Research the Occupants Safe Egress of Underground Pedestrian Street based on the Analysis of Fire Smoke Movement

As the research the occupants safe egress problem of underground pedestrian street, according to the ideas of performance-based design, propose the egress methods of the occupants in the underground pedestrian street based on the analysis of smoke movement. Such as the egress of the occupants in underground pedestrian street, fire simulation software FDS and evacuation software Building-Exodus were used to simulate smoke movement and the egress of the occupants of the underground pedestrian street, which can be obtained the available safe egress time TASET is 500 s, and required safe egress time TRSET is 454.6 s, comparing the both time, the egress design of the existing underground pedestrian street can meet the evacuation requirements.