GB50202-2002英文版建筑地基基础工程施工质量验收规范教学文稿.doc

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1、Good is good, but better carries it.精益求精，善益求善。GB50202-2002英文版建筑地基基础工程施工质量验收规范-UDCNationalStandardofthePeoplesRepublicofChinaPGB50202-2002建筑地基基础工程施工质量验收规范CodeforAcceptanceofConstructionQualityofBuildingFoundationIssuedonApril12002ExecutedonMay12002JointlyPromulgatedbytheMinistryofConstructionandtheSt

2、ateGeneralAdministrationforQualitySupervisionandInspectionandQuarantineofthePeoplesRepublicofChinaNationalStandardofthePeoplesRepublicofChina建筑地基基础工程施工质量验收规范CodeforAcceptanceofConstructionQualityofBuildingFoundationGB50202-2002Compiledby:ConstructionandManagementCommissionofShanghaiMunicipalityAppro

3、vedby:MinistryofConstructionoftheP.R.C.Executedon:May12002ChinesePlanningPress2002BeijingNationalStandardofthePeoplesRepublicofChinaCodeforAcceptanceofConstructionQualityofBuildingFoundationGB50202-2002CompiledbyConstructionandManagementCommissionofShanghaiMunicipalityPublishedbyChinesePlanningPress

4、(Address:4/F,BlockC,GuohongMansionJia11,MuxudiBeili,XichengDistrict,Beijing)(Zipcode:100038Tel:6390641363906416)DistributedbyBeijingbranchofXinhuaBookstorePrintedbyWorldKnowledgePrintingHouse850x1168mm1/322.75printedsheets67thousandChinesecharactersFirstpublishedinApril2002SecondprintedinJune2002Num

5、ber150001-190000volumesUnifiedBookNo.:1580058482Price:RMB15.00NoticeonIssuingtheNationalStandardoftheCodeforAcceptanceofConstructionQualityofBuildingFoundationJ.B.2002NO.79PursuanttotheNoticeonthePrintingandDistributionofthePreparationandModificationPlansof1997sEngineeringConstructionStandards(J.B.1

6、997NO.108),thisCodeforAcceptanceofConstructionQualityofBuildingFoundationisrectifiedjointlybytheConstructionandManagementCommissionofShanghaiMunicipalityandotherrelevantdepartments.OurministryhasarrangedfortheexaminationbyrelateddepartmentsoftheCodeandherebyapproveditasanationalstandardwiththeserial

7、numberofGB5022-2002andtobeeffectiveonMay12002.The4.1.5,4.1.6,5.1.3,5.1.4,5.1.5,7.1.3and7.1.7articleshereofarecompulsoryandmustbestrictlyandexactlyperformed.UpontheexecutionofthisCode,anyrelatedcontentswithrespectofearthworksstipulatedinthepreviouslyformulatedSpecificationsforConstructionandAcceptanc

8、eofGroundandFoundationsGBJ202-83andSpecificationsforConstructionandAcceptanceofEarthworksandExplosionEngineeringGBJ201-83shallbeabolishedandterminatedimmediately.ThisCodeshallbegovernedbytheMinistryofConstructionoftheP.R.C.,andinterpretedbytheMinistrywithrespectofthecompulsoryarticleshereofandbyShan

9、ghaiFoundationEngineeringCompanywithrespectofthetechnicaldetailshereof,andpublishedanddistributedbyChinesePlanningPressundertheorganizationofthestandardquotainstituteoftheMinistryofConstructionoftheP.R.C.MinistryofConstructionoftheP.R.C.April12002Supportingcompilers:FoundationInstituteofChinaAcademy

10、ofBuildingResearchDesigninstituteofNO.3HarbouringBureauofCHECComprehensivesurveyresearchanddesigninstituteundertheMinistryofConstructionTongjiUniversityChiefdrafters:GuiYekunYeBorongWuChunlinLiYaogangLiYaoliangChenXiquanGaoHongxingGuoShutaiMiaoJunfaLiKangjunQiuShizhongQianJianmingLiuDelinTableofCont

11、ents1GeneralRules12Terms23BasicRegulations44Foundation54.1GeneralTerms54.2Soil-limeFoundation64.3Sand-sandstoneFoundation64.4GeosyntheticsFoundation74.5FlyashFoundation84.6DynamicConsolidationFoundation94.7GroutingFoundation94.8PreloadingFoundation114.9VibrationImpactFoundation124.10JetGroutingFound

