Numerical simulation study of wind-induced snow drift for large-span roofs

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), May.2026, Vol.49 No.5: 694-702

DOI: 10.3969/j.issn.1003-5060.2026.05.017

Authors

ZHI Linhai $ ^{1} $, YANG Liuyang $ ^{1} $, LI Along $ ^{1} $, HUANG Zhiqiang $ ^{2} $, SHI Jun $ ^{2} $, LIU Hai $ ^{2} $

(1. School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China; 2. China Construction Third Bureau First Engineering Co., Ltd., Wuhan 430040, China)

Abstract and Keywords

Abstract: Based on the two-phase flow theory of the Euler-Euler method, this paper combines the mixture multiphase flow model and the $ k-k_{L}-\omega $ turbulence model to conduct a numerical simulation study on the load distribution of a large-span roof in Lanzhou City under wind-induced snow drift. The snow redistribution characteristics on the roof under different wind angles were analyzed, and the variation of snow distribution coefficients across different roof zones under various wind directions was evaluated. Additionally, the wind speed distribution in the area prone to snow accumulation was systematically studied. The results indicate that the snow distribution characteristics of the roof will change significantly under the influence of wind-induced snow drift, exhibiting a non-uniform distribution. The maximum value of the snow distribution coefficients is usually located in the region with a large height difference of the roof. Furthermore, the wind-induced snow drift is more significantly affected by the wind speed, and snow erosion is prominent in regions with high wind speeds, while snow deposition is more likely to occur in regions with low wind speeds. The findings are highly significant for the design and maintenance of wind-driven snow distribution characteristics of large-span structures, contributing to the enhancement of building safety and stability.

Keywords: large-span roofs; wind-induced snow drift; two-phase flow theory; numerical simulation; snow distribution

作者信息

郅伦海 $ ^{1} $，杨刘洋 $ ^{1} $，李阿龙 $ ^{1} $，黄志强 $ ^{2} $，石军 $ ^{2} $，刘海 $ ^{2} $

(1. 合肥工业大学土木与水利工程学院，安徽合肥 230009；2. 中建三局第一建设工程有限责任公司，湖北武汉 430040)

摘要和关键词

摘要: 文章基于 Euler-Euler 方法的两相流理论,结合 Mixture 多相流模型和 $ k-k_{L}-\omega $ 湍流模型,对兰州市某大跨度屋盖风雪漂移运动下的荷载分布形式开展了数值模拟研究。分析不同风向角下屋盖上的积雪重分布规律,评估了屋盖各分区在不同风向角下积雪分布系数的变化规律,并系统研究了易产生积雪堆积区域的风速分布情况。结果表明:在风雪漂移影响下,屋盖积雪分布特征会发生明显改变,呈现出非均匀分布的特点;积雪分布系数的最大值通常位于屋盖高度差较大的区域;风雪漂移受风速影响较为明显,风速较大的区域积雪侵蚀现象明显,而风速较小的区域则容易出现积雪沉积。该研究结果对于大跨度结构风致雪灾分布特征的设计和维护具有重要意义,有助于提高建筑的安全性和稳定性。

关键词: 大跨度屋盖；风致雪漂移；两相流理论；数值模拟；积雪分布

Funding

国家自然科学基金资助项目（51978230；52278495）；安徽省自然科学基金杰出青年基金资助项目（2108085J29）

合肥工业大学学报(自然科学版)

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