深州京九铁路桥洞加宽

本文格式为Word版，下载可任意编辑——深州京九铁路桥洞加宽深州探析立交桥连接线

BigwidehighwayShenZhouconnectionlineintheBeijing-Kowloonrailwaybridgeengineeringdesigninthispaper

Wangtao

ChinarailwayfifthtoinvestigatedesigngroupCo.,LTD.Thebridge

the

ThispapersummarizesthebigwidehighwayShenZhouconnectionlineintheBeijing-Kowloonrailwaybridgeengineeringcharacteristics,introducestheconstructionprocessofthetechnologyandmethod.Analysestheswiveloverpassandspanrailwaybridgeunderinthedesigncharacteristics,summarizesthebigwidehighwayShenZhouconnectionlineintheBeijing-Kowloonrailwaybridgeengineeringhaveexperience.

Keywords:wearrailway,theswiveloverpass,bridgedesign

1.Theintroduction

Highwayunderwayacrossthewearofrailway,withsafety,timeisshort,thecostofrailwayoperationeffectofprovinces,theadvantagesofsmall,bigwidehighwayShenZhouconnectionlineintheBeijing-Kowloonrailwaybridgeengineering,markedtheoverpassengineeringinChinaandaprogress,researchandanalysisofitsdesignandlearnfromthesuccessfulexperience,andinthefuturewebridgedesignisofgreatsignificance.

ThispaperthroughanalyzinglargewidehighwayShenZhouconnectionlineweartheBeijing-Kowloonrailwayconstructionmethodsoftheoverpassdesign,forthisbridgedesigncharacteristics,todesignthesamebridgeafterhasthisverygoodreferencevalue.

2.Thegeneraldesign

Accordingtotheroad,railwaycondition,theconditionsuchasterrainandobject,thedesignisasfollows:

RoadandraillinesintheintersectionofrailwaylinesforK237mileage+150.1,roadsandrailwaylinescenterlinetheAngleofcutfor90°.

Theframeworkstructureone-by-one,netcrossfor16m,newframebridgeandrailwaylinesJiaoJiaocenterlinefor90°.Framebridgeatthetopoftherooffromrailwayrailsunderside0.8m.Framebridgestructureatotalheightof8.6m,thestructureisclearheightof6.5m,1.0mthickroofandfloorthick1.1m,1.0mthickwall,roofhauncheduse0.5x1.5m,floorhaunchedalluse0.2x0.2m,framebridgemainbodylongfor15.0m.

FramebridgestructureclearheightofconsideringtheZongPoroadcross-sectionalsloperoof,haunched,pavement,shopoutfit,topintoerror,andconstructiontechnology,theeffectsoftheroadinplaceafterthetopintoformation,motorlaneuseclearheightofmorethan5.1m.

FramebridgemainfrontbladeAnglelong5m,themainbodyofthewallafterthelong,3.5m,endwalllateralsidewalkcantileverplatelength2m.FramebridgeinjackinginplacewillbladeAngleaccordingtosubjectstructureforwalltogether,bothsidesmeetgravityretainingwall.

3,framebridgesubsidiarystructureandauxiliaryproject

1,agravityretainingwallgateway,toensuresafetyandstabilityofroadbed.

2,framebridgeQiaoOuonbothsidesandroadbedintopintobeforethegroutingstrengtheningpreventsubgradeintopintoprocesscollapsed;Framebridgeinthetopsidessubgradeintoaftergroutingconsolidation,framebridgeintothelateralwallwhenthecatheterintowithtop,top,intothesideinplaceofgradedsandcollapsebackfillgroutingreinforcementafter,thatintheroadbedcompactiondegreeaftertopintoandstability.

Three,thebridge,onthebridge50kg/moflayingthewheel/rail,sleeperfornewⅢreplacementtypebridgepillow,thepillowtofillintheprimarywayballastless,bridgeroadwayonlineballastlessballastlessfeetsetLblockofviolations.

4,framebridgefourcornersapileofroadbedroadbedprotection,framebridgebladeAnglesetsupportandresistancetopilesidemovetransverselypile,resistanceonpiletopmovetransverselysetLreinforcedconcreteroofbeam,supportapiletopwork45brangecrownbeam,theprotectionofreinforcedconcretepiletopsetcrownbeam.