12、ation124.11Soil-cementMixedPileFoundation134.12Soil-limeCompactedColumnCompositeFoundation144.13CementFlyashGravelPileCompositeFoundation154.14TampingSoil-cementPileCompositeFoundation164.15SandPileFoundation175PileFoundation195.1GeneralTerms195.2StaticForcePressing-inPiles215.3Pre-tensionedPre-stre

13、ssingTubePile225.4PrecastConcretePile235.5SteelPile255.6Cast-in-placeConcretePile276Earthwork296.1GeneralTerms296.2ExcavationofEarthwork296.3BackfillingofEarth317FoundationPit327.1GeneralTerms327.2Row-pileWallTimbering337.3Soil-cementPileWallTimbering347.4BoltingandSoil-nailedWallSupport357.5Steelor

14、ConcreteSupportSystem357.6UndergroundDiaphragmWall367.7SunkWellandCaisson387.8WaterLoweringandDrainage428QualityAcceptanceofDivisional(Sub-divisional)Work44ScheduleAKeyPointfortheSurveyofGroundandFoundation45ScheduleBPerformanceofPlasticDrainageBelts48ExplanationforUsageofWordsintheStandard49-1Gener

15、alRules1.0.1Forthepurposeofenhancingsupervisionandmanagementoverengineeringqualityandunifyingacceptancerulesonconstructionqualityofbuildingfoundationssoastoensureengineeringquality,thisCodeisherebymadeasfollows.1.0.2ThisCodeshallbeapplicabletothequalityacceptanceoffoundationsinbuildingworks1.0.3Requ

16、irementsstipulatedinanyoftheengineeringtechnicaldocumentsandcontractsthatareadoptedforfoundationconstructionshallatleastattainthestipulationssetforthhereof.1.0.4ThisCodeshallbeusedincooperationwiththeUnifiedStandardforQualityAcceptanceofBuildingEngineeringGB50300thatiscurrentlyinforceandeffective1.0

17、.5Acceptanceofthequalityofbuildingfoundationsshall,inadditiontothisCode,complywithotherrelatednationalcodesandstandardsthatarecurrentlyinforceandeffective.2Terms2.0.1GeosyntheticsfoundationAbuildingfoundationthatisformedbycoveringgeosyntheticswithsoil(orsands),wheregeosyntheticsmaybeoneormorethanone

18、layer.Generallyspeaking,thismethodissuitableforshallowfoundations.2.0.2HeavytampingfoundationUnderthiscircumstance,afreefallingheavytamperwillbeutilizedtotampsoil-coveringshallowfoundationstoformauniformlyhardenedsurfacelayertobeartheloadupon.Whenpunching,thetampersdropheightshallbemuchbiggerthanthe

19、foundationtobetamped.2.0.3DynamicconsolidationfoundationAsregardsthisterm,theprocessissimilartothatforheavytampingfoundations,exceptthatthetampersdropheightinthiscasemustbemuchbiggerthanthatforheavytampingfoundation.2.0.4GroutingfoundationInthiscase,thepreparedchemicalorcementgroutwillbeinfusedthrou

20、ghconduitsintotheholesofthesoilbody,andintegratedwiththebodysoastoincreasethebodysstrengthandreduceitscompressibilityandpermeability.2.0.5PreloadingfoundationImposealoadontheundisturbedsoiltoextrudethewatercontained,soastorealizethepre-consolidationofsoilandreducethebuildingfoundationslatesubsidence

21、andincreasethefoundationsbearingcapacity.Therearethreemethodsforthemakingofpreloadingfoundations,namely,heapedpreloading,vacuumpreloadingandprecipitationpreloading.2.0.6JetgroutingfoundationAsforthisfoundation,adrillerwillbeutilizedtodirectlybringagrouthosewithjetnozzleintothepredeterminedpositionun

22、derthesoillayer,orputthehoseatthepredeterminedpositionafterdrillingahole.Then,thegroutorwaterwillbedrivenbyhighpressuretosprayoutofthejetnozzle.Thewhirlyspayedgroutwillintegratewiththesoiltoformaconsolidatedbody.Theprocessofonlyutilizingasinglehosetospaygroutiscalled“one-pipemethod”,thatofutilizingt

23、wopipestospayhigh-pressureairandgroutcalled“two-pipemethod”,andthatofutilizingthreepipestospayhigh-pressurewater,high-pressureairandgroutsimultaneouslyiscalled“three-pipemethod”.2.0.7Soil-cementmixedpilefoundationUtilizethecementasthesolidifyingagentand,byablendingmachine,mixthecementwiththefoundati

