The effect of geometric layout of exit on escape mechanism of crowd

作     者：Jia Li Jinghong Wang Shuangyan Xu Jiaojiao Feng Jiachen Li Zhirong Wang Yan Wang Jia Li;Jinghong Wang;Shuangyan Xu;Jiaojiao Feng;Jiachen Li;Zhirong Wang;Yan Wang

作者机构：Jiangsu Key Laboratory of Urban and Industrial SafetyCollege of Safety Science and EngineeringNanjing Tech UniversityNanjing 211800China Department of Public AdministrationSchool of LowNanjing Tech UniversityNanjing 211800China 

出 版 物：《Building Simulation》 (建筑模拟（英文）)

年 卷 期：2022年第15卷第4期

页      面：659-668页

核心收录：

学科分类：081302[工学-建筑设计及其理论] 08[工学] 0813[工学-建筑学] 

基　　金：This research was sponsored by the National Natural Science Foundation of China(No.71774079) the Major Natural Science Research Projects in Colleges and Universities of Jiangsu Province(No.19KJA460011) the National Natural Science Foundation of China(No.51874182) the Postgraduate Research&Practice Innovation Program of Jiangsu Province(No.SJCX20_0365) a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions 

主　　题：exit geometric layout-crowd evacuation Massmotion social force model 

摘      要：In dense crowd evacuation,especially in emergencies such as fires,the safe evacuation of large public facilities will face major *** the same time,as cluster congestion tends to occur in the space where the flow rate drops sharply,the superposition of fire incidents and bottleneck areas can easily evolve into malignant disasters and crowd stampedes with serious harm and *** this paper,Massmotion based on social force model is used to carry out a numerical simulation on exit position and corner exit form to find out the mechanism and influence law of the slight architectural adjustment on the flow at *** results show that the traditional middle exit design is not the best,and the evacuation efficiency of the corner exit is higher than that of the middle *** with other corner exits,the average time interval between two adjacent persons passing through the bottleneck under the 30°corner exit is the shortest,and the probability of outlet clogging drops the fastest,exceeding 18%of the slowest descending *** the 0°corner exit,the waiting time cost of pedestrians is high and the risk of evacuation is *** outcomes of this work can provide reference for the structural design of the building and the safe evacuation of personnel,so as to improve the evacuation efficiency and safety of pedestrians in the building to some extent.