This article carries out a numerical simulation of a landslide-type long-span roof structure, Harbin Wanda Cultural Industry Complex. The maximum span of the landslide-type roof is 150 m and the minimum span is 90 m, with a minimum height of 40 m and a maximum height of 120 m, and the roof area is divided into three different parts. The large eddy simulation (LES) method is used to simulate and record the wind pressure coefficient of the roof. The distribution law and cause of the mean wind pressure coefficient of the roof are firstly analyzed, and the comparison with the existing wind tunnel test data proves the validity of the numerical simulation. Secondly, a qualitative analysis is made on the distribution of root mean square (RMS) fluctuating coefficients. Subsequently, the non-Gaussian characteristics of the roof are briefly discussed, and the peak factor distribution is calculated. Finally, based on the total wind pressure coefficient, a simple evaluation method for judging favorable and unfavorable wind direction angles is proposed, and only the shape of the roof and wind angle need to be known.

中文翻译：

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滑坡式大跨度屋盖结构风压系数的仿真分析

本文对哈尔滨万达文化产业园区内的滑坡式大跨度屋顶结构进行了数值模拟。滑坡式屋顶的最大跨度为150 m，最小跨度为90 m，最小高度为40 m，最大高度为120 m，并且将屋顶区域分为三个不同的部分。大涡模拟（LES）方法用于模拟和记录屋顶的风压系数。首先分析了屋顶平均风压系数的分布规律和成因，并与现有风洞试验数据进行了比较，证明了数值模拟的有效性。其次，对均方根波动系数的分布进行了定性分析。随后，简要讨论了屋顶的非高斯特性，并计算出峰值因子分布。最后，基于总风压系数，提出了一种简单的评价风向和风向角度的评估方法，只需要知道屋顶的形状和风向角即可。