某电厂自然通风冷却塔塔群风载荷研究

WIND LOADS ON MULTI NATURAL DRAFT COOLING TOWERS IN A POWER PLANT

  • 摘要: 自然通风冷却塔属高耸的薄壳结构,在风载荷作用下冷却塔顶部的位移可超过壁厚的数倍,对风载荷极为敏感,特别是在塔群情况下,风速、风压分布和塔间气流十分复杂. 根据某电厂不规则塔群风洞试验结果,提出塔群条件下自然通风冷却塔设计风荷载取值的几点意见,可供工程参考.

     

    Abstract: Natural draft cooling tower is a high-rise thinshell structure. The displacement in the top of the cooling tower can betens of centimeters under wind loads, several times of the wallthickness. Cooling tower is very sensitive to wind loads, especially inmulti-towers conditions, where the wind velocity, wind pressure distribution andairflow among towers are quite complex. On the basis of the experimentresults on irregular multi-towers, this paper put forward some proposalsabout determiningwind loads of natural draft cooling tower in multi- towers conditions.

     

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