Line5,reinforcingsystem:the3-5-3claspcranerailbeamsandcarriedoutthemethodoflongitudinalbeamanddecoraterangeandroadbedprotectionpile,supportandchampionsleaguebeam,resistanceoflateralmovementofthepileandbeamlinereinforcementsystem(meetthetraingoslow45Km/hrequirements).

6,linethemovetransverselymeasures:frameroofprecastinthetailwhenevery3msetuptheTAB,butthechainandlinereinforcementsystemrelatesintogether,withthetopwiththetautpourintochain,bridgeoutsidetheuplifttautlinessetup;Tosetupthesideofsubgrademovepile.

7,injackingconstructioninframebridgeinbladeAnglefrontasteelbladeAngle,steelbladeAngleintoppositionindismantlingafter.

8,railwayroadbedonbothsidesofthevariouscable,fiberopticcableshouldbeintheframebridgeinjackingtakecorrespondingmeasuresbeforethetransition.

9,framebridgesettopsidesbilateralsteelbars,railingagainsttheballastlesssteelplateandadoublechambercabletrough,thelateralsetdefendnet,heightof2.2m.

10,framebridgethelateralwallapolyurethanewaterprooflayer,rooftopsetcoilwaterprooflayer,endfaceawaterprooflayerofsteelfiberreinforcedconcreteprotectivecover.Roofsteelfiberconcretecoverevery4msetadeep5mmwide10mmofbrokenseam,andpolyurethanewaterproofcoatingbrokenseamwillfillinreal,fill.

11,framebridgeinjackinginplaceinasmallblockonbothsidesofthebridgewaterwall,roofwaterprooflayerprotectionlayertobridgewaterslope,willfocusonwithwaterafterPVCpipeintothedrainagesystemunderthebridge,thebridgedeckdischargepipesinthepositioninthewall.

12,framebridgeinjackinginplace,framebridgeandroadbedcohesiononbothsidesinM10plasmasetPianShibuildbylayingbricksorstonestransitionsection.

13,framebridgeoneachsidewithin10m,byrailwayroadbedstandardbackfillandcompact,formationandtheoriginalofthesubgradesmoothcohesion,roadbedusingM10plasmabuildbylayingbricksorstonesPianShislopeonthebuildbylayingbricksorstones.

14,framebridgeonbothsidesofthesubgradediagonalsetwalkingcheckthesteps,widthis1.0m.

15,framebridgeentrancesareinferiortosetbullAnglesteelroof.

16,framebridgeinjackinginplace,asitdefendthenetonbothsidesoftherailwayrecovery.

4,designloadandcalculation

4.1designload

41.1railwaydesignliveload:-liveload,bycalculatingliveload:JQSstandardload;

Highwayload:highwaygradeI(onlyconsideritsadverseeffect).

4.1.2constantload:structuredeadweight,lineequipmentisheavy,andthestaticearthpressure,liveloadsoilpressure,concreteshrinkage,creep,andthetemperatureeffect.

4.1.3other:trainimpact,brakingforceandliveloadearthpressure.

4.2structurecalculation

2theframebridgetheinternalforceofBeijingjiaotonguniversityofhighwayoverpassrailway(frametypebridgestructure)finiteelementanalysissoftwarecalculation,andUSEStheMIDASstructureanalysissoftwareforreview.

BladeAngleoutaccordingtothetopintheprocessoftrainintobeartemporaryloadonthedesign.

TopforceconsiderbladeAngleofr3resistanceandvariouskindsofpositivefriction.

5,mainengineeringmaterials

1,concrete

Undertheframeofthesubject,wearrailwaybladeAnglebladeAngleandcantilever,uptogether,pavementcantilever,tailwallalltheC35concrete,anti-permeabilityindexisnotlessthantheP8,alkalicontentofconcreteshallconformtotheconcretealkalicontentrestrictions"(CECS53)requirements;CabletroughtheC25concrete;Workingpitboard,anchorbeam,guidethepierC25concrete;ThegatewayC25retainingwall,C30concrete;WaterprooflayerbylayerC40steelfiberreinforcedconcrete;Workingpitbackbeam,protectingpiles,resistancetomovetransverselypileandtopC25concretebeams.

2,reinforced

HPB235reinforced,[σ0]=130Mpa;

HRB335reinforced,chemicalcompositionC+Mn/6or0.5%[σ0]=180Mpathehighpressureinwatertreatment.

Reinforcedtechnologyconditionsshouldbeconsistentwithexistingnationalstandards"reinforcedconcreterollsteellightroundsteel"(GB13013)andthereinforcedconcreterollsteelribbedreinforcement"(GB1499)regulation.

