典型形式大跨度屋盖风雪漂移的数值模拟

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (18) : 36-42.

论文

典型形式大跨度屋盖风雪漂移的数值模拟

孙晓颖1,2 洪财滨2,3武岳1,2

作者信息 +

Numerical simulation of snow drifting on typical form of long-span roofs

Sun Xiaoying1,2,Hong caibin2,3,Wu Yue1,2

Author information +

文章历史 +

摘要

近年来，因积雪的不均匀分布造成大跨度屋盖坍塌的事故已屡见不鲜，这主要是由于屋盖上的积雪在风力作用下发生复杂的风雪运动，从而造成大跨度屋盖表面积雪的不均匀分布，正确预测大跨度屋盖上的积雪分布有着非常重要的意义。本文基于Mixture多相流模型和模型对几种典型形式大跨度屋盖的风雪漂移进行了数值模拟，探讨了不同形式屋盖的积雪分布规律，研究了风向角、矢跨比对屋面积雪分布的影响，并将平屋盖和拱形屋盖数值模拟结果与规范进行了对比分析。

Abstract

Flow around the roof can cause the complex movement of the snow on the long-span roof, which results in uneven distribution of the snow. In recent years, the collapse of the long-span roof caused by uneven distribution of snow has been common, so it is very important to predict the distribution of snow on the long-span roof correctly. In this paper, based on the Mixture model and turbulent model, the numerical simulation of snow drifting has been performed on typical form of long-span roofs. The characteristics of snow distribution are discussed considering some parameters such as wind direction and rise-span ratio. Then the simulation result is compared with Chinese Code for the flat roof and cylinder roof.

导出引用

孙晓颖;洪财滨;武岳;. 典型形式大跨度屋盖风雪漂移的数值模拟[J]. 振动与冲击, 2014, 33(18): 36-42

Sun Xiaoying;Hong caibin;Wu Yue;. Numerical simulation of snow drifting on typical form of long-span roofs[J]. Journal of Vibration and Shock, 2014, 33(18): 36-42