建筑钢结构焊接技术规程－正文

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1、1GeneralPrinciples1.0.1Thisspecificationispreparedtoimplementthenationaltechnicalandeconomicalpoliciesinsteelstructureengineeringandtomakesurethatthespecificationisadvancedintechnology,rationalineconomics,secureandapplicableinpractice,quality-ensured.1.0.2Thisspecificationfitsforthewel

2、dingofstructuralcarbonsteelandlowalloy,highstrengthstructuralsteelofwhichthethicknessisgreaterthanorequalto3mm,whicharewidelyusedinindustrialandcivilarchitectureandstructuralsteelworkingeneralarchitecturessuchastrussorspatialgridstructure,multilayerandhigh-risebeam-columnstructure,andt

3、hewelding.Theweldingmethodsappliedincludesmanualarcwelding,gas-shieldedwelding,selfprotectionwelding,hiddenarcwelding,electroslagwelding,electrogasarcwelding,cotterweldinganditscorrespondingweldingmethodcombination.1.0.3Theweldingofstructuralsteelshouldconformtotheregulationsoftheexist

4、ingsafetytechnologyandlaborprotection.1.0.4Inadditiontothepresentspecification,theweldingofasteelstructureshouldconformtotheexistingnationalmandatorystandards.1892BasicProvisions2.0.1Thedifficultwithsteelstructuralengineeringforbuildingcanbedividedintoaverage,relativelydifficultanddiff

5、icult.Beforeundertakingaweldingworkforstructuralsteelengineering,aconstructionorganizationshouldbeprovidedwithcertaintechnicalconditionscorrespondingtotheweldingdifficulties.Thedifficultwithsteelstructuralengineeringforbuildingcanbedifferentiatedasinthefollowingtable.Table2.0.1Criterio

6、nsfordifferentiatingweldingdifficultieswithsteelstructureforbuildingAffectingfactorsofweldingdifficultiesWeldingdifficultyNodecomplexityandconstraintSheetThickness(mm)strainedconditionCarbonequivalentofsteel①(％)GeneralSimplebuttjoint,anglejoint;weldseamcancontractfreelyt<30Tensionandco

7、mpressunforgeneralstaticload