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 引用本文: 张瑾, 祝贺. 峡谷、垭口地貌下导线流固耦合风偏振动分析[J]. 应用数学和力学, 2020, 41(7): 747-759.
ZHANG Jin, ZHU He. Fluid-Structure Coupling Wind-Induced Vibration Analysis of Transmission Lines Across 2 Close Hills[J]. Applied Mathematics and Mechanics, 2020, 41(7): 747-759. doi: 10.21656/1000-0887.400241
 Citation: ZHANG Jin, ZHU He. Fluid-Structure Coupling Wind-Induced Vibration Analysis of Transmission Lines Across 2 Close Hills[J]. Applied Mathematics and Mechanics, 2020, 41(7): 747-759.

• 中图分类号: TM751

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

• 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.
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##### 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

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