英文版深基坑土方开挖工程施工设计方案WPforEarthworkExcavationofMainPowerBuilding

范文范例精心整理 B IssueforApproval A IssueforApproval REV. DESCRIPTION DATE DESIGNEDBY CHECKEDBY REVIEWEDBY APPROVEDBY OWNER VIETNAMELECTRICITYTHERMALPOWERPROJECTMANAGEMENTBOARD3 CONSULTANT POWERENGINEERINGCONSULTINGJOINTSTOCKCOMPANY3 CONTRACTOR THECONSORTIUMOFCHENGDA-DEC-SWEPDI-ZEPC SUBCONTRACTOR ZHEJIANGTHERMALPOWERCONSTRUCTIONCOMPANY PROJECT: DUYENHAI3THERMALPOWERPLANTPROJECT CONTRACTNO:DH3-05082011 DOCUMENTNAME:WorkingPlanforMainHouseExcavation PROJECTCONTROLNO.: DH3-31U-C-WP-0002 REV:BContents11ProjectOverview12ReferenceStandardsandCodes13ConstructionPreparation13.1TechniquePreparation13.2LaborPowerPreparation23.3MachineryPreparation23.4MaterialPreparation23.5WorkingSurroundingsPreparation23.6WorkingSchedule34MainMethod&TechniqueMeasures34.1ConstructionSequence&Methods34.2Slope44.3Steelpile64.4DrainageofFoundationPit64.5FoundationPitMonitoring65QualityAssuranceMeasures65.1OrganizationchartofQA/QC75.2Flowchartofqualityproblemstreatment85.3Specificmeasures86SupplementofGuaranteeMeasurestotheSchedule86.1EstablishaStrictCensorshipforConstructionSchedule86.2WarrantytheSupplyofMaterials&OutwardProcessingComponents96.3TheCoordinationWorkBetweenCivilEngineering&EquipmentsInstallation97Safety&CivilizedConstruction118AttachmentDrawing118.1Drawingofexcavationfor#1mainhouse128.2LayoutofDrainagemeasuresfor#1mainhousefoundationpit138.3SteelSheetpilessurveypointslayoutfor#1mainhouse148.4SurveyRecordforFoundationPit158.5CalculationforsteelpilewallWorkingPlanforMainHouseExcavation1ProjectOverviewProjectName：DuyenHai32x622MWThermalPowerPlant;TheOwner:PowerGenerationCorporation1TheConsultant:PowerEngineeringConsultingJointStockCompany3DesignOverview:TheprojectofVienamDuyenHai3PowerPlantislocatedinDuyenHai,TraVinhProvince.Whichthefoundationislocatedonmudlayerorseasandlayer.Rawgeographicalelevationis-2.37m,andundergroundwaterlevelis-3.8m.Mainhouseof#1unitincludesTurbinehouseandbunkerbay,axisA～Dis52.6m,axis0～9is91m.Theexcavationcushionbottomelevationforfoundationofmainhouseare-4.1m、-5.1m、-6.1m、-8.4m,theexcavationcushionbottomelevationforturbinehousefoundationis9.4m,thebunkerbaycushionbottomelevationis--6.1m.Asforelevationofsomefoundationisbelowundergroundwaterlevel,andexcavationisdeep,itisrequiredtostressondewateringfordeepfoundationpitandslopreinforcementtoensurethesafetyconstruction.2ReferenceStandardsandCodesUnifiedStandardforConstructionalQualityAcceptanceofBuildingEngineering（GB50300-2001）CodeforAcceptanceofConstructionalQualityofBuildingFoundation(GB50202—2002)CodeforEngineeringSurveying（GB50026-2007）3ConstructionPreparation3.1TechniquePreparationPrepare,reviewandapprovemethodstatementinaccordancewithprocedures.PrepareITPinaccordancewithacceptancestandard.Prepareconstructionstartreport,reviewedandapprovedbyrelateddepartments.Organizerelatedpersonnelfordrawingjointreviewandtechniqueenclosure,makingrecordandarchive.Beforestartwork,performtechniqueandsafetyenclosureforconstructors.Completesitehorizontalcontrolnetworkandlevelingpointmonitoringworkaccordingtothesurveyingcontrolpointsuppliedbyconstructionunit.3.2LaborPowerPreparationLaborrequiredbythisprojectisasfollowingtable: S.N. Typeofwork Quantity S.N. Typeofwork Quantity 1 Sitemanagementstaff 2 7 Excavatordriver 4 2 HSEPersonnel 1 8 Pilingmachinedriver 2 3 QCInspector 1 9 Otherstaff 15 4 Electrician 