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大小:1.78 MB
页数:14页
时间:2019-08-06
《Residual strength of blast damaged reinforced concrete columns (1)》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、InternationalJournalofImpactEngineering37(2010)295–308ContentslistsavailableatScienceDirectInternationalJournalofImpactEngineeringjournalhomepage:www.elsevier.com/locate/ijimpengResidualstrengthofblastdamagedreinforcedconcretecolumnsXiaoliBao,BingLi*SchoolofCivilandEnvironmenta
2、lEngineering,NanyangTechnologicalUniversity,50NanyangAve,639798,SingaporearticleinfoabstractArticlehistory:Columnsarethekeyload-bearingelementsinframestructuresandexteriorcolumnsareprobablytheReceived1January2009mostvulnerablestructuralcomponentstoterroristattacks.Columnfailure
3、isnormallytheprimarycauseReceivedinrevisedformofprogressivefailureinframestructures.Ahigh-fidelityphysics-basedcomputerprogram,LS-DYNAwas30March2009utilizedinthisstudytoprovidenumericalsimulationsofthedynamicresponsesandresidualaxialAccepted5April2009strengthofreinforcedconcrete
4、columnssubjectedtoshortstandoffblastconditions.ThefiniteelementAvailableonline23April2009(FE)modelisdiscussedindetailandverifiedthroughcorrelatedexperimentalstudies.Anextensiveparametricstudywascarriedoutonaseriesof12columnstoinvestigatetheeffectsoftransverseKeywords:reinforcemen
5、tratio,axialloadratio,longitudinalreinforcementratio,andcolumnaspectratio.TheseReinforcedconcretecolumnBlastloadingsvariousparameterswereincorporatedintoaproposedformula,capableofestimatingtheresidualaxialNumericalsimulationcapacityratiobasedonthemid-heightdisplacementtoheightr
6、atios.ResidualaxialcapacityÓ2009ElsevierLtd.Allrightsreserved.1.Introductionexperimentalstudies.ThevalidatedFEmodelwasthenanalyzedundersimulatedblastloadsandinvestigationswerecarriedoutonColumnsarethekeyload-bearingelementsinframestructures.thedynamicresponsesandresidualaxialca
7、pacitiesofthecolumns.ExteriorcolumnsareprobablythemostvulnerablestructuralAnextensiveparametricstudywascarriedoutonaseriesof12componentstoterroristattacks.Columnfailureisnormallythecolumnstoinvestigatetheeffectofthetransversereinforcementprimarycauseofprogressivefailureinframes
8、tructures.However,ratio,long-termaxialloadratio,longit
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