Cellular automation model of pedestrian evacuation considering obstacle crossing behaviors

中国安全科学学报 Pub Date : 2021-01-27 DOI:10.16265/J.CNKI.ISSN1003-3033.2020.04.012

Song Yinghua, Tu Wenhao, Huo Feizhou, Lyu Wei, Fang Danhui

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Abstract

In order to study influence of obstacle crossing behaviors on pedestrian evacuationꎬ a cellular automation model of evacuation considering such behaviors is established. Concept of risk degree was introduced in the model and used to define surmountable obstacles and unsurmountable obstacles. And through two different neighborhoodsꎬ crossing obstacles was realized. Thenꎬ a scenario of evacuation after earthquake was created to simulate evacuation process with different initial pedestrian density and 第 4 期宋英华等: 考虑跨越障碍物行为的元胞自动机模型 proportion of pedestrians crossing obstaclesꎬ and influence of initial densityꎬ obstacle crossing behaviors and pedestrian ratio on evacuation process was analyzed. The results show that obstacle crossing behaviors make simulation process more consistent with pedestrian's movement mode in reality and eliminate some obstructions caused for them to detour obstacles. Increasing initial pedestrian density has less effect on scenes of crossing obstacles than on detouring obstacles. When they are faced with surmountable obstaclesꎬ the higher the proportion of pedestrians crossing obstacles isꎬ the shorter time evacuation takes.

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考虑过障行为的行人疏散元胞自动化模型

为了研究过障行为对行人疏散的影响ꎬ，建立了考虑过障行为的疏散元胞自动化模型。在模型中引入了风险度的概念，用于定义可克服障碍和不可克服障碍。通过两个不同的街区ꎬ穿越障碍得以实现。然后ꎬ创建地震后疏散场景，模拟不同初始行人密度和行人过障比例下的疏散过程ꎬ，分析初始密度ꎬ过障行为和行人比例对疏散过程的影响。结果表明，该过障行为使仿真过程更符合行人在现实中的运动方式，消除了行人绕行障碍物所造成的一些障碍。增加初始行人密度对穿越障碍物场景的影响小于对绕行障碍物场景的影响。当面对可跨越的障碍物ꎬ时，行人穿过障碍物的比例越大ꎬ，疏散所需的时间越短。

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来源期刊

中国安全科学学报

CiteScore

1.30

自引率

0.00%

发文量

8733

期刊介绍： China Safety Science Journal is administered by China Association for Science and Technology and sponsored by China Occupational Safety and Health Association (formerly China Society of Science and Technology for Labor Protection). It was first published on January 20, 1991 and was approved for public distribution at home and abroad. China Safety Science Journal (CN 11-2865/X ISSN 1003-3033 CODEN ZAKXAM) is a monthly magazine, 12 issues a year, large 16 folo, the domestic price of each book is 40.00 yuan, the annual price is 480.00 yuan. Mailing code 82-454. Honors: Scopus database includes journals in the field of safety science of high-quality scientific journals classification catalog T1 level National Chinese core journals China Science and technology core journals CSCD journals The United States "Chemical Abstracts" search included the United States "Cambridge Scientific Abstracts: Materials Information" search included