2 5 Surveyor 4 6 Truckdriver 16 3.3MachineryPreparationMachineryandequipmentsbythisprojectisasfollowingtable: S.N. Name Type Quantity(unit) Remarks 1 Loader 1 2 Hydraulicexcavator 2 3 Submersiblepump 2.2kw 17 4 Dumptruck 8 5 Level ATO32 1 6 TotalStation NTS312R+ 1 7 PilingMachine Type450 1 Forsteelsheetpilingwork3.4MaterialPreparationPlasticfilm：4000m2；Sandbag：600m；Scaffoldings：7t；Fastening：1000pieces；Waterpipes：700m；12msteelsheetpiles：160pieces.Allabovematerialshallbetracedinthewholeconstructionprocess,andaddediffoundnotenough.3.5WorkingSurroundingsPreparationWater:leadfromPhase3steelfactorywaterpipes;Electricity:leadfromIIcabinetlocatedinthesouthwestofphase3#1boilerRoad:aconcreteroadusedfortransportationlocatesinthesouthwestoftheworkingsite;Temporaryroadsarebuiltbyactualdemandsbetweentheworkingsitewiththeconcreteroad.3.6WorkingSchedule4MainMethod&TechniqueMeasures4.1ConstructionSequence&MethodsThesequences&methodsforvariousworkingpartsareasfollowingtable: S.N. WorkingPart Contents&Sequence 1 Bunkerbayexcavation Excavatedtothedepthof-6.1m,adoptslopeexcavation→usingplasticfilmtocoverslopesurface→aftertheexcavationiscompleted,drainageditch&pitaresetatthebottomofthefoundationforpumpingwater. 2 TurbinefoundationaxisA～B Excavatedtothedepthof-4.1m，adoptslopeexcavation→usingplasticfilmtocoverslopesurface→aftertheexcavationiscompleted,drainageditch&pitaresetatthebottomofthefoundationforpumpingwater. 3 ExcavationforTurbinefoundation Browofsteelsheetpilesconstruction→Thefoundationofdepthto-9.4m，Therestadoptsslopeexcavation,verticalexcavationforBrow→usingplasticfilmtocoverslopesurface→aftertheexcavationiscompleted,drainageditch&pitaresetatthebottomofthefoundationforpumpingwater.See8.1fordrawingofthefoundationexcavation4.2SlopeTheslopeofthisprojectisas1：1.5accordingtotheCodeforAcceptanceofConstructionalQualityofBuildingFoundation(GB50202—2002);thedistancebetweentheboundaryofearthworkexcavationwithfoundationboundaryis:b=0.6+0.3+0.3+1.5h,whichhisexcavationdepth.Seefollowingsketchfordetails:Sincethesoilofthesitehasagoodstabilityitself,reinforcementmeasuresneednottobetakenfortheslopeduringexcavation.Theslopecoveredwithcolorbandclothpreventingfromrain.Asfollowingpic.shows:4.3SteelpileToassureconstructionprogress,thefoundationbythesideofBshouldbesupportedwithsteelsheetpiles。Accordingtothedataofexploration&themanufacturer’s,thetype&layoutoftheteelsheetpilesareasfollows:Type:12minlength（Seeattachment8.5forcalculation）,0.4inwidth,76.1kg/m,asfollowingpicture:Sitelayoutofthesteelsheetofpilesisaspicture8.1；Installguidepositioningbracket:itisinstalledforensuringtheverticalityandlevelofpiles.Theenclosingpurlinsareweldedby2piecesof20#U-steelsintwo-way,andtheheightforInstallingguidepositioningbracketis2.5m,twotheodolitesaresetforcontrollingtheverticality.Whentheinstallationiscompleted,thebeamsofguidepositioningbracketcannotbesunkanddeformedandshallkeepverticalintheprocessofsteelsheetpiling.Steelsheetpiling:thesteelsheetpilesshallbeinspectedbeforepiling,verticalfaceshallbeflatandalignment,andlockcatchshallmeetrequirements,andbefixedifnot.Meanwhileclosegroovebottomintipofpileswithgreasepaintedontoittoavoidmudintothelockcatch.Crawlercraneisusedforpiling,thesteelsheetpileswillbeliftedtotheinsertingpointbycranes,thelockcatchshallbeinalignmentwhenpitchingofpiles,pilecapandhardwoodmatwillbecoveredontopandpilednormally.