大跨越输电塔-线体系的平面内塔-线耦合效应与TMD减震控制研究
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摘要
建立了典型的大跨越输电塔-线体系的有限元模型,分析了独立塔和大跨越塔-线耦合体系的动力特性,基于"模态组"概念,通过两者动力特性的对比研究了大跨越输电塔-线体系的塔-线耦合效应,结果表明塔-线耦合效应对大跨越输电塔动力特性有较大影响。分别基于独立塔和塔-线耦合体系的动力特性对两个调谐质量阻尼器(tunedmass damper,TMD)的参数进行了优化,对两个TMD方案在地震动激励下的减震控制效果进行了对比。结果表明,大跨越塔-线耦合体系与独立塔的动力特性存在很大差异,在大跨越输电塔-线体系TMD减震控制中考虑塔-线耦合效应,能够更好地发挥TMD振动控制的作用。
A typical FEM model of large crossing transmission tower-lines system(LCTL) is established.The dynamic characteristics of freestanding tower and LCTL are analyzed.The effect of tower-line coupling is studied through the comparison of dynamic characteristic of the two systems based on the concept of 'mode group'.The performance of tuned mass damper(TMD)optimized with dynamic characteristics of LCTL is compared with that optimized with dynamic characteristics of freestanding tower.The results show that the dynamic characteristics of freestanding tower are significantly different from that of LCTL,and tower-line coupling affects the performance of TMD significantly for LCTL.TMD performance will be improved for LCTL when considering tower-line coupling effect.
A typical FEM model of large crossing transmission tower-lines system(LCTL) is established.The dynamic characteristics of freestanding tower and LCTL are analyzed.The effect of tower-line coupling is studied through the comparison of dynamic characteristic of the two systems based on the concept of 'mode group'.The performance of tuned mass damper(TMD)optimized with dynamic characteristics of LCTL is compared with that optimized with dynamic characteristics of freestanding tower.The results show that the dynamic characteristics of freestanding tower are significantly different from that of LCTL,and tower-line coupling affects the performance of TMD significantly for LCTL.TMD performance will be improved for LCTL when considering tower-line coupling effect.
引文
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[2]李宏男,白海峰.高压输电塔-线体系抗灾研究的现状与发展趋势[J].土木工程学报,2007,40(2):39—46.Li Hongnan,Bai Haifeng.State-of-the-art review onstudies of disater resistance of high-voltagetransmission tower-line systems[J].China CivilEngineering Journal,2007,40(2):39—46.
[3]台湾地震工程研究中心.九二一集集大地震全面勘灾精简报告[R].NCREE-99-033,台湾:台湾地震工程研究中心,1999.NCREE.Damage report on 921 Chi-chi earthquake(draft)[R].NCREE-99-033,Taiwan:NCREE,1999.
[4]曹枚银,徐忠根.输电塔线体系抗震研究现状及前瞻[A].防震减灾工程研究与进展——全国首届防震减灾工程学术研讨会论文集[C].广州:广州大学,2004,88-92.Cao Meiyin,Xu Zhonggen.Actuality anddevelopment on seismic analysis of transmission linetowers system[A].The First Symposium onProtecting Against and Mitigating EarthquakeDisasters[C].Guangzhou:Guangzhou University,2004:88—92.
[5]Ozono S,Maeda J,Makino M.Characteristics of in-plane free vibration of transmission line systems[J].Engineering Structures,1988,10(3):272-280.
[6]Ozono S,Maeda J.In-plane dynamic interactionbetween a tower and conductors at lower frequencies[J].Engineering Structures,1992,14(4):210—216.
[7]李宏男,王前信.大跨越输电塔体系的动力特性[J].土木工程学报,1997,30(5):28—36.Li Hongnan,Wang Qianxin.Dynamic character oflarge-span transmission tower system[J].ChinaCivil Engineering Journal,1997,30(5):28—36.
[8]瞿伟廉,殷惠君,陈波.输电线路动力分析的多质点模型研究[J].华中科技大学学报(城市科技版),2003,20(2):1—5.Qu Weilian,Yin Huijun,Chen Bo.Study on multi-degree-of-freedom model of transmission tower-linesystem[J].Journal of Huazhong University ofScience and Technology,2003,20(2):1—5.
