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1、EngineeringStructures33(2011)1817–1827ContentslistsavailableatScienceDirectEngineeringStructuresjournalhomepage:www.elsevier.com/locate/engstructAccuratemodelingofjointeffectsinlatticetransmissiontowersW.Q.Jianga,Z.Q.Wanga,G.McClureb,∗,G.L.Wangc,J.D.GengdaE
2、nergy&PowerEngineeringSchool,NorthChinaElectricPowerUniversity,BaoDing071003,ChinabDepartmentofCivilEngineeringandAppliedMechanics,McGillUniversity,Montreal,CanadaH3A2K6cGuizhouElectricPowerDesignResearchInstitute,Guizhou550002,ChinadChinaElectricPowerResea
3、rchInstitute,Beijing102401,ChinaarticleinfoabstractArticlehistory:LatticeTransmissiontowersarevitalcomponentsofoverheadtransmissionlineswhichplayanimportantReceived16September2010roleintheoperationofelectricalpowersystems.Accuratepredictionofthestructuralca
4、pacityoflatticeReceivedinrevisedformtowersunderdifferentfailuremodesisveryimportantforaccurateassessmentofthereliabilityof19February2011transmissionlinesandpowergrids,andfordesignofefficientfailurecontainmentmeasures.Traditionally,Accepted21February2011latt
5、icetowersareanalyzedasidealtrussesorframe-trusssystemswithoutexplicitlyconsideringloadingAvailableonline23March2011eccentricitiesandslippageeffectsinboltedjoints.Sucheffectsarealwaysobservedinfull-scaletowertestsandintroducegreatdifferencesintheultimatebear
6、ingcapacityandfailuremodesobtainedfromKeywords:classicallinearanalysismodels.Inthispaperexperimentalresultsavailablefromfull-scaleprototypetestsLatticetransmissiontowerJointeccentricityofasingle-circuit110kVandasingle-circuit220kVlatticetransmissiontowerssu
7、bjectedtodifferentloadBoltedjointslippagecasesarepresentedandcomparedwiththoseobtainedfromfourseriesofnumericalmodelsthatincludeBearingcapacityjointeccentricityeffectsanddifferentjointslippagemodels.ThenumericalsimulationresultsconfirmPushoveranalysisthatjo
8、intslippagedramaticallyincreasesthedeformationofthelatticetowers,whileitsinfluenceonload-bearingcapacitywillvaryindifferentloadcasesaccordingtothemagnitudeofverticalloadingandthetowerfailuremode.Result