| 基于时域法的输电塔抗风研究 |
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| 引用本文： | 贾瑞庆,杨振伟,代晓光,龚靖.基于时域法的输电塔抗风研究[J].水电能源科学,2009,27(5). |
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| 作者姓名： | 贾瑞庆 杨振伟 代晓光 龚靖 |
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| 作者单位： | 东北电力大学,建筑工程学院,吉林,吉林,132012 |
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| 摘 要： | 基于脉动风的基本特性和Davenport脉动风速谱,提出在时域内采用按时间抽取的快速傅立叶变换技术改进的谐波叠加法对输电塔随机风场进行仿真,以一大跨越输电塔的随机风场为例获得各点的风速时程样本并进行了谱和相关性校验。结果表明,模拟值与目标值吻合、脉动风空间相关特性显著、计算效率大幅提高,验证了该法的有效性和实用性。
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| 关 键 词： | 输电塔 脉动风 谐波叠加法 按时间抽取的快速傅立叶变换 仿真 |
Wind-Resistant Study of Transmission Tower Based on Time-Domain Method |
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| JIA Ruiqing YANG Zhenwei DAI Xiaoguang GONG Jing.Wind-Resistant Study of Transmission Tower Based on Time-Domain Method[J].International Journal Hydroelectric Energy,2009,27(5). |
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| Authors: | JIA Ruiqing YANG Zhenwei DAI Xiaoguang GONG Jing |
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| Affiliation: | School of Civil Engineering;Northeast Dianli University;Jilin 132012;China |
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| Abstract: | Based on basic characteristics of fluctuating wind and Davenport's wind speed spectrum,WAWS method adopting the DIT-FFT technology of the time-domain method was presented,and stochastic wind field of transmission tower was simulated by this method.At last,according to this method,a stochastic wind field of the long-span transmission tower is simulated.Time-history of fluctuating wind speed of different points was obtained,and fluctuating wind speed spectrum and fluctuating wind correlation were checked.In a... |
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| Keywords: | transmission tower fluctuating wind WAWS method DIT-FFT simulation |
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