Simulation of pedestrian dynamics at occurrence of disaster using CA-model

Abstract

In this study, a powerful and useful simulation method using a simple CA-model is proposed to approach the live design of buildings. If buildings are used by the general public, it must be done to guarantee safety and security in them in case of emergency such as fire, earthquake, terrorism, and so on. Two examples such as an office floor and a shopping area are treated in fire emergency to show the validity of this proposed method. The complex phenomenon such as an evacuation process for pedestrian is modelled by simple transition rules, and then the pedestrian dynamics in emergency is reproduced and its effectiveness is verified visually by the use of a computer graphics technique. In concrete, the process that people rush to the exit is verified. And the process for inducing the pedestrians to exits is reproduced. In addition, the evacuation action from flame is also reproduced. Such a complex phenomenon is difficult to express and solve by a conventional differential equation. However, the simulation method using a simple CA-model can overcome the difficulty easily. .