外文翻译--浅谈我国混凝土简支梁桥施工技术与发展.doc

专业文献翻译题目：TalkingaboutChinasconcretesimplebridgeconstructiontechnologyanddevelopment系：建筑工程学院专业：土木工程班级：学生姓名：导师姓名：完成日期：TalkingaboutChinasconcretesimplebridgeconstructiontechnologyanddevelopmentWiththeadvancesintechnology,theoriginalconcretesimplebridgehasbeenthemethodofclassificationdoesnotreflectadvancesintechnology,forthesakeofitmaywishtosupportin-situintolaw,theentireholeandtheerectionofmobiledie-lawcategory.Thispaperontheconcretesimplebridgeoftheconstructionmethodattheintroductionandconclusion,theconstructionprogrammewithaviewtotheformulationandimplementationoftheguidingrole.1stentin-situlawStentin-situmeansthatthelawunderthebeamErectionstenttosupportthetemplateofreinforcedconcretepouringandotherworkingload,thelastbridgewiththeconstructionmethod.Althoughthestentisatemporarystructureconstruction,butitaffectsbodymassandbeamconstructionsafety,mustbetakenseriously.Generalshouldnotethefollowingissues:(1)sufficientstrength,rigidityandstability.Supportmustbereliablywithstandtheconstructionprocessmayhaveinthevariousloads,andtheloadtypeandsizeoftheestimateisthekey,accordingtoconstructionspecificationsandconstructionexperiencetobeconfirmed；stenttobebasedonreliable,basedontheresultsofthestent,forthemostAdverseconditionsonthebasisofdesign,andthefoundationtocarryoutthenecessarytreatment；temporarystructureinthecomponentconnectionistoensurethatthekeytooverallstability,wemustensurethattheconnectionpointofsecurity,andhaveenoughvertical,horizontal,rampsconnectingrodPiecesandpreventtheemergenceoftheoverallfailureorpartialfailure.Generallyspeaking,thestrengthofsupportmoreeasilybeguaranteed,butwiththestabilityoftenoverlooked.Thereasonisthatthestructureofthestabilityofthemoredifficulttocalculate,butwiththeemergenceoflarge-scalecommercialsoftware,theproblemwasgraduallyresolvedmoreimportantforthestent,whenthereisnoabsolutegrasponstability,simulationanalysisshouldbeconducted.(2)determinetheelevationmodellegislation.Mostbridgeshaveadesigninthepre-camber(Changsaidthedesignofpre-arch),andwillsupportavarietyofloadsintheroleofdeformationandthereforehavetoconsidertheimpactthatthestentdeformationOxfamThepre-camber.Duringtheconstruction,mustbecalculatedpre-constructionanddesignofthearch-arch,todeterminethecorrectelevationmodellegislation,thusguaranteeabridgetomeetthedesignandspecificationsoftheline.ToobtainamorepreciseconstructionPre-camber,ifnecessary,tosupportpre-pressuretesting,todeterminethesupportofnon-elasticdeformationandelasticdeformationvalues,tovalidateconstructioninthecalculationofthevariousparameters.(3)-dumpingequipment.Tosetupthein-situstent-disposalequipment,shouldbecharged-symmetrical,uniform,themainbeamtopreventapartialstress.Thepastwithequipmentcommonlyusedfordumpingsandwedgeandextinguishers,andJacknowusestandardequipmentwithdedicatedequipment.Althoughthestructuredidnotsupportthenumberofchanges,buttheequipmentusedbythestentthanthelastgreatchangeshavetakenplace.Nowcommonlyusedstandardequipmentfightstentgroup,suchassteelpipebowlbuttonupscaffolding,universalmembers,Baileybeam,June4military-beam,entrysteeltrussgirder,August7-steelgirder,6August3and5TunTun,andsoon,allconstructionunitsaccordingtotheiractualsituationinwhichtheuseofoneormoreofthefightstentgroup.