1000kV特高压同塔双回输电线路塔线耦联体系地震模拟振动台试验研究
|
摘要
为研究地震荷载下输电塔-线体系动力相互作用,以某特高压输变电工程的1000kV同塔双回输电线路为原型,进行了三塔两线缩尺模型振动台试验。探究了不同形式下的输电塔动力特性的变化规律以及地震荷载作用下导、地线非线性振动对特高压输电塔的影响,一定程度上获得了塔线体系振动过程中输电塔与地线的能量分布规律。研究结果表明:输电线对输电塔自振特性影响较大;地震作用下导、地线的非线性振动能够耗散掉部分能量,起到减震作用;地线动应力变化属于一种以塔头振动为激励源的受迫振动,其频谱峰值远离自身基频,与激励密切相关,较为接近塔体振动频率。
Taking 1 000 kV double circuit transmission lines of an ultra high voltage(UHV) transmission project as the prototype,a large shaking table test on scaled model was carried out to find out the dynamic interaction for transmission tower-line coupling system,in which,a change rule of dynamic characteristics for transmission tower with different forms as well as the effects on ultra high voltage transmission tower of nonlinear vibration in conductors and ground wires under earthquake were investigated.The features of energy distribution of transmission tower and ground wire were shown by means of power spectrum analysis.Some test results shows: the conductors have a great impact on the natural vibration properties of transmission tower;the nonlinear vibration in the conductors and ground wires play a roles as seismic reduction by dissipating some energy under earthquake;the variation of stress in ground wires is a kind of forced vibration which is excited by the vibration of tower head,its frequency is close to that of tower vibration and its peak is far away from that of the fundamental frequency,which is closely related with the excitation source.
Taking 1 000 kV double circuit transmission lines of an ultra high voltage(UHV) transmission project as the prototype,a large shaking table test on scaled model was carried out to find out the dynamic interaction for transmission tower-line coupling system,in which,a change rule of dynamic characteristics for transmission tower with different forms as well as the effects on ultra high voltage transmission tower of nonlinear vibration in conductors and ground wires under earthquake were investigated.The features of energy distribution of transmission tower and ground wire were shown by means of power spectrum analysis.Some test results shows: the conductors have a great impact on the natural vibration properties of transmission tower;the nonlinear vibration in the conductors and ground wires play a roles as seismic reduction by dissipating some energy under earthquake;the variation of stress in ground wires is a kind of forced vibration which is excited by the vibration of tower head,its frequency is close to that of tower vibration and its peak is far away from that of the fundamental frequency,which is closely related with the excitation source.
引文
[1]Xie Q,Zhu R.Earth,wind,and ice[J].Power and EnergyMagazine,2011,9(2):28-36.
[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 disaster resistance of high-voltage transmissiontower-line systems[J].China Civil Engineering Journal,2007,40(2):39-46(in Chinese).
[3]李杰.生命线工程抗震:基础理论与应用[M].北京:科学出版社,2005.Li Jie.Lifeline earthquake engineering-basic theory andapplication[M].Beijing:Science Press,2005(in Chinese).
[4]罗奇峰.日本兵库县南部地震中生命线系统的震害及其震后恢复[J].灾害学,1997,12(1):43-48.Luo Qifeng.Damages to life-line systems caused byHyogoken Nanbu,Japan,earthquake and their recovery[J].Journal of Catastrophology,1997,12(1):43-48(inChinese).
[5]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-99-033,1999.Tai Wan Center for Research on EarthquakeEngineering.Chichi earthquake disaster streamlinereporting comprehensive survey[R].NCREE-99-033,1999(in Chinese).
[6]Maeno Y,Hanada K,Sakamoto Y,et al.Dynamicproperties of UHV power transmission towers:full-scaletests and numerical investigation[C]//Proceedings of 8thWorld Conference Earthquake Engineering,SanFrancisco,America,1984.
[7]Suzuki T.Seismic response characteristics oftransmissions towers[C]//In.10 th WCEE,BalkemaRotterdam,1992:55-60.
[8]Taskov L,Bojadziev M,Stefanovski M.Experimentstudies for development and application of dampers forvibration damping at power transmission structures[C]//8th European Conference on Earthquake Engineering,1986,8(5):25-32.
[9]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).
[10]李泽.大跨越输电塔线体系地震反应分析[D].上海:同济大学,2002.Li Ze.Research on the seismic response analysis oflong-span transmission system[D].Shanghai:TongjiUniversity,2002.
[11]岳茂光,李宏男,王东升,等.行波激励下输电塔—导线体系纵向地震反应分析[J].中国电机工程学报,2006,26(23):145-150.Yue Maoguang,Li Hongnan,Wang Dongsheng,etal.Longitudinal response of the power transmissiontower-cable system under traveling seismic waveexcitations[J].Proceedings of the CSEE,2006,26(23):145-150(in Chinese).
[12]田利,李宏男,黄连壮.多点激励下输电塔—线体系的侧向地震反应分析[J].中国电机工程学报,2008,28(16):108-114.Tian Li,Li Hongnan,Huang Lianzhuang.Lateral responseof transmission tower-line system under multiple supportexcitations[J].Proceedings of the CSEE,2008,28(16):108-114(in Chinese).
