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| 活塞风效应下地铁站厅公共区域压力分布特性与出入口渗透风量研究 |
| Study on pressure distribution characteristics in metro station hall public zones and infiltration airflow at entrances and exits under piston wind effects |
| 投稿时间：2023-11-12 |
| DOI：10.13259/j.cnki.eri.2025.02.005 |
| 中文关键词: 地铁车站 压力分布 出入口 渗透风量 |
| 英文关键词:metro station pressure distribution entrances and exits infiltration airflow |
| 基金项目:国家自然科学基金面上项目（51878408） |
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| 中文摘要: |
| 以上海市某标准岛式地铁车站为研究对象，建立站厅物理模型，利用计算流体力学（CFD）数值模拟软件，分析了单个行车周期内地铁站厅压力分布特性，探究了基于压力分布特性的机械送、回风调节对出入口渗透风量的影响，以降低空调季车站出入口渗透风冷量损失，为地铁车站环控系统的节能减碳提供理论参考。结果表明，单个行车周期内，典型时刻站厅临近3个出入口区域动压出现明显波动，站厅1.5 m高度处截面动压平均值约为0.50 Pa，而临近出入口区域动压可达到3.82 Pa；此外，保持机械送、回风总量不变，仅将压力波动较强区域的送风风速增加50%，可有效降低出入口渗透风量，约减小了19%。 |
| 英文摘要: |
| Taking a standard island-platform metro station in Shanghai as the research object, a physical model of the concourse level was established. Using computational fluid dynamics simulation, this study analyzes the pressure distribution characteristics during a single train operation cycle and investigates the variation of entrance infiltration airflow with mechanical air supply/return adjustment based on pressure distribution, so as to reduce cooling load loss caused by infiltration at station entrances and exits during air-conditioning seasons and provide theoretical support for energy-saving and carbon reduction in metro station environmental control systems. Results show that significant dynamic pressure fluctuations occur near three entrances and exits during a single operation cycle, with an average dynamic pressure of 0.50 Pa at 1.5 m height in the concourse, while reaching 3.82 Pa near entrances and exits. While the total air supply volume is maintained constant, increasing the air supply velocity by 50% only in high-pressure-fluctuation areas can effectively reduce infiltration airflow by approximately 19%. |
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