Potential Grads Model Based Quasi-Dynamic Method for Escape Route Distribution

This paper analyzed the potential grads model (PGM) based quasi-dynamic method (QDM) used to solve the problem of emergent evacuation in complex building channels. The method is used to indicate the optimized or hypo-optimized route for evacuation, which makes the whole of the escapee evacuate in shortest distance, lowest resistance and best time. The method could also set priority of special crowds made up of the old and weak for their preferential evacuation to prevent crowding and trample. The method fits conditions of escape route distribution of school, office room, shopping mall, complicated underground building and passenger ship, etc.