Discussion on antinomy property of chapter 6 and 8 in the Code for fire protection design of tall building and its solution

Based on the studies of air flow model of pressurization air supply and smoke control scheme for years and the analysis on the interrelated items in chapter 6 and 8 in the code, discovers that the mathematical models and countermeasures of pressure air volume in chapter 8 are proposed under the condition of the smoke prevention staircase without evacuation exit to outside, which goes against the relevant regulation about safe evacuation in chapter 6 and lacks of the basis and theoretical support. Puts forward the flow distribution method of equivalent flow area and the fluid-network analysis method according to the characteristics of pressurization airflow in the four smoke control schemes.