Design Strategy of Ventilation and Air Conditioning System in Public Area of Semi-underground Hub Metro Station

Taking Shuangliu West Station, the interchange semi-underground hub metro station of three lines (Line 3, Line 10, Line 17) of Chengdu Metro, as an example, targeting the transfer format of three different train formation (6B, 6A, 8A), the large-scale ground hall with vault curtain wall, air-conditioning room at one end only, the difficulties and solutions of public area ventilation and air conditioning system form and system layout in public area are analyzed. The application of air-water system and on-site assembled ventilation unit in hub type large-scale ground hall station can adapt to its special architectural form and decoration style on the basis of realizing the function of ventilation and air conditioning. At the same time, to verify the rationality of smoke control design of large ground hall by fire prevention performance is elaborated.