The commercial center of Guangzhou Tianhe is as an example for the study of the smoke spread speed

temperature

the CO concentration

variation of visibility and evacuation behavior characteristic of indoor personnel in the highrise building fire scene through FDS and Pathfinder. The simulation results show that the intermediate stage process plays a decisive role on personnel evacuation during the available safe evacuation time in the highrise building fire scene. In the intermediate stage process

personnel movement speed becomes slow because of the increase of path selection difficulty. The evacuation speed will improve if suitably induced or increase diversion facilities to avoid congestion. In this case

only through the evacuation stairs for evacuation is unrealistic. Considering the high temperature gas toxic may spread through the gap into the elevator

fire evacuation elevator should only stop hedging layer

ground floor or floor near the fire area. FDS case can directly import into the Pathfinder simulator.The best evacuation time will be find out according to actual situation through the FDS simulation of highrise building fire combined with Pathfinder simulation of evacuation in the actual case.