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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

42卷

期数:

2025年04期

页码:

22-30

栏目:

建筑结构

出版日期:

2025-07-10

文章信息/Info

Title:

Numerical simulation study of wind load in large-span natatorium structure

文章编号:

1673-2049(2025)04-0022-09

作者:

孙香红,史忠冉,纪颖颖,陈涛

(长安大学 建筑工程学院,陕西 西安 710061)

Author(s):

SUN Xianghong, SHI Zhongran, JI Yingying, CHEN Tao

(School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China)

关键词:

大跨度结构;  风荷载;  数值模拟;  风向角;  平均风压系数

Keywords:

large-span structure;  wind load;  numerical simulation;  wind direction angle;  average wind pressure coefficient

分类号:

TU312

DOI:

10.19815/j.jace.2023.07034

文献标志码:

A

摘要:

为了研究体型复杂的大跨度游泳馆结构在风荷载作用下的风压变化规律,以西安某大跨度游泳馆结构为研究对象,采用风荷载数值模拟方法,对该游泳馆在不同湍流模型、不同风向角工况下的屋盖表面平均风压系数变化展开研究,分析湍流模型和风向角对游泳馆屋盖结构的影响; 然后考虑不同区建筑物对该游泳馆平均风压系数的影响,分析得到其影响规律。结果表明:不同湍流模型对游泳馆屋盖的平均风压系数影响较小; 在90°和270°风向角下,游泳馆整体模型的屋盖表面平均风压系数变化梯度平缓,平均风压系数基本维持在-0.5左右,而在其他风向角下,平均风压系数变化梯度明显; 游泳馆屋檐凹进去的部分平均风压系数很小,甚至出现正风压的情况,而凸出来的弧形部分负风压较大; 来流由低往高走时,前方较低矮的B区和C区对A区形成缓坡结构,有效抵挡了部分气流,从而降低了A区的风压,使得平均风压系数变化梯度相对平缓。

Abstract:

In order to investigate the wind pressure variation patterns of complex-shaped large-span natatorium structure under wind load, a large-span natatorium structure in Xi'an was taken as the research object. By employing numerical simulation of wind load, the changes of average wind pressure coefficient on the roof surface of natatorium structure under different turbulence models and wind direction angles were studied. The influence of turbulence models and wind direction angles on the roof structure of natatorium was analyzed. Subsequently, the impact of different zoning buildings on the average wind pressure coefficient of natatorium structure was considered to derive the influencing patterns. The results show that different turbulence models have a negligible effect on the average wind pressure coefficient of natatorium roof. The average wind pressure coefficient on the roof surface of entire natatorium model exhibits a gentle variation gradient at wind direction angles of 90° and 270°, and maintaining a value close to -0.5. The average wind pressure coefficient shows a more pronounced variation gradient at other wind direction angles. The average wind pressure coefficient of the concave part of natatorium eaves is very small, and even positive wind pressure occurs, while the convex arc-shaped part has a larger negative wind pressure. When the incoming flow moves from low to high, the lower B and C zones ahead form a gentle slope structure with respect to A zone, effectively resisting some of the airflow and reducing the wind pressure in A zone, resulting in a relatively smooth gradient of the average wind pressure coefficient.

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备注/Memo

备注/Memo:

收稿日期:2023-07-09
基金项目:国家自然科学基金项目(52078399)
作者简介:孙香红(1974-),女,工学博士,副教授,E-mail:sunxh@chd.edu.cn。
Author resume: SUN Xianghong(1974-), female, PhD, associate professor, E-mail: sunxh@chd.edu.cn.

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更新日期/Last Update: 2025-07-10