冷弯薄壁型钢结构住宅组合墙体受剪性能研究

©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:1000-6869(2006)03-0042-06,,,(,710064):,,,(OSB)(OSB),,:,;,:;;;:TU39211:AStudyonshearresistanceofcold2formedsteelstudwallsinresidentialstructuresZHOUXuhong,SHIYu,ZHOUTianhua,DIJin(ChanganUniversity,Xian710064,China)Abstract:Thispaperadoptsthefiniteelementmethod(FEM)tostudytheshearresistanceofcold2formedsteelstudwallsinresidentialstructures.Tobuildthefiniteelementmodel,plasticshellelementisused,materialsnonlinearityandgeometriclargedeformationareconsidered.Thescrewsconnectingsheathingandframearemodeledthroughcouplingmethods.ThestudyshowsthatFEMisappropriateforthiscase,becausethebearingcapacityanddeformationofwalls,areclosetothatofformertestsinthreekindsincludingwallswithsingle2gypsum,wallswithsingle2orientedstrandboard(OSB),andwallswithgypsumsheathingonthebackandOSBsheathingonthefront.Furthermore,adetailedparametricstudybyFEMiscarriedout.Theresultsshowthatmaterialofsheathinghasgreaterinfluencestotheshear2resistanceofwalls,whilethestrengthofsteelmembershaslittleinfluence.Withthedecreaseofstudspacing,studheight,andscrewspacingintheedgeofwall,thewallpsshear2resistancehasclearlyincreased.Keywords:cold2formedsteel;compoundwalls;shearresistance;non2linearfiniteelement:(2002DF000010),(50578013):(1956-),,,,:200541,,C()U()(OSB)[1],1,,,[2]24273Vol.27,No.320066JournalofBuildingStructuresJune2006©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.,,[3],,[4,5],,,1Fig11Wallsconstruction,ANSYS[6],,2211,[6],3m214m(),C,89441512110,600mm;,9240110,214m;fy=320N/mm2;12mm,4232;9mmOSB,4819;150mm,300mm;C,C,;M16,M12212K=P(1),K,K=VBTDBdV,B,D,V;;P=D(2)=B(3),;,(1)K,DB1Table1Materialbehaviorofwallmembers/Nmm22/Nmm222106105320()01301124170166()0123OSB35007186()0130,ANSYS,[6]:shell181,1;(),,xyz,;,2,,[6],213,[6]OSBOSB(+OSB)34©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(a)x(b)x3Fig13Displacementofwallwithsingle2gypsum,35,,c,ac,bd,;;;4,,(a)x(b)OSBx4OSBFig14Displacementofwallwithsingle2OSB2,[6](6),6,(JGJ10196)[7]:2Pyy,7:Pmax,OA,A2B,BPy,y;Puu,85%7[6]2,,,24156%44©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(a)x(b)OSBx(c)x5+OSBFig15DisplacementofwallwithgypsumsheatingonthebackandOSBsheatingonthefront6[6]Fig16Comparisonofresultsbetweenexperiment[6]andfiniteelementanalysis7Fig17Determinationforspecialloadpointofspecimen0134%1184%,211%6103%,OSB26198kN,[8],OSB27184kN311%,,2[6]Table2Comparisonofresultsbetweenexperiment[6]andfiniteelementanalysisPy/kNy/mmPmax/kNmax/mm714813150911248.00717116159912959179OSB2319021150261845112122146201332619855115+OSB29112191603419959162291731719234184601113,,311Q235Q345,fy=205N/mm228,Pmax2058195kN,Pmax3209129kN,318%,31254©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.,213,OSB+OSB400mm,3,29600mm400mm,14147%24111%29196%,,3Table3Nonlinerfiniteelementanalysisresultsofwallswithdifferentsheathings/mmPmax/kN400101626009129OSB4003314760026198+OSB400451296003418492Fig19Load2deflectioncurvesofcold2formedsteelstudwalls313214m,214m217m310m,4,210,310m217m12184%;217m214m15159%,314OSB+OSB,,5,4Table4Nonlinerfiniteelementanalysisresultsofwallwithsinglegypsumsheathingboardonthefront()Pmax/kN214m214m1:112163217m214m11125:110163310m214m1125:19129102Fig110Load2deflectioncurvesofwallswithsinglegypsumsheathingboardonthefrontOSB+OSB150/150(150mm,150mm)150/3003136%2185%1193%;100/300150/3006198%1133%10154%,300mm,,64©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(310m214m)/mmPmax/kN100/3009193150/3009129150/1509160OSB100/30027134150/30026198150/15027174+OSB100/30038152150/30034184150/150351534,,,:(1),OSB3416%,36127kN+OSB34199kN(2),(3)600mm400mm,,(4),(5),[1]NorthAmericanSteelFramingAlliance(NASFA).Prescriptivemethodforresidentialcold2formedsteelframing[S].Year2000Edition.[2]YLLiew,CFDuffield.Theinfluenceofplasterboardcladwallsonthestructuralbehavioroflowriseresidentialbuildings[J].ElectronicJournalofStructuralEnginerring.2002,2(1):1-16.[3]AmericanIronandSteelInstituteShearwalldesignguide[S].1998.[4],.[J].(),2004:334-337.[5]EmadFGad,AdrianMChandler,ColinFDuffield,GraemeStark.Lateralbehaviorofplasterboard2cladresidentialsteelframes[J].JournalofStructuralEngineering,1999,125(1):32-39.[6],,.[J].,2006,38(1):83-88.[7]JGJ10196[S].[8].[M].:,2002.74