《山地运动技术楼极端工况下屋盖表面风荷载数值模拟研究》
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作者单位:

1.中国矿业大学(北京));2.河海大学

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中图分类号:

P425.6+5

基金项目:

国家重点研发计划“科技冬奥”重点专项(2018YFF0300204)


Numerical Simulation of Wind Load on Roof of Mountain Sports Building under Extreme Conditions
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Affiliation:

1.CHINA UNIVERSITY OF MINING AND TECHNOLOGYV-BEIJING;2.College of Water Conservancy and Hydropower Engineering

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    摘要:

    为研究极端环境下风对山地运动技术楼屋盖的影响,以北京2022年冬奥会冬季两项中心技术楼为研究对象,通过CFD流体力学软件,采用SST 湍流模型进行数值模拟分析。首先分析看台对屋盖上下表面所受风压的影响,发现看台的设置会减弱屋盖下表面所受的正压,增大上表面所受的负压。然后对有看台技术楼在不同山体环绕工况下屋盖上下表面所受的风荷载进行分析,发现其在屋盖上表面边缘处由于存在流动分离现象,使其所受的负压明显较大。由气动干扰分析可知,三面环山对屋盖上表面所受的风压有显著的减弱作用,两面环山会增大屋盖上表面所受的风荷载。最后,根据研究结果提出了相关建议,为山区建筑物抗风设计和选址提供了理论参考。

    Abstract:

    In order to study the influence of wind on the roof of mountain sports technical building under extreme environment, taking the technical building of Beijing 2022 Winter Olympic Winter Games Center as the research background, based on CFD fluid dynamics software, SST Turbulence model was used for numerical simulation analysis. Firstly, the influence of grandstand on the wind pressure on the upper and lower surfaces of the roof is analyzed. It is found that the setting of the bleachers will weaken the positive pressure on the lower surface of the roof and increase the negative pressure on the upper surface. Then, the wind load on the upper and lower surfaces of the roof of the technical building with stands under different mountain surrounding conditions is analyzed. It is found that the negative pressure on the upper surface edge of the roof is significantly greater due to the flow separation phenomenon. From the analysis of aerodynamic interference, it can be seen that the wind pressure on the upper surface of the roof is significantly reduced by the three side ring mountains, and the wind load on the upper surface of the roof will be increased by the two sides of the mountain ring. Finally, according to the research results, some suggestions are put forward, which provide a theoretical reference for wind resistant design and site selection of buildings in mountainous areas.

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张诜,刘波. 《山地运动技术楼极端工况下屋盖表面风荷载数值模拟研究》[J]. 科学技术与工程, , ():

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  • 收稿日期:2020-07-31
  • 最后修改日期:2020-11-24
  • 录用日期:2020-12-20
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