JG145EnglishCFV3August2019英文版共39页文档

1、sRepublicofIndustryTechnicalSpecificationofthePeopleChinaTechnicalSpecificationforPost-installedFasteningsinConcreteStructuresJGeijingContents1 General2 Terminologyandsymbols2.1 MaterialsConcretebasematerialAnchorsAdhesivematerialofbondedanchors2.2 BasisofdesignTypeandoperatingprinciple

2、sDesignandsafetyconcept2.3 StaticanalysisGeneralTensionloadsactingonanchorgroupShearloadsactingonanchorgroup2.4 UltimatelimitstateResistancetotensionloadsResistancetoshearloadsResistancetocombinedtensionandshearloads3 Anti-seismicdesign4 Structuralrequirements4.1 InstallationandacceptanceGeneralDril

3、lingholeInstallationandfasteningInspectionandacceptanceofinstallationAnnexATestingmethodonsite1 General1.0.1Thisstandardiscompiledforpost-installedanchoringtechnologyensuringreliable,safeandeconomicaldesigns,constructionandoperation.1.0.2Thisstandardappliestotheuseofpost-installedanchoringsysteminno

4、rmalweightconcrete.Itdoesnotcoveranchoragetomasonryandlightweight/gasconcrete.1.0.3Anchordesignshouldbebasedonapplication(structuralelementsornon-structuralelements),load(tension,compression,moment,shearorcombinedtensionandcompression),actionandsafetylevel(importantornormal),etc.1.0.4Thedesign,insta

5、llationandacceptaneeofpost-installedanchoringsystemsshouldcomplywiththisstandardandrelevantmandatoryrequirementofcurrentnationalcodes.1.0.5Ingeneral,thisstandardisintendedtoaddressassessmentanddesignofadhesiveanchoringsystemswhereanchortheoryapplies(seeFig.below).Itisnotintendedtoaddresstheassessmen

6、tanddesignofpost-installedreinforcingbarsproportionedaccordingtotheconceptofreinforcementdevelopment(seeFig.below).I)ReinforcementdesignedaccordingtoII)Reinforcementdesignedaccordingtorebaranchortheory(coveredinthisstandard).theory(notcoveredinthisstandard).2 Terminologyandsymbols2.1.1 TermsPost-ins

7、talledanchoringsystemsAnassemblycomprisingdrillingmethod,drillbitrequirements,cleaningmethod(ifspecifiedbyManufacturer)basematerial,anchororanchorgroupandcomponentfixedtotheconcrete.2.1.2 AnchorAsteelelementpost-installedintohardenedconcretebasematerial,usedtotransmitappliedloads.Steelelementsforadh

8、esiveanchoringsystemmayincludethreadedrods,deformedreinforcingbars,orinternallythreadedsteelsleeveswithexternaldeformations.2.1.3 ExpansionanchorsApost-installedanchorinsertedintohardenedconcretethattransfersloadstoorfromtheconcretebydirectbearingorfrictionorboth.Expansionanchorsmaybetorque-controll

9、ed,wheretheexpansionisachievedbyatorqueactingonthescreworbolt;ordisplacement-controlled,wheretheexpansionisachievedbyimpactforcesactingonasleeveorplugandtheexpansioniscontrolledbythelengthoftravelofthesleeveorplug(Fig.2.1.3-1,Fig.2.1.3-2).2.1.4 Fig2.1.3-1Torque-controlledexpansionanchorsFig2.1.3-2Di

10、splacement-controlledexpansionanchorsUndercutanchorsApost-installedanchorthatdevelopsitstensilestrengthfromthemechanicalinterlockprovidedbyundercuttingoftheconcreteattheembeddedendoftheanchor.Theundercuttingisachievedwithaspecialdrillbitpriortoinstallationoftheanchororalternativelybytheanchoritselfd

11、uringtheinstallationprocedure(Fig.2.1.4).Pre-dnliedCone-AnchorsleeveundercutCompressiona) Loadcontrolledanchorinstalledbytensioninganchor,causingsleevetoexpandinpredrilledundercutb) Displacementcontrolledanchorsetinpredrilledundercutbyhammeringsleeveovercone.PredrilledConeAnctiorundercutsleevePre-dr

12、illsdAnchorunderculsleeveCotieAnchorsteereundercuLO0Wd)Displacementcontrolledanchorthatcutsitsownundercutwhilesetbyhammeringsleeveoverconee)Torque-controlledanchorsetintopredrilledundercutbyapplicationoftorqueforcingsleeveoverconeConeAntfhpr日lg号"琴f)Torque-controlledanchorthatcutsitsownundercutb