24、onssoil,andthehardenedmixturewillformthisfoundation.2.0.8Soil-limecompactedcolumnDrillholesintheundisturbedsoil,fillinplainsoilorlimebylayers,tampthem,andmakethemcompacttomakethesurroundingsoilbodycompactsoastoasolidfoundation.2.0.9Cementfly-ashgravelpileAfterutilizingadrillerwithlongtwistbitstodril

25、lholesormakingholeswithasunkentubepilemachine,andfillbyapumporthroughacharginghopperthemixtureofcement,flyashandreducedstoneintoholestoformcompactandsolidfoundations.2.0.10PressedpilebyanchorrodThispilesinkingtechnologyutilizesananchorrodtopressthepileintothesoilgradually,wheretheanchorcanuseavertic

26、alsoilanchor,oragroundanchorthatistemporarilyanchoredinconcretesub-slaborpilecap.3BasicRegulations3.0.1Priortotheconstructionofbuildingfoundations,completegeologicalsurveydetailsandtheinformationofstructureaboutsurroundingpipelines,buildings,structuresandotherutilitiesmustbeprepared.Whennecessary,co

27、nstructionsurveysandexaminationshallbecarriedoutsoastoensurethefoundationsqualityandthesafetyofnearbybuildings.KeypointsabouttheconstructionsurveyrefertoScheduleA.3.0.2Constructionunitsmustownscorrespondingprofessionalqualificationsandshallestablishedimprovedqualitycontrolandinspectionsystems.3.0.3U

28、nitengagedintheinspectionofbuildingfoundationsandtestsforcertificationmustacquirethequalificationcertificatesissuedbytheprovincialandabove(includingtheprovincial,autonomousregion,municipalauthority)competentconstructionauthorityandcertificatesforqualifiedinspectionunitsissuedbycompetentinspectionaut

29、hority.3.0.4Asadivisionalwork,foundations,ifnecessary,maybefurtherdividedintoanumberofsub-divisionalworkpursuanttotheUnifiedStandardforQualityAcceptanceofBuildingsEngineeringGB50300currentlyinforce.3.0.5Intheeventthatabnormalconditionsoccurredinthecourseofconstruction,theconstructionshallimmediately

30、bestopped.Constructionsupervisionandmanagementcompaniesorownersshallinvitesurvey,designandconstructionunitstojointlyanalyzetheconditionssoastosolvetheproblemsexisted,eliminatehiddenqualityshortagesanddetailtheminwriting.4Foundation4.1GeneralTerms4.1.1Thefollowingmaterialsshallbepreparedfortheconstru

31、ctionofbuildingfoundations:1. Geotechnicalengineeringsurveymaterials.2. Type,allocationandstructurequalityofsurroundingbuildingsandundergroundfacilities.3. Engineeringdesigndrawings,designrequirementsandthestandardsrequiredtoattain,andmeansofinspection.4.1.2Thequality,testingitems,batchquantityandin

32、spectionmethodsofrawmaterials,suchassands,pebble,cement,steelmaterial,limeandflyash,shallcomplywithrelevantnationalstandardscurrentlyinforce.4.1.3Afterthefoundationsconstructioniscompleted,qualityacceptanceshouldbeproceededinaperiodofinactivity,whichisdeterminedbydesignrequirements.4.1.4Foundationim

33、provementworksshallgothroughatestingphasebeforethebeginningofformalconstructionsoastoverifypredeterminedconstructionparametersandimprovingeffects.Inloadtestsforverifyingtheeffectsofimprovement,theimposedloadshallnotbesmallerthantwotimesofthatofthedesignvalue.4.1.5Asregardsthelime-soilfoundation,sand

34、andsandstonefoundation,geosyntheticsfoundation,flyashfoundation,dynamicconsolidationfoundation,groutingfoundation,andpreloadingfoundation,theconstructionresults(foundationstrengthorbearingcapacity)mustattainthelevelindesignrequirements.Intermsofthenumberofinspection,atleastthreepointsarerequiredfore

35、veryunitproject.Atthesametime,atleastonepointshallbeinspectedevery100m2foraprojectwiththeareaof1000m2orabove,andevery300m2foraprojectwiththeareaof3000m2orabove.Atleastonepointisnecessaryundereveryindependentfoundation,andonepointisneededevery20linearmeteralongthefoundationtrench.4.1.6Asregardsthesoi

36、l-cementmixedpilefoundation,jetgroutingfoundation,sandpilefoundation,vibration-punchingpilecompositefoundation,soil-limecompactedcolumncompositefoundation,cementflyashgravelpilefoundationandsoil-cementtampingpilecompositefoundation,thenumberofinspectionofbearingcapacityshallbe0.5%-1%ofthetotalbutnot

