Design and simulation analysis of smoke exhaust system in multi-storey underground railway station with atrium vault

 Presents the internal structural characteristics of a multi-storey underground railway station with atrium vault. On the premise of meeting the fire evacuation environmental control standards and improving the smoke exhaust efficiency, simplifies the station smoke exhaust system through calculation and analysis. Simulates and analyses the smoke exhaust effect of the simplified smoke exhaust system, and the results show that the two floors connected by the atrium are used as a space for smoke exhaust design, which can meet the smoke control requirements within six minutes of evacuation time.