3,waterprooflayer

Framebridgethelateralwallapolyurethanewaterprooflayer,rooftopsurfacecoilsetwaterprooflayer.

4,settlementjoints

Frameworkbetweensubjectandretainingwall3cmasettlementjoints,settlementjointsfillin3cmthickasphaltleachingofwood.

Inadditiontothespecialindicate,thedesignofthemateriallevelofperformanceparametersshouldaccordwiththerailwaybridgereinforcedconcreteandprestressedconcretestructuredesignspecificationoftherelevantregulations.

6.Engineeringandhydrogeologyconditions

6.1stratigraphiclithologyandphysicalandmechanicalpropertiesofsoillayer

Accordingtothesurveyrevealsdrilling.Constructionsiteexplorationdepthwithinthescopeofthestratigraphiclithologyisnewforthefourthalluvial(1),(2)powdersoilsiltyclay,(3),(4)powdersoilsiltyclay,(5)powdersoil,6powdersand,7,8)siltyclaypowdersoil,9)siltyclay.Accordingtothelithologyandengineeringproperties,lithologicalfeaturesfromuptodownofpointsasfollows:

(1)powdersoil(Q4al):athicklayerof4.9~5.6m,cinnamon,0.5mforplantingsurfacesoil,containplantroots,soildon"teven,localincludingopaqueclayinterlayer,cannotrubintostrips,handtwistsandarestronger,roughcut,includingrustyspot,damp,alittlesecret.Basicbearingcapacity120kPa.

(2)thesiltyclay(Q4al):cinnamon,thicklayerof1.6~2.4m,soildon"teven,localincludingpowdersoilinterlining,handtwistslightlysandfeeling,canhandrubintostrips,cutasmooth,includingrustyspot,plastic,Ⅱordinarysoillevel.Basicbearingcapacity120kPa.

(3)powdersoil(Q4al):cinnamon,thicklayerof0.8~2.1m,soildon"teven,localincludingopaqueclayinterlayer,cannotrubintostrips,handtwistsandarestronger,roughcut,includingrustyspot,damp,ZhongMi,Ⅱordinarysoillevel.Basicbearingcapacity120kPa.

(4)thesiltyclay(Q4al):cinnamon,thicklayerof1.6~2.4m,soildon"teven,localincludingpowdersoilinterlining,handtwistslightlysandfeeling,canhandrubintostrips,cutasmooth,includingrustyspot,thehardplastic,Ⅱordinarysoillevel.Basicbearingcapacity120kPa.

Framebridgeandretainingwallinopaquesubstrateofclaylayer,thebasiccapacity120kPa.

6.2hydrologicalgeologycharacteristics

Accordingtothesurvey,thesiteofthefourthisgroundwaterporewater,mainlyacceptprecipitationsupply,changerangeofgroundwaterbyprecipitation,undergroundwaterlevelislow,thewaterlevelelevation8.91~9.61m,thegroundsurfaceevaporationand(theinfluenceofflowislarger.Thefieldofconcretewithoutaggressivegroundwater.

7.Constructionscheme

7.1constructionplan

Therailwaybridgeintheframeworkofthestraightconstruction,workingpitintheBeijing-Kowloonrailwayeastside,fromtheeasttothewestinjacking.Topintoweight:2636.1t,thebiggestjackingforce:3934.7t,conductaprocess:39.4m.

Workingpitback40btherangeofreinforcedconcretepileandbackintheformofbeam,strengtheningthebuckleraillinethebeamandtherangeofthelongitudinalpickupmethod,top,andtoframebridgeintoshallbeQiaoOuonbothsidesandroadbedgroutingconsolidation,top,intothefourcornersofthebridgebeforetheframeworksetholeprotectionpiles,thefrontendofthebridgeintheframeworksetsupportandresistancetomovetransverselypilepile.

Retainingwallwith2mthickfoundationsandpebbles.Thebackboardframeworkfor1%ofthebowsetgradientslope.FramebridgeQiaoOuonbothsidesandroadbedingroutingreinforcementinjackingbeforeandafter.Frameworkinjackingbridgebefore,mustbebothseamlessroutetotakestressradiationmeasures.Frameworkontheboardprefabrication,concretestrengthtodesignstrength,andthenbegantotopinto.Injackingframeworkshallbecompletedpriortoallkindsofrailwayequipment,pipelines,etc,thereinforcementofthemovetowork.