37、lessthanthreeplaces.Iftheinspectionofsinglepilestrengthisrequired,theinspectionnumbershallbe0.5%-1%ofthetotalbutnotunderthreepiles.4.1.7Withtheexceptionofthemaincontrolitemssetforthinthearticlesof4.1.5and4.1.6ofthisCode,othermaincontrolandcommonitemsmaybeinspectedrandomly.However,amongthecompositefo

38、undations,soil-cementmixedpile,jetgroutingpile,vibration-punchingpile,soil-limecompactedcolumn,cementflyashandtampingsoil-cementpileshallberandomlyinspectedbasedonapercentageof20%.4.2Soil-limeFoundation4.2.1Soil,limeorcement(whenthelimeelementisreplacedwithcement)andtheirmixingratioshallbeinlinewith

39、designrequirements.Soil-limeshallbeuniformlymixed.4.2.2Inthecourseofconstruction,thethicknessofvariouslayers,overlaplengthoftheupperandlowerlayersofsections,waterquantityfortamping,numberoftampingandcompactingcoefficientshallbeexaminedandmeasured.4.2.3Afterthecompletionofconstruction,thesoil-limefou

40、ndationsbearingcapacityshallbeinspected.4.2.4TheQualityinspectionstandardforsoil-limefoundationsshallcomplywithTable4.2.4.Table4.2.4Qualityinspectionstandardforsoil-limefoundationsNameNo.InspectioncontentsPermissiblevariationorvalueInspectionmethodUnitValueMaincontrolitems1Bearingcapacityoffoundatio

41、nDesignrequirementsBystipulatedmethod2MixingratioDesignrequirementsBasedonthevolumeratioatmixing3CompactingcoefficientDesignrequirementsMeasureonthespotCommonitems1Particlesizeoflimemm5Sieving2Contentoforganicsubstanceinsoil%5Laboratorialroasting3Particlesizeofsoilmm15Sieving4Watercontent(comparedwi

42、ththerequiredoptimizedpercentage)%2Drying5Thicknessvariationoflayer(comparedwithdesignrequirements)mm50Waterlevel4.3Sand-sandstoneFoundation4.3.1Rawmaterialsincludingsandandsandstoneshallmeetthedesignrequirementsforqualityandmixingratio,andshallbeuniformlymixed.4.3.2Duringthecourseofconstruction,the

43、thicknessoflayersandtheoverlaplengthinsections,waterquantityfortamping,numberoftampingandcompactingcoefficientmustbeexaminedandmeasured.4.3.3Afterthecompletionofconstruction,thesand-sandstonefoundationsbearingcapacityshallbemeasured.4.3.4TheQualityinspectionstandardforsand-sandstonefoundationsshallc

44、omplywithTable4.3.4.Table4.3.4Qualityinspectionstandardforsand-sandstonefoundationsNameNo.InspectioncontentsPermissiblevariationorvalueInspectionmethodUnitValueMaincontrolitems1BearingcapacityoffoundationDesignrequirementsBystipulatedmethod2MixingratioDesignrequirementsBasedonthevolumeorweightratioa

45、tmixing3CompactingcoefficientDesignrequirementsMeasureonthespotCommonitems1Contentoforganicsubstanceinsand-sandstonematerial%5Roasting2Contentofsoilinsand-sandstonematerial%5Waterwash3Particlesizeofsandstonemm100Sieving4Watercontent(comparedwiththerequiredoptimizedpercentage)%2Drying5Thicknessvariat

46、ionoflayer(comparedwithdesignrequirements)mm50Waterlevel4.4GeosyntheticsFoundation4.4.1Beforetheconstruction,thephysicalproperty(includingthequality,thicknessandspecificgravityofunitarea),strength,ratioofelongationofgeosyntheticsmustbeinspectedandmeasured,sodothesoilandsand-sandstone.Geosyntheticssh

47、allbeinspectedonabatchbasis,with5%foreverybatch.4.4.2Inthecourseofconstruction,stripping,layingthicknessandflatnessofbackfill,layingdirectionofgeosynthetics,overlaplengthorconditionofjoints,connectionbetweenthestructureandgeosynthetics,etc.mustbechecked.4.4.3Afterthecompletionofconstruction,thegeosyntheticsfoundationsbearingcapacityshallbemeasured.4.3.4TheQualityinspectionstandardforgeosyntheticsfoundationsshallcomplywithTable4.4.4.Table4.4.4QualityinspectionstandardforgeosyntheticsfoundationsNameNo.