| 输电塔风振响应研究 |
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| 引用本文： | 邓洪洲,张永飞,陈强,吴昀. 输电塔风振响应研究[J]. 特种结构, 2008, 25(2): 9-13 |
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| 作者姓名： | 邓洪洲 张永飞 陈强 吴昀 |
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| 作者单位： | 1. 同济大学,建筑工程系,上海,200092
2. 福建省电力勘测设计院,福州,350003 |
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| 摘 要： | 本文基于Matlab采用Davenport风速谱对大气边界层的脉动风速进行了模拟,并通过一具体的工程实例,采用Ansys分析研究了不同风场湍流度和结构阻尼比对输电铁塔风振响应的影响,同时计算了结构的风振系数。计算结果表明,风场湍流度和结构阻尼比对输电塔的风振响应有不同程度的影响,计算时应考虑两者的综合效应;按我国规范计算的结构风振系数小于美日规范。
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| 关 键 词： | 输电塔 风振响应 风模拟 阻尼比 湍流度 |
Study For Wind - induced Vibration Response of Transmission Towers |
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| Deng Hongzhou Zhang Yongfei ChenQiang. Study For Wind - induced Vibration Response of Transmission Towers[J]. Special Structures, 2008, 25(2): 9-13 |
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| Authors: | Deng Hongzhou Zhang Yongfei ChenQiang |
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| Affiliation: | Deng Hongzhou Zhang Yongfei ChenQiang Department of Building Engineering,Tongji University,Shanghai 200092,Fujian Electronic Power Survey and Design Institute,Fuzhou 350003 |
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| Abstract: | In this paper,by adapting Davenport Spectrum for horizontally fluctuating wind,wind velocity time history on structure was simulated by Matlab.Then,based on Ansys software,a specific engineering example was ana- lyzed and the different dynamic response under different turbulence intensity and damping ratio was studied.Also,the wind-induced vibration coefficient was calculated.The results show that the turbulence intensity and damping ratio has a great effect on transmission tower's wind-induced vibration response,so both of them should be considered during calculation.The wind-induced vibration coefficient calculated according with China code is less than those with America and Japan code. |
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| Keywords: | Transmission towers Wind-induced vibration response Wind simulation Damping ratio Turbulence intensity |
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