13、yapplicationofsettingtorque,forcingsleeveovercone.c) Displacementcontrolledanchorinstalledinpredrilledundercutandsetbydefineddisplacement,causingexpansionsleevetoexpandintoundercut.Fig2.1.4UndercutanchorsAdhesiveanchorsForthepurposesofthisstandard,theadhesiveanchorsystemiscomprisedofthefollowingcomp

14、onents:?Adhesiveanchor;?Proprietaryadhesivecompoundsincombinationwithamixinganddeliverysystem;?Accessoriesforcleaningthedrilledholeincludingbrushes,airnozzles,andotheritemsneededtocompletethecleaningprocess;and?Printedinstructionsfortheadhesiveanchorinstallationincludingholepreparation,injection,and

15、cureforallenvironmentalconditionspermittedinthequalification.Fig2.1.5Adhesiveanchor/rebar2.1.5 BasematerialThehardenedmaterialintowhichanchorisfastened.Normalweightconcreteisdefinedtoasthebasematerialinthisstandard.2.1.6 AnchorGroupAnumberofanchorsofapproximatelyequaleffectiveembedmentdepthwitheacha

16、nchorspacedatlessthan3heffromoneadjacentanchorwhensubjectedtotension,or3ca1fromoneormoreadjacentanchorswhensubjectedtoshear.Onlythoseanchorssusceptibletotheparticularfailuremodeunderinvestigationshallbeincludedinthegroup.FixtureComponentfixedtotheconcreteviathepost-installedanchoringsystem.2.1.7 Anc

17、horplateAsteelplatefastenedbyanchorsdirectlytransferloadsontoanchorsandbasematerial.2.1.8 FailuremodeThefailuremechanismobservedofpost-installedanchoringsystempostpeakloads.AnchorsteelfailureThesteelfailureofanchorrodorrebarundertension,shearorcombinedtensionandshear(seeFig2.1.11).TensionFig.2.1.11S

18、teelfailure2.1.9 ConcretebreakoutfailureFailuresoftheanchorinanunconfinedtensiontest,characterizedbytheformationofaconicalfracturesurfaceoriginatingatorneartheembeddedendoftheanchorelementandprojectingtothesurfaceoftheconcretetestmember(seeFig2.1.12).Fig.2.1.12Concreteconefailure2.1.10 Concretesplit

19、tingAconcretefailuremodecharacterizedbytheformationofplanarcrackintheconcreteparalleltoandextendingthroughtheaxisoftheanchor(s)(seeFig2.1.13).Fig.2.1.13Splittingfailure2.1.11 BondfailureFailuremodecharacterizedbythewithdrawaloftheanchorelementfromtheconcretewithoutruptureoftheembeddedpart,forexample

20、thethreadedrodorrebar,andwithoutformationofafull-depthconicalbreakoutsurface.Theformationoflimited-depthconicalbreakoutsurfacesshallalsobeconsideredasbond/pulloutfailure.(seeFig.2.1.13).Fig.2.1.13Bondfailure2.1.12 ConcreteedgefailureTheanchoragefailureoccursatthelateralconcretesurfacewiththeshapeofc

21、oncreteconeinthefractureareaasahalfpyramidundershearloads(seeFig.2.1.14).Fig.2.1.14Concreteedgefailure2.1.13 PryoutfailureTheanchoragefailureoccursinconcreteatthesideoppositetoshearloaddirectionbyshortstiffanchors(seeFig.2.1.15)Fig.2.1.15PryoutfailurePull-outfailureTheanchoragefailureofanchorpulledo

22、utfromdrilledholecompletely(seeFig.2.1.17)Fig2.1.17pull-outfailureFig.2.1.18pull-throughfailurePull-throughfailureTheanchoragefailureofanchorexpansionpartspulledoutfromanchorsleeveandthesleevestillkeepinsidethedrilledhole(seeFig.2.1.18).Similarly,foradhesiveanchoringsystemsbondfailuremayoccurbetween

23、theanchorelementandtheadhesiveorbetweentheadhesiveandtheborehole(seeFig.2.1.19).Adhesive-elementfailureAdhesiveboreholefailure2.1.21DesignworkingLifeTheperiodoftimeduringwhichtheperformaneeoftheanchoringsystemandstructureswillbemaintainedatalevelcompatiblewiththeintendedconditionsofuse.2.1.14 Symbol