[9]梁峰,李黎,尹鹏.大跨越输电塔-线体系数值分析模型的研究[J].振动与冲击,2007,26(2):74—78.Liang Feng,Li Li,Yin Peng.Investigation onnumerical model of electrical transmission tower-linesystem with a big span[J].Journal of Vibration andShock,2007,26(2):61—65.
[10]梁枢果,朱继华,王力争.大跨越输电塔-线体系动力特性分析[J].地震工程与工程振动,2003,23(6):63—69.Liang Shuguo,Zhu Jihua,Wang Lizheng.Analysis ofdynamic characters of electrical transmission tower-line system with a big span[J].EarthquakeEngineering and Engineering Vibration,2003,23(6):63—69.
[11]曹枚银,周福霖,徐忠根,等.钢管组合大跨越输电塔线体系简化模型研究[J].钢结构,2005,20(82):27—32.Cao Meiyin,Zhou Fulin,Xu Zhonggen,et al.Simplified model research of combo steel tube towerfor large crossing transmission lines[J].SteelStructure,2005,20(82):27—32.
[12]李宏男,石文龙,贾连光.导线对输电塔体系纵向振动的影响界限及简化抗震计算方法[J].振动与冲击,2004,23(2):1—8.Li Hongnan,Shi Wenlong,Jia Lianguang.The effectof lines on transmission tower system and simplifiedcalculation method[J].Journal of Vibration andShock,2004,23(2):1—7.
[13]石文龙,李宏男,贾连光.输电塔-导线耦联体系模型的振动台试验研究[J].工程力学,2006,23(5):89—93.Shi Wenlong,Li Hongnan,Jia Lianguang.Shakingtable test of coupled system of transmission lines andtowers[J].Engineering Mechanics,2006,23(5):89—93.
[14]沈国辉,孙炳楠,何运祥,等.大跨越输电塔线体系的地震响应研究[J].工程力学,2008,25(11):212—217.Shen Guohui,Sun Bingnan,He Yunxiang,et al.Seismic response of long-span transmission tower-linesystem[J].Engineering Mechanics,2008,25(11):212—217.
[15]柳国环,李宏男.高压输电塔-线体系风致动力响应分析与优化控制[J].中国电机工程学报,2008,28(19):131—137.Liu Guohuan,Li Hongnan.Analysis and optimizationcontrol of wind-induced dynamic response for high-voltage transmission tower-line system[J].Proceedings of the CSEE,2008,28(19):131—137.
[16]黄斌,唐家祥.大跨越自立式高压输电塔风振控制[J].特种结构,1997,14(3):49—52.Huang Bin,Tang Jiaxiang.Control on wind vibrationfor transmission tower-line system of large crossing[J].Journal of Unique Construction,1997,14(3):49—52.
[17]贺业飞,楼文娟,孙炳楠,等.悬挂质量摆对大跨越输电塔的风振控制[J].浙江大学学报(工学版),2005,39(12):1 891—1 896.He Yefei,Lou Wenjuan,Sun Bingnan,et al.Wind-induced vibration control of long span transmissiontower with suspended mass pendulums[J].Journal ofZhejiang University,2005,39(12):1 891—1 896.
[18]曹枚银,周福霖,徐忠根,等.大跨越输电塔线体系减震控制分析研究[J].电网技术,2007,31(14):45—51.Cao Meiyin,Zhou Fulin,Xu Zhonggen,et al.Research on seismic control of large crossingtransmission towers for transmission lines[J].PowerSystem Technology,2007,31(14):45—51.
[19]秦丽.结构风振与地震响应的TMD控制[D].北京:北京工业大学,2008.Qin Li.TMD control of structural response underwind and earthquake[D].Beijing,Beijing Universityof Technology,2008.
[20]Sadek F,Mohraz B,Taylor A W,et al.A method ofestimating the parameters of tuned mass dampers forseismic applications[J].Earthquake Engineering andStructural Dynamics,1997,26:617—635.
[21]Wu J N,Chen G D,Lou M L.Seismic effectivenessof tuned mass dampers considering soil-structureinteraction[J].Earthquake Engineering andStructural Dynamics,1999,28(11):1 219—1 233.
[22]Ghosh A,Basu B.Effect of soil interaction on theperformance of tuned mass dampers for seismicapplications.Journal of sound and vibration,2004,274(3-5):1 079—1 090.
[23]Kawaguchi A,Omote Y.Time history response of atall building with a tuned mass damper under windforce.Journal of wind engineering and industrialaerodynamics,1992,43(1-3):1 949—1 960.
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