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The purpose of this study is to contrive quantitative evaluation methods for evacuation safety performance of building based on elucidation of analysis method of appropriate evacuation moving time. In this paper, instead of full-scale experiment, properties considered as significant in simulation result were extracted and fundamental mechanism of the state transition in stairs confluence of building evacuation was analyzed. Moreover, in order to evaluate the fundamental mechanism, stairs inflow time in the six case studies were compared. As a result, the fundamental mechanism analysis proposed in this paper was able to analyze appropriate evacuation moving time and showed that it was practically useful than conventional calculation method.

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Cellular Automata (CA) has been applied to walking behavior modeling of people in evacuation simulation from rooms with several exits, pathways and stairways in business buildings. The simulation results by this CA model were compared with predicted values by public evacuation calculation methods, and the validity of the results was verified. As a result, the reduction of flow rate of the exit as an inductive emergent phenomenon was shown in the simulation. Furthermore, this CA model was applied to the evacuation planning of a high-rise business building, and it was verified in practical design process.