24、sActionandResistaneeM=momentN=normalforceR=resistaneeS=actionT=torsionmomentV=shearforceNsd,Vsd=designvalueoftensile(shear)loadNgsd,Vgsd=designvalueofthesumofthetensileload(shearload)actingonthetensioned(sheared)anchorsofagroup.hhNsd,Vsd=designvalueoftensileload(shearload)actingonthemoststressedanch

25、orofananchorgroupNrks,VRk,s=characteristicresistaneeofasingleanchor(normalforce,shearforce)incaseofsteelfailureNRd,s,VRd,s=designresistaneeofasingleanchor(normalforce,shearforce)incaseofsteelfailureNrkc,NRd,c=characteristic(design)resistaneeofananchororagroupofanchors,respectively,incaseofeoncreteco

26、nefailureNRk,sp,NRd,sp=characteristic(design)resistaneeofananchororananchorgroupincaseofconcretesplittingfailureNRk,p,NRd,p=characteristic(design)resistaneeofananchorincaseofpull-outfailure2.1.15 Tinst,Ninst=installationtorquemomentandrelatedpre-tighteningtorsionVRk,c,VRd,c=characteristic(design)res

27、istaneeofananchororananchorgroupincaseofconcreteconefailureatedgeVRk,cp,VRd,cp=characteristic(design)resistaneeofananchororananchorgroupincaseofconcretepryoutfailureConcreteandsteelfyk=characteristicsteelyieldstrengthfstk=characteristicsteelultimatetensilestrength2.1.16 fcu,k=characteristicconcretec

28、ompressionstrengthmeasuredoncubescharacteristicvalueofanchors(seeFig.2.2.3)As,Wel=stressedcrosssectionofsteelandelasticsectionmodulusa=spacingbetweenouteranchorsofadjoininggroupsorbeanchors.b=widthofc,ci,C2=edgediCcDDfilHngeditensileresistanTorsion阿trolledanchoeffectsincaseoofasingle卷petolendedgeofc

29、oncreercansSchoronanchorwithouciisplacementcontrolledanchorBondedicreteconefailureaacteristicandedgeebarcmin=Ancn,imiuLmjiowtobiejedgeloadanceforpreventAnccncetemfemibeearloadsfromthespligingfaaunCidueptoiingtaindtexngedistanced=diameterofanchorbolt,threaddiameterordiameterofreardo,D=drilledholediam

30、eterdf=diameterofclearaneeholeinthefixturednom=outsidediameterofanchorh=thicknessofconcretememberho=depthofdrilledholeshi=depthbetweenthesharpendofdrilledholeandconcretesurfacehef=effectiveanchoragedepthhmin=minimumthicknessofconcretemembertopreventfromsplitting第9页failureduetoinstallationhnom=embedm

31、entdepthofanchors,si,s2=spacingofanchorsinagroupandspacingofanchorsinagroupindirection1,direction2scr,N=spacingforensuringthetransmissionofthecharacteristictensileresistaneeofasingleanchorwithoutspacingandedgeeffectsincaseofconcreteconefailuresmin=minimumallowablespacingforpreventingfromthesplitting

32、failureduetoinstallationtfix=thicknessoffixtureoranchorplateA°c,n=areaofconcreteofanindividualanchorwithlargespacingandedgedistaneeattheconcretesurface,idealizingtheconcreteconeasapyramid.Ac,n=actualareaofconcreteconeoftheanchorageattheconcretesurface.A°c,v=areaofconcreteconeofanindividual

33、anchoratthelateralconcretesurfacenotaffectedbyedgesparalleltoassumedloadingdirection,memberthicknessoradjacentanchors,assumingtheshapeoffailureareaasahalfpyramid.Ac,v=actualareaofconcreteconeofanchorageatthelateralconcretesurface.lf=effectivelengthofanchorundershearloadingPartialsafetyfactorsandcalc

34、ulatingfactorsa=partialsafetyfactortakingaccountofthesafetylevelofanchorager*=partialsafetyfactorformaterial-:;v=factortakeaccountoftheinflueneeoftheanglebetweentheloadandthedirectionperpendiculartothefreeedgeoftheconcretememberontheshearresistanee.'ec,N,'ec,v=factortakeaccountofagroupeffect

