Abstract
A simulation of pedestrian evacuation from room with internal obstacles is presented based on an improved Dynamic Parameter Model (DPM) in the paper. In order to reduce evacuation imbalance caused by the asymmetry of obstacles layout, a special technology is introduced to compute the shortest estimated distance from anyone cell site to exits in room, which determines two basic dynamic parameter: direction-parameter and empty-parameter. Actual and imaginary distances are merged into the shortest estimated distance through considering the effects of pedestrian jam around obstacles on evacuation path selection. The pedestrian evacuation flows with single exit and multi-exit are simulated under different obstacles layouts from two aspects: with fixed and unfixed initialization site. It is observed that improved model can effectively reduce evacuation imbalance.
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