大跨越输电塔风致振动TMD控制参数研究  

RESEARCH ON TMD CONTROL PARAMETERS FOR WIND-INDUCED VIBRATION OF LONG SPAN TRANSMISSION TOWER

作　　者：赵英能 沈国辉[1] 余亮 李布辉 ZHAO Yingneng;SHEN Guohui;YU Liang;LI Buhui(College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,China;China Energy Engineering Group Jiangsu Power Design Institute Co.,Ltd.,Nanjing 211102,China)

机构地区：[1]浙江大学建筑工程学院,杭州310058 [2]中国能源建设集团江苏省电力设计院有限公司,南京211102

出　　处：《低温建筑技术》2021年第7期70-73,共4页Low Temperature Architecture Technology

摘　　要：以某输电塔为例选取了调谐质量阻尼器(TMD)为减振装置进行参数分析,研究了质量比、频率比和阻尼比三个参数对减振效果的影响。结果表明塔顶位移、加速度减振率与TMD的模态质量比呈现正相关关系;当质量比一定时,塔顶位移、加速度减振率均对频率比较为敏感,频率比在1.00附近时减振率达到最大;减振效果对阻尼比的敏感性较低。Taking a long span transmission tower as an example,parameter analysis using tuned mass damper(TMD)as the vibration mitigation device was carried out.The effects of mass ratio,frequency ratio and damping ratio on the vibration reduction were studied.The results showed that the vibration reduction rate of the displacement and acceleration at top of the tower was correlated with the modal mass ratio of TMD positively.When the mass ratio was constant,the vibration reduction rate of the displacement and acceleration at top of the tower were sensitive to the frequency ratio.The vibration reduction rate would reach maximum value when the frequency ratio was around 1.00.And the damping effect had a low sensitivity to the damping ratio.

关 键 词：大跨越输电塔 风致响应 TMD 振动控制 

分 类 号：TU311.3[建筑科学—结构工程]