橡胶铅芯阻尼器控制下输电塔风振系数研究
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摘要
以向家坝—上海、锦屏—苏南±800 kV特高压直流输电线路工程为例,介绍了橡胶铅芯阻尼器在一般线路输电塔风振控制中的应用。通过三维有限元仿真和风荷载的数值模拟,对单塔、输电塔—线体系在阻尼器控制前后的风振响应进行了时程分析。统计得到了输电塔结构的风荷载调整系数取值,并与多种现行规范的取值进行比较。结果表明,输电塔在横担位置风荷载调整系数存在突变现象,现行规范无法考虑这一影响,在设计时应引起重视;导(地)线使输电塔体系的质量、刚度和阻尼有所增加,从而产生了对塔架振动的抑制作用,因此在风振设计中应考虑塔线耦合的影响;输电塔—线体系采用橡胶铅芯阻尼器后风荷载调整系数得到有效减少且减少率沿塔高逐渐增大。
Based on the Xiangjiaba-Shanghai,Jinping-Sunan's special high-voltage DC ± 800kV transmission line project,the lead rubber damper(LRD) applied for controlling wind-induced vibration of transmission towers is introduced.According to the numerical simulation of three dimensional finite element and wind loads,the wind-induced vibration response of single-tower and tower-line under wind load are obtained,the effects of wind-induced vibration control are also discussed.The transmission tower's wind-induced vibration coefficient can be calculated according to the results of time-history analysis,the comparison of the wind-induced vibration coefficient with that in Code are carried.There is a sudden change in the crossarm position of the transmission tower to the wind-induced vibration coefficient,the present standards are unable to consider it,on which the attention should be paid.The quality,rigidity and the damping of the transmission tower-line system are increased by the transmission lines,resulting in the reduction of the tower vibration response,so the impact of coupling should be considered in wind-tower design.The wind-induced vibration coefficient obtains effective reduction by using the LRDs,and the reduction ratio is gradually increased along the tower.
Based on the Xiangjiaba-Shanghai,Jinping-Sunan's special high-voltage DC ± 800kV transmission line project,the lead rubber damper(LRD) applied for controlling wind-induced vibration of transmission towers is introduced.According to the numerical simulation of three dimensional finite element and wind loads,the wind-induced vibration response of single-tower and tower-line under wind load are obtained,the effects of wind-induced vibration control are also discussed.The transmission tower's wind-induced vibration coefficient can be calculated according to the results of time-history analysis,the comparison of the wind-induced vibration coefficient with that in Code are carried.There is a sudden change in the crossarm position of the transmission tower to the wind-induced vibration coefficient,the present standards are unable to consider it,on which the attention should be paid.The quality,rigidity and the damping of the transmission tower-line system are increased by the transmission lines,resulting in the reduction of the tower vibration response,so the impact of coupling should be considered in wind-tower design.The wind-induced vibration coefficient obtains effective reduction by using the LRDs,and the reduction ratio is gradually increased along the tower.
引文
[1]中华人民共和国建设部.建筑结构荷载规范(GB50009-2001)[S].北京:中国建筑工业出版社,2002.
[2]同济大学.高耸结构设计规范(GBJ135-90)[S].北京:中国建筑工业出版社,1991.
[3]中国电力工程顾问集团公司西南电力设计院.架空送电线路杆塔结构设计技术规定(DL/T5154-2002)[S].北京:中国电力出版社,2002.
[4]国家电力公司华东电力设计院,国家电力公司电力规划设计总院.110~500 kV架空送电线路设计技术规程(DL/T5092-1999)[S].北京:中国电力出版社,1999.
[5]邵天晓.架空送电线路的电线力学计算(第二版)[M].北京:中国电力出版社,2003.
[6]黄本才.结构抗风分析原理及应用[M].上海:同济大学出版社,2001.
[7]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):1-4,8
[8]钟寅亥,李黎,江宜诚.粘弹性阻尼器在控制输电塔风振反应中的应用[J].华中科技大学学报(城市科学版),2003,20(2):69-71
[9]江宜诚,钟寅亥,樊剑,等.粘弹性阻尼器控制下大跨越输电塔风振响应分析[J].特种钢结构,2003,(18)4:34-36
[10]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
[11]夏正春,李黎,梁政平,等.输电塔在线路断线作用下的动力响应[J].振动与冲击,2007,26(11):45-49
[12]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):61-64,80
[13]夏正春,梁政平,李黎,等.大跨越输电塔线的断线振动及控制[J].武汉理工大学学报,2008,30(9):84-88
[14]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
[15]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
[16]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
[17]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
[2]同济大学.高耸结构设计规范(GBJ135-90)[S].北京:中国建筑工业出版社,1991.
[3]中国电力工程顾问集团公司西南电力设计院.架空送电线路杆塔结构设计技术规定(DL/T5154-2002)[S].北京:中国电力出版社,2002.
[4]国家电力公司华东电力设计院,国家电力公司电力规划设计总院.110~500 kV架空送电线路设计技术规程(DL/T5092-1999)[S].北京:中国电力出版社,1999.
[5]邵天晓.架空送电线路的电线力学计算(第二版)[M].北京:中国电力出版社,2003.
[6]黄本才.结构抗风分析原理及应用[M].上海:同济大学出版社,2001.
[7]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):1-4,8
[8]钟寅亥,李黎,江宜诚.粘弹性阻尼器在控制输电塔风振反应中的应用[J].华中科技大学学报(城市科学版),2003,20(2):69-71
[9]江宜诚,钟寅亥,樊剑,等.粘弹性阻尼器控制下大跨越输电塔风振响应分析[J].特种钢结构,2003,(18)4:34-36
[10]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
[11]夏正春,李黎,梁政平,等.输电塔在线路断线作用下的动力响应[J].振动与冲击,2007,26(11):45-49
[12]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):61-64,80
[13]夏正春,梁政平,李黎,等.大跨越输电塔线的断线振动及控制[J].武汉理工大学学报,2008,30(9):84-88
[14]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
[15]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
[16]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
[17]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
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