基于软化效应的型钢混凝土节点抗剪承载力计算

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ZHAO Hang，XIAO Qingzhan （ShaanxiPolytechnic Institute，Xianyang712OOO，China）

Abstract：According totheexisting testdata，theshearbearingcapacitycalculation formulaof medium stelconcretejointsinthe TechnicalSpecificationforSteelReinforcedConcrete Structures（YB9082—2006）andtheCodeforDesignofCompositeStructures （JGJ38—2O16）arecalculated.Theresultsshowthatthecalculationresultsinthecodeareconservativeandhavealargedispersion， mainlybecausethevalueoftheconcreteitemistoosimplifed，resultinginalargedispersionofthecalculationresults.Basedonte softeningefect，consideringtheweakeningfectoftemaintensiledirectiononthestrengthofthemaincompresivedirection，the influenceofconetestrength，strpratio，sectionstelrestraintstrength，axialcompressionratiandoterfactorsisquantiatiely analyzed，andamodifedfoulaforteconcreteteinteshearbearigcapacitycalculationforulaispropoed.Theresultsshowthat theproposedformulacanreasonablyconsidertheinfluenceofvariousfactors，mprovetheaccuracyofthecalculationresultsandrduce the dispersion.

Keywords：steel reinforced concrete；shear bearing capacity of joint；softening effect

0引言

型钢混凝土结构因其高强度、高刚度、高延性等优点被广泛应用于高层及超高层建筑的抗震设计中。（剩余4683字）