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本文通过模型风洞实验,对椭园形双曲抛物面鞍形壳体屋面的风压分布系数进行了研究。实验是在模拟大气边界层风洞中进行的。根据不同风向作用下屋面风压的实测分布规律,给出了最大风压系数和整个屋面的平均风压系数。在所研究的矢跨比范围内,最大风压系数C_(pm)=-206q,最大平均风压系数(绝对值)(?)_p=-0.82q(q为速压)。实验结果表明,风向对屋面风压分布起着最为重要的作用。
In this paper, the wind pressure distribution coefficient of the elliptical parabolic hyperbolic parabolic saddle shell roof is studied through the model wind tunnel experiment. Experiments were conducted in a simulated atmospheric boundary layer wind tunnel. According to the measured distribution of wind pressure under different wind direction, the maximum wind pressure coefficient and the average wind pressure coefficient of the whole roof are given. In the range of the span ratio studied, the maximum wind pressure coefficient C_(pm) = -206q, and the maximum average wind pressure coefficient (absolute value) (?)_p = -0.82q (q is the speed pressure). The experimental results show that the wind direction plays an important role in the roof wind pressure distribution.