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Bottleneck effects on the bidirectional crowd dynamics

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The bottleneck effect on bidirectional crowd dynamics is of great theoretical and practical significance,especially for the designing of corridors in public places,such as subway stations or airports.Based on the famous social force model,this paper investigates the bottleneck effects on the free flow dynamics and breakdown phenomenon under different scenarios,in which different corridor shapes and inflow ratios are considered simultaneously.Numerical simulation finds an interesting self-organization phenomenon in the bidirectional flow,a typical characteristic of such a phenomenon is called lane formation,and the existence of which is independent of the corridor's shape and inflow rate.However,the pattern of the lane formed by pedestrian flow is related to the corridor's shape,and the free flow efficiency has close relationship with the inflow rate.Specifically,breakdown phenomenon occurs when inflows from both sides of the corridor are large enough,which mostly originates from the bottleneck and then gradually spreads to the other regions.Simulation results further indicate that the leaving efficiency becomes low as breakdown occurs,and the degree of congestion is proportional to the magnitude of inflow.The findings presented in this paper match well with some of our daily observations,hence it is possible to use them to provide us with theoretical suggestions in design of infrastructures.

bidirectional pedestrian flowsocial force modelpedestrian behaviorbottleneck

Xiao-Xia Yang、Hai-Rong Dong、Xiu-Ming Yao、Xu-Bin Sun

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State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing 100044, China

School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China

Project supported jointly by the National Natural Science Foundation of ChinaProject supported jointly by the National Natural Science Foundation of China

Grant Nos.613223072016YJS023

2016

10.1088/1674-1056/25/12/128901

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDCSCDSCIEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2016.25(12)
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