| 基于谐波合成法的输电塔线体系风致响应分析 |
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| 引用本文： | 甘凤林,杨振伟,代晓光. 基于谐波合成法的输电塔线体系风致响应分析[J]. 电网技术, 2009, 0(18) |
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| 作者姓名： | 甘凤林 杨振伟 代晓光 |
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| 作者单位： | 东北电力大学建筑工程学院; |
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| 摘 要： | 输电塔线体系由于具有大跨、高柔的特性,在风荷载的作用下容易产生较大的振动,对风荷载的作用比较敏感,因此风荷载是输电塔线体系极其重要的设计荷载,起着决定性作用。文章基于脉动风的基本特性和Davenport风速谱,提出了时域法中基于按时间抽取的快速傅里叶变换技术改进的谐波合成法,然后对输电塔线体系的脉动风场进行了仿真,结果表明,仿真的脉动风速与实际风速一致,仿真的风场符合脉动风的空间相关性规律,计算效率得到了提高。
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| 关 键 词： | 输电塔线体系 脉动风 风致响应 谐波合成 |
Analysis on Wind-Induced Dynamic Response of Transmission Tower-Line System Based on Weighted Amplitude Wave Superposition |
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| GAN Feng-lin,YANG Zhen-wei,DAI Xiao-guang. Analysis on Wind-Induced Dynamic Response of Transmission Tower-Line System Based on Weighted Amplitude Wave Superposition[J]. Power System Technology, 2009, 0(18) |
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| Authors: | GAN Feng-lin YANG Zhen-wei DAI Xiao-guang |
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| Affiliation: | GAN Feng-lin,YANG Zhen-wei,DAI Xiao-guang (School of Civil Engineering,Northeast Dianli University,Jilin 132012,Jilin Province,China) |
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| Abstract: | Due to its features of large cross span,high height and flexibility,transmission tower-line system is sensitive to wind load and easy to occur visible vibration under wind load. For this reason,wind load is a very important design load playing a decisive role for such a structure as transmission tower-line systems and so on. Based on the basic features of fluctuating wind and Davenport wind speed spectrum,in this paper a method to simulate the fluctuating wind field of transmission tower-line system by weig... |
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| Keywords: | transmission tower-line system fluctuating wind wind-induced response weighted amplitude wave superposition (WAWS) |
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