Study of wind effect on a large-span gymnasium based on large eddy simulation and wind tunnel test

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), Apr.2024, Vol.47 No.4: 570-576

DOI: 10.3969/j.issn.1003-5060.2024.04.021

Authors

ZHI Lunhai $ ^{1} $, ZHANG Sheng $ ^{1} $, LIU Maofang $ ^{2} $, MENG Lei $ ^{2} $

(1. School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China; 2. Anhui Jintian Architectural Design Consulting Co., Ltd., Hefei 231600, China)

Abstract and Keywords

Abstract: In this paper, the wind effect of a large-span gymnasium in Tianchang City was simulated by numerical wind tunnel using the turbulence model of large eddy simulation (LES), and the distribution law of the average wind pressure and fluctuating wind pressure and the wind load duration of the gymnasium were obtained. The wind vibration coefficient and equivalent static wind load of the gymnasium roof were calculated by the gust load factor method. The results were compared with those of wind tunnel test. The results show that the wind pressure distribution on the surface of the gymnasium evaluated by numerical simulation is in good agreement with the wind tunnel test results, proving that LES can better reflect the wind pressure distribution on the surface of the large-span gymnasium. The wind vibration coefficient and equivalent static wind load calculated by the two methods are basically the same, indicating that the wind load of large-span spatial structure can be effectively predicted by LES technology. The research results can provide technical reference for the wind resistance design of large-span gymnasium.

Keywords: large-span gymnasium; large eddy simulation(LES); wind tunnel test; wind pressure coefficient; equivalent static wind load

作者信息

郅伦海 $ ^{1} $，张胜 $ ^{1} $，刘毛方 $ ^{2} $，孟磊 $ ^{2} $

(1. 合肥工业大学土木与水利工程学院，安徽合肥 230009；2. 安徽省金田建筑设计咨询有限责任公司，安徽合肥 231600)

摘要和关键词

摘要: 文章运用大涡模拟(large eddy simulation, LES)湍流模型对天长市某大跨度体育场风效应进行数值风洞模拟, 得到体育场平均风压、脉动风压分布规律及风荷载时程, 利用阵风荷载因子法计算体育场屋盖的风振系数及等效静力风荷载, 与风洞实验结果开展对比研究。结果表明, 数值模拟评估的体育场表面风压分布规律与风洞实验结果吻合较好, 能够较好地反映大跨度体育场表面风压分布情况, 2种方法计算得到的风振系数及等效静力风荷载也基本相同, 说明大涡模拟技术能有效预测大跨度空间结构风荷载。研究结果可为大跨度体育场的抗风设计提供技术参考。

关键词: 大跨度体育场；大涡模拟（LES）；风洞实验；风压系数；等效静力风荷载

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)

Navigation