建筑施工门式钢管脚手架安全技术规范》.docx
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建筑施工门式钢管脚手架安全技术规范》
IndustrialStandardofPeople’sRepublicofChina
建筑施工门式钢管脚手架安全技术规范
SafetyandTechnicalCodeforFrame-Type
Steel-TubeScaffoldsinConstruction
JGJ128—2000
J43—2000
Beijing2000
IndustrialStandardofthePeople’sRepublicofChina
建筑施工门式钢管脚手架安全技术规范
SafetyandTechnicalCodeforFrame-Type
Steel-TubeScaffoldsinConstruction
JGJ128—2000
Mainlypreparedby:
HarbinIndustrialUniversity
Approvedby:
TheMinistryofConstructionofthePeople’sRepublicofChina
Implementedfrom:
Dec.1,2000
ChinaBuildingIndustryPublishingHouse
Beijing2000
Noticeforissuanceofindustrialstandard“SafetyandTechnicalCodeforFrame-TypeSteel-TubeScaffoldsinConstruction”
JianBiao[2000]No.223
Asrequiredby“Noticeforissuanceoftheplansforformulationandrevisionofstandardsandcodesofprojectconstructionin1989”releasedbytheMinistryofConstruction（[89]JianBiaoJiZiNo.8）,“SafetyandTechnicalCodeforFrame-TypeSteel-TubeScaffoldsinConstruction”preparedbytheformerHarbinArchitecturalUniversityhasbeenreviewedandapprovedtobeindustrialstandard,inwhicharticles3.0.4,6.2.2,6.2.4.1,6.5.4,6.8.1,7.3.1.4,7.3.1.5,7.3.2.1,7.3.3.1,7.5.4.4,7.5.4.5,7.5.4.6,8.0.1,8.0.2,8.0.3,8.0.5,8.0.7,8.0.10and9.4.3.6arecompulsory.ThisstandardisnumberedasJGJ128—2000,andwillbeputintopracticefromDec.1,2000.
ThisstandardwillbeundermanagementofBeijingZhongJianArchitectureScientificTechnologyResearchInstitute（subsidiarytotheMinistryofBuildingandresponsibleformanagementofsafetystandardandtechnologyinarchitectureengineering）,andwillbeexplainedindetailbythecurrentHarbinIndustrialUniversity.ItispublishedbyChinaArchitecturalIndustryPublishingHouseundertheorganizationofStandardRatingResearchInstitute,subsidiarytotheMinistryofBuilding.
TheMinistryofConstructionofthePeople’sRepublicofChina
Oct.11,2000
Preface
Uponrequirementby[89]JianBiaoJiZiNo.8documentissuedbytheMinistryofBuilding,thegroupinchargeofcompilationofstandardshasformulatedthiscodeafteranextensiveinvestigation,serioussummaryofpracticalexperiences,consultationoftherelevantinternationalstandardsandadvancedforeignstandards,andextensivecollectionofcommentsandproposals.
Thiscodeismainlyconsistedof:
1GeneralRules;2TerminologiesandSymbols;3MaterialPropertyofElementsandFittings;4Load;5DesignCalculations;6ConfigurationRequirements;7ErectionandRemoval;8SafetyManagementandMaintenance;9TemplateSupportandFullScaffold.
ThisstandardwillbeundermanagementofBeijingZhongJianArchitectureScientificTechnologyResearchInstitute（subsidiarytotheMinistryofBuildingandresponsibleformanagementofsafetystandardandtechnologyinarchitectureengineering）.Theunitmainlyinchargeofcompilationisauthorizedforexplanationindetail.
Mainlypreparedby:
HarbinIndustrialUniversity
Participants:
ShanghaiArchitectureConstructionTechnologyResearchInstitute
ShanTouInternationalScaffoldCompany
BeijingLiJianTemplateCompany
WuxiFareastArchitecturalEquipmentCompany
Mainlydraftedby:
XuChongbaoPanDingLaLuZhangTiezheng
ZhangLiangjiGuHongjongZhengQiupingZhangAiru
GaoWeichengJinYiNingRenzhiYangWeidong
TableofContents
1GeneralRules
1.1.1Thiscodeispreparedforimplementationofnationallawsandregulationsrelatedtosafeproductionduringdesignandconstructionofframe-typesteel-tubescaffoldssoastoensurethemtobetechnologicallyadvanced,economicallyreasonable,andsafeinuse.
1.1.2Thiscodeisapplicablefordesign,constructionanduseoffloor（bottombracing）frame-typesteel-tubescaffoldsusedinconstructionofindustrialandcivilarchitectures.Design,constructionanduseofframe-typesteel-tubescaffoldsforotherpurposes（normalbuildingsuchaschimneyandwatertoweretc.）mayfollowtheprinciplesinthiscode.
1.1.3Erectionheightoffloorframe-typesteel-tubescaffoldsshouldnotexceedthespecifiedheightinTable1.0.3ofthiscode.
Table1.0.3ErectionHeightofFloorFrame-TypeSteel-TubeScaffolds
StandardvalueofconstructionalloadQk（kN/m2）
Erectionheight（m）
3.0—5.0
45
3.0
60
Note:
Constructionalloadreferstothesumofconstructionalloaddistributedevenlyoneachoperationlayerwithinonespan.
1.1.4Inadditiontothiscode,designandconstructionofframe-typesteel-tubescaffoldsshallalsobeincompliancewiththerelevantcurrentnationalcompulsorystandards.
