Dual effects of pedestrian density on emergency evacuation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

12 Scopus Citations
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Detail(s)

Original languageEnglish
Pages (from-to)435-439
Journal / PublicationPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume381
Issue number5
Publication statusPublished - 5 Feb 2017

Abstract

This paper investigates the effect of the pedestrian density in building on the evacuation dynamic with simulation method. In the simulations, both the visibility in building and the exit limit of building are taken into account. The simulation results show that the effect of the pedestrian density in building on the evacuation dynamics is dual. On the one hand, when the visibility in building is very large, the increased pedestrian density plays a negative effect. On the other hand, when the visibility in building is very small, the increased pedestrian density can play a positive effect. The simulation results also show that when both the exit width and visibility are very small, the varying of evacuation time with regard to the pedestrian density is non-monotonous and presents a U-shaped tendency. That is, in this case, too large or too small pedestrian density in building is disadvantageous to the evacuation process. Our findings provide a new insight about the effect of the pedestrian density in building on the evacuation dynamic.

Research Area(s)

  • Exit, Pedestrian density, Pedestrian evacuation, Visibility