摘要
以沈阳某500kv高压输电塔为原型，在满足风洞试验相似理论的基础上，介绍了高压输电塔气弹模型的制作方法。为气弹模型的制作提供了可行的方法。提出了雨荷载的压强计算公式。通过压强缩尺比等于几何缩尺比的关系，首次得到了风洞试验中风雨荷载的缩尺比计算公式。在实际风洞试验时，假设风洞中模拟的雨荷载直径与自然界中实际雨荷载直径相等。得出了风洞中模拟的雨荷载与自然界中实际雨荷载的雨滴密度数是相等的。这个方法简单易行，为风洞试验中风雨荷载的模拟提供了理论依据。
Abstract
Taking a 500kv high-voltage transmission tower in Shenyang as the prototype, they introduce aeroelastic modeling of high-voltage transmission towers,which meets the similarity theory for wind tunnel tests. It provides a feasible method for aeroelastic modeling. A formula for the pressure of rain loads is put forward. Through pressure scale ratio is equal to geometry scale ratio, they get a formula for scale ratio of wind-rain loads first in wind tunnel tests. In the actual wind tunnel tests, they suppose diameter of simulation for rain loads in the wind tunnel is equal to diameter of the actual rain loads. They get number density of simulation for rain loads in the wind tunnel is equal to the number density of the actual rain loads.
This method is simple, and provides a theoretical basis for the wind-rain loads simulation in the wind tunnel tests.
关键词
输电塔气弹模型 /
相似理论 /
风雨荷载 /
缩尺比
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Key words
Aeroelastic model of Transmission tower /
similarity theory /
wind-rain loads /
scale ratio
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唐顺勇;李宏男.
输电塔气弹模型制作及风雨荷载的相似比研究[J]. 振动与冲击, 2011, 30(8): 199-202
TANG Shun-yong;LI Hong-nan .
Aeroelastic modeling of transmission towers and similarity ratio for wind-rain loads [J]. Journal of Vibration and Shock, 2011, 30(8): 199-202
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