ABSTRACT
Safety evacuation is an important factor that needs to be considered in building safety design. The setting of evacuation outlet obstacles greatly impacts the evacuation of people. In order to more accurately understand the influence of obstacles on the evacuation efficiency of evacuation exits, this paper considers the influence of the shape and size of obstacles on evacuation efficiency. Firstly, the Pathfinder software is used to simulate the obstacle at 1.0 m from the dispersion outlet. The influence of obstacle shape and size on evacuation efficiency under different conditions is simulated by constructing different evacuation scenarios. It is concluded that when the evacuation number is the same, the evacuation time changes with the change in the size and shape of the obstacle; when the number of evacuations is different, the evacuation time increases with the number of evacuations under the same obstacle condition. The results show that the shape and size of obstacles have a significant indigenous effect on evacuation efficiency when the number of people is different. The motion curve and extreme value of evacuation results provide a reference for the design of building exits and further study of evacuation.
