Journal
PHYSICS LETTERS A
Volume 383, Issue 16, Pages 1897-1906Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physleta.2019.03.030
Keywords
Fatigue; Ascending evacuation; Floor field cellular automata; Merging streams
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Funding
- National Natural Science Foundation of China [11602206, 71573215]
- China Scholarship Council
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Fatigue even increases the complexity of the pedestrian dynamics which is regarded as a kind of nonlinear system, and might have a significant negative impact on the crowd evacuation. However, it has never been investigated completely and properly. Thus, the fine discrete floor field cellular automata model is modified by integrating the fatigue function to explore the influence of fatigue on the crowd ascending evacuation. The simulation fits well with the empirical data and the observations quantitatively and qualitatively, indicating the model captures the main features of evacuation considering fatigue impact. As a prediction, without merging streams, compared with the case of walking in constant speed, when fatigue is considered, it takes 71.4% longer for all persons to enter the stairs and 87.2% longer to evacuate. With merging streams, fatigue has little impact on the inflow, while it makes the total evacuation time 84.2% longer. (C) 2019 Elsevier B.V. All rights reserved.
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