大学毕业设计英文翻译.docx

大学毕业设计英文翻译.docx

《大学毕业设计英文翻译.docx》由会员分享，可在线阅读，更多相关《大学毕业设计英文翻译.docx（14页珍藏版）》请在冰豆网上搜索。

大学毕业设计英文翻译

UrbanUndergroundRailroadarchtunnelConstructionTechnologyGroup

AbstractProjectinGuangzhouMetroLine,right-archconstructionmethodoftunnelstoexplore.SubwayConstructioninGuangzhouforthefirsttimeputforwardadouble-archtunneltosingle-holetunnelconstructiontechnology,andasingletypeofwallandsplitinthewallstructure,comparisonandselectionofTechnologysolutionswereobtainedtomeetthestructuralsafety,constructionsafetyandEconomicbenefitsofbetterTechnologysolutionsforthefuturedesignandconstructionofsimilarprojectstoprovidereferenceandreference.

Keywords:

double-archtunnelgroup;asingletypeofwall;constructionTechnology;splitinthewall.

Asthecircuitdesignrequirementssubwaytunnel,thetunnelstructureproducesavarietyofforms,rangingfromcross-sectionfromdouble-archandthethree-archtunnelcomposedofdouble-archtunnelsectioniscommonlyusedintheconnectionlinesandcrossinglines.Inthispaper,engineeringexamples,accordingtotunnelinwhichgeologicalconditions,durationrequirements,raisedthroughthecomparisonandselectioncanachieverapidconstructionandthepurposeofconstructioncostsavingsofthebestconstructionprograms.

1ProjectOverview

GuangzhouMetroLineRoadstationturn-backlineofsportsforsportsRoadstationafterthereturnline,structurecomplex,DK3016.047~037.157varyingcross-sectionsetthedouble-archstructure,three-archstructureoftunnels.Rangingfromcross-archtunnelexcavationspan20.1m,excavationheightof10.076m,cross-vectorratioof1:

0.5,afterliningaholespan5.2m,largeholes,afterliningspan11.4m,thewallthicknessof1.6m.Threedouble-archtunnelexcavationspan19.9m,excavationheightof7.885m,cross-vectorratioof1:

0.1.-Archtunnelsectionofrockfromtoptobottomare:

artificialfillsoil,red-alluvialsand,alluvial-alluvialsoil,riverandlakefaciessoil,plastic-likeresidualsoil,hardplastic-ahard-likeresidualsoil,allweatheredrock,strongweatheringrock,theweatheredlayerandthebreezelayer.Tunnelthroughtherockstrataaremorehomogeneous,theintensityhigh,carryingability,goodstability.Thicknessofthetunnelvaultcovering15.5~18m,ofwhichgradeⅣWairockvaultthickness5.6~7.6m.Double-archtunnelsegmentgroundwatertableis2.28~4.1m,mainlyQuaternaryporewaterandfissurewater.

Section2dual-archconstructionschemecomparison

Asthedouble-archtunnelsegmentstructuremorecomplex,thetunnelcross-sectionchangesinlarge,complicatedconstructionprocess,constructionwasverydifficult,theconstructioncycleislong,soIchoseagoodqualityandefficientcompletionoftheconstructionprogramsegmentarchtunnelconstructionisparticularlyimportant.Selectionofaconstructionprogram,themainconsiderationthefollowingaspects:

（1）constructionsafetyandstructuralsafety;

（2）constructiondifficulties;（3）theconstructioncycle;（4）cost-effectiveness.Basedonthesefourprinciples,throughtheconstructionofresearchanddemonstrationprogramtoselectthefollowingtwoprogramstocomparetheselectionoftheconstruction.

2.1asingletypeofwallconstructionplan

Theprogram'smainconstructionstepsandmeasuresareasfollows:

（1）Therightlineofdouble-archtunnelholewithinthereturnlinesideoftemporaryconstructionaccess,dual-archandthethree-archinthewallconstruction,iscompletedinatimelysupportforthewall,theconstructiontopreventbias.

（2）constructionofthewallliningiscompleted,accordingto"firstsmallthenbig,closedintoaring"principle,therightlinewiththestepmethodofconstruction,withCRDengineeringmethodreturnedafour-lanespantunnelconstruction.

（3）Whenthereturnlinesideoftheconstructiontothethree-archtunnelinthewall,theninaccordancewiththerightlineofthewallconstructionmethodandthethree-arch-archinthewallconstruction,duringwhichtherightlinetostopexcavationuntilthecompletionofconstructionofthewall.

（4）Thereturnlinesideofthewallconstructioniscompleted,therightlinetocontinuetomoveforwardtheconstruction.

Theconstructionmethodforthedomesticdouble-archtunnelofconventionalconstructionmethod,GuangzhouMetro,NanjingandBeijingMetrosubwaybothapplications,andcansecuresuccessfulcompletionoftheconstructionoftunnels.However,examplesofpastengineeringandconstructionTechnologyresearchcanbefound,theprogramhasweaknessesandshortcomings.

（1）Theprogramusedinthisproject,inashortspanof21.11mofdouble-archtunnel,thetunnel'sopeningbetweenthesupportingandsecondaryliningwillbeconvertedfourtimes,theconversiontoofrequently.

