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1、型钢混凝土混合框架结构抗震性能分析AbstractTheSteelreinforcedconcretestructurehasthecharacteristicofhighprofoundintensityandrigidity,goodplasticityandtoughness,goodexcellentseismicperformance.Hybridframeofsteelreinforcedconcrete(SRC)column-steelbeamasanewtypeofstructuralsystem,aremoreandmorewidelyusedina
2、multi-high-risebuildings.ThispaperadoptslargegeneralfiniteelementanalysissoftwareSAP2000tobuilda12storyhybridframeofsteelreinforcedconcretecolumn-steelbeam,considerthethreefactorssuchassteelratioofSRCcolumn,linearstiffnessratioofbeamtocolumnandformofsteelofSRCcolumnontheseismicperforman
3、ceofthestructure.First,performmodelanalysistodiscussthevibrationcharacteristisofthestructurefromthethreefactorsforfurtherseismicanalysis.Secend,performmodesuperpositionresponsespectrumanalysisandtime-historyanalysis,intheelasticstage,todiscussthedeformationcapacityandlateralstiffnessoft
4、hestructuralfromthethreefactors.Finally,performnonlinearstaticanalysis,intheelastic-plasticstage,todiscussthelateralstiffness,deformationcapacity,ductilityandenergydissipationcapacityofthestructruefromthethreefactors.Theresultsshowthat:steelratioofSRCcolumnhasthelittleeffectiononthehybr
5、idframeofSRCcolumn-steelbeamintheelasticstage,butintotheelastic-plasticstage,asthesteelratioincreases,thestructure’slateralstiffness,deformationcapacity,ductilityandenergydissipationcapacityaresignificantlyimproved;withthelinearstiffnessratioofbeamtocolumnincreases,eitherelasticorelasto
6、plasticstage,thestructure’slateralstiffnessimprovedsignificantly,butthestructure’sdeformationcapacity,ductilityandenergydissipationdecreasesignificantly;formofsteelofSRCcolumnhasthelittleeffectiononthehybridframeofSRCcolumn-steelbeamintheelasticstage,buthasthemoresignificantlyimpactinth
7、eelastic-plasticstage.Deformationcapacityandductilityinturnisbetterasfollows:Hsteel,cross-sectionsteel,squaretubesteel,roundtubesteel.Lateralstiffnessinturnisbetterasfollows:Hsteel,squaretubesteel,roundtubesteel,cross-sectionsteel.Thisarticle’sseismicanalysisresultprovidesarefe
