橡胶铅芯阻尼器控制下输电塔风振响应研究
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摘要
以云广±800 kV特高压直流输电工程为研究背景,结合工程的特点,研究了橡胶铅芯阻尼器控制下输电塔的风振响应。将橡胶铅芯阻尼器平行于角钢并联安装于塔架上,对其具体构造进行了初步设计。采用时程分析方法,针对4种阻尼器布置方案计算了单塔和输电塔-线体系的风振响应。结果表明:采取塔头横担以上部分边缘杆件加阻尼器的措施减振效果最好。动风作用下塔-线模型的减振效果略好于单塔模型,在计算输电塔风振响应时,应当采用输电塔-线体系的模型。
Using Yun-Guang ±800 kV UHV DC transmission project as background and combining its engineering characteristics,the aeolian vibration response of transmission tower controlled by lead-core rubber dampers is studied.Shunted dampers are installed in parallel to angle steel of the tower.Preliminary design of damper structure is performed.Using time-history analysis,both tower and coupled tower-conductor system aeolian vibration responses using 4 damper arrangements are calculated.Results show that the most effective way to reduce vibration is to add dampers on the edge members above cross arw.Because vibration reduction results of tower-conductor model is slightly better than that of single tower model under dynamic wind condition,tower-conductor model should be used when calculating tower aeolian vibration response.
Using Yun-Guang ±800 kV UHV DC transmission project as background and combining its engineering characteristics,the aeolian vibration response of transmission tower controlled by lead-core rubber dampers is studied.Shunted dampers are installed in parallel to angle steel of the tower.Preliminary design of damper structure is performed.Using time-history analysis,both tower and coupled tower-conductor system aeolian vibration responses using 4 damper arrangements are calculated.Results show that the most effective way to reduce vibration is to add dampers on the edge members above cross arw.Because vibration reduction results of tower-conductor model is slightly better than that of single tower model under dynamic wind condition,tower-conductor model should be used when calculating tower aeolian vibration response.
引文
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[4]中华人民共和国国家标准,《建筑结构荷载规范》(GB50009-2001)[S].
[5]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.
[6]钟寅亥,李黎,江宜诚.橡胶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.
[7]江宜诚,钟寅亥,樊剑,李黎.橡胶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,2003,4(18):34-36.
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[10]周云,徐赵东,邓雪松,铅橡胶性阻尼器的力学模型[J],地震工程与工程振动,2000,20(1):120-123.
[2]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.
[3]中华人民共和国电力行业标准,《架空送电线路杆塔结构设计技术规定》(DL/T5154—2002)[S].
[4]中华人民共和国国家标准,《建筑结构荷载规范》(GB50009-2001)[S].
[5]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.
[6]钟寅亥,李黎,江宜诚.橡胶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.
[7]江宜诚,钟寅亥,樊剑,李黎.橡胶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,2003,4(18):34-36.
[8]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.
[9]周云,邓雪松,徐赵东,铅橡胶性阻尼器性能试验研究[J],地震工程与工程振动,2001,21(1):139-142.
[10]周云,徐赵东,邓雪松,铅橡胶性阻尼器的力学模型[J],地震工程与工程振动,2000,20(1):120-123.
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