EFFECT OF PEDESTRIAN FORWARD DISTANCE ON RETENTION PROPERTIES IN A SINGLE CROWD FLOW WITHOUT MERGING: Evaluation of Staircase Retention Properties in High-Rise Buildings Using SAG-EB Model

Crowding in staircases of high-rise buildings increases the risk of crowd accidents during evacuations. We investigated a method to control congestion in staircases by controlling the walking rules of evacuees. SAG-EB model was developed to reproduce the crowd flow characteristics during stopping and going and to visualize the distribution of congestion conditions. Parameter studies were conducted with this model. As a result, it was clarified that, as a method to suppress the propagation of congestion due to stop and go, it is effective to keep a distance when walking and to close the forward spacing when stopping and going.