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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.Becausenodisruptionofcanaltrafficwasper
2、mittedatanytime,thecable-stayedbridgeofcast-in-placecancretewascarefullyconstructedusingthebalanced-cantilevermethod.In1962,theBridgeofAmericas(PuentedelasAmerica)openedtotraffic,servingastheonlyfixedlinkacrossthePanamaCanal.Thebridgewasdesignedtocarry60,000vehiclesperdayonfourl
3、anes,butithasbeenoperatingaboveitscapacityformanyyears.Toalleviatebottlenecksontheroutethatthebridgecarriesoverthecanal-thePan-AmericanHighway(Inter-AmericanHighway)-andpromotegrowthonthewesternsideofPanama,thecountry’sMinistryofPublicWorks(MinisteriodeObrasPublicas,orMOP)decide
4、dtobuildanewhighwaysystermlinkingthenorthernpartofPanamaCity,ontheeasternsideofthecanal,tothetownofArraijan,locatedonthewesternsideofthecanal.TheCentennialBridge–namedtocommemorate100yearsofPanamanianindependence-hasnoebeenconstructedand,whenopend,willcarrysixlanesoftraffic.This
5、cable-stayedbridgeofcast-in-placecancretefeaturesamainspanof420m,thelongestsuchspanforthistypeofbridgeintheWesternHemisphere.In200theMOPinvitedinternationalbridgedesignfirmstocompeteforthedesignofthecrossing,requestingatwo-packageproposal:onetechinical,theotherfinancial.Atotalof
6、eightproposalswerereceivedbyDecember2000fromestablishedbridgedesignfirmsallovertheworld.Aftershort-listingthreefirmsonthebasisofthetechnicalmeritsoftheirproposals,theMOPselectedT.Y.LinInternational,ofSanFrancisco,topreparethebridgedesignandprovidefieldconstructionsupportbasedont
7、hefirm’sfinancialpackage.TheCentennialBridgedesigeprocesswasuniqueandaggressive,incorporatingconceptsfromthetraditionaldesign/build/bidmethod,thedesign/buildmethod,andthesa-calledfast-trackdesignprocess.Tocompletetheconstructionontime-thatis,withinjust27months-thedesignofthebrid
8、gewascarriedouttoalevelof30percentbeforeconstru