[13]曹枚根,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 Meigen,Zhou Fulin,Xu Zhonggen,et al.Researchon seismic control of large crossing transmission towersfor transmission lines[J].Power System Technology,2007,31(14):45-51(in Chinese).
[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.Seismicresponses of long-span transmission tower-line system[J].Engineering Mechanics,2008,25(11):212-217(inChinese).
[15]李宏男,陆呜,王前信.大跨越自立式高压输电塔-电缆体系的简化抗震计算[J].地震工程与工程振动,1990,10(2):81-89.Li Hongnan,Lu Ming,Wang Qianxin.Simplified aseismic calculation of high voltaghe system consisting oflong span transmission lines and their supportingtowers[J].Earthquake Engineering and EngineeringVibration,1990,10(2):81-89(in Chinese).
[16]Li H N,Shi W.Simplified models and experimentalverification for coupled transmission tower–line system toseismic excitations[J].Journal of Sound and Vibration,2005,286(3):569-585.
[17]李宏男.高压输电塔抗震分析与设计[M].北京:中国电力出版社,2009:38-40.Li Hongnan.Anti-seismic analysis and design oftransmission tower[M].Beijing:China Electric PowerPress,2009:38-40(in Chinese).
[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 disaster resistance of high-voltage transmissiontower-line systems[J].China Civil Engineering Journal,2007,40(2):39-46(in Chinese).
[3]李杰.生命线工程抗震:基础理论与应用[M].北京:科学出版社,2005.Li Jie.Lifeline earthquake engineering-basic theory andapplication[M].Beijing:Science Press,2005(in Chinese).
[4]罗奇峰.日本兵库县南部地震中生命线系统的震害及其震后恢复[J].灾害学,1997,12(1):43-48.Luo Qifeng.Damages to life-line systems caused byHyogoken Nanbu,Japan,earthquake and their recovery[J].Journal of Catastrophology,1997,12(1):43-48(inChinese).
[5]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-99-033,1999.Tai Wan Center for Research on EarthquakeEngineering.Chichi earthquake disaster streamlinereporting comprehensive survey[R].NCREE-99-033,1999(in Chinese).
[6]Maeno Y,Hanada K,Sakamoto Y,et al.Dynamicproperties of UHV power transmission towers:full-scaletests and numerical investigation[C]//Proceedings of 8thWorld Conference Earthquake Engineering,SanFrancisco,America,1984.
[7]Suzuki T.Seismic response characteristics oftransmissions towers[C]//In.10 th WCEE,BalkemaRotterdam,1992:55-60.
[8]Taskov L,Bojadziev M,Stefanovski M.Experimentstudies for development and application of dampers forvibration damping at power transmission structures[C]//8th European Conference on Earthquake Engineering,1986,8(5):25-32.
[9]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).
[10]李泽.大跨越输电塔线体系地震反应分析[D].上海:同济大学,2002.Li Ze.Research on the seismic response analysis oflong-span transmission system[D].Shanghai:TongjiUniversity,2002.
[11]岳茂光,李宏男,王东升,等.行波激励下输电塔—导线体系纵向地震反应分析[J].中国电机工程学报,2006,26(23):145-150.Yue Maoguang,Li Hongnan,Wang Dongsheng,etal.Longitudinal response of the power transmissiontower-cable system under traveling seismic waveexcitations[J].Proceedings of the CSEE,2006,26(23):145-150(in Chinese).
[12]田利,李宏男,黄连壮.多点激励下输电塔—线体系的侧向地震反应分析[J].中国电机工程学报,2008,28(16):108-114.Tian Li,Li Hongnan,Huang Lianzhuang.Lateral responseof transmission tower-line system under multiple supportexcitations[J].Proceedings of the CSEE,2008,28(16):108-114(in Chinese).
[13]曹枚根,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 Meigen,Zhou Fulin,Xu Zhonggen,et al.Researchon seismic control of large crossing transmission towersfor transmission lines[J].Power System Technology,2007,31(14):45-51(in Chinese).
[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.Seismicresponses of long-span transmission tower-line system[J].Engineering Mechanics,2008,25(11):212-217(inChinese).
[15]李宏男,陆呜,王前信.大跨越自立式高压输电塔-电缆体系的简化抗震计算[J].地震工程与工程振动,1990,10(2):81-89.Li Hongnan,Lu Ming,Wang Qianxin.Simplified aseismic calculation of high voltaghe system consisting oflong span transmission lines and their supportingtowers[J].Earthquake Engineering and EngineeringVibration,1990,10(2):81-89(in Chinese).
[16]Li H N,Shi W.Simplified models and experimentalverification for coupled transmission tower–line system toseismic excitations[J].Journal of Sound and Vibration,2005,286(3):569-585.
[17]李宏男.高压输电塔抗震分析与设计[M].北京:中国电力出版社,2009:38-40.Li Hongnan.Anti-seismic analysis and design oftransmission tower[M].Beijing:China Electric PowerPress,2009:38-40(in Chinese).
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心