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1、西南交通大學(xué)本科畢業(yè)設(shè)計外文資料翻譯年級:2006級學(xué)號:姓名:郭鵬專業(yè):土木工程指導(dǎo)老師:楊榮山2010年6月西南交通大學(xué)本科畢業(yè)設(shè)計第11頁英文翻譯原稿Prestressed?Concrete?the?extensive?applicationPriestessesconcreteisusedinconcretestructuresunderloadbeforetheproductionphase,theuseofpre-stageofthetensionzoneimposedstress,thestresscausedby
2、anartificialstate.Whenthecomponentsusedtobearaloadandstress,firstofalltooffsetthepre-stressconcrete,andthenastheloadincreases,theRajahareaofconcreteproducedstress.Therefore,concretecracksmaydelaytheemergenceandimplementation,tomeettheapplicationrequirements.Instructu
3、ralmemberstobearthisloadbeforethepre-tensionzoneimposedstressoftheconcretestructuralmembers,calledonpriestessesconcretestructures.China'suseofpriestessesconcretesleepermorethan30years,theconcretesleeperinalotofdamagerelatedtotrafficsafety,whichisoftenconsideredfailur
4、essleeperoperationshouldbereplacedontheline.Buttoputthenewsleeper,inadditiontore-create,butalsohandling,transportandwenttothelineonthepillow-for-work,notonlyneedtospendalotofmanpowerandmaterialresources,andsometimesimpactontraffic,thecostisoftenasleeperitselfCostFour
5、tofivetimes.Sleeperasapriestess’sconcretestructure,cracksaredifficulttoavoid,priestessesconcretesleeperonthecausesanddangersofcracksonhowthepreventionandcontrolofcracks,concretesleepertoimprovethedurabilityofthestructure,toextendthelifeofsleeper,Willbeveryimportant.1
6、.causescracksinconcretesleeperCracksinconcretesleepercanbegeneratedfromthestructure,processes,materialsandotheraspectsof,orfromthedesign,manufacture,laying,useofresearch.Here,onlyphysical,chemical,mechanicalpointofviewforanalysis.1.1??mechanicalfactors西南交通大學(xué)本科畢業(yè)設(shè)計第11
7、頁ConcretesleepersufferedmomentnotonlythesizeandZhenhangdynamicpressure,butalsowiththesuboccipitalBallastsupportofthestate.Thelayingoftheoriginaldesignrequirementsandconservationshouldbethemiddlepartofthesleeperemptied400ram,hollowedoutpartofBallasttopofthepillowatthe
8、endshouldbelessthan30mm,toavoidnegativemomenttoolargeapillowintheupperhorizontalcleft.Inrecentyearsdonotrequirethemiddleemptied,the
