8IndustrialConstructionVol.53,No.4,2023工业建筑2023年第53卷第4期电力架空导线在覆冰状态下的风振响应分析周萌1,2,3张屹垚4吴斌4(1.中冶建筑研究总院有限公司,北京100088;2.清华大学,北京100084;3.珠海深圳清华大学研究院创新中心,广东珠海519080;4.北京航空航天大学交通科学与工程学院,北京100191)摘要:为研究电力架空导线自然风作用下的振动响应特征以及其受覆冰、防振锤等因素的影响,以某地区典型大跨度输电导线为研究对象,基于随机过程理论的谐波叠加法建立了设定工况下的脉动风模型,并进一步获得了自然风荷载的数学模型。采用通用有限元软件ANSYS对导线进行动力响应分析,对比了在自阻尼情况下裸导线和覆冰导线的风振响应特征。最后,通过将防振锤简化为弹簧振子,对覆冰导线-防振锤体系进行动力响应模拟,验证了多点集中布置防振锤对于控制导线在顺风向与垂直风向的振动响应均有一定的效果。关键词:输电导线;脉动风;风振;防振锤;动力响应分析DOI:10.13204/j.gyjzG21070113Wind-InducedVibrationResponseAnalysisofOverheadTransmissionLinesUnderIcingConditionZHOUMeng1,2,3ZHANGYiyao4WUBin4(1.CentralResearchInstituteofBuildingandConstructionCo.,Ltd.,MCCGroup,Beijing100088,China;2.TsinghuaUniversity,Beijing100084,China;3.TsinghuaInnovationCenterinZhuhai,Zhuhai519080,China;4.SchoolofTransportationScienceandEngineering,BeihangUniversity,Beijing100191,China)Abstract:Toinvestigatethevibrationresponsecharacteristicsofoverheadtransmissionlinesandtheinfluenceoficingandanti-vibrationdampers,atypicallong-spanconductorwastakenastheresearchobject.Thefluctuatingwindmodelwasestablishedwiththeharmonicsuperpositionmethodbasedonthetheoryofstochasticprocess,andthen,thefunctionalexpressionofnaturalwindloadwasobtained.ThedynamicanalysisofconductorswascarriedoutbythegeneralfiniteelementsoftwareANSYS.Intheself-dampingcondition,thewind-inducedvibrationresponsesofbareconductorandice-coveredconductorwereanalyzedandcompared.Finally,bysimplifyingtheanti-vibrationdampersasaspringvibrator,thedynamicresponsesimulationwasconductedonthesystemofice-coveredconductorsandanti-vibrationdampers,theeffectofthemulti-pointcentrallyarrangeddampersincontrollingthevibrationresponse...