Usingstandardequipmentgroupfightstent,theconstructionspeed,high-intensitysupport,goodstability,andaAbettereconomicperformance.Constructionofthebridgeinthecity,thebridgegenerallyisnothigh,sousealargebowlbuttonuppipescaffolding,touseitsadjustableentrustedwiththeelevationofadjustmentandhold-offisveryconvenientinaTrafficflow,theuseofbeamsupportandmilitarypierwithacertainclearance.Supportcast-in-placemethod,thekeyistofightstentgroup,shouldgivefullconsiderationtoloadandstrengthenstructuralconnections,adetailedanalysistoensureconstructionsafetyandquality.2-erectionoftheentirelawWhole-buildingmethodisusedfactory-prefabricatedbeam,beamwillbetransportedtothebridgesiteandinstallinplaceoftheway.Suchmethodsintheerectionofthemaintruckcrane,gantrycraneerectedacrossthebridge,bridge-buildingspecies.Whenthewaterunderneathandrelativelyflat,long-spanbeamcanbeusedforsmalltruckcrane,long-spanbeamorthebeamofaheavier-spanbridgecangantrycrane.Whenthebridgetrafficshouldnotbeinterference,orbridgedeepditchinthewater,andotherconditionsdonotallowthescenewhenitneedsatop-thatis,abridge-building.Inwhatway,shapeaccordingtothesite,equipmentandbeam-weight,comparison,theerectionofamoreeconomicway,thefollowingmajorhighwaybridgeanditsturntothedomesticBridge-assembledandcanbedividedintostandardTwo.Mainbridgeassembledusingstandardequipment,tobebasedonsizeandweight-beambridgemachineassembledatthemainbeam(Introductionbeam),correspondingtotheconfigurationofliftingupandrunninginstallations,leadingtoerectionofLiang.I.LiangusedequipmentfortheBailey-general,universalmembers,militarybeam,Baileyguided-spanbeambridgeasapplicableinthefollowing30m；universalmembersguidedbeambridgingamoreflexible,largerscopeofapplicationofthespan,butRodboltsforthefightevenlargergroupworkload；militaryLiangLiangBridge-guidedgroupsfightone,andasingle-layerordouble-militaryfightGroupI.LiangLiang,itsapplication-spanFanwidely,from16mto50mareCan,liftingcapacitycanbeguidedthroughthebeambyafewfilmsmoreeasilybeguaranteed7.AssembledBridge-thesuddenadvantageofconvenienttransportation,thegroupfightsimple,Jianzuootherstructuralweaknessessothatthedegreeofmechanizationisnotstandardbridgemachine,butbecauseofthesingleeconomicgoodworksinourcountrytoplayabridge-buildingFocusonuse.Inthestandardbridgemachine,in1992developedaJQG80highwaybridgemachine,thenhaveproducedaseriesofbridgingDF-EBGseriesofbridges,erectedtobeam-tonnage4001600kspanfortheerectionof2050m,bothFromthestructuralformof-wayorhavedifferentlevelsofinnovation.Thecurrentstandardofthebridgestructureformthemaindifferenceisthatbridgingtheverticalplaneonthewaymajorshiftwalkerandverticalshiftthecantileverrailline-shiftkindofvertical.largestcantileverrailline-verticalshiftmeansalowcenterofgravity,lightweight,canbuildasmallerradiusofthecurvebridgesmerits,itsshortcomingsarecantileveredverticalaxleloadlargershiftinthecourseofthebare-beammayhavebeencausedHarm,tobeusedtoloaddistributionmethodssuchastheprotectionofbarebeams.Andstep-verticalshiftthewayforconstructionofbridgeload-onlyroleinabare-beambridgeandthefirststage,withouttheaboveproblem；itsshortcomingsistheweightofthestructureThehighcostoferectingaradiusofthebridgeisalsolarger,thefocusofsomeofthecurrentrelativelyhighstandardofbridgeinthemoreadvancedsingleDJ