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双钢板组合剪力墙的抗震性能影响因素分析 Abstract Doublesteelplatecompositeshearwallshavebeenwidelyusedintheconstructionindustryduetotheirexcellentseismicperformance.However,theseismicperformanceofthesewallsisaffectedbyvariousfactors.Thispaperanalyzesthefactorsthataffecttheseismicperformanceofdoublesteelplatecompositeshearwallsandproposesmeasurestoimprovetheirseismicperformance. Introduction Doublesteelplatecompositeshearwallshavebeenincreasinglyusedintheconstructionindustryduetotheirexcellentseismicperformance.Thesewallsconsistoftwooutersteelplatesandacoremadeofconcrete,whichareconnectedbyshearconnectorstoenhancetheshearresistance.Theoutersteelplatesprovideahighdegreeofstiffnessandstrength,whiletheconcretecoreenhancestheductilityandenergydissipationcapacityofthecompositeshearwall.However,theseismicperformanceofthesewallsisaffectedbyseveralfactors,suchaswallthickness,reinforcementratio,typeofshearconnectors,andboundaryconditions.Inthispaper,weanalyzethesefactorsandproposemeasurestoimprovetheseismicperformanceofdoublesteelplatecompositeshearwalls. Factorsaffectingtheseismicperformanceofdoublesteelplatecompositeshearwalls 1.Wallthickness Thethicknessofthesteelplatesandtheconcretecoreaffecttheseismicperformanceofdoublesteelplatecompositeshearwalls.Thickerplatesandcorescanprovidehigherresistancetoshearandimprovetheductilityofthewall.However,thickerwallsalsohavehigherweight,whichincreasestheseismicdemandonthefoundationandthebuildingstructure. 2.Reinforcementratio Thereinforcementratiooftheconcretecoreaffectstheductilityandenergydissipationcapacityofthewall.Higherreinforcementratioscanimprovetheductilityandenergydissipationcapacityofthewall,butalsoincreasethecostofconstruction.Asuitablereinforcementratiocanbalancethecostandseismicperformanceofthewall. 3.Typeofshearconnectors Thetypeofshearconnectorsbetweenthesteelplatesandtheconcretecoreaffectstheshearresistanceandductilityofthewall.Differenttypesofshearconnectors,suchasheadedstuds,weldedstuds,andmechanicalconnectors,havedifferentshearresista