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

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中图分类号：U231；TU96 文献标志码：A

Abstract： 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 0.50Pa at 1.5m 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%

Keywords： metro station; pressure distribution; entrances and exits; infiltration airflow

随着我国地铁建设的飞速发展，地铁车站环控系统的能耗问题日益凸显[1。（剩余6931字）