500kV 单回路输电塔塔头风荷载计算模型研究

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振动与冲击 ›› 2009, Vol. 28 ›› Issue (12) : 151-154.

论文

500kV 单回路输电塔塔头风荷载计算模型研究

张庆华;顾明;黄鹏

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Mathematical models study of wind load on superstructures of 500kV single-circuittransmission tower

ZHANG Qinghua; GU Ming; HUANG Peng

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文章历史 +

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。

Abstract

Base on high-frequency-force-balance technique in TJ-1 wind tunnel，the mean and RMS forcecoefficients were obtained in different incoming wind turbulence，and the power-spectrum-density are derivedfrom the extreme along-wind, across-wind and torsional fluctuating wind forces. In light of these results, themathematical models of wind load on superstructures of 500kV single-circuit transmission tower are studied byapplying least-square-method. The results can be used to evaluate wind-induced dynamic response of typicaltransmission towers in frequency domain, and they are also helpful for the code revision.

导出引用

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

ZHANG Qinghua;GU Ming;HUANG Peng. Mathematical models study of wind load on superstructures of 500kV single-circuittransmission tower[J]. Journal of Vibration and Shock, 2009, 28(12): 151-154