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

作　　者：Jinbin Zhang Jun Zhu Pei Dang Jianlin Wu Yuxuan Zhou Weilian Li Lin Fu Yukun Guo Jigang You 

机构地区：[1]Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu,People’s Republic of China [2]Institute of Geodesy and Geoinformation,University of Bonn,Bonn,Germany [3]School of Engineering and Geomatics,Southwest Petroleum University,Chengdu,People’s Republic of China

出　　处：《International Journal of Digital Earth》2023年第1期1186-1204,共19页国际数字地球学报（英文）

基　　金：supported by the National Natural Science Foundation of China[grant no 42271424,42171397];Sichuan Transportation Science and Technology Program[grant no 2021-B-02];Chengdu Science and Technology Program[grant no 2021XT00001GX].

摘　　要：Crowd evacuation simulation using virtual reality(VR)is significant for digital emergency response construction.However,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 evacuation.To 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 analyses.The experimental results show that the crowd evacuation time of the ISFM is affected by the disaster severity.In 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,respectively.The 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 

分 类 号：D631.43[政治法律—政治学]