Abstract: In order to make the smoke exhausting efficiency of the atrium subway station higher, the influence of different air make-up ways was studied. In this paper, the numerical simulation analysis method is used to analyze the influence of different air make-up ways and volumes on the smoke exhausting efficiency under different scenarios as natural air supplement and mechanical air supplement in station hall or platform. The research shows that when the smoke exhausting volume in station hall is certain, the smoke exhausting efficiency is the highest by using the platform mechanical air make-up. And when the air supplement volume is between 30% and 50%, the best smoke exhausting effect can be achieved.

Key words: atrium subway station; air make-up way; air make-up volume; smoke exhausting efficiency; numerical simulation