日本鋼結(jié)構(gòu)設(shè)計(jì)標(biāo)準(zhǔn)

1、v1.0可編輯可修改CHAPTER1GENERAL1.1 ScopeofApplicationThisStandardappliestothestructuraldesignofsteelbuildings.TheStandard,however,neednotapplytostructuraldesignsbasedonspecialresearchstudies.1.2 StructuralSafetyVerificationTestsWhereadesignininvolvesconnectionandotherstructuraldetailsnotexpresslyprescribe

2、dinthisStandard,thestructuralsafe&ofsuchdetailsshallbeprovedbytestsorbyotherappropriatemeans.1.3 EnlargementofSectionSectionsofvariousstructuralelementsshallbeenlargedasrequired,withdueconsiderationforpracticallimitationinprecisionofstructuraldesigns,inadequacyinconstructionalworkmanship,andsuchadve

3、rsefactorsasrusting,corrosionandwearofsteelmaterials.1.4 NomenclatureAGrosssectionalarea;nominalbodyareaofahigh-strengthbolt;or2、sumofsectionalareasofcolumncomponents(mm)ANNetsection(mm2)AdSectionalareaoflacingelement;ortotalsectionalareaofapair2、oflacingelementsinthecaseofdoublelacing(mm)AfCross-se

4、ctionalareaofcompressionflange;orcross-sectionalarea11v1.0可編輯可修改2、ofeitherflange(mm)ASectionalareaofpartsincontact(mmjACross-sectionalareaofverticalorhorizontalstiffeners(mm2)AwCross-sectionalareaofwebplate(mm2)aEquivalentarealossduetorivet,boltorhigh-strengthbolt2、holes(mrfi);orspacingofintermediat

5、estiffeners(mm)2、a. .Netarealossduetorivet,boltorhigh-strengthboltholes(mm)bWidthofcompressionelementfreeatoneedgeandfixedattheother;widthofrockerorroller;orlongitudinalspacingorpitchofconsecutiveholes(mm)BendingcoefficientdependentuponmomentgradientDNominaloutsidediameterofsteelpipe;oroutsidediamet

6、erofmainsteelpipe(mm)dWidthofelementstiffenedalongtwoedges;outsidediameterofbranchpipe;widthofwebplate;ordiameterofpin(mm)diMinimumwidthoftheportionofwebplatedividesbyverticalorhorizontalstiffener(mm)2EModulusofelasticity(N/mm)eDistancebetweenaxesofgravityofcomponents(mm)2FBasicvalueusedindeterminin

7、gallowablestresses(N/mm)M21.751.05(2)Mi0.3(M2Mi)2,butnotlargerthan22v1.0可編輯可修改FsF/,3(N/mn2)fAllowablestressinmemberssubjecttorepeatedstressvariation(N/mrr)fbAllowablebendingstress(N/mm2)fbiAllowablebendingstressinbearingplatesandsimilarelements2、subjecttoout-of-planebending(N/mm)2、fb2Allowablebendin

8、gstressinpinssubjecttobending(N/mm)fcAllowablecompressivestress(N/mm2)fJAllowablecompressivestressinthetoeofthewebfilletofrolled2、shapesorbuild-upI-shapedmembers(N/mm)flAllowablebearingstressinplatesinrivetedorboltedjoints(N/mmfpiAllowablebearingstressforcontactareaofpinsandforothermilledsurfaces(N/

9、mm2)fp2Allowablebearingstressforrockersorrollers(N/mm2、fsAllowableshearstress(N/mm)fsoAllowableshearstressforhigh-strengthbolts(N/mm2)fstAllowableshearstressforhigh-strengthboltssubjecttocombined2、tensionandshear(N/mm)ftAllowabletensilestress(N/mm2)2ftoAllowabletensilestressforrivetsorbolts(N/mm)fts

10、Allowabletensilestressforrivetsorboltssubjecttocombined2、tensionandshear(N/mm)33v1.0可編輯可修改gTransversespacingbetweenfastenergagelines(mm)hDepthofbeam(mm)4、10Momentofinertiaofintermediatestiffeners(mm)4、ILMomentofinertiaofhorizontalorverticalstiffener(mm)ISRequiredmomenofinertiaofthestiffenersoncompre