35、whendifferenttension(shear)loadareactingontheindividualanchorsofagroup.'h,v=factortakeaccountofthefactthattheshearresistancedoesnotdecreaseproportionallytothememberthickness.-re,N=theshellspallingfactortakesaccountoftheeffectofdensereinforcement.'s,N/-;s,v=thefactortakesaccountofthedisturban

36、eeofthedistributionofstressesinconcreteduetoedgeoftheconcretememberontension(shear)resistanee.'-ucr,N,'ucr,v=thefactortakesaccountofthepositioneffectoftheanchorageincrackedornon-crackedconcreteontension(shear)resistanee.Materialsofconcreteandanchorelements3.1Concretebasematerials3.1.1 Thecon

37、cretebasematerialshallbesolidandsufficientlylargetoresistandtheintendedloads.3.1.2 Excessivelyairvoidedconcrete,grout,groutlayeranddecorativemortarlayersmaynotbeconsideredassufficientbasematerial.Concretestrengthforbasematerialofpost-installedfastenersshallbeatleastC20.Theconcretestrengthandmoduluso

38、felasticityshouldbeobtainedbyon-sitetestingaccordingtoCodeforDesignofConcretestructuresGB50010.2.2 AnchorelementsThematerialsofsteelanchorelementsshallbecarbonsteel,stainiesssteeloralloysteel.Theselectionoftheanchorelementshallbebasedonthefstk=300(MPa),fykf=0.6Tstkenvironmentconditionanddurabilityre

39、quirementoftheapplication.TheperformaneeofanchorsshouldcomplywithExpansionandundercutbuildinganchorsforuseinconcrete3.2.2Thematerialsperformanceofanchormadeofcarbonsteeloralloysteelshallbedefinedbyfstkandfyf(seeTable3.2.2).Table3.2.2Thematerialperformaneeofcarbon/alloysteelperformancegrade5

40、.Characteristicfstk(MPa)0400500600800tensionstrengthCharacteristicfykorfso,2k180240320300400480640yieldstrength|MPa)|Extension圖(%)14201ratio3.2.3 ote:theperformaneegrade3.6meansTheperformancegradeofanchormadeofstainlesssteelshallbedefinedbyfstkandfyk(seeTable3.2.3).Table3.2.3Thematerialper

41、formanceofstainlesssteel(austeniticA1,A2,A3)performancegrade507080diameterofthreadrod(mm)聞39圈24圈24Characteristictensionstrengthfstk(MPa)500700800Characteristicyieldstrengthfstk(MPa)210450600Extensionratio0.6d0.4d0.3dNote:theextensionratioachievedfrom3.2.4 GB3098.6-86criteria7.13Therebarandthreadedro

42、dofbondedanchorsshouldbeHRB400orHRB335s|pelribbedrebarandQ235orQ345steelthreadedrod.TheperformaneeofribbedrebarshallcomplywithCodeforDesignofConcreteucturesGB500 Elasticmodulusofanchors:Es=2.0帥0Mpa.3.3.1 3.3AdhesivematerialofadhesiveanchoringsystemsTheanchorageperformaneeoftheadhesivemateria

43、lofadhesiveanchoringsystemsshallbedeterminedbyspecialtests.Anyextrafillerand/oradditivesareforbiddentomixwithanauthorizedbondingmaterialonsiteexceptthecommitteddosefillerand/oradditivesdescribedinManufacturer'sinstruction.Eachtypeofadhesivematerial,includingcapsulepackage,injectioncartridgeperfo

44、rmaneeandeonditionsonsite.3.3.3andbulkwithmechanicalproportioningonsite,shouldbeusedaccordingtoitsIcomponentofepoxyTheperformaneeofepoxybondingmaterialshouldcomplywiththerequirementinTable3.3.3TheperformaneeofadhesiveNo.MechanperformaneecalStrengthflexibilitybondingmaterialandofneeVscTheadrength(25c

45、)=45007Normalcureisavailableunderthe-itemperature:canbechangp'oportion.Characteristic匕2fbc,k>60N/mmC40°C,and*thes1;compression*!;Steel-steelbondingstrengthSteel-cobondingstrength5000MPa.saiiatiohcoringtimecomponentstrengthCharacteristictensionstrengtfPSk密18N/mm22m任三Elasticmodulus二5.2x?0l

46、Characteristicsioastrength"nstrengthslit-strengthfn3_I:bv,kX14N7咄fbt,kX20-N720kN/mTestingmethodvisco：methpl!iCompremethodformaterialGB1041-79testTestplasticTensionTestmethodforplasticmaterialGB104079Hl惡跑bP,ackedinjectionncretncretecurinponent1TinsteTwosteelwitharespectively,symmetricalThreadrod

