ABSTRACT Compared with the mechanical ventilation, natural ventilation is an effective, low cost and low maintenance way for smoke control in many buildings. In this paper, a new method of setting shafts was proposed to realise the natural ventilation in a common subway station. The theoretical analysis and the numerical method were used to assist the design strategy. Results show that when setting shafts for the hall layer, the total ventilation area and the height of the shafts are the key factors influencing the smoke control efficiency. The multistage shafts can be used for smoke control in the platform layer and the strong stack effect formed in this layer can bring many benefits on improving the smoke control efficiency. To strengthen the stack effect and form the optimal smoke flow paths, the most effective ways are increasing the smoke screen height and closing all the platform screen doors.

中文翻译：

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地铁普通车站火灾排烟自然通风新方法

摘要 与机械通风相比，自然通风在许多建筑物中是一种有效、低成本和低维护的烟雾控制方式。本文提出了一种设置竖井的新方法，以实现普通地铁车站的自然通风。理论分析和数值方法用于辅助设计策略。结果表明，在大厅层设置竖井时，总通风面积和竖井高度是影响排烟效率的关键因素。平台层可采用多级竖井进行排烟，该层形成的强烈烟囱效应对提高排烟效率带来诸多好处。加强烟囱效应，形成最佳烟气流动路径，