11、ssionflanges(mm)iRadiusofgyration,takenaboutanaxisintheplaneofweb,ofateesectioncomprisingthecompressionflangeplusone-sixthofbeamdepthradiusofgyrationofasectionwithrespecttoaxissubjecttobuckling;orradiusofgyrationofhorizontalorverticalstiffenersontheweb(mm)i1Theleastradiusofgyrationofsectionalelement

12、sofcompressionmembers(mm)LEffectivelengthofweldinbranchconnectionofsteelpipes(mm)lLengthofmember;orlengthofdistributedload(mm)lbUnsupportedlengthofcompressionflange(mm)ldLengthoflacingelement(mm)lkEffectivelengthofcompressionmembersubjecttobuckling(mm)l1Spacingofseparatorsortieplates;orlengthofholei

13、nmemberswithcoverplateshavingholes(mm)12Longitudinalcomponentofthelengthoflacingofabuilt-upmember(cm)44v1.0可編輯可修改MBendingmoment(N?mm)MLargerbendingmomentaboutthestrongaxisattheendofamember(N?mm)M2Smallerbendingmomentaboutthestrongaxisattheendofamember(N?mm)mNumbeiofcomponentsorgroupsofcomponentsconn

14、ectedbylacingortieplatesNCompression(N)NiLargercompression(N)N?Smallercompression(N)nNumbeofstructuralplanesformedbylacingortieplatesinbuilt-upmembers;ornumberofverticalorhorizontalstiffenersPConcentratedtransverseloadorreaction;orcompressionforcomputationofbearingstress(N)pSpacingofholes(mm)QShear(

15、N)rRadiusofcurvatureofrockerorroller(mm)TTension(N)ToDesignbolttensionforhigh-strengthbolt(N)tThicknessofplate;wallthicknessofpipe;thicknessofwebplate;orplatethicknessofpin(mm)10Distancefromedgeofflangetotoeofwebfillet(mm)ZcSectionmodulusofcompressionsideofcross-section(mm3)ZtSectionmodulusoftension

16、sideofacross-section(cm3)55v1.0可編輯可修改DDistributionfactorforcompressivestress丫丫Fatiguefactor9IntersectinganglebetweentwopipesACriticalslendernessratio入入Slendernessratioofcompressionmember(lJi)入入 ySlendernessratioofbuilt-upcompressionmemberassumedtobuckleasanintegratedmember入入 yeEffectiveslendernessra

17、tioofbuilt-upcompressionmembers2、Maximumcompressivestressinwebplate(N/mm)2、o-0Allowablecompressivestressinplatesubjecttobuckling(N/mm)2222co-bBendingstressofextremefiberincompression(M/Z)(N/mm)2222to-bBendingstressofextremefiberintension(M/Z)(N/mm)2、o-cMeancompressiveStress(N/A)(N/mm)PBearingstress(

18、N/mm2)(TtMeantensilestress(TItemsofInformationtoBeGivenOnDrawings(1) Drawingsshallgivecompleteinformationondimensions,sectionalshapesandrelativepositionsofrespectivemembers.Theyshallalsoshow,intermsofdimensions,allfloorlevels,columncenters,andjointsandconnectionsofmembersDrawingsshallbepreparedtosca

19、leslargeenoughtogivetheforegoinginformationwithclarity.(2) Wherenecessary,drawingsshallshowthequalitiesofsteelmaterialstobeused.(3) Whereboltsorhigh-strengthboltsaretobeused,boltqualitiesshallbedistinctlyshownonthedrawingsasnecessary.(4) Cambersoftrussesandbeamsshallbeshownonthedrawingasnecessary.66

20、v1.0可編輯可修改(5) Wherepartsaredesignedformetal-to-metalcontactasincolumnsbearingonbaseplates,incolumnsplicesorinstiffenersbearingonbeamflanges,theextentofmillingormachiningrequiredforendsofsuchpartsshallbeindicatedondrawingsasnecessary.77v1.0可編輯可修改CHAPTER3CALCULATIONOFANDSTRESSESGeneralLoadsLoadstobeus

