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1、NATIONALSTANDARDOFTHEPEOPLE’SREPUBLICOFCHINACodefordesignofsteelstructureGB50009-20011General1.0.1ThisCodeintendstoimplementthetechnical-economicpolicyoftheStateinthedesignofsteelstructures,byusingadvancedtechnologyandensuringeconomy,reasonableness,safety,suitabilityforuseandgoodqualityofthestructu
2、res.1.0.2ThisCodeappliestothedesignofsteelstructuresofindustrialandcivilbuildingsandalliedengineeringstructures,amongwhichmembersmadeofcold-formedsteelshapesandtheirconnectionsshallcomplywiththecurrentnationalstandard“Technicalcodeofcold-formedthinwallsteelstructures”GB50018.1.0.3Thedesignprinciple
3、softhisCodearebasedonthe“Unifiedstandardforreliabilitydesignofbuildingstructures”GB50068.Loadingsandtheircombinationvaluesassumedindesigningwiththiscodeshallcomplywiththecurrentnationalstandard“Loadcodeforthedesignofbuildingstructures”GB50009.Buildingsandengineeringstructuresinseismicregionshallfur
4、thermorecomplywiththecurrentnationalstandards“Codeforseismicdesignofbuildings”GB50011,“SeismicgroundmotionparameterzonationmapofChina”GB18306and“Designcodeforantiseismicofspecialstructures”GB50191.1.0.4Indesigningsteelstructures,designersshallconsidertherealsituationoftheproject,selectreasonablythe
5、material,thestructuralschemeanddetailingmeasures.Therequirementsofstrength,stabilityandstiffnessofthestructureduringtransportation,erectionandservice,aswellasrequirementsoffireprotectionandcorrosionresistanceshallbefulfilled.Typicalandstandardizedstructuresandstructuralmembersshouldbeadoptedinprefe
6、rence,theamountoffabricationanderectionworkshouldbereduced.1.0.5Inthedesigndocumentsofsteelstructuresshallbeindicatedthedesignservicelifeofthebuildingstructures,thesteelgrade,thecategory(orgrade)ofconnectionmaterialsandmechanicalproperties,chemicalcompositionandadditionalitemsofguaranteeofthesteel.
7、Moreover,theweldtypeandtheclassofweldquality,thelocationofendplanningforclosefittinganditsqualityrequirementshallalsobeindicated.1.0.6Thedesignofsteelstructureswithspecialrequirementsandthoseunderspecialcir
