Effectiveness analysis of anti-galloping of spacer for catenary additional wires in strong wind section of high-speed railways

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-05-22 DOI:10.24425/aee.2024.149929

Youpeng Zhang, Yahui Zhang, Shanpeng Zhao, Qiang Feng, Xiaotong Yao, Ni Yang

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引用次数: 0

Abstract

To effectively suppress the violent galloping of the catenary additional wires in the strong wind section of high-speed railways, the anti-galloping effectiveness and anti-galloping mechanism of the spacer installed on the catenary additional wires are studied. Firstly, the finite element model of the additional wires of the catenary before and after the installation of the spacer is established. Secondly, the random wind field at the additional wires is simulated by the harmonic synthesis method (WAWS). Finally, the galloping response of the additional wires before and after the installation of the spacer is studied by using the finite element software. The results show that the installation of a single spacer at the midpoint of the span can reduce the vertical amplitude of the AF (Additional Feeder) and the PW (Protection Wire) by more than 39.80% and 41.51%, respectively, and the lateral amplitude decreases by more than 16.55% and 38.30%, respectively. The tension of the AF is greatly reduced, while the tension of the PW is slightly increased, so that the galloping of the AF and the PW tends to be synchronized. With the increase in the number of spacers installed, the anti-galloping effect continues to increase. At the same time, the anti-galloping mechanism of the spacer rod to suppress the vibration of the additional wires through the traction effect is clarified, and the effectiveness of the spacer rod in the anti-galloping of the additional wires of the catenary is proved.

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高速铁路强风区段导线附加线间隔防空鼓效果分析

为有效抑制高速铁路强风区段中悬索桥附加导线的剧烈飞驰，研究了在悬索桥附加导线上安装隔板的防飞驰效果和防飞驰机理。首先，建立了安装隔板前后的导线附加导线的有限元模型。其次，采用谐波合成法（WAWS）模拟附加导线上的随机风场。最后，使用有限元软件研究了安装间隔器前后附加导线的奔腾响应。结果表明，在跨中点安装单个撑杆可使 AF（附加馈线）和 PW（保护线）的垂直振幅分别减小 39.80% 和 41.51% 以上，横向振幅分别减小 16.55% 和 38.30% 以上。AF 的张力大大降低，而 PW 的张力略有增加，因此 AF 和 PW 的奔腾趋于同步。随着垫片安装数量的增加，防跑偏效果继续增强。同时，阐明了间隔杆通过牵引效应抑制附加导线振动的防绞合机理，并证明了间隔杆对导线附加导线防绞合的有效性。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.