内外型钢混凝土框架筒结构多指标抗震性能分析

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1、重庆大学硕士学位论文II英文摘要ABSTRACTTheobjectiveofthispaperistostudytheinfluenceofthreefactorsontheseismicbehaviorofinnerandouterSRCframetubes,suchasthesteelratioofSRCcolumn,thelinestiffnessratioofbeamandcolumn,thesteelratioofbeam.Multi-indexbehavioranalysisisusedtogetth

2、ereasonablerangeofthethreefactorsandtheoptimalvalues.Themainresearchstepsareasfollows:①Modeldesign.ThethreefactorsarechangedseparatelywhiletheformofsteelandtheaxialcompressionratioofSRCcolumnmuststayconstant,thenthreegroupsofstructureanalysismodelaredesignedb

3、ySATWE.②Modalanalysis.Thefirstthreeperiodaregotbymodalanalysistostudytheimpactofthethreefactorsonstructuralnaturalvibrationperiod.③Elastic-plastictime-historyanalysisunderrareearthquake.Eachmodelofmaximumstorydriftratioisgotbyelastic-plastictime-historyanalys

4、isunderrareearthquaketostudytheimpactofthethreefactorsonstructuralmaximumstorydriftratio.④Multi-indexbehavioranalysis.Bothsafetyindex(maximumstorydriftratio)andeconomyindex(mainmaterialcosts)arecomprehensivelyconsideredtoanalyzestructuralseismicbehaviorandthe

5、ntostudytheimpactofthethreefactorsonstructuralmulti-indexbehavior，andtogetthereasonablerangeofthethreefactorsandtheoptimalvalues.Thefinalresultsareasfollows:①Thestructuralperiodsincreaseswithincreasingsteelratioofcolumn,decreaseswithincreasinglinestiffnessrat

6、ioofbeamandcolumn,andremainsunchangedwithincreasingsteelratioofbeam.Thesteelratioofcolumnisthemosteffectivefactoronthestructuralperiods,thesecondislinestiffnessratioofbeamandcolumn,andthelastissteelratioofbeam.②Thistypeofstructurehasagoodseismicbehavior.Struc

7、tureswhicharedesignedbySATWEcanbasicallysatisfytheelastic-plasticdeformationcalculationunderrareearthquakeandcansatisfyseismicbehaviorobjectiveof“nocollapseunderrareearthquake”.③Thereasonablerangeofthesteelratioofcolumnis[5.0%,6.3%],theoptimalvalueis5.0%.④The

8、reasonablerangeofthestiffnessratioofbeamandcolumnis[0.38,0.44],theoptimalvalueis0.44.⑤Thereasonablerangeofthesteelratioofbeamis[4.4%,5.0%],theoptimalIII重庆大学硕士学位论文valueis5.0%.⑥Thelinestiff