JGJ 123-2000 既有建筑地基基础加固技术规范 英文版

中华人民共和国行业标准IndustrialStandardofthePeople’sRepublicofChinaJGJ123-2000既有建筑地基基础加固技术规范TechnicalCodeforImprovementofSoilandFoundationofExistingBuildingsBeijing,2000本英文版为内部资料，仅供参考，以中文版为准。TheChineseversionofstandardshasprecedencetotheirEnglishtranslationswhichareonlyforinternalreference.—1—中华人民共和国行业标准IndustrialStandardofthePeople’sRepublicofChina既有建筑地基基础加固技术规范TechnicalCodeforImprovementofSoilandFoundationofExistingBuildingsJGJ123-2000Mainlypreparedby:ResearchInstituteofConstructionScienceofthePeople’sRepublicofChinaApprovedby:MinistryofConstructionofthePeople’sRepublicofChinaImplementationdate:June1,2000—2—Noticeonissuingtheindustrialstandard“TechnicalCodeforImprovementofSoilandfoundationofExistingBuildings”JianBiao[2000]No.35Aspertherequirementin“NoticeonIssuingCompilationandRevisionProjectPlanforConstructionProjectIndustrialStandardsof1993”(JianBiao1993No.285),“TechnicalCodeforImprovementofSoilandFoundationofExistingBuildings”compiledbyResearchInstituteofConstructionScienceofPeople’sRepublicofChinaisherebyreviewedandapprovedascompulsoryindustrialstandard,numberasJGJ123-2000,andshouldcomeintoforcefromJune1,2000.ThesubjectstandardwillbemanagedandinterpretedbytheResearchInstituteofConstructionScienceofP.R.ChinawhichisthetechnicalresponsibleunitfortheMinistryofConstruction.TheResearchInstituteofStandardQuotasorganizedChinaConstructionPublishingHousetopublishthestandard.MinistryofConstructionofPeople’sRepublicofChinaFebruary12,2000—3—ForwardAspertherequirementofJianBiao1993No.285issuedbytheMinistryofConstruction,thecodecompilationteamherebycompiledthiscodethroughextensiveinvestigationandresearch,withmanyresearchresultshomeandabroadandalargeamountofconstructionpracticeexperiencessummarized,andthroughopinionsbroadlysolicited.Thetechnicalcontentsofthiscodemanyconsistofgeneralrules,symbols,basicstipulation,verificationofsoilandfoundation,foundationcalculation,improvementmethodsofsoilandfoundation,remedyandpreventionofsoilandfoundationincidentoraccident,improvementthroughaddedlayers,reinforcementtorectifyinclineorreplacement,andetc.ThecodeismanagedandinterpretedbytheResearchInstituteofConstructionScienceofP.R.ChinawhichisthetechnicalresponsibleunitfortheMinistryofConstruction.ThecodeismainlycompiledbytheResearchInstituteofConstructionScienceofP.R.China(Address:30EastThirdNorthRingRoad,Beijing;Postcode100013)ThecodeisjointlycompiledbyTongjiUniversity,NothernCommunicationUniversity,ResearchInstituteofConstructionScienceofFujianprovince.Thecodeismainlycompiledbyfollowingpersonnel:ZhangYongjun,YeShuqi,TangYeqing,andHouWeisheng.—4—TableofContent1GeneralRules....................................................................................................................52Symbols.............................................................................................................................53Basicstipulation................................................................................................................64VerificationofSoilandFoundation..................................................................................75FoundationCalculation.....................................................................................................96MethodsforImprovementofSoilandFoundation.........................................................117RemedyandPreventionofSoilandFoundationIncident..............................................278ModificationtoAddStories............................................................................................32—5—1GeneralRules1.0.1Inordertoexecutethetechnicalandeconomicalpolicyofthecountryduringthedesignandconstructionoftheimprovementofsoilandfoundation,thecodeiscompiledsothat“advancedtechnology,reasonableeconomy,safetyandadequacy,ensuredqualityandprotectedenvironment”canbeachieved.1.0.2Thiscodeisapplicabletodesignandconstructionofanyimprovementtosoilandfoundationcausedbyinadequatesoilinvestigation,design,construction,oroperations,byincreasedload,incline,displacement,reconstructionorprotectionofancientbuildings,orbynearbynewbuildings,excavationofdeepfoundationpits,newundergroundservices,ornaturaldisaster.1.0.3Thedesignandconstructionofimprovementofsoilandfoundationofexistingbuildings,besidesmeetingtherequirementsofthiscode,shouldmeettherequirementofrelevantnationalcompulsorystandardswhichisinforce.2SymbolsA–Bottomareaoffoundationd–Pilediameterd’–DiameteroflimepileafterexpansionEp–CompressionmodulusofpilebodyEs–CompressionmodulusofsoilbetweenpilesEsp–CompressionmodulusofcompoundsoillayerF–Designvalueoftheverticalforceonthetopsurfaceoffoundationfromupperstructureafterreinforcementoffoundationorloadincreased.f–Designvalueoffoundationbearingcapacityfs,k–Standardvalueofbearingcapacityofsoilbetweenpilesafterimprovementfp,k–Standardvalueofbearingcapacityofpileunitsectionfsp,k–StandardvalueofbearingcapacityofcompoundfoundationG–Designvalueoffoundationweightandweightofsoilontopoffoundationl1–Linedistanceofpilesl2–RowdistanceofpilesM–Designvalueofmomentappliedtothebottomoff