（2）wallandsideholescoveredbywaterprooflayeroftunnelliningconstruction,steelengineering,formwork,concretepouringrequiredmultipleconversions,theconstructionperiodupto2months.

（3）Theliningiscompleted,thewallofanti-biasmaterials,equipment,supportandinput,resultinginhigherconstructioncosts,Economicefficiencywilldrop.

2.2Thesplitinthewallconstructionplan

Theprogram'smainconstructionstepsandmeasuresareasfollows:

（1）rangingfromcross-double-archtunnelintotwosingle-hole,changetheformulafortheseparationwall,thefirstlineofone-wayright-forwardconstructionofthetunnel.

（2）threearchtunnelinthewalltomakethefirstnon-Shilining,accordingtosingle-lineworkingconditionthrough.

（3）therightlineoflarge-sectiondouble-archtunnelwallconstructionmethodadoptedinaccordancewithCRD.

（4）Thereturnlineisinaccordancewiththerightlineoftheoppositesideoftheconstructionsequenceofconstruction.

Adoptionofthisprogramisinfactaone-wayinaccordancewiththeconstructionoftwomethods,comparedwiththepreviousone,aftertheprogramhasthefollowingadvantages:

（1）reductionoftheconstructionprocesstospeeduptheconvergenceprocessconversion.

（2）reducetheconstructiondifficulty,shorteningtheconstructioncycle.

（3）reducetheconstructioncostsandimproveEconomicefficiency.

（4）changeasingletypeofwalltoseparatethewall,completelysolvedthestructureofdouble-archtunnelwaterproofingdefects.

（5）Thethree-archtunnelinthelatterpArtoftheconstructionhole,equivalenttolarge-spanrocktunnelsreservedforthecoreisconducivetobothsidesofthedouble-archtunnelconstructionsafety（Table1）.

Section3three-archconstructionplan

Right-linedirectaccesstothreedouble-archtunnel,theSupportparameterstotheoriginaldesignsforgratingerectionofthewholering,accordingtodesignthewholeringofshotcrete,andenhancetheboltatthewallvaultsettings（returnrightsideTongLineConstructionmethod）,wallconstructioninthetunnelwhenyouneedtogetridofOffice,locatedataverticalgrilljointsstrengthenedbeam.

Strictcontrolofexcavationfootageofeachcycle,gridspacingof0.6m/Pin.Weakinthewallexcavationusingmillisecondblastingprogram（conditionalmaximizetheuseofstaticblastingprograms）,minimizethewallrockandtheliningofthetunnelhasbeendisturbed,toensureconstructionsafety.Thecompletionofexcavationinthewallimmediatelyafterthesecondarylining.Afterthecompletionofconstructionofthewallinwallvoidsofthebackfilling,plusjacksupports.Thesideoftheconstructioniscompleted,carryouttheothersideofthewallconstruction.Whenbothsidesofthewallconstructioniscomplete,inatimelymanneronbothsidesofasingle-holetunnelsecondarylining,andthenproceedtothree-archtunnelexcavationandliningofthemiddleofrock.Construction,specialattentionshouldbethreearchtunnelinthewallatthesettlementandconvergencedeformation,suchastheunusualphenomenon,animmediatereinforcement.

4constructionoftheforcestructureofBehaviorAnalysis

Acrosstherangeofthedouble-archedwallcanceled,changedtoseparatethewall,inthedomesticurbanundergroundrailwayengineeringhasnotyetbeenasimilarengineeringdesignandconstructionexperience,thereisnosuchtunnelstructuredesign,andthereforethestructureissafe,aswellasthecourseofconstructionconversionprocessofconstructionissafe,theprogramwillbethefocusofthestudy.

ApplicationofANSYSfiniteelementsoftwareforcommonproceduresrangingfromcross-archtunnelnumericalsimulation,usingstratigraphic-structuralmodelofthestructureofthetunnelbytheforceanddeformationanalysis（Figure1,Figure2,Figure3）.Thescopeofthehorizontaldirectiontakenbyforcealongthedirectionofthetunnelcross-sectiontocross-hole3timesthelimit,takingthetopoftheverticaldirectiontothesurface,thebottom-holespanto3timesthelimit,unitmodelusestheDPformationofelastic-plasticmaterialentity,thetunnelLiningwithelasticbeamelementsimulation,beamelementsandsolidelementsusedtoconnectcouplingequation.ThroughtheanalysisofdatainTable2wecanseethatduringtheconstructionoflargetunnelsinagreaterimpactonsmalltunnel,ifasmallsectionofthetunnelwiththenecessarystrengtheningofmeasuresandcontroltheremovaloftemporarysupporttothelongitudinalspacing,theprogramisusefulandfeasibletoThe.

5Constructionofkeytechnologiesandcorrespondingmeasures

Archtunnelconstructionsegmentisrequiredonastrictconstructionorganizationandstrongtechnicalassurancemeasurescarriedoutunderthegoodjobinorganizingtheconstructionofstepstopreparetheconstructionofavarietyoftechnicalpreventivemeasuresarekeytosuccess.

5.1p