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高层建筑外廊行人风环境研究
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Abstract:
为了研究高层建筑塔楼外廊区域的行人风环境，进行了一系列的数值模拟研究。研究结果表明，当来流风向与建筑面垂直时，外廊行人区域整体风速偏小，随着来流风向与建筑立面夹角的增大，塔楼外廊行人高度处风速逐渐增大，最大风速通常出现在外廊的拐角区域。随着外廊宽度增加，行人高度处的风速有所增大，随着外廊围栏高度的增加，外廊行人高度处的风速逐渐减小。最终考虑不同建筑尺寸，提出了塔楼外廊最大风速加速比的经验公式，可为高层建筑外廊的行人风环境评估提供参考。
In order to study the pedestrian wind environment in the out-corridor of high-rise buildings, a series of CFD simulations were carried out. The results show that when the wind direction is perpendicular to the building surface, the wind speed in the pedestrian area of the outer corridor is relatively small, and gradually increases with the increase of wind direction angle. The maximum wind speed usually occurs in the corner area of the outer corridor. Meanwhile, the wind speed increases with the width of the corridor increases, and decreases with the height of the corridor fence. Considering different building sizes, an empirical formula for the maximum speed-up ratio of the out-corridor was proposed, which can provide reference for the assessment of pedestrian wind environment.
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