47、.Component2Test"metstrength*-material*loadGB71：'I'forforshear)f.bondingtensilender86TestmetstrengthmaterialGB6329-86materimetalHB5oftensionbondingforslitbondingdaltostmethodate(50X50X5)steelrodaxesbondedonc)BulkmixedonsiteFig.3.3.2thetypesofadhesivethebiggersurfaceofaC50concretecube(70X

48、70X0).Testedundertensionloadafterthecuringtime.Temperaturefbv,k>14MPaundertransienttemperatureatGB7124-86influeneeoncharacteristic80CandsteadyresistaneeFreeze/thawinflueneeoncharacteristicGB7124-86thesurfaceoftheconcretewithintherange-45Ctemperaturewithintherange-35C60C.fbv,k>14MPaunder50cycle

49、swithinthetemperaturerange-25°C25°C.resistaneedurabilityGB7124-86,colorandcolorlesspaintlabfbv,k>14MPa,Labagingtest:>3000h.weatheredagingandradioactiveexposure4.1.1 tritiumareradiationGeneraldesignprineiples4.1IdentificationandapplicationprincipalTypesofanehorcanbedividedintoexpansio

50、n,undereut,adhesive,rebarandothertypesoffasteners.Besidesvalidationoftheperformaneeofanehoringsystemsthemselves,basematerial,theloadonanehors,thetypepffixtures,requirementsforanti-earthquakeandotherrelevantinflueneefaetors|shallbeconsideredwhenselectingananehoringsystem.4.1.2 Expansionanehor,undercu

51、tanehormaybeusedtotheconnectionofnon-structuralelements,orthestructuralelementsundertension,shearload(C_10hef)orcombinedoftensionandshear.Thelimitationoftheanehorapplicationshallcomplywiththespecificationofclause4.1.3toclause4.1.4.Note:non-structuralelementsineludenon-structuralelementsofstructures(

52、outerwall,partitionwall,curtainwall,ceiling,adboard,cabinetframe)andtheframe/bracketofequipmentsonthebuildings(elevator,lightingsandelectricpower,telecomequipments,pipesystem,heatingandair-conditionsystem,fireandsmokealarmsystem)etc.4.1.3Expansionanehorandundercutanehorcan'tbeusedtoconnectthestr

53、ucturalelementsornon-structuralelementsoflifelinestructuresundertensionload,shearloadperpendiculartoedge(C<10hef),combinedtensionandshearloads.4.1.4lAdhesiveanehoringsystemsorrebarcanbeappliedonthestructuralelementsandnon-structuralelementsundertensionload,shearloadperpendiculartoedge,combinedten

54、sionandshearloadswhileearthquakedesignlevelbelowseismicfortificationintensity=9(seeFig.2.15).4.2 Designsafetyandconcept4.2.1Thedesignofanchorageintheultimatelimitstatewithpartialsafetyfactors,basingondataobtainedfromtestandexperieneeinconstruction,isdefinedtobedesignmethodofthisstandard.4.2.2 Theint

55、endingdesignperiodofanchorageshouldbeeoncordwiththedesignperiodofconnectedstructure.Anchorageisdividedintotwosafegradesaccordingtotheseveritydegreeoftheanchoragefailures.ThesafetygradeinanchoragedesignshouldfollowTable423,andshouldnotbelessthanthatofthemainstructure.Table4.2.3Safetygradeofanchorages

56、afetygradeconsequeneeoffailureanchoringtypeflstgradelifesafetyrelevantImportantanchoragejecondgradenon-lifesafetyrelevantnormalanchorage4.2.4ThevalueofdesignresistaneeanddesignactionshouldbeshownasfollowingactionaSeR(4.2.4-1)WithearthquakeactionSkR(424-2)/'REformulas(424-3)A=factorofsafetygrade,

57、itwilltakes1.2and1.1respectivelytotheanchoragesafegradefirstgradeandsecondgrade;S=designcombinedloadsofanchorage,calculatingaccordingtoCodeofBuildingStructureLoadsandDesigningCodeforAnti-earthquake.R,Rk=design(characteristic)resistaneestrengthofanchorage;RE=partialsafetyfactorofearthquakeactionR=partialsafetyfactorformaterialdesignvalueofinternalaction(N,MV)inallchapters.4.2.5 Failuremodeshouldbecontrolledinthedesignbasedo