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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.GengdaEnergy&PowerEngineeringSchool,NorthChin
2、aElectricPowerUniversity,BaoDing071003,ChinabDepartmentofCivilEngineeringandAppliedMechanics,McGillUniversity,Montreal,CanadaH3A2K6cGuizhouElectricPowerDesignResearchInstitute,Guizhou550002,ChinadChinaElectricPowerResearchInstitute,Beijing102401,ChinaarticleinfoabstractArticlehistory:LatticeTra
3、nsmissiontowersarevitalcomponentsofoverheadtransmissionlineswhichplayanimportantReceived16September2010roleintheoperationofelectricalpowersystems.AccuratepredictionofthestructuralcapacityoflatticeReceivedinrevisedformtowersunderdifferentfailuremodesisveryimportantforaccurateassessmentoftherelia
4、bilityof19February2011transmissionlinesandpowergrids,andfordesignofefficientfailurecontainmentmeasures.Traditionally,Accepted21February2011latticetowersareanalyzedasidealtrussesorframe-trusssystemswithoutexplicitlyconsideringloadingAvailableonline23March2011eccentricitiesandslippageeffectsinbol
5、tedjoints.Sucheffectsarealwaysobservedinfull-scaletowertestsandintroducegreatdifferencesintheultimatebearingcapacityandfailuremodesobtainedfromKeywords:classicallinearanalysismodels.Inthispaperexperimentalresultsavailablefromfull-scaleprototypetestsLatticetransmissiontowerJointeccentricityofasi
6、ngle-circuit110kVandasingle-circuit220kVlatticetransmissiontowerssubjectedtodifferentloadBoltedjointslippagecasesarepresentedandcomparedwiththoseobtainedfromfourseriesofnumericalmodelsthatincludeBearingcapacityjointeccentricityeffectsanddifferentjointslippagemodels.Thenumericalsimulationresults
7、confirmPushoveranalysisthatjointslippagedramaticallyincreasesthedeformationofthelatticetowers,whileitsinfluenceonload-bearingcapacitywillvaryindifferentloadcasesaccordingtothemagnitudeofverticalloadingandthetowerfailuremode.Result