输电塔-线体系完全气弹模型风洞试验研究
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摘要
按照基本缩尺律,设计、制作出模拟输电塔-线体系的一塔两跨线完全气弹模型,并通过大气边界层风洞试验,测试了各种风速下输电塔在挂线和不挂线工况下的位移与加速度响应,观测了输电塔-线体系的极限风荷载和风毁模式,同时通过测量导地线线端应变和绝缘子应变,得到导地线传递给输电塔的静、动力风荷载。研究了塔线耦联对输电塔风振响应的影响,分析了单塔与输电塔-线体系气弹模型风振响应随风速的变化规律和频谱特点,得到了若干对输电塔抗风设计有参考价值的结论。
According to scaling laws,a full aero-elastic model with one tower two power lines for simulating electrical transmission tower-line systems was manufactured.Displacements and accelerations of the aero-elastic model of an electrical transmission tower with or without power lines under various wind speeds were investigated through boundary layer wind tunnel tests.The tower-line model under the maximum wind loads and wind-induced damage mode were also observed.The static and dynamic loads on an electrical transmission tower transferred from power lines were acquired by measuring the strains of the insulators and the ends of the lines.The effects of coupling between tower and power line on wind-induced vibrations of electrical transmission towers were investigated,and the wind induced responses with various wind speeds,as well as the characteristics of the spectra of wind induced dynamic responses,of the aero-elastic model of electrical transmission towers with or without power lines were analyzed.
According to scaling laws,a full aero-elastic model with one tower two power lines for simulating electrical transmission tower-line systems was manufactured.Displacements and accelerations of the aero-elastic model of an electrical transmission tower with or without power lines under various wind speeds were investigated through boundary layer wind tunnel tests.The tower-line model under the maximum wind loads and wind-induced damage mode were also observed.The static and dynamic loads on an electrical transmission tower transferred from power lines were acquired by measuring the strains of the insulators and the ends of the lines.The effects of coupling between tower and power line on wind-induced vibrations of electrical transmission towers were investigated,and the wind induced responses with various wind speeds,as well as the characteristics of the spectra of wind induced dynamic responses,of the aero-elastic model of electrical transmission towers with or without power lines were analyzed.
引文
[1]Loredo Souza A M,Davenport A G.A novel approach forwind tunnel modelling of transmission lines[J].Journal ofWind Engineering and Industrial Aerodynamic,2001,89(11/12):1017-1029
[2]Holmes J D.Along-wind responses of lattice tower:part I—derivation of expressions for gust response factors[J].Engineering Structures,1994,16(4):287-292
[3]Holmes J D.Along-wind responses of lattice tower:partⅡ—aerodynamic damping and deflections[J].Engineering Structures,1996,18(7):483-488
[4]Holmes J D.Along-wind responses of lattice tower:partⅢ—effective load distributions[J].EngineeringStructures,1996,18(7):489-494
[5]Yasui H,Marukawa H,Momomura Y,et al.Analytic studyon wind-induced vibration of power transmission towers[J].Journal of Wind Engineering and IndustrialAerodynamics,1999,87(1/2/3):431-441
[6]Battista R C,Rodrigues R S,Pfeil M S.Dynamic behaviorand stability of transmission line towers under wind forces[J].Journal of Wind Engineering and IndustrialAerodynamics,2003,91(8):1051-1067
[7]Ozono S,Maeda J,Makino M.Characteristics of in-planefree vibration of transmission line systems[J].EngineeringStructures,1988,10(4):272-280
[8]Ozono S,Maeda J,Makino M.In-plane dynamic interactionbetween a tower and conductors at lower frequencies[J].Engineering Structures,1992,14(4):210-216
[9]Zou Lianghao,Liang Shuguo,Li Q S,et al.Investigationof 3-D dynamic wind loads on lattice towers[J].Wind andStructures,2008,11(4):323-340
[10]梁枢果,邹良浩,赵林,等.格构式塔架动力风荷载解析模型[J].同济大学学报(自然科学版),2008,36(2):166-171(Liang Shuguo,Zou Lianghao,Zhao Lin,et al.Analytical model of dynamic wind loads on lattice towers[J].Journal of Tongji University(Natural ScienceEdition),2008,36(2):166-171(in Chinese))
