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ID:31585231
大小:2.87 MB
页数:93页
时间:2019-01-14
《内外型钢混凝土框架筒结构多指标抗震性能分析》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
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
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