisformedbypeopletramplingtrails。Aftertherequirementshaveabetterroad,Borrowpitfill,FramewoodacrosstherivertoEasyaccess。Mid-18
2、thcentury,ModernroadconstructionbeganinEuropetherise.In1747thefirstbridgetoestablishtheschoolinParis.TeresaFrenchP.-M.-J.cover、BritishMarkT.TelfordandJ.L.whenotherEngineersproposeanewpavementstructuretheoryandpractice,Laidthefoundationofmodernroadconstruction.1883-1885GermanyG.W.Daimler、C.F.Benzi
3、nventedthe道路伴同人类活动而产生,又促进社会的进步和发展,是历史文明的象征、科学进步的标志,原始的道路是由人践踏而成的小径。以后要求有更好的道路,取土填坑,架木过溪,以利通行。18世纪中叶,现代道路工程开始在欧洲兴起。1747年第一所桥路学校在巴黎建立。法国P.-M.-J.特雷萨盖、英国T.特尔福德和J.L.马克当等工程师提出新的路面结构理论和实践,奠定了现代道路工程的基础。1883~1885年德国car,Createdbyautomobiletrafficandnewroadworksinthemodernera.1931~1942,Germanybuiltthehighwa
4、ynetwork,Providesfortheautomotivetrafficsafety,speed,economy,comfortdrivingconditions.SubgradeRoadbedisthemainroute,isthebasisoftheroadandthevehicleloadandroadsurfacetobear.Itscross-sectionofembankmentfillandcutintotheembankment-typesituation,cuttingstyle,half-filledandhalf-dug-stylecategories.Sh
5、oulderonbothsidesoftherembankmentiswithinthezoneedgeforsupportingtheroad,parkedvehiclesorfortemporarypedestrianuse.Earthworkembankmentintodifficultybyexcavationearthworks(Cultivation,ordinarysoil,hardsoilthree)andRockEngineering(softrock,hardrocktimes,G.W.戴姆勒、C.F.本茨发明了汽车,开创了以汽车交通为主的现代道路工程的新时代。193
6、1~1942年德国建成高速公路网,为汽车交通提供了安全、迅速、经济、舒适的行车条件。路基工程路基既是路线的主体,又是路面的基础并与路面共同承受车辆荷载。路基按其断面的填挖情况分为路堤式、路堑式、半填半挖式三类。路肩是路面两侧路基边缘以内地带,用以支护路面、供临时停靠车辆或行人步行之用。hardrockthree).Subgradeinroadconstruction,Largeprojects,coveringawide,Oftenthekeytocontroltheconstructionschedule,Sorequirements:①asfaraspossiblealongwith
7、acombinationofirrigationandwaterconservancyconstructionandstrivetosavespace;②inaccordancewithstandarddesign,strictcontrolofconstructionquality,toensuresufficientstrengthandroadbedstability;③strengtheningworkstoimproved