2TerminologiesandSymbols
2.1Terminologies
2.1.1Frame-typesteel-tubescaffold
Akindofstandardsteel-tubescaffold.Withbasicstructureconsistedofportecochere,xbrace,pitman,hangingbuckledscaffoldboardorhorizontalbracketandlockingarmetc.,itisprovidedalsowithhorizontalreinforcingrod,bridging,groundpole,sealbar,bracketandbase,andisconnectedtothebuilding’smainstructuresbywallconnector.
2.1.2Portecochere
Mainelementsofframesteel-tubescaffoldconsistofstandingpole,lateralpoleandstiffener,whichareweldedreliably（figure2.1.2）
Figure2.1.2PorteCochere
1—standingpole;2—stiffenerofstandingpole;3—lateralpole;
4—stiffeneroflateralpole;5—lockingpin
2.1.3Fittings
Framesteel-tubescaffoldalsocontainsotherelements（figure2.1.3）,suchaspitman,lockingarm,xbrace,horizontalbracket,hangingbuckledscaffoldboard,pedestalandbracket.
2.1.4Pitman
Adaptingpieceusedforverticalassemblingofstandingpoleofportecochere.
2.1.5Lockingarm
Adapteratassembledjointofstandingpoleofportecochere.
2.1.6Xbrace
Crossovertiebarforconnectionofeachtwoportecochere.
2.1.7Horizontalbracket
Horizontalelementhangingbuckledonlateralpoleofportecochere.
2.1.8Hangingbuckledscaffoldboard
Scaffoldboardhangingbuckledonlateralpoleofportecochere.
2.1.9Adjustablepedestal
Elementtowhichthelowerendofportecochereisinserted,transmittingforcetothefoundationandhavingadjustableheight.
2.1.10Fixedpedestal
Elementtowhichthebottomendofportecochereisinserted,transmittingforcetothefoundationandhavingnonadjustableheight.
2.1.11Adjustablebracket
Elementbeingplacedonthetopofstandingpoleofportecochere,carryingupperloadandhavingadjustableheight.
2.1.12Fixedbracket
Elementbeinginsertedonthetopofstandingpoleofportecochere,carryingupperloadandhavingnonadjustableheight.
Figure2.1.3CompositionofFrameSteel-TubeScaffold
1--portecochere;2—xbrace;3—scaffoldboard;4—pitman;5—lockingarm;
6—horizontalbracket;7—horizontalreinforcingrod;8—bridging;9—groundpole;
10—sealbar;11—pedestal;12—wallconnector;13—rail;14—armrest;
2.1.13Reinforcingmember
Memberusedforintensifyingtherigidityofscaffold（figure2.1.3）,includingbridging,horizontalreinforcingmember,sealbarandgroundpole.
2.1.14Bridging
Crossovermemberatoutersideofscaffoldandinparallelismtowall.
2.1.15Horizontalreinforcingmember
Longitudinallevelingpoleinparallelismtowall.
2.1.16Sealbar
Laterallevelingpoleinconnectionwiththebottomendofstandingpoleofbottomportecochere.
2.1.17Groundpole
Longitudinallevelingpoleinconnectionwiththebottomendofstandingpoleofbottomportecochere.
2.1.18Wallconnector
Elementforconnectionofscaffoldtomainstructureofbuilding（figure2.1.3）.
2.1.19Pacelength
Distancebetweentwolateralpolesofportecocherealongscaffoldvertically,whichamountstothesumofheightofportecochereandheightofpitman’scollar.
2.1.20Spanofportecochere
Axialdistanceoftwoadjacentstandingpolesofportecochereoutsidetheplaneofportecochere.
2.1.21Intervalofportecochere
Axialdistanceoftwoadjacentstandingpolesofportecochereinsidetheplaneofportecochere.
2.1.22Heightofscaffold
Distancefromthebottomsurfaceofpedestaltothetopendofstandingpoleofportecochereattoplayerofscaffold.
2.1.23Lengthofscaffold
Distancebetweentheoutersurfacesofstandingpolesoftwoportecocheresalongscaffoldlongitudinally.
2.2Symbols
2.2.1Loadandloadeffect
Qk—standardvalueofconstructionalload;
wk—standardvalueofwindload;
wo–basicwindpressure;
qk—standardvalueoflinearwindload;
NGk1–standardvalueofaxialforcecreatedfromself-weightofeachmeterheightofscaffold;
NGk2—standardvalueofaxialforcecreatedfromself-weightofaccessoriesofeachmeterheightofscaffold;
ΣNQik–sumofstandardaxialforcecreatedfromconstructionalloadoneachoperationlayer;
N—designvalueofaxialforceactingononeportecochere;
Mk—standardvalueofbendingmomentcreatedbywindload;
Nt（Nc）—designvalueoftensile（compression）forcecreatedfromwindloadandotherfactors;
Nw—designvalueoftensileforceorcompressionactingonwallconnectorbywindload.
2.2.2Designindexofmaterialsandelements
f—designedstrengthofsteelmaterial;
Nv—designvalueoftensile（compression）forceforconnectionsbetweenwallconnectorandscaffold,andbetweenwallconnectorandmainstructures.
2.2.3Geometricalparameters
A1—grosssectionalareaofstandingpoleofportecochere;
A—grosssectionalareaofoneportecochereorwallconnector;
I0—grosssectionalinertiamomentofstandingpoleofportecochere;
I1—grosssectionalinertiamomentofstiffenerofportecochere;
I--conversionsectionalinertiamomentofstandingpoleofportecochere;
h1—stiffenerheightofstandingpoleofportecochere（brieflycalledasstiffenerofportecochere）
h0—heightofportecochere;
i—conversionsectional
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