吕洪坤,刘孟龙,池伟,汪明军,罗坤,应明良,樊建人
LYU Hongkun,LIU Menglong,CHI Wei,WANG Mingjun,LUO Kun,YING Mingliang,FAN Jianren

• 1:国网浙江省电力有限公司电力科学研究院
• 2:浙江大学能源工程学院
• 3:杭州意能电力技术有限公司

摘要(Abstract)：

以温州某输电线路为研究对象,根据实际参数分别建立了输电塔与塔线耦合体系有限元模型,研究了不同风向作用下结构风致响应特征,对比分析了塔线耦合作用和塔体两侧档距对各风向作用下输电塔风致响应的影响。结果表明:风向影响塔体各主材轴力响应,其中顺风向最下游主材有着最大的轴力,应在设计时重点考虑;塔线耦合作用直接影响了塔体响应的最不利风向,且大档距使得最不利风向更加接近横线向;脉动风对塔体响应的动力放大效应在不同风向条件下有显著区别,而塔线耦合作用加大了风向对风振放大效应的影响;导线抑制了塔体响应的动力响应,并且导线档距越大,脉动风对响应的动力放大效应越弱。
Based on a transmission line in Wenzhou as the research object, finite element models of transmission towers and tower-line coupling system are built based on actual parameter to study the wind-induced response characteristics of transmission tower under in different wind directions, and the effect of transmission line and span length on wind-induced response of tower in different wind directions is analyzed. The results show that wind direction affects the axial force of main materials, and the most downstream main material has the largest axial force, which should be focused on in practical design; the coupling effect of tower-line directly affects the worst wind direction of wind-induced response, and the large span makes the worst wind direction close to transverse line direction; the dynamic amplification effect of turbulent wind on tower response is obviously different in different wind directions, and the coupling effect of tower-line increases wind direction impact on wind-induced vibration amplification effect; the conductor inhibits the dynamic response of the tower body, and the larger the span is, the weaker the dynamic amplification effect of turbulent wind on the response becomes.

关键词(KeyWords)： 有限元分析;塔线体系;风向;档距;风振系数
finite element analysis;tower-line system;wind direction;span;wind-induced vibration coefficient

Abstract:

Keywords:

基金项目(Foundation): 国网浙江省电力有限公司科技项目（5211DS17002U）

作者(Author): 吕洪坤,刘孟龙,池伟,汪明军,罗坤,应明良,樊建人
LYU Hongkun,LIU Menglong,CHI Wei,WANG Mingjun,LUO Kun,YING Mingliang,FAN Jianren

DOI: 10.19585/j.zjdl.202102002

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