Along-line wind loads and distribution patterns of transmission lines

被引：0
|
作者：
Shen G.-H. [1 ]
Bao Y.-N. [1 ]
Guo Y. [2 ]
Song G. [2 ]
Wang Y.-W. [2 ]
机构：
[1] Institute of Structural Engineering, Zhejiang University, Hangzhou
[2] Electric Power Design Institute of Zhejiang Province, Hangzhou
来源：
Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2020年 / 54卷 / 09期
关键词：
Along-line direction; Finite element analysis; Transmission line; Wind loads; Wind tunnel test;
D O I：
10.3785/j.issn.1008-973X.2020.09.001
中图分类号：
学科分类号：
摘要：
Wind tunnel tests and finite element analysis methods were employed to obtain along-line wind loads and distribution patterns of transmission lines. The testing facilities were developed to measure the wind forces of curved transmission lines in a wind tunnel. Along-line wind load proportional coefficients of transmission lines with two typical rise-span ratios were obtained. Three distribution patterns of along-line wind loads of transmission lines were compared through two cases. Finally, suggestions for along-line wind load and distribution patterns of transmission lines were given. Results show that only the Chinese codes specify the wind loads of transmission line in the along-line direction. The along-line wind load proportional coefficients of two transmission lines with rise-span ratios of 4% and 8% are both less than 0.15, and a recommended value of 0.25 in the Chinese codes is conservative. The distribution patterns based on projection heights and body shape coefficients of cables regulated in the Chinese code are almost the same. The distribution pattern based on arc lengths results in larger vertical and horizontal displacements compared with the other two patterns, with an increasing value of about 12%. The along-line wind load proportional coefficient is suggested to be 0.10 for regular or 0.12 for long-span transmission lines. And the distribution pattern of along-line wind loads is suggested to be distributed by projection heights. Copyright ©2020 Journal of Zhejiang University (Engineering Science). All rights reserved.
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页码：1658 / 1665
页数：7
相关论文
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