大跨越输电塔-线体系的风控效果研究
|
摘要
本文研究了大跨越输电塔-线体系风控效果的敏感性和橡胶铅芯阻尼器的实用性,从橡胶铅芯阻尼器的变形、刚度和阻尼各自的减振效果等方面验证了阻尼器的风控效果。研究表明:阻尼器控制后大跨越输电塔-线体系的位移响应均大幅降低;各风向角动风作用下均会引起大跨越输电塔-线体系的横线向和顺线向振动;同时,位移响应的最不利风向角与内力响应的最不利风向角不一定相同。塔高和输电线张力均会影响大跨越输电塔-线体系的横线向与顺线向的位移和加速度响应和风控效果。在设计风速下,安装于优化位置的橡胶铅芯阻尼器均能正常工作,其刚度和阻尼对大跨越输电塔-线体系的风控效果均有贡献,阻尼发挥了主导作用。
In this paper,the sensitivity of the controlling effect and the practicality of LRD were studied for large-span transmission tower-line system.According to the research on the displacement of the main material under five wind directions,the effects of wind-induced vibration controlling were obtained.Dynamic wind in different directions would lead to both transverse and longitudinal vibration of the tower.The most disadvantageous wind direction of the displacement and inner force are not always identical,so the different input wind direction in engineering design should be considered.According to the research on the deformation,stiffness and damping effect of LRD,the controlling effect is verified.The response and controlling effect of displacement and acceleration in transverse and longitudinal would be affected by tower height and tension of transmission lines.It is also proved that: all the LRD are ensured to work under design wind velocity according to the research on LRD deformation;and the controlling effect is not ideal when only member stiff is increased according to the research on controlling effect under dynamic wind when apply only stiff to the members on which the dampers used to be applied.
In this paper,the sensitivity of the controlling effect and the practicality of LRD were studied for large-span transmission tower-line system.According to the research on the displacement of the main material under five wind directions,the effects of wind-induced vibration controlling were obtained.Dynamic wind in different directions would lead to both transverse and longitudinal vibration of the tower.The most disadvantageous wind direction of the displacement and inner force are not always identical,so the different input wind direction in engineering design should be considered.According to the research on the deformation,stiffness and damping effect of LRD,the controlling effect is verified.The response and controlling effect of displacement and acceleration in transverse and longitudinal would be affected by tower height and tension of transmission lines.It is also proved that: all the LRD are ensured to work under design wind velocity according to the research on LRD deformation;and the controlling effect is not ideal when only member stiff is increased according to the research on controlling effect under dynamic wind when apply only stiff to the members on which the dampers used to be applied.
引文
[1]李黎,尹鹏.一种橡胶铅芯阻尼器[P].专利号ZL200820192806.5.(Li Li,Yin Peng.A Lead-core rubberdamper[P].Patent no.200820192806.5(.in Chinese))
[2]李黎,尹鹏.大跨越输电塔-线体系风振控制研究[J].工程力学,2008,25(2):213-229(Li Li,Yin Peng.The researchon wind-induced vibration control for large-span electricaltransmission tower-line system[J].Engineering Mechanics,2008,25(Ⅱ):213-228(in Chinese))
[3]尹鹏,李黎,梁政平.粘弹铅芯阻尼器在控制输电塔风振反应中的应用[J].振动与冲击,2007,26(8):1-4(YinPeng,Li Li,Liang Zhengping.Wind-induced vibration controlfor electrical transmission towers by using lead viscoelasticdampe[rsJ].Journal of Vibration and Shock,2007,26(8):1-4,8-9(in Chinese))
[4]Yin Peng,Li Li,Hu Liangxia.Wind-induced vibrationcontrol of long-span power transmission tower[J].Journal ofChongqing University English Edition,2009,8(2):112-124
[5]Liang Zhengping,Li Li,Yin Peng et al.Application of leadviscoelastic dampers to wind vibration control on long-spanpower transmission tower[J].Journal of Southwest JiaotongUniversity,2008,16(4):320-328
[6]尹鹏,李黎,胡亮霞,等.橡胶铅芯阻尼器控制下输电塔风振响应研究[J].电力建设,2008,29(10):1-4(YinPeng,Li Li,Hu Liangxia,et al.Study on transmission toweraeolian vibration control using lead-core rubber damper[J].Electric Power Construction,2008,29(10):1-4(.in Chinese))
[7]尹鹏,李黎,胡亮霞,等.大跨越输电塔的地震响应研究[J].电力建设,2008,29(12):13-17(Yin Peng,Li Li,HuLiangxia,et al.Study on seismic responses of large crossingspan transmission towers[J].Electric Power Construction,2008,29(12):13-17(in Chinese))