Inordertoensuretheverticalityofpiles,thepilingshallbeperformedalongwiththeenclosingpurlinsbyusingtwotheodolitesforcontrolling.Whenstartpiling,thelocationanddirectionofthefirstandsecondpiecesofpileshallbeaccurateforthefunctionofguiding,theyshallbemeasuredforeverymeterintotheearth.Whenitreachestheheightofbracket,itshallbefixedbyweldingofsteelplatewithguidepositioningbracket.Afterthat,markthepositionofeachsteelpileonsteelenclosingpurlingsinconvenientofcorrectionatanytime.Ifthepileisinclinedinpiling,steelropewillbeusedforpullingthepiles,pulling,pilingandcorrectionbysteps.Whenthefirstrowpilingfinished,andbepiledtothedesigneddepthbysecondtime.4.4DrainageofFoundationPitWatercollectionanddrainagebyditchesaretakenforfoundationpitdrainage,seefoundationpitdrainagedrawingforthedrainagefacilities.Bagscoveredwithplasticfilmonthetopofslopeareusedforstopwatertopreventoutsidewaterfromflowingintothepit.Thebagsshallbestackedcloselywiththegapfilledbyclayeysoil.Widthof300mmditcharesetatthepositionof600mmhigherthepitbottom,thedepthofditchatslopestartingpointis300mmandthegradientisin0.1%.600mm×600mmwatercollectionpitsaresetalongwiththeditch,thedistancebetweentwopitsisnomorethan30m.Thedepthofwatercollectionpitis500mmdeeperthantheditch.Andthewaterinthepitwillbepumpedoutside.Seeattachment8.2forwaterstop,ditchandwatercollectionpitarrangement.4.5FoundationPitMonitoringInordertoensuretheconstructionsafety,displacementandsettlementforsteelsheetpileshallbemonitoredintheperiodoffoundationexcavationandusing.Thelayoutofmonitoringpoints:onemonitoringpointissetonthemiddlesteelsheetpile,whichbothsidesof12mand24mawayarealsosetmonitoringpoints,thetotalquantityIs5,seeattachment8.3formonitoringpointslayout.Methodofmonitoringpoints:whentheconstructionofsteelsheetpilingiscompleted,onesmallholeonthetopofpiledrilledbynailisconsideredasthemonitoringpointfordisplacementandsettlement.Monitoring:Theinitialvalueshallbemeasuredinthe12hafterthecompletionoffoundationpitexcavation;Andinthe3daysaftertheinitialvaluemeasured,itshallbemeasuredonceineachday;andafterthatonceoneweek.Seeattachment8.4forTableofmonitoringrecord.5QualityAssuranceMeasures5.1OrganizationchartofQA/QC5.2FlowchartofqualityproblemstreatmentIfanyqualityproblemisfound,itisrequiredtobetreatedasfollowing5.3Specificmeasures5.3.1SurveyingandLayoutTotalstationandlevelusedforsurveyingshallbecalibratedwithcalibrationcertificate.Sidelineshallbere-surveyedintheprocessofexcavationtoassuretheaccurateexcavationposition.5.3.2Earthwork100mmaboveelevationoffoundationpitbasementshallbeexcavatedbymanpowertoavoiddisturbingthebasementsoilandloweringitsloadcapacity.Under-excavationandover-excavationarenotallowed.Ifover-excavationhappens,itshallbebackfilledwiththematerialpermittedbytheOwner/Consultant,andthecompactionfactorshallmeetthedesignrequirements.《ITPforEarthWork》shallbeimplemented.6SupplementofGuaranteeMeasurestotheSchedule6.1EstablishaStrictCensorshipforConstructionScheduleTheconstructionprogressandthetimeforeachkindofworkersjoiningintotheworkshallbecontrolledinaccordancewiththenetworkplan,themanagementshallarrangeconstructionsequencesinaccordancewithaggregatescheduling.Checkeverydayconstructionprogressandfinisheverydayworkinschedule,ensuretoday’sworkwillnotaffecttomorrow,thisprocesswillnotinfluencenext.Thesitemanagerwilltakecommandbyhimselfforkeypartwhichaffectschedule.6.2WarrantytheSupplyofMaterials&OutwardProcessingComponentsOrganizepersonnelmakingsubprojectanditemprojectanalysissheet,andprocessing,procurementandsupplyingplanformaterial,productionandsemi-production.Ensurethemachineryallocationworkandmaterialprocurementandsupplying.Determinetimeformaterialenter-siteaccordingtotheDrawingofConstructionSchedulingNetworkPlan.6.3TheCoordinationWorkBetweenCivilEngineering&EquipmentsInstallationThecivilengineering&equipmentsinstallationworkingteamneedtocooperateinconstruction,andprotecteachother’sproductionandsemi-production.Acoordinationmeetingisrequiredtoholdbyprojectmanageronceaweektosolvetheproblemsforcooperationamongvariousofworks.Constructiongroupswithmanyyearsofconstructionexperienceareselectedforthisproject.Andcompletethemanagementorganization.Arrangelaborpowerandmaterialsupplyingreasonablyandimproveconstructionefficiencyaccordingtotheconstructionschedulenetworkplan.Distinguishprimaryandsecondarypartsaccordingtothethecharacteristicsofthisproject,interchangetheworkinaccordancewithconstructionsequencesandtechnologytoassuretheprojectisdoneonschedule.7Safety&CivilizedConstructionThepersonnelshallwearsafetyhelmetwhenenterintothesite.Alltheconstructorshallwearrequiredsafetyshoeswhenenterintothesite.Powerdistributionbyclassesandthree-phasefivelittlesystemforpowerdistributinglinearetakeninsite.Forbidtostaywirewithoutpermission.Onebreakforoneelectricequipment,oneleakagecircuitbreakerforonedistributionbox,usestandarddistributionboxtoensureelectricalSafety.Allspecialworkersshallholdcertificate.Wheninconcretepouring,goodinsulationsoftrubbercablesareusedfortheelectricwires,theswitchesandplugshallbeincompleteandgoodinsulation.Forbidtoinserttheelectricitywiresintothesocketdirectly.Thevibratoroperatorsshallwearrubbershoesandrubbergloves.Alltheconstructorsareforbiddentodrinkwinebeforeconstruction.Nosmokinginsite.Stopoutdoorconstructionwhencatchesstrongwind,thunderstormandothersevereweather.Noself-madeladderisallowedtouse,ifrequired,itshallbeacceptedandapprovedbysafetyengineer.Keepconstructionsiteclean,removerubbishandwastetimely,followtheprincipleof“workfinished,materialusedupandcleansite”.Setbarriersaroundconstructionarea,warningbarriershall≥1.5awayfromthesideoffoundationpit,andsetobvioussafetywarningsignsandplacardasfollowingpicture:8AttachmentDrawing8.1Drawingofexcavationfor#1mainhouse8.2LayoutofDrainagemeasuresfor#1mainhousefoundationpit8.3SteelSheetpilessurveypointslayoutfor#1mainhouse8.4SurveyRecordforFoundationPit Owner：Consultant： SurveyRecordforFoundationPit Contractor ProjectName：SubdivisionalWork：BidNo.： ProjectName SubdivisionalWork Location Date InstrumentwithNo. Surveyedby Point Coordinate Elevation Displacement Settlement DisplacementSpeed SettlementSpeed X Y Sub-contractorZTPC EPCContractorCDSZ ConsultantPECC3 OwnerTPMB3 Position Signature FullName 8.5CalculationforsteelpilewallProjectManagerProjectChiefEngineerDeputyProjectDirectorProjectQualityinchargeSpecializedpersonforqualityinspectionofprojecttechnicalpersoninchargeSpecializedpersonforqualityinspectionTeamtechnicianSurveyingteamMaterialmanagementteamMachinerydispatchingteamUnskilledworkersfindqualityproblemsorqualityaccidentconfirmtheprotectivemeasuresinvestigatethesaidaboveAnalyzecauseunclearimplementtheprotectivemeasuresclearInvestigatemore,andanalyzethecausefurthernoneedtotreattreatornotneedtotreatconfirmtreatmentplandesignorconstructioninspectionandacceptanceconclusionsubmitthetreatmentplanword完美格式_1462887578.xlsSheet1 