钢管混凝土柱-型钢混凝土梁混合框架抗震性能分析

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1、widelyinrailwaystationconstruction．Themainworkandconclusionsareasf．ollows：(1)Basedontheplanecross—sectionassumption，theSRCsectionismeshedbythelayermethod．Atr．ansfonnationprocesswhichchangesmaterialtosectionismadeviaMatlab，andarestoringforCemodelofSRCbeambasedonmaterialisobtainedbytakingconsideringb

2、ond—slipintoconsideration．AnotherrestoringforcemodelofCFSTcolumnbasedonsectionsisalsoderiVedaccordingtoHanLinhai’stheoryofCFSTbeam．columns．(2)A仔ameofsinglespanunderquasi-staticloadcontrolledbydisplacementcontr01．Thee陌ciency0ftheproposedcustomizedPlasticHingeModeisproVedbycomparingthecustomizedPlast

3、icHingeModelandFiberModel．(3)ForthecompositeframeofCFSTcolumncombinedwithSRCbeam，plastichingeunderdi艉I．entbeam·column’slinearstif．fnessratioisanalyzedandcompared，andthenarationalbeam—coIumn’slinearstiffnessratioisobtained．(4)Theseismicbehaviorofcomposite仔ameofCFSTcolumncombinedwithSteelSRCbeamunder

4、strongearrthquakeisanalyzedbythepushoveranalysismethodandtheelastic—plasticdynamicanalysismethod．ResultsshowsthattheseismicresistanceofthefIrameiswell．aswellasthedeVelopmentoftheplastichinge，andtheinter-sto拶driRsatis母therequirementsoftheSeismicCodes．Thestructuremeetsthecodeofstrongcolumnandweakbeam

5、，andisinastateof‘‘ImmediateOccupancy"．(5)TheresultsofpushoVeranalysisandelastic—plastictimehisto叫anaIysiswithdif．ferentseismicaccelerationarecompared．Thetopdisplacementandinter-sto哕driRmeasuredinelastic-plastictimehisto秽analysisbytheproposedmodelisla曙er。Therearediff．erencesbe附eentheresultsobtainedb

6、ythesetwomethods，andthedisperslonwl量lincreaseastheaccelerationofeanhquakewaVe．Theresultobtainedbypushoverintheareasoflowseismicf．ortificationintensityisunderestimatedbutrelativelyprecise，soitcanbeconslderedassatety．However’theresultmeasuredbythepushoVeranalyslstendstobeinsecurityjandneedstobe锄ended

7、orreanalyzedbyelastlc。plastlctimehisto科analysis．Besides，theamountoftheplastichingesofthetWoanaIVsismethodsisnearlyequal，aswellastheirorderotappearanceanddist“bution．KEYWoI乇DSConcreteFilledSteelTIubular，Stee