| 500kV同塔四回路大跨越塔风振响应分析 |
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| 引用本文： | 何天胜,王振华,何运祥.500kV同塔四回路大跨越塔风振响应分析[J].电力勘测设计,2012(2):66-70. |
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| 作者姓名： | 何天胜 王振华 何运祥 |
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| 作者单位： | 广东省电力设计研究院,广东广州,510663 |
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| 摘 要： | 以西江500kV同塔四回路大跨越塔工程为例,介绍了大跨越塔的结构设计。采用Davenport风速功率谱函数,模拟了大跨越塔线体系的风速时程曲线。运用人工模拟的风速时程曲线,采用直接积分Newmark法计算了大跨越塔线体系的风振响应,分析了大跨越塔线体系的风振响应,给出了风振系数建议值,并将风振系数理论计算值与风洞试验结果进行了比较。计算结果可为同类大跨越塔工程作为参考。
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| 关 键 词： | 同塔四回路 大跨越塔线体系 风速时程模拟 时程分析 风振系数 |
Analysis of Wind-induced Vibration of 500kV Four Circuits on One Large-span Transmission Tower |
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| HE Tian-sheng
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WANG Zhen-hua
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HE Yun-xiang.Analysis of Wind-induced Vibration of 500kV Four Circuits on One Large-span Transmission Tower[J].Electric Power Survey & Design,2012(2):66-70. |
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| Authors: | HE Tian-sheng WANG Zhen-hua HE Yun-xiang |
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| Affiliation: | (Guangdong Electric Power Design Institute, Guangzhou 510663, China) |
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| Abstract: | Taking the project of Xijiang 500kV four circuits on one large-span transmission tower as an example,the structural design of the large-span transmission tower was introduced.Davenport wind speed spectral density function was used to simulate wind speed of the large-span transmission tower-line system.Using direct integration Newmark method,numerical simulated wind speed time series was employed to investigate the wind-induced vibration of the large-span transmission tower-line system.The recommended value of wind vibration coefficient was proposed and compared with its value of wind tunnel experiment.The results can be used as a reference for similar large-span transmission tower. |
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| Keywords: | four circuits on one tower large-span transmission tower-line system wind speed time-history simulation time-history analysis wind-induced vibration factor |
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