Abstract: Based on the analysis of the space and function characteristics of large-scale subway station, starting from the fire load, personnel density, smoke spread characteristics, and the design difficulty of smoke control and exhaust system, taking a large- scale station as an example, the smoke control and exhaust design of station hall floor and platform floor is studied by field smoke heat test, and the test items, evaluation indexes and measurement indexes are analyzed. The results show that for the complex subway station, by optimizing the fire- fighting facilities and smoke control system, scientifically and reasonably dividing the smoke control zones, separating the key areas for fire prevention, and strictly controlling the combustibles in the public areas of the subway station, the development and spread of the fire and smoke can be effectively controlled to ensure the time requirements for the safe evacuation.

Key words: subway station, smoke heat test, smoke control system, smoke control