Research on the Spatio-temporal Pass Index Model in Emergency Evacuation

Based on the analysis of the mixed traffic evacuation in china, this paper presented the behavior characteristics and inherent laws of the mixed traffic evacuation, designed the quantification model of evacuation behaviors and road availability model. By using the BPR function and UE model, the mixed traffic Emergency Evacuation Spatio-temporal Pass Index Model (EESPIM) which possessed the dual-layer programming structure was designed by considering the maximum of road availability and the minimum of evacuation time as the index of optimal evacuation path choice. Finally, the optimal evacuation path choice by virtue of the improved heuristic algorithm, which provided the scientific evidence for decision-making in the emergency evacuation.