21、edinstructuralcalculationshall,asarule,bethoseprescribedintheEnforcementOrderoftheBuildingStandardLaw.ImpactForstructurescarryingliveloadswhichinduceimpact,thedesignloadsshallbeincreasedinaccordancewiththeassessedeffectsofsuchimpact.Wheretheeffectsofimpactarenotbasedonmeasurement,thedesignloadsmaybe

22、increasedinaccordancewiththefollowing:(1) Forstructuralsupportsofelevators:100%oftheelevatorWeight(2) Forstructuralsupportsofoverheadtravelingcranes:Wherethespeedislessthan60m/minute10%ofthewheelloadWherethespeedis60m/minuteorover20%ofthewheelloadIfjointlessrailisused,60m/minuteintheaboverequirement

23、maybereplacedby90m/minute.(3) Forsupportsofmotorizedequipment:Notlessthan20%oftheequipmentweight(4) Forsupportsofequipmentdrivenbyreciprocatingengines:88v1.0可編輯可修改Notlessthan50%oftheequipmentweight(5) Forhangerssuspendingfloorsorbalconies:30%oftheliveloadthereonCraneRunwayLateralForces(1) BrakingFor

24、ceintheDirectionofCraneTravelThisshallbetakenas15%ofeachwheelloadsubjecttobrakingforce,asappliedtothetopofthecranerail.(2) HorizontalForcesNormaltotheDirectionofCraneTravelCranesupportinggirdersonbothendsofacraneshallbeconsideredassubjectedsimultaneouslyto10%ofthecranewheelloadsactingnormaltothedire

25、ctionofcranetravel.Forcomputation,thecranetrolleyandliftedloadshallbeassumedtobeinthemostunfavorablecondition.(3) DiagonalTensionWheretheloadtobeliftedispulledbyacraneinadiagonaldirection,thestressinducedinthestructurebysuchoperationshallbetakenintoaccount.(4) EarthquakeForcesEarthquakeforcesactingo

26、ncranesshallbeassumedasappliedatthetopofthecranerail.Unlessotherwisespecified,theweightofliftedloadmaybedisregardedincomputingtheweightofacrane.RepeatedVariationofStresses99v1.0可編輯可修改Formemberssubjectedtorepeatedvariationofstresses,thedesignstressesshallbeincreasedtoallowfortheeffectsofmaterialfatig

27、ueinaccordancewithChap.7.ThermalStressesForstructuressubjecttolargevariationoftemperature,thermaleffectsshallbegivendueregardinstructuraldesign.CombinationofStressesStressesineachstructuralcomponentshallgenerallybecombinedinaccordancewithTable3.1,andfurtherasspecifiedbelow:TableCombinationofStressFo

28、rgeneralForareassubjectLoadingconditionsareastoheavysnowfallPermanentloadingUndernormalloadG+PG+P+SUndersnowloadG+P+SG+P+STemporaryloadingUnderstormloadG+P+WG+P+WG+P+S+WUnderseismicloadG+P+KG+P+S+KSymbols1010v1.0可編輯可修改G:StressduetodeadloadasprescribedbytheEnforcementOrderoftheBuildingStandardLawP:St

29、ressduetoliveloadasprescribedbytheaforesaidOrderS:StressduetosnowloadasprescribedbytheaforesaidOrderW:StressduetowindloadasprescribedbytheaforesaidOrderK:StressduetoseismicloadasprescribedbytheaforesaidOrder(1) Incombiningstresses,thestressinducedbycranesinstructuralsupportsshallberegardedasstressdu

30、etoliveload.(2) Wheremorethanonecranesimultaneouslyactsonstructuralsupports,thestressesduetocranesshallbecombinedforthemostunfavorablecasewhichispresumableinthecourseofactualcraneoperation.(3) Fordesigncomputationofcolumnjointsandcolumnbases,stresscombinationsinwhichstormorseismicloadisinvolvedshall

