Spatial Characteristic Indicator of Pedestrian Facilities for Evacuation

The spatial characteristic indicators of pedestrian facilities for evacuation are presented in order to contribute to the organization and management of pedestrian evacuation flow. An evacuation network is constructed based on the spatial layout of pedestrian facilities, in which the nodes represent moving sub-areas and two-way arc is on behalf of moving bottlenecks. Spatial characteristic indicators are built based on Multiple Origins Single Destination (MOSD) evacuation network including movement distance, movement amount, evacuation bottleneck, and evacuation aggregation extent. Through a case, the computation and application of the spatial characteristic indicators are presented in the layout analysis of pedestrian facilities, in which relevant improvement measures of spatial layout are advised.