钢管混凝土格构式风电机塔架节点静力性能试验研究

43520133BuildingStructureVol．43No．5Mar．2013*1112101401022100166、。、。。。TU398A1002-848X201305-0035-04Staticbehaviorstudyonlatticedconcrete-filledsteeltubularwindturbinetowerjointsLiBin1QiaoMing1GaoChunyan121ArchitectureandCivilEngineeringInstituteInnerMongoliaUniversityofScienceandTechnologyBaotou014010China2CollegeofAerospaceEngineeringNanjingUniversityofAeronauticsandAstronauticsNanjing210016ChinaAbstractSixlatticedconcrete-filledsteeltubularCFSTwindturbinetowerK-shapejointswerecarriedonthestaticloadtestwhichincludedtheweldintersectingjointandthegussetplatejoint．ThefailuremechanismandcharacteristicsonthetwokindsofK-shapejointsthedeformationdevelopmentprocessafterjointsenteredplasticstageandthestressstateanddistributionofjointintersectionareawerestudied．TheresultsshowthatthefailuremodeandmechanicalbehaviorofCFSTK-shapejointsaregreatlydifferentfromthatofthehollowsteeltubularK-shapejointsbecauseoftheexistenceofcoreconcretethefailuremodeoftheweldintersectingjointsshowthelocalbucklingofcompressionwebmemberandthatofthegussetplatejointspresentasthecompressionbucklingandtensiontearingofthegussetplateswhiletheplasticdeformationfailureoftowercolumntubewallinjointareaisnotappear．Itisalsoshownbytestresultsthatthestressdistributionoftowercolumntubewallandgussetplateinjointintersectionisextremelynon-uniformindividualpartsalreadyenterplasticstatebutsomeotherpartsarestillinelasticstate．AccordingtothefailuremodeandstressdistributionconditionsofthetwokindsofK-shapejointssomedesignsuggestionsaredrawnwhichcanprovidereferenceforthelatticedCFSTwindturbinetowerjoints．Keywordsconcrete-filledsteeltubelatticedtowerweldintersectingjointgussetplatejointstaticbehavior*510680212010Z10022011Z10062012MS0711。[e-mail]。0。、。、。。、40%100m1。。、201323。。。4。5、。、K、。11.166K。1∶1.81。。。1/mmθ1/°θ2/°JD1219×6200089×4750JD2219×6200089×4750402×180×45664θ1θ2。JD1JD23JD1-1JD1-2JD1-3JD2-1JD2-2JD2-3。20Q2352。C40∶∶∶∶∶=375∶750∶995∶110∶170∶11.5。28d6061MPaEc4.02×104MPa。2/MPa/MPa/×105MPa3104102.012954481.863044202.021.2。、。0.0512。12SAP20001.0～1.35、F=1.35F。10%1.35。5%。63435．22.13。3JD1-1JD1-2100mm。JD1-1。JD1-23mm10cm。JD1-3。4a。、。1。4b。、。。。。。。42.2、JD1-2JD2-1vonMises57。vonMises6JD2-17。6a。56。。12349876。732013567JD2-1。6b15。7。681013、1215。、。6b42。31。2。。、。3。1．M．2010．4483201311。4ANSYS、。1、。2、ANSYS。3vonMises。。4、。。-。1．M．3．2003．2．J．200941141-46．3BETTELJTHAMBIRATNAMDPERERAN．CyclicbehaviorofconcretefilledsteeltubularcolumntosteelbeamconnectionsJ．EngineeringStructures200224129-38．4．J．200424560-63．5HANLINHAIWANGWEIHUAYUHONGXIA．ExperimentalbehaviourofreinforcedconcreteRCbeamtoconcrete-filledsteeltubularCFSTcolumnframessubjectedtoISO-834standardfireJ．EngineeringStructures201032103130-3144．6．-RCJ．200838329-33．7．J．200939643-46．8．J．201245690-100．9．J．2006231199-115．10MALEKISTABBAKHHAM．Numericalstudyofslotted-web-reduced-flangemomentconnectionJ．JournalofConstructionalSteelResearch20126911-7．11．-J．2010401191-96．12．———M．2004．13．M．2003．14NIEJIANGUOBAIYUCAICS．NewconnectionsystemofconfinedconcretecolumnsandbeamsIexperimentalstudyJ．JournalofStructuralEngineering2008134121787-1799．15LIWEIHANLINHAI．SeismicperformanceofCFSTcolumntosteelbeamjointswithRCslabanalysisJ．JournalofConstructionalSteelResearch2011671127-139．382．KJ．20082512114-121．3．-KD．2009．4．M．2006．5JEFFREYAPACKER．Concrete-filledHSSconnectionsJ．JournalofStructuralEngineering19951213458-467．6GB50017—2003S．2003．7．D．2012．44