Abstract: Taking a subway station in Qingdao as the research object, carried out numerical simulation of fire scene through PyroSim software, set different opening and closing combination modes of platform screen door and ventilation window, and focused on the analysis of temperature, CO mass concentration and visibility. The results showed that the smoke exhaust effect of opening the ventilation window alone was a little better than that of opening the PSD and ventilation window at the same time, and the smoke exhaust effect was the worst when the PSD opened alone.

Key words: platform fire, numerical simulation, platform screen door, ventilation window, smoke flow