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ID:33109149
大小:10.02 MB
页数:81页
时间:2019-02-20
《近场地震动对软钢防屈曲支撑加固结构的易损性影响分析》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、西南交通大学硕士研究生学位论文第1I页AbstractInthemostcurrentanalysisforenergydissipations仃uctIlre.onlyanonlinearmodelareestablishedforenergydissipationdevice,andthelinearelasticmodelareestablishedforstrengthenedstructure.Thiscannotbeconsideredintheanalysismodelundertheinfluenceof
2、severeearthquake,theolds仃ucnlremaystillsufferfromearthquakedamage.Therefore,accordingtoamildsteelbucklingrestrainedbrace(BRB)structureproject,thispaperestablishnonlinearmodelforbothstructureandenergydissipationcomponentsinordertoreflectthenonlineardynamicresponse
3、ofreinforcedstructuretruly.AtthesalB_etime,theexistingresearchindicatesthatnonlineard)rIlamicresponseofreinforcedconcretesn-uclCurehaveobviousdifferencesbetweennearandfarfieldearthquakerecords.Thedesignofenergydissipationmakethenonlineardynamiccharacteristicsofre
4、inforcedconcretestructurebecomemorecomplex.InordertounderstandtheBRBcharacteristicsinnonlineardynamicresponseofreinforceds仃uctlⅡ.esbetweenthenearandfarfieldearthquake.thispapermakesafurtherresearchonthefollowingbasedontheIDA:①ThispaperintroducesBRBreinforcementst
5、nJcture,energydissipation,stiffnessenhancementprincipleandbasiccharacteristicsofbucklingrestrainedbraces11.uctl肛esystem.②Thispaperchoosesareinforcedconcreteframestructureoftheoldwarehouseasanexample,determinethebucklingrestrainedbraceofsteelcore,structureparamete
6、randtheaxialstiffnessbythestandardcalculatingprocessofJapaneseisolationstructureassociation.⑨Thispaperstablishedthenonlinearanalysismodelofreinforcedconcretebasedonbeamelementsfortheoldstructure,UsingthenonlinearfiniteelementanalysisprogramZues-NL.Andamildsteelda
7、mpermodelisstablishedBymeansofnonlinearlinkelement.Itformedthecompletenonlinearanalysismodelofs仃ucnIrereinforcedbyBRB.④Inthispaper,ittookIDAdynamicanalysisonreinforceds仃ucnlrebasedonthenear,farfieldearthquakerecordsprovidedbyATC-63.Andtheresultsaccordingtothediff
8、erenceofIDAcurvesandstatisticalresultsfigurereflectInfluenceofBRBreinforcedstructure’SvulnerabilitybasedontheSpectralcharacteristicsofnear,farfield黟oundmotionr
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