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Study on Probabilistic Properties of Fluctuating Wind Pressure Distribution of Low-Rise Buildings Affected by Slope Gradient in Mountain Forms

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This study presents the results of experimental observation of wind pressure on low-rise buildings in three typical mountain forms through wind tunnel experiments. This research focuses on the distribution change… Click to show full abstract

This study presents the results of experimental observation of wind pressure on low-rise buildings in three typical mountain forms through wind tunnel experiments. This research focuses on the distribution change in fluctuating wind pressure coefficients with slope gradient. The variation of power spectra and wind pressure’s probability distribution at representative measuring points with the slope gradient were also included. No obvious variation trend for the fluctuating wind pressure coefficient was identified on the windward side. When the slope gradient was 90°, there was just a slight change in distribution or value of the fluctuating wind pressure coefficient on the left. However, the coefficient on the leeward decreased and then increased, while on the roof, it gradually decreased. Furthermore, the experiments showed that the fluctuating wind pressure’s distribution in the middle of windward eaves and at the leeward eaves was significantly affected by the slope gradient. At 0° wind angle, the wind pressure probability density distribution gradually changes from symmetric to asymmetric at the measuring points of windward eaves and side centers when the slope gradient increases, which shows that the wind pressure probability density distribution changes from non-Gaussian to Gaussian.

Keywords: fluctuating wind; pressure; wind pressure; distribution; slope gradient

Journal Title: Symmetry
Year Published: 2022

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