Dynamic amplification effects caused by tower‐group interference is the most critical causes of wind‐induced destructions of super‐large cooling tower (SLCT), and four‐tower combinations are the most common tower‐group combining form. However, the dynamic amplification effects of SLCT of different four‐tower arrangements have not been studied systematically so far. The highest (220 m) SLCT in the world was taken as the target to conduct SLCT wind pressure measurement under 320 wind tunnel test conditions. Firstly, the stability performance under the design wind loads was analyzed. Then, the dynamic time‐history analysis was carried out, and the distribution characteristics of peak factors and values of extreme response were discussed. Furthermore, with a new concept parameter “tower‐group wind vibration coefficient” for the wind‐resistance design of SLCT, the distribution laws of two‐dimensional (2D), one‐dimensional (1D), and global tower‐group wind vibration coefficient were revealed under different four‐tower interferences. On these bases, we recommend the design parameters for wind‐resistance study of SLCT and the priority of four‐tower combination forms. The study showed that the dynamic effects of SLCT under different four‐tower arrangements were significantly different from each other and the tower‐group wind vibration coefficients proposed in this paper can reflect the interference effects of tower‐group more efficient than traditional design method. The results may become a useful database for the wind‐resistance design of SLCT and provide clues for the optimization of four‐tower arrangements in power plants.

中文翻译：

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考虑四塔干扰的超大型冷却塔风动力特性比较

塔群干扰引起的动态放大效应是超大型冷却塔（SLCT）风致破坏的最关键原因，而四塔组合是最常见的塔群组合形式。但是，到目前为止，尚未对不同的四塔式装置的SLCT的动态放大效果进行系统研究。在320个风洞测试条件下，以世界上最高的（220 m）SLCT作为目标进行SLCT风压测量。首先，分析了设计风荷载下的稳定性能。然后，进行了动态时程分析，并讨论了峰值因子的分布特征和极限响应值。此外，通过SLCT抗风设计的新概念参数“塔群风振系数”，揭示了二维（2D），一维（1D）和整体塔群风振系数的分布规律。在不同的四塔干扰下。在此基础上，我们建议用于SLCT抗风研究的设计参数以及四塔组合形式的优先级。研究表明，在不同的四塔布置下，SLCT的动力效应存在显着差异，并且本文提出的塔群风振动系数比传统设计方法更能有效地反映塔群的干扰效应。