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An improved social force model (ISFM)-based crowd evacuation simulation method in virtual reality with a subway fire as a case study

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International Journal of Digital Earth 2023年第1期16卷 1186-1204页

作者： Jinbin Zhang Jun Zhu Pei Dang Jianlin Wu Yuxuan Zhou Weilian Li Lin Fu Yukun Guo Jigang You Faculty of Geosciences and Environmental Engineering Southwest Jiaotong UniversityChengduPeople’s Republic of China Institute of Geodesy and Geoinformation University of BonnBonnGermany School of Engineering and Geomatics Southwest Petroleum UniversityChengduPeople’s Republic of China

Crowd evacuation simulation using virtual reality(VR)is significant for digital emergency response ***,existing evacuation simulation studies suffer from poor adaptation to complex environments,inefficient evacuations,and poor simulation effects and do not fully consider the impacts of specific disaster environments on crowd *** more realistically express the crowd evacuation results obtained under the influence offire environments and the subjective consciousness of pedestrians in subway stations,we designed a dynamic pedestrian evacuation path planning method under multiple constraints,analysed the influences of an‘environmental role’and a‘subjective initiative’on crowd evacuation,established an improved social force model(ISFM)-based crowd evacuation simulation method in VR,developed a prototype system and conducted experimental *** experimental results show that the crowd evacuation time of the ISFM is affected by the disaster *** simulation experiments without disaster scenarios,the improved model’s crowd evacuation efficiency improved by averages of 12.53%and 15.37%over the commercial Pathfinder software and the original social force model,*** method described herein can effectively support real-time VR crowd evacuation simulation under multiexit and multifloor conditions and can provide technical support for emergency evacuation learning and management decision analyses involving subwayfires.

关键词： Subway stationfire improved social force model crowd evacuation simulation virtual reality path planning

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