31、alsobeinvestigatedforcaseswhereliveloadsaredisregarded.1111CHAPTER 4MATERIALSQualitiesUnlessotherwiseprovided,structuralmaterialsshallbeofthequalitiesspecifiedintheapplicablestandardslistedinTable.TableStandardsPrescribingQualityofStructuralMaterialsNumbersRolledSteelforConstructionStructure:SN400A,

32、SN400B,SN400C,SN490BandSN490CRolledSteelforGeneralStructure:SS400,SS490andSS540RolledSteelforWeldedStructure:SM400A,BandC;SM490A,BandC;SM490YAandYB;SM520BandCandSM570CarbonSteelTubesforConstructionStructure:STKN400W,B,STKN490BJISG3444CarbonSteelTubesforGeneralStructuralPurposes:STK400andSTK490JISG34

33、66CarbonSteelSquarePipesforGeneralStructuralPurposes:STKR400andSTKR490JISG3138RolledSteelBarforConstructionStructure:1212v1.0可編輯可修改TitlesJISG3136JISG3101JISG3106JISG3114JISG3475v1.0可編輯可修改SNR400A,B,SNR490BLightGaugeSteelsforGeneralStructures:SSC400SetsofHigh-StrengthHexagonBolt,HexagonNutandPlainWash

34、ersforFrictionGripJointsRolledSteelforRivetsCoveredElectrodesforMildSteelCoveredElectrodesforHighTensile-StrengthSteelSteelWireforSubmergedArcWeldingCarbonSteelCastings:SC480CastingforWeldingStructure:SCW410,SCW480CarbonSteelForgingsShapesandSizesTableStandardPrescribingShapesandSizesofStructuralMat

35、erialsNumbersTitlesJISG3192Dimensions,WeightandPermissibleVariationsofHotRolled1313JISG3350JISG3353JISB1186JISB1178JISG3104JISZ3211JISZ3212JISZ3351JISZ3352JISG5101JISG5102JISG5201JISG3201v1.0可編輯可修改SteelSectionsDimensions,WeightandPermissibleVariationsofHotRolledSteelPlates,SheetsandStripShape,Dimens

36、ions,WeightandToleranceforHotRolledFlatSteelShape,Dimensions,WeightandToleranceforHotRolledSteelBarandBar-in-CoilCarbonSteelTubesforGeneralStructuralPurposesCarbonSteelSquarePipesforGeneralStructuralPurposesLightGaugeSteelforGeneralStructuresSetsofHigh-StrengthHexagonBolt,HexagonNutandPlainWashersfo

37、rFrictionGripJointsBasedBoltsHexagonHeadBoltsHexagonNutsPlainWashersHotHeadedRivetsRailsLightRailsTurnbucklesforStructuralPurpose1414JISG3193JISG3194JISG3191JISG3475JISG3444JISG3466JISG3350JISG3353JISB1186JISB1178JISB1180JISB1181JISB1256JISB1214JISE1101JISE1103JISA5540v1.0可編輯可修改Unlessotherwiseprovid

38、ed,structuralmaterialsshallbeoftheshapesandsizesprescribedinTable.ConstantsPhysicalconstantsforstructuralmaterialsshall,ingeneral,betakenasthevaluesgiveninTable.TablePhysicalConstantsforStructuralMaterialsMaterialModulusofelasticity(N/mm2)Shearmodulus(N/mm2)PoissonsratioCoefficientoflinearexpansion(

39、1/C)Steel,CaststealandForgedsteel205,00079,000CHAPTER 5ALLOWABLESTRESSESStructuralSteelAllowablestressesforstructuralsteelunderpermanentloadingshallbedeterminedonthebasisofthevaluesofFgiveninTable.2、TableValuesofF(N/mm)1515v1.0可編輯可修改SteelconstructionstructuresforSteelforgeneralstructuresSteelforweld

40、edstructuresSN400SNR400STKN400SN490SNR490STKN490SS400STK400STKR400SSC400SS490SS540SM400SMA400SM490SM490YSMA490STKR490STK490SM520SM570FThickness(mm)t4040t100235215325295235215275255375一235215325295355335400400AllowableTensileStressOnthenetsectionasdefinedinf,1F5where2、ft:allowablebendingstress(N/mm)(