TínhtoántườngcừkhônggiacốhệneoCalculationforthesheetpilewall(withoutanchorstructure) Điềukiệnđểchântườngcừtạimặtđấttrướctườngkhôngbịdịchchuyểnthìmomenttạiđóbằng0. Áplựcchủđộngcủaphầnđấtsautườngtừcaođộmặtđấttrướctườngtrởlên: Theconditionforthebottomofthesheetpilewall(atthegroundinfrontofthewall)nottobemovedisthatthevalueofmomentatthatpositioniszero(0).Theactivepressureofsoilbehindthesheetpilewallwhichisfromtheelevationatthegroundinfrontofthesheetpilewallisasfollows: Wc=0.5*gbh*(H1)2*K0(T/m) VớiK0làhệsốáplựchôngcủacát,K0=0.43÷0.54,chọnK0=0.54 K0isthepressurecoefficentofsand,K0=0.43÷0.54,chooseK0=0.54 gbhlàdungtrọngbãohòacủacáttrongtrườnghợpcómưa,gbh=1.9T/m3 gbhisthemaximumvolumetricweightofsandwhenthereisrain,gbh=1.9T/m3 H1=4.0m ÞWc=0.5*1.9*(4)2*0.54=8.208(T/m) Áplựcchủđộng(đãtrừáplựcbịđộng)củaphầnđấtsautườngtừcaođộmặtđấttrướctườngtrởxuống: Theactivepressureofsoilbehindthesheetpilewall(afterdeductionofinactivepressure),whichisfromtheelevationofgroundinfrontofthesheetpilewalltothebelow,isasfollows: W'c=gbh*H1*H2*K0(T/m) ÞW'c=1.9*4*H2*0.54=4.104*H2(T/m) Áplựchoạttảiq=1T/m2quyđổithànhtảitrọngngangsautường: Liveloadpressure,q=1T/m2convetertedintocrossingload: Pc=0.73*H1(T/m) ÞPc=0.73*4=2.92(T/m) Momnettạichântườngbằng0,tức: Momentatthesheetpilewall'sbottomiszero(0),itmeansthat: Wc*H1*2/3+Pc*H1/2=W'c*H2/2 Û8.208*4*2/3+2.92*4/2=4.104*(H2)2/2 ÞH2=3.68(m) Vậy,vớicừlarsendài12.0mthìH2=7.5mlàđạtyêucầu Therefore,thesteelsheetpilewithitslengthof12.0mandH2=7.5mmeettherequirement. Khiđó,vịtrícómomentcựcđạinằmthấpcaođộmặtđấttrướckèmộtkhoảnglàx(m). Where,themaxmomentisatthepositionofx(m)whichisbelowthegroundelevation. Cânbằngmomenttạiđó,tađược: Makingthemomentbalanced,wehave: Wc*(H1/3+x)+Pc*(H1/2+x)=W'c*(H2/2-x) Û8.208*(4/3+x)+2.92*(4/2+x)=4.104*7.5*(7.5/2-x) Þx=2.354(m) Momentuốncựcđại/Maxbendingmoment: Mmax=W'c*(H2/2-x)=4.104*7.5*(7.5/2-2.354) ÞMmax=42.97(Tm) Momentkhánguốnchophépcủa1mtớitườngcừlarsenIV: Bendingmomentresistanceallowedfor1mofsheetpilewall(sheetpiletypeIV): [Mu]=2270cm3*3000Kg/cm2=6810000(Kgcm)=68.1(Tm) ÞMmax=42.97(Tm)<[Mu]=68.1(Tm) ÞĐạtyêucầu/Meettherequirement Dovậy,việclắpthanhgiằngthépvàhệneolànhằmtăngcườngkhảnăngchịulựcvàtínhđồngbộcủa tườngcừ. Theinstallationofbracingsteelandanchorstructureisforequallystrengtheningoftheloadingcapacity.MBD0022AC9B.unknown_1462886946.xlsSheet1 ÞH2=3.68(m) Vậy,vớicừlarsendài12.0mthìH2=7.5mlàđạtyêucầu Therefore,thesteelsheetpilewithitslengthof12.0mandH2=7.5mmeettherequirement. Khiđó,vịtrícómomentcựcđạinằmthấpcaođộmặtđấttrướckèmộtkhoảnglàx(m). Where,themaxmomentisatthepositionofx(m)whichisbelowthegroundelevation. Cânbằngmomenttạiđó,tađược: Makingthemomentbalanced,wehave: Wc*(H1/3+x)+Pc*(H1/2+x)=W'c*(H2/2-x) Û8.208*(4/3+x)+2.92*(4/2+x)=4.104*7.5*(7.5/2-x) Þx=2.354(m) Momentuốncựcđại/Maxbendingmoment: Mmax=W'c*(H2/2-x)=4.104*7.5*(7.5/2-2.354) ÞMmax=42.97(Tm) Momentkhánguốnchophépcủa1mtớitườngcừlarsenIV: Bendingmomentresistanceallowedfor1mofsheetpilewall(sheetpiletypeIV): [Mu]=2270cm3*3000Kg/cm2=6810000(Kgcm)=68.1(Tm) ÞMmax=42.97(Tm)<[Mu]=68.1(Tm) ÞĐạtyêucầu/Meettherequirement Dovậy,việclắpthanhgiằngthépvàhệneolànhằmtăngcườngkhảnăngchịulựcvàtínhđồngbộcủatườngcừ. Theinstallationofbracingsteelandanchorstructureisforequallystrengtheningoftheloadingcapacity.