Abstract
Human behaviour in a closed space such as an under ground structure during disaster is simulated by using distinct element method (DEM). DEM is the numerical analysis method in which the positions of the elements are calculated by solving the equations of motions step by step. Not only the individual but also the group behaviour can be obtained by using this method.
In this paper, we considered the DEM elements as humen beings and investigated the behaviour of the crowd flow that evacuates from the closed space to the outside through the passage or the steps. The trace of evacuating people and time history of the force that acts on the people can be easily calculated. The theoretical equations of input and output flow at the exit of the room are proposed according to the regression analysis based on the results of the DEM simulations. The present method enable us to simulate the evacuation during disaster.