41、2) AllowableShearStresswherefs:allowableshearstress(N/mm2)fsFs1.5Fs1616v1.0可編輯可修改(3) AllowableCompressiveStress(a) Cnthegrosssection:WhenXA0.277Ffc2-2E0.6Fwherefc:allowablecompressivestress(N/mm2)入入:slendernessratioofcompressionmember(see)E:modulusofelasticity(N/mm2)2:32_:23A:criticalslendernessrati

42、o(b) Cnthewebofrolledshapesorbuilt-upIsectionsatthetoeofthefillet:Regardlessoftherequirementof(a)above,allowablecompressivestressshallbeascomputedbyFormulabelow.Ffc1.31717v1.0可編輯可修改wherefJ:2、allowablecompressivestress(N/mm)AllowableBendingStress(a)Forflexuralmemberssuchasrolledbeams,plategirdersando

43、therbuilt-upmemberhavingsymmetricalaxisintheloadedplane(exceptforbox-typemembers),andmeetingthewidth-thicknessratiorequirementofChap.8andsubjectedtobendingaboutthestrongaxis,allowablebendingstressonextremefibersincompressionshallbetakenasthelargervaluecomputedbyFormulaor;however,suchstressshallnotex

44、ceedftonextremefibersincompressionorintension.2fb10ftC.89000where2、fb:allowablebendingstress(N/mm)lb:unbracedlengthofcompressionflange(mm)i:radiusofgyration,takenaboutanaxisintheplaneofweb,ofateesectioncomprisingthecompressionflangeplusone-sixthofthedepthofbeam(mm)1818v1.0可編輯可修改2M2M21.751.050.3,butn

45、otmorethanMiMiMandMarethesmallerbendingmomenandthelargerbendingmoment,respectively,aboutthestrongaxisattheendsofamembesubjecttobuckling.(M/M)takesapositivevalueinthecaseofsinglecurvatureandanegativevalueinthecaseofdoublecurvature.WheremomenbnthecenteroftheportionsubjecttobucklingislargerthanM,Cistak

46、enasunity.h:depthofbeam(mm)2、A:cross-sectionalareaofcompressionflange(mm)A:(seeFormula(b) Fortubularandbox-typesteelmembers,formemberslavingaxesofsymmetryintheloadedplane,subjectedtobendingabouttheweakaxisandmeetingthewidth-thicknessratiogivinginChap.8,andforgussetplatesloadedwithintheirplane,allowa

47、blebendingstressesonextremefibersintensionandcompressionshallbetakenasft.(c) Allowablebendingstressonextremefibersincompressionforchannelsandmembersiothavingaxesofsymmetryintheloadedplaneandmeetingthewidth-thicknessrequirementofChap.8shallbeasobtainedfromFormula,butnotgreaterthanft.(d) Allowablebend

48、ingstressinbearingplatesandsimilarelementssubjecttobendingoutsidetheirplaneshallbeasobtainedfromFormula.1919wherefbi:allowablebendingstress(N/mm2)(e) AllowablebendingstressinpinssubjectedtobendingshallbetakenasthevaluecomputedbyFormula.F1.1where2、fb2：allowablebendingstress(N/mm)(5) AllowableBearingS

49、tress(a) Forcontactareaofpinsandbearingstiffenersandforothermilledsurfaces,theallowablebearingstressshallbeobtainedfromFormula.f二p11.1Whenpartsincontactareadifferentinquality.Fshallbetakenasthesmallervalue,andbearingstressopshallbeobtainedbyFormula(5.12).where2、fp1:allowablebearingstress(N/mm)P:comp

50、ression(N)2022v1.0可編輯可修改fbi1.3A:generally,sectionalareaofpartsincontact(mmpin/connections,A=tdwheret=platethicknessofpin(mm)andd=diameterofpin(mm)2、o-p:bearingstress(N/mm)(b) Forrockersorrollers,allowablebearingstressshallbecomputedbyFormula.fp21.9FWhenpartsincontactaredifferentinquality,Fshallbetak

