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1、毕业设计外文翻译题目跨越世纪之桥专业土木工程(桥梁)班级2007级3班学生陈博指导教师刘东重庆交通大学2011年6月ABridgeForAllCenturiesAnextremelylong-andrecordsetting-mainspanwasdesignedforthesecondbridgetoacrossthePanamaCanalinordertomeettheowner’srequirementthatnopiersbeplacedinthewater.Becausenodisruptionofcanaltrafficwaspermitt
2、edatanytime,thecable-stayedbridgeofcast-in-placecancretewascarefullyconstructedusingthebalanced-cantilevermethod.In1962,theBridgeofAmericas(PuentedelasAmerica)openedtotraffic,servingastheonlyfixedlinkacrossthePanamaCanal.Thebridgewasdesignedtocarry60,000vehiclesperdayonfourlanes
3、,butithasbeenoperatingaboveitscapacityformanyyears.Toalleviatebottlenecksontheroutethatthebridgecarriesoverthecanal-thePan-AmericanHighway(Inter-AmericanHighway)-andpromotegrowthonthewesternsideofPanama,thecountry’sMinistryofPublicWorks(MinisteriodeObrasPublicas,orMOP)decidedtob
4、uildanewhighwaysystermlinkingthenorthernpartofPanamaCity,ontheeasternsideofthecanal,tothetownofArraijan,locatedonthewesternsideofthecanal.TheCentennialBridge–namedtocommemorate100yearsofPanamanianindependence-hasnoebeenconstructedand,whenopend,willcarrysixlanesoftraffic.Thiscabl
5、e-stayedbridgeofcast-in-placecancretefeaturesamainspanof420m,thelongestsuchspanforthistypeofbridgeintheWesternHemisphere.In200theMOPinvitedinternationalbridgedesignfirmstocompeteforthedesignofthecrossing,requestingatwo-packageproposal:onetechinical,theotherfinancial.Atotalofeigh
6、tproposalswerereceivedbyDecember2000fromestablishedbridgedesignfirmsallovertheworld.Aftershort-listingthreefirmsonthebasisofthetechnicalmeritsoftheirproposals,theMOPselectedT.Y.LinInternational,ofSanFrancisco,topreparethebridgedesignandprovidefieldconstructionsupportbasedonthefi
7、rm’sfinancialpackage.TheCentennialBridgedesigeprocesswasuniqueandaggressive,incorporatingconceptsfromthetraditionaldesign/build/bidmethod,thedesign/buildmethod,andthesa-calledfast-trackdesignprocess.Tocompletetheconstructionontime-thatis,withinjust27months-thedesignofthebridgewa
8、scarriedouttoalevelof30percentbeforeconstructio