Microscopic dynamics of the evacuation phenomena in the context of the Social Force Model

Cornes, F. E.; Frank, G.A.; Dorso, C. O.

doi:10.1016/j.physa.2021.125744

Cited by 24 publications

(19 citation statements)

References 24 publications

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“…The observed behaviors relating the time lapses and the blocking clusters were also reported in Ref. [14]. Fig.…”

Section: Delay Analysissupporting

confidence: 80%

“…Human clusters arise when pedestrians get in contact between each other and are responsible for the time delays during the evacuation process [3,7,8,13,14]. Clusters of pedestrians can be defined as the set of individuals that for any member of the group (say, i) there exists at least another member belonging to the same group (j) in contact with the former.…”

Section: Clustering Structuresmentioning

confidence: 99%

“…7 exhibits the usual "Faster-Is-Slower" and "Faster-Is-Faster" behaviors, as explained in the literature (see Refs. [8,13,14]). However, the presence of dyads worsens the evacuation performance.…”

Section: Evacuation Time With Social Groupsmentioning

confidence: 99%

“…As pressure undergoes dangerous levels, the crowd is supposed to behave as a compact human cluster because of the friction among the pedestrians. This is known as the "Faster-Is-Faster" regime [7,9,[13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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Microscopic dynamics of escaping groups through an exit and a corridor

Rozan,

Frank,

Cornes

et al. 2021

Preprint

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This research explores the dynamics of emergency evacuations in the presence of social groups. The investigation was carried out in the context of the basic Social Force Model (SFM). We included attractive feelings between people belonging to the same social group, as proposed in Ref. [1]. We focused on the escaping dynamics through an emergency exit and through a corridor. We confirmed the results appearing in Ref.[1] for a desired velocity of 4 m/s, but further extended the analysis on the emergency exit to the range 1-8 m/s. We noticed that the presence of groups worsens the evacuation performance. However, very strong feelings can improve the escaping time with respect to moderate feelings. We call this phenomenon "Closer-Is-Faster", in analogy to the "Faster-Is-Slower" effect. The presence of social groups also affects the dynamic within a corridor by introducing an additional slow-down in the moving crowd.

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“…The observed behaviors relating the time lapses and the blocking clusters were also reported in Ref. [14]. Fig.…”

Section: Delay Analysissupporting

confidence: 80%

Section: Clustering Structuresmentioning

confidence: 99%

Section: Evacuation Time With Social Groupsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Microscopic dynamics of escaping groups through an exit and a corridor

Rozan,

Frank,

Cornes

et al. 2021

Preprint

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“…A "blocking cluster" is defined as the minimal granular cluster which is closest to the door whose first and last agents are in contact with the walls at both sides of the door [44]. Previous studies have demonstrated that the blocking clusters play a crucial role in preventing pedestrians from getting through a door [44,45,46].…”

Section: Blocking Clustersmentioning

confidence: 99%

Improving competitive evacuations with a vestibule structure designed from panel-like obstacles

Sticco,

Frank,

Dorso

2021

Preprint

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It has been shown that placing an obstacle in front of an exit door has proven to be a successful method to improve pedestrian evacuations. In this work, we will focus on the space limited by the exit and the obstacles (i.e. the vestibule structure). We analyzed two different types of vestibules: the twoentry vestibule (which consists of a single panel-like obstacle) and the three-entry vestibule (which consists of two panel-like obstacles). In the former, we studied the effects of varying the walls' friction coefficient κ w and the distance from the obstacle to the exit door d. In the latter, we varied the space between the two panels (gap). We found that the three above mentioned parameters control the vestibule's density, which subsequently affects the evacuation flow (fundamental diagram). We have also found that reducing the distance d or increasing the friction facilitates the formation of blocking clusters at the vestibule entries, and hence, diminishes the density. If the density is too large or too low, the evacuation flow is suboptimal, whereas if the density is around 2 p/m 2 , the flow is maximized. Our most important result is that the density (and therefore the evacuation flow) can be precisely controlled by κ w , d, and the gap. Moreover, the three-entry vestibule produced the highest evacuation flow for specific configurations of the gap and the distance from the panels to the door.

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VR-based fire evacuation in underground rail station considering staff’s behaviors: model, system development and experiment

Wang

Mao

et al. 2022

Virtual Reality

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Microscopic dynamics of the evacuation phenomena in the context of the Social Force Model

Cited by 24 publications

References 24 publications

Microscopic dynamics of escaping groups through an exit and a corridor

Microscopic dynamics of escaping groups through an exit and a corridor

Improving competitive evacuations with a vestibule structure designed from panel-like obstacles

VR-based fire evacuation in underground rail station considering staff’s behaviors: model, system development and experiment

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