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.
出处
《电力建设》
2008年第10期1-4,共4页
Electric Power Construction
基金
国家电网公司科技项目SGKJ[2007]413
关键词
输电塔
橡胶铅芯阻尼器
风振控制
transmission tower
lead-core rubber damper
aeolian vibration control
