【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。更多还原

【Abstract】 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.更多还原