51、enasthesmallervalue,andbearingstressopshallbeobtainedbyFormula.wherefP2：allowablebearingstress(N/mm2)P:compression(N)22、E:modulusofelasticity(N/mm)b:widthofrockerorroller(mm)r:radiusofcurvatureofrockerorroller(mm)2、o-p：bearingstress(N/mm)5.2Rivets,BoltsandHigh-StrengthBolts(1) Allowabletensileandshe

52、arstressesofrivets,boltsandhigh-strengthboltsunderpermanentloadingshallbeasgiveninTable.Allowable2121v1.0可編輯可修改2)；forP0.42.PEbrv1.0可編輯可修改stressesshallbecomputedforthebodyareaoffasteners.TableAllowableStressesonRivets,BoltsandHigh-StrengthBolts(N/mm2)MaterialsTensionShearRivetsSV330andSV400155120Bolt

53、sSemi-finishedboltsmadeofSS400andSM400OtherSemi-finishedbolts12070High-strengthF8T250120boltsF10T310150(F11T)(330)(160)High-strengthboltsshallbegiventhedesignbolttensiongiveninTable,andtheyshallbesoarrangedastotransmitshearbyfriction.TableDesignBoltTensionforHigh-StrengthBolts(kN)GradesofNominalSize

54、shigh-strengthboltsM12M16M20M22M24M27M30F8T126152181229283F10T101157190226286353(2) AllowablebearingstressinplatesconnectedbyrivetsOrboltsshallbeascomputedbyFormulafortheprojectedareaobtainedbymultiplying2222v1.0可編輯可修改rivetorboltdiameterbythicknessofconnectedplates.Wherecountersunkrivetsorboltsareus

55、ed,thethicknessofconnectedplatesshallbetakenastheactualthicknessofsuchplateslessone-halfthedepthofrivetorboltheadsunkintheplates.fl1.25Fwhere2、fl:allowablebearingstress(N/mm)High-strengthboltedconnectionsneednotberestrictedbytheallowablebearingstress.5.3 WeldsAllowablestressunderpermanentloadingonef

56、fectivethroatofarcweldmaybetakenasthevaluesprescribedbelowprovidedthatweldingelectrodeusedisappropriateforthetypeofsteeltobeweldedandthatweldingisperformedundersatisfactorycontrol.WeldsinSS490andSS540steels,however,shallnotbeallowedtocarryanystress.(1) Allowablestressesforfilletweld,plugweld,slotwel

57、d,flareweld,partial-penetrationweldandthoseoneffectiveareaofweldsdescribedinChap.16andforweldsofbranchconnectionoftubularsteelmembersshallbethesameasallowableshearstressforbasemetal.(2) Allowablestressforcompletepenetrationbuttweldsshallbethesameasthatforbasemetaltobewelded.2323v1.0可編輯可修改(3) Wherest

58、eelsofdifferentqualitiesarewelded,allowablestressforweldsshallbetakenasthesmallervalueoftheallowablestressesforbasemetals.5.4 CastSteelandForgedSteelAllowablestressesforcaststeelandforgedsteelmay,whereapplicable,beconsideredthesameasthoseforcorrespondingrolledsteels.5.5 AllowableStressesforSteelMemb

59、ersSubjecttoCombinedStressesAllowablestressesformemberssubjecttobothnormalandshearstressshallsatisfyFormula.2222ftxyxy3xywhere2、o-xando-y:twonormalstressesperpendiculartoeachother(N/mm)xy:shearstressintheplaneofxando(N/mnm)5.6AllowableStressesunderTemporaryLoadingIncheckingmembersortemporaryloadingb

60、ythecombinationofstressesdescribedinChap.3,allowablestressesspecifiedinthischaptermaybeincreasedby50%.2424CHAPTER6COMBINEDSTRESSAxialCompressionandBendingMomentMembersubjectedtobothaxialcompressionandbendingmomenShallbeproportionedtosatisfyFormulasandgivenbelow,inwhich*co-bandto-bshalltakeabsoluteva