Effect of a Moving Obstacle on Pedestrian Flow Through an Exit

Xu, Han; Song, Weiguo; Zhang, Jun

doi:10.17815/cd.2021.125

Cited by 2 publications

(1 citation statement)

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“…study the effect of a moving obstacle on pedestrian flow through an exit. By comparing the profiles of individual evacuation time with and without a moving obstacle, it is proven that the average evacuation time can be reduced by a moving obstacle [24]. The moving obstacle can alleviate the 'faster-is-slower' effect and has a screening effect analogous to the effects of fixed obstacles [25].…”

Section: J Stat Mech (2023) 013401mentioning

confidence: 99%

Spatial and temporal analysis of the bottleneck flow under different walking states with a moving obstacle

Xu¹,

Ren²,

Song³

et al. 2023

J. Stat. Mech.

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The regulation of a moving obstacle on crowd movement offers the possibility to enhance evacuation efficiency in emergency situations. In this paper, a series of controlled experiments are conducted to study the effect of the moving obstacle on crowd dynamics for pedestrians in three different competitive levels, which respectively correspond to three different walking states. The enhancement effects of the moving obstacle on evacuation efficiency for the crowd in the dual-task and high-motivated walking states are confirmed, and the positions of the moving obstacle are crucial. It is found that the moving obstacle diminishes the order of the trajectories for the crowd in the dual-task and normal walking states, while it boosts near the exit for the crowd in the high-motivated walking state. And the moving obstacle makes the linear backward propagations of stop-and-go wave disappear for the crowd in the dual-task and high-motivated walking states, but the frequency of stop behavior increases for the crowd in the dual-task and normal walking states. The profiles of evacuation time show that the moving obstacle impedes the pedestrian flow from the front of the exit and increases evacuation efficiency for the pedestrians near the walls of the exit. The analysis of time headway suggests that the moving obstacle with a gap of 1.0 m or 1.2 m to the exit can reduce the number of the pedestrians waiting near the exit for the crowd in the dual-task and high-motivated walking states. Besides, the gap of 0.8 m between the moving obstacle and the exit makes the conflicts at the exit is increased, but the gap of 1.0 m or 1.2 m makes the number of conflicts at the exit be reduced. This study helps the evacuation management of dense crowds and improves the design of facilities to facilitate pedestrian traffic.

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Section: J Stat Mech (2023) 013401mentioning

confidence: 99%