Optimal layout design of obstacles for panic evacuation using differential evolution
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- 作者：Yongxiang Zhaoa ; b ; Meifang Lia ; limeifang@fzu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Xin Luc ; Lijun Tiana ; Zhiyong Yud ; Kai Huanga ; Yana Wanga ; Ting Lia
- 关键词：Panic evacuation ; Social force model ; Obstacle optimization ; Pedestrian outflow ; Differential evolution ; Crowd pressure
- 刊名：Physica A: Statistical Mechanics and its Applications
- 出版年：2017
- 出版时间：1 January 2017
- 年：2017
- 卷：465
- 期：Complete
- 页码：175-194
- 全文大小：5477 K
文摘
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Differential evolution is used to optimize the geometrical parameters of obstacles.
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Profiles of density, velocity, specific flow as well as crowd pressure are analyzed.
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Placing an obstacle in panic situations promotes the pressure to a much higher level.
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Physical mechanism of efficiency enhancement is a reduction of high density region.
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Panel is more robust than pillar to guarantee the enhancement of pedestrian outflow.