| 500kV 单回路输电塔塔头风荷载计算模型研究 |
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| 引用本文： | 张庆华,顾明,黄鹏.500kV 单回路输电塔塔头风荷载计算模型研究[J].振动与冲击,2009,28(12):151-154. |
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| 作者姓名： | 张庆华 顾明 黄鹏 |
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| 作者单位： | 同济大学,土木工程防灾国家重点实验室,上海,200092 |
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| 基金项目： | 国家自然科学创新研究群体科学基金，国家自然科学基金重点项目 |
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| 摘 要： | 根据高频底座天平测力风洞试验，得到典型500kV 单回路输电塔塔头结构风力系数的平均值和根方差值，给出了极值风力下塔头结构顺风向、横风向基底剪力和基底扭矩的功率谱。在此基础上，采用最小二乘法拟合，建立了输电塔塔头结构风荷载的计算模型，其结果不仅可以用于格构式输电塔频域计算，还可以为相关规范的修订提供参考。
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| 关 键 词： | 输电塔 风荷载 功率谱 计算模型 |
| 收稿时间： | 2009-7-29 |
| 修稿时间： | 2009-8-11 |
Mathematical models study of wind load on superstructures of 500kV single-circuit transmission tower |
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| ZHANG Qing-hua,GU Ming,HUANG Peng.Mathematical models study of wind load on superstructures of 500kV single-circuit transmission tower[J].Journal of Vibration and Shock,2009,28(12):151-154. |
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| Authors: | ZHANG Qing-hua GU Ming HUANG Peng |
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| Abstract: | Base on high-frequency-force-balance technique in TJ-1 wind tunnel,the mean and RMS of force coefficients were obtained in different incoming wind turbulences,and the power-spectrum-density were derived from the extreme forces of along-wind,across-wind and torsional fluctuating wind. In the light of these results,the mathematical models of wind load on superstructures of 500kV single-circuit transmission tower were studied by applying least-square-method. The results can be used to evaluate the wind-induced dynamic responses of typical transmission towers in frequency domain,and are also helpful for the code revision. |
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| Keywords: | transmission tower wind force power spectrum mathematical model |
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