峡谷、垭口地貌下导线流固耦合风偏振动分析

张瑾; 祝贺

doi:10.21656/1000-0887.400241

峡谷、垭口地貌下导线流固耦合风偏振动分析

doi: 10.21656/1000-0887.400241

张瑾,
祝贺

东北电力大学建筑工程学院, 吉林吉林 132012

基金项目: 吉林省科技发展计划项目（20180201016SF）

详细信息

作者简介:
张瑾（1992—），女，硕士（通讯作者. E-mail: 932041589@qq.com）;祝贺（1978—），男，教授，博士，硕士生导师(E-mail: zhuhe1215@163.com).

中图分类号: TM751
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- 文章访问数: 1052
- HTML全文浏览量: 196
- PDF下载量: 296
- 被引次数: 0
出版历程
- 收稿日期: 2019-08-20
- 修回日期: 2020-05-13
- 刊出日期: 2020-07-01

Fluid-Structure Coupling Wind-Induced Vibration Analysis of Transmission Lines Across 2 Close Hills

ZHANG Jin,
ZHU He

School of Civil Engineering and Architecture, Northeast Electric Power University,Jilin, Jilin 132012, P.R.China

摘要

摘要: 基于双向流固耦合理论计算输电导线在峡谷、垭口地貌下的风偏振动响应，既考虑了山风作用在导线上的荷载，也考虑了导线振动引起表面风压改变及其对流场的影响.首先，与现有文献结果进行对比，验证该方法的可靠性.然后，建立跨越峡谷及垭口输电导线数值风洞模型，分析了峡谷和垭口地貌的平均风速特征以及相应地貌下导线风压分布特征.重点分析了气动力系数和竖向位移在不同地貌下的分布规律.数值计算结果表明：瞬态风场下，垭口的加速效应比峡谷显著，对导线跨中节点的加速比影响更大；导线受不同地貌风场的影响其周围风压分布也并不一致.峡谷地貌下，导线周围所受风压随时间变化分布较稳定；垭口地貌下，导线周围所受风压随时间变化波动剧烈.山体山脚间距越小，导线的升、阻力系数时程曲线的变化幅度会越大，与风压变化有相似特征；垭口地貌下上升气流使导线获得较大上托力和竖向风偏位移.
- 峡谷地形 /
- 垭口地形 /
- 上升气流 /
- 加速效应 /
- 流固耦合
Abstract: Based on the 2D fluid-structure coupling theory, the wind-induced vibration responses of transmission lines across 2 close hills were calculated. Both the load on the wire by the mountain wind and the surface wind pressure change caused by wire vibration with its influence on the flow field were considered. Firstly, the correctness of the method was verified in comparison with the existing literature results. Then, the numerical wind tunnel model for the transmission line across 2 close hills was established. The average wind speed characteristics of the canyon and mountain pass topography as well as the distribution characteristics of the corresponding wind pressure were analyzed. The distributions of aerodynamic coefficients and vertical displacements were analyzed. The numerical results show that, in the transient wind field, the acceleration effect of the mountain pass is more significant than that of the canyon, and the acceleration ratio at the middle of the line is more important. The distribution of wind pressure around the wire is also inconsistent due to the influence of different topographic wind fields. Under the canyon topography, the distribution of wind pressure around the wire is stable with time. Under the mountain pass topography, the wind pressure around the wire fluctuates with time. The smaller the distance between the 2 hills is, the greater the variation range of the resistance coefficient time history curve will be, so is the change of wind pressure. The updraft under the mountain pass topography makes the wire subject to greater lifting force and vertical wind deviation.
- canyon topography /
- mountain pass topography /
- updraft /
- acceleration effect /
- fluid-structure coupling

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参考文献(22)

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峡谷、垭口地貌下导线流固耦合风偏振动分析

doi: 10.21656/1000-0887.400241

作者简介:
张瑾（1992—），女，硕士（通讯作者. E-mail: 932041589@qq.com）;祝贺（1978—），男，教授，博士，硕士生导师(E-mail: zhuhe1215@163.com).

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Fluid-Structure Coupling Wind-Induced Vibration Analysis of Transmission Lines Across 2 Close Hills

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留言板

峡谷、垭口地貌下导线流固耦合风偏振动分析

doi: 10.21656/1000-0887.400241

作者简介: 张瑾（1992—），女，硕士（通讯作者. E-mail: 932041589@qq.com）;祝贺（1978—），男，教授，博士，硕士生导师(E-mail: zhuhe1215@163.com).

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出版历程

Fluid-Structure Coupling Wind-Induced Vibration Analysis of Transmission Lines Across 2 Close Hills

计量

出版历程

目录

作者简介:
张瑾（1992—），女，硕士（通讯作者. E-mail: 932041589@qq.com）;祝贺（1978—），男，教授，博士，硕士生导师(E-mail: zhuhe1215@163.com).