Railwayroadbedonbothsidesoftheslopefeet15mplaceallhaveatouroftheopticalfiber,theframeworkinjackingbridgebeforethechangeandprotectivemeasures.

"For#11"and"for#12"netsleverinframebridgesphereofinfluence.Intheframebridgebeforemovingintothetoptodealwith.

Framebridgearecatenaryrodonbothsides,thelatestsignalbar#007modelofthestemfor11.6mdistance,theroadbedprotectionpileofprotection.

Framebridgeontheboardprefabrication,concretestrengthtodesignstrength,andthenbegantotopinto.

7.2themattersneedingattention

1beforeconstruction,tomaketheconstructionplan,reporttotherelevantdepartmentsoftherailwayadministrationobtainedapproval,andtherelevantdepartmentsandrailwayadministrationtoformalities,tomakeeffectivesafetymeasurestoensurerunningandpersonalsafety.

2constructiontopreventtherainyseason,andifitmustbeintherainyseasonconstruction,beforestartworking,mustwithrailwayadministrationrelevantdepartmentsdogoodprocedures,tostrengthenthesafetymeasuresbeforetheconstruction,preventthefoundationpitandroadbedcollapsed,andwellforfloodcontrol,itisstrictlyprohibitedtosoakintothefloodoffoundationpit.

3whenconstruction,toimproveroaddesigndepartmentoftheCentralLineshallprevail,aftercompletionofhighwayrailroadleaguetomeasure,completionshallbecorrectedforrailwayheightmap.

4beforeconstructionshouldbeallkindsofrailwayequipment,pipelineandcablehandledwell,besuretoensuresecurity.

5mainbodybenttopickupframeworkreinforcedlong,jointtouseflashbuttweldends,andshallbeverticalpolishingprocessing.

6thebeforeplacement,shouldcheckwhethertheembedmentpartsiscomplete.

7massconcretecasting,payattentiontoitsandworkingpitskateboardingeffectivelyseparated,floorsurfacetotrytosmooth,leveloff,andapplylubricant,preventfloorandskateboardssticktogether,top,intothestartupproblem.

8casetomeetthedesignstrengthconcrete100%,waterprooflayerandlayerbylayinggooddesign,andthetopcanbeconductedonlytryinjackingconstruction,top,intothesystemshouldbereservedinstrengtheningthegatewaytotheretainingwallcompletedemolition.

9forcontractandtopreventconcretecrack,chooseaggregateconcreterequirementwhenhavethelargestcompactiondegree,tostrictlycontrolthewaterconsumption,crosscarefully,besidesusingtheeffects,pectinandreinforcedinasecretplacemustputqiandaowithreality,andcarefullymaintenance,timelywatering,dismantlingformworklater.

Top10inthetop,mustcompletevariousprotectionfacilitiesconstruction,top,intothecontrolwhenthetopforceandthegooddirection,intheprocessoftopinto,withbothsidesofthesoilandthewholeframeworkweatheredrocksubgradegroutingreinforcement,ensureroadbedstability.

Andtakeappropriatemeasurestopreventlinemovetransversely.

12forthelinesofbothbeforebringingstress.

13afterthefoundationpitexcavation,promptlynotifythedesigninstituteforexaminationchamfer;Topintoprocess,suchasthediscoveryofgeologicalconditionsanddesignwithdiscrepancies,timelyanddesignunitrelation.

14thedrawing,orthisdescriptionisnotstatedareinaccordancewiththecurrentoftherailwaybridgeconstructionstandard"and"thehighwaybridgeconstructionstandard"oftherelevantregulations.

8.Overpassprojectofinfluencebyrailwayequipmenttearopenchange,protectionengineering

8.1tearopenchange,protectivemeasures

Railwayroadbedonbothsidesoftheslopefeet15mplaceallhaveatouroftheopticalfiber,theframeworkinjackingbridgebeforethechangeandprotectivemeasures.

"For#11"and"for#12"netsleverinframebridgesphereofinfluence.Intheframebridgebeforemovingintothetoptodealwith.

Framebridgearecatenaryrodonbothsides,thelatestsignalbar#007modelofthestemfor11.6mdistance,theroadbedprotectionpileofprotection.

Thelineprotectionforthenreferredtobeamdig-holepileconstructionoftheBeijing-Kowloonrailwaylineprotection.Accordingtothedesignrequirements,