[8]尹鹏,李黎,胡亮霞,等.橡胶铅芯阻尼器控制下输电塔风振系数研究[J].水电能源科学,2009,27(1):187-191(Yin Peng,Li Li,Hu Liangxia,et al.Research ofwind-induced vibration coefficient for transmission towersusing lead rubber dampers[J].Water Resources and Power,2009,27(1):187-191(in Chinese))
[9]李黎,张行,尹鹏.大跨越输电线路脱冰跳跃反应的控制研究[J].振动与冲击,2008,27(10):61-64(Li Li,Zhang Hang,Yin Peng.Investigation on the control of thejumping induced by the ice-shedding of the big-spantransmission lines[J].Journal of Vibration and Shock,2008,27(10):61-64(in Chinese))
[10]李黎,尹鹏,王开明,等.不同风向角动风下大跨越输电塔风振响应分析[J].武汉理工大学学报,2009,31(23):68-76(Li Li,Yin Peng,Wang Kaiming,et al.Analysis of wind-induced vibration for big2span electricaltransmission tower under different wind directions[J].Journal of Wuhan University of Technology,2009,31(23):68-76(in Chinese))
[11]张行,李黎,尹鹏.地震作用下大跨越输电塔弹性动力稳定性能探讨[J].电力建设,2008,29(11):6-11(Zhang Hang,Li Li,Yin Peng.Study on large spantransmission tower elastic dynamic stability under earthquake[J].Electric Power Construction,2008,29(11):6-11(inChinese))
[12]胡亮霞,李黎,尹鹏.橡胶铅芯阻尼器控制下大跨越输电塔可靠性分析[J].电力建设,2008,29(11):19-23(Hu Liangxia,Li Li,Yin Peng.Reliability analysis of largespan transmission tower controlled by lead-core rubberdampers[J].Electric Power Construction,2008,29(11):19-23(in Chinese))
[13]梁峰,李黎,尹鹏.大跨越塔-线体系数值分析模型的研究[J].振动与冲击,2007,26(2):61-65(Liang Feng,Li Li,Yin Peng.Investigation on numerical model ofelectrical transmission tower-line system with a big span.Journal of Vibration and Shock[J].2007,26(2):61-65(in Chinese))
[2]李黎,尹鹏.大跨越输电塔-线体系风振控制研究[J].工程力学,2008,25(2):213-229(Li Li,Yin Peng.The researchon wind-induced vibration control for large-span electricaltransmission tower-line system[J].Engineering Mechanics,2008,25(Ⅱ):213-228(in Chinese))
[3]尹鹏,李黎,梁政平.粘弹铅芯阻尼器在控制输电塔风振反应中的应用[J].振动与冲击,2007,26(8):1-4(YinPeng,Li Li,Liang Zhengping.Wind-induced vibration controlfor electrical transmission towers by using lead viscoelasticdampe[rsJ].Journal of Vibration and Shock,2007,26(8):1-4,8-9(in Chinese))
[4]Yin Peng,Li Li,Hu Liangxia.Wind-induced vibrationcontrol of long-span power transmission tower[J].Journal ofChongqing University English Edition,2009,8(2):112-124
[5]Liang Zhengping,Li Li,Yin Peng et al.Application of leadviscoelastic dampers to wind vibration control on long-spanpower transmission tower[J].Journal of Southwest JiaotongUniversity,2008,16(4):320-328
[6]尹鹏,李黎,胡亮霞,等.橡胶铅芯阻尼器控制下输电塔风振响应研究[J].电力建设,2008,29(10):1-4(YinPeng,Li Li,Hu Liangxia,et al.Study on transmission toweraeolian vibration control using lead-core rubber damper[J].Electric Power Construction,2008,29(10):1-4(.in Chinese))
[7]尹鹏,李黎,胡亮霞,等.大跨越输电塔的地震响应研究[J].电力建设,2008,29(12):13-17(Yin Peng,Li Li,HuLiangxia,et al.Study on seismic responses of large crossingspan transmission towers[J].Electric Power Construction,2008,29(12):13-17(in Chinese))
[8]尹鹏,李黎,胡亮霞,等.橡胶铅芯阻尼器控制下输电塔风振系数研究[J].水电能源科学,2009,27(1):187-191(Yin Peng,Li Li,Hu Liangxia,et al.Research ofwind-induced vibration coefficient for transmission towersusing lead rubber dampers[J].Water Resources and Power,2009,27(1):187-191(in Chinese))
[9]李黎,张行,尹鹏.大跨越输电线路脱冰跳跃反应的控制研究[J].振动与冲击,2008,27(10):61-64(Li Li,Zhang Hang,Yin Peng.Investigation on the control of thejumping induced by the ice-shedding of the big-spantransmission lines[J].Journal of Vibration and Shock,2008,27(10):61-64(in Chinese))
[10]李黎,尹鹏,王开明,等.不同风向角动风下大跨越输电塔风振响应分析[J].武汉理工大学学报,2009,31(23):68-76(Li Li,Yin Peng,Wang Kaiming,et al.Analysis of wind-induced vibration for big2span electricaltransmission tower under different wind directions[J].Journal of Wuhan University of Technology,2009,31(23):68-76(in Chinese))
[11]张行,李黎,尹鹏.地震作用下大跨越输电塔弹性动力稳定性能探讨[J].电力建设,2008,29(11):6-11(Zhang Hang,Li Li,Yin Peng.Study on large spantransmission tower elastic dynamic stability under earthquake[J].Electric Power Construction,2008,29(11):6-11(inChinese))
[12]胡亮霞,李黎,尹鹏.橡胶铅芯阻尼器控制下大跨越输电塔可靠性分析[J].电力建设,2008,29(11):19-23(Hu Liangxia,Li Li,Yin Peng.Reliability analysis of largespan transmission tower controlled by lead-core rubberdampers[J].Electric Power Construction,2008,29(11):19-23(in Chinese))
[13]梁峰,李黎,尹鹏.大跨越塔-线体系数值分析模型的研究[J].振动与冲击,2007,26(2):61-65(Liang Feng,Li Li,Yin Peng.Investigation on numerical model ofelectrical transmission tower-line system with a big span.Journal of Vibration and Shock[J].2007,26(2):61-65(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