[11]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-linesystem with a big span[J].Earthquake Engineering andEngineering Vibration,2003,23(6):63-69(in Chinese))
[12]梁波,徐建良.架空输电铁塔动力风响应的数值模拟[J].同济大学学报(自然科学版),2002,30(5):583-587(Liang Bo,Xu Jianliang.Numerical simulation ofalong-wind response of transmission towers[J].Journal ofTongji University(Natural Science),2002,30(5):583-587(in Chinese))
[13]刘群,杨进春,周粼波.高压架空输电线路钢结构塔架与导线风致耦合振动现象研究[J].中国电力,1997,30(9):50-52
[14]梁枢果.输电塔-导线体系风振响应计算与气弹模型风洞试验研究报告[R].上海:同济大学,2002
[15]楼文娟,孙炳楠,叶尹.高耸塔架横风向动力风效应[J].土木工程学报,1999,32(6):67-71(Lou Wenjuan,Sun Bingnan,Ye Yin.Across-wind dynamic response oftall latticed towers[J].China Civil Engineering Journal,1999,32(6):67-71(in Chinese))
[16]邓洪洲,朱松晔,陈晓明,等.大跨越输电塔-线体系气弹模型风洞试验[J].同济大学学报(自然科学版),2003,31(2):132-137(Deng Hongzhou,Zhu Songye,Chen Xiaoming,et al.Wind tunnel investigation on modelof long span transmission line system[J].Journal of TongjiUniversity(Natural Science),2003,31(2):132-137(inChinese))
[17]郭勇,孙炳楠,叶尹.大跨越输电塔线体系风振响应的时域分析[J].土木工程学报,2006,39(12):12-17(GuoYong,Sun Bingnan,Ye Yin,Time-domain analysis onwind-induced dynamic response of long span powertransmission line systems[J].China Civil EngineeringJournal,2006,39(12):12-17(in Chinese))
[2]Holmes J D.Along-wind responses of lattice tower:part I—derivation of expressions for gust response factors[J].Engineering Structures,1994,16(4):287-292
[3]Holmes J D.Along-wind responses of lattice tower:partⅡ—aerodynamic damping and deflections[J].Engineering Structures,1996,18(7):483-488
[4]Holmes J D.Along-wind responses of lattice tower:partⅢ—effective load distributions[J].EngineeringStructures,1996,18(7):489-494
[5]Yasui H,Marukawa H,Momomura Y,et al.Analytic studyon wind-induced vibration of power transmission towers[J].Journal of Wind Engineering and IndustrialAerodynamics,1999,87(1/2/3):431-441
[6]Battista R C,Rodrigues R S,Pfeil M S.Dynamic behaviorand stability of transmission line towers under wind forces[J].Journal of Wind Engineering and IndustrialAerodynamics,2003,91(8):1051-1067
[7]Ozono S,Maeda J,Makino M.Characteristics of in-planefree vibration of transmission line systems[J].EngineeringStructures,1988,10(4):272-280
[8]Ozono S,Maeda J,Makino M.In-plane dynamic interactionbetween a tower and conductors at lower frequencies[J].Engineering Structures,1992,14(4):210-216
[9]Zou Lianghao,Liang Shuguo,Li Q S,et al.Investigationof 3-D dynamic wind loads on lattice towers[J].Wind andStructures,2008,11(4):323-340
[10]梁枢果,邹良浩,赵林,等.格构式塔架动力风荷载解析模型[J].同济大学学报(自然科学版),2008,36(2):166-171(Liang Shuguo,Zou Lianghao,Zhao Lin,et al.Analytical model of dynamic wind loads on lattice towers[J].Journal of Tongji University(Natural ScienceEdition),2008,36(2):166-171(in Chinese))
[11]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-linesystem with a big span[J].Earthquake Engineering andEngineering Vibration,2003,23(6):63-69(in Chinese))
[12]梁波,徐建良.架空输电铁塔动力风响应的数值模拟[J].同济大学学报(自然科学版),2002,30(5):583-587(Liang Bo,Xu Jianliang.Numerical simulation ofalong-wind response of transmission towers[J].Journal ofTongji University(Natural Science),2002,30(5):583-587(in Chinese))
[13]刘群,杨进春,周粼波.高压架空输电线路钢结构塔架与导线风致耦合振动现象研究[J].中国电力,1997,30(9):50-52
[14]梁枢果.输电塔-导线体系风振响应计算与气弹模型风洞试验研究报告[R].上海:同济大学,2002
[15]楼文娟,孙炳楠,叶尹.高耸塔架横风向动力风效应[J].土木工程学报,1999,32(6):67-71(Lou Wenjuan,Sun Bingnan,Ye Yin.Across-wind dynamic response oftall latticed towers[J].China Civil Engineering Journal,1999,32(6):67-71(in Chinese))
[16]邓洪洲,朱松晔,陈晓明,等.大跨越输电塔-线体系气弹模型风洞试验[J].同济大学学报(自然科学版),2003,31(2):132-137(Deng Hongzhou,Zhu Songye,Chen Xiaoming,et al.Wind tunnel investigation on modelof long span transmission line system[J].Journal of TongjiUniversity(Natural Science),2003,31(2):132-137(inChinese))
[17]郭勇,孙炳楠,叶尹.大跨越输电塔线体系风振响应的时域分析[J].土木工程学报,2006,39(12):12-17(GuoYong,Sun Bingnan,Ye Yin,Time-domain analysis onwind-induced dynamic response of long span powertransmission line systems[J].China Civil EngineeringJournal,2006,39(12):12-17(in Chinese))
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