中国物理B ›› 2016, Vol. 25 ›› Issue (12): 128901-128901.doi: 10.1088/1674-1056/25/12/128901
• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇 下一篇
Bottleneck effects on the bidirectional crowd dynamics
Xiao-Xia Yang(杨晓霞), Hai-Rong Dong(董海荣), Xiu-Ming Yao(姚秀明), Xu-Bin Sun(孙绪彬)
- 1. State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing 100044, China;
2. School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China
Bottleneck effects on the bidirectional crowd dynamics
Xiao-Xia Yang(杨晓霞)1, Hai-Rong Dong(董海荣)1, Xiu-Ming Yao(姚秀明)2, Xu-Bin Sun(孙绪彬)2
- 1. State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing 100044, China;
2. School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China
摘要：
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.
中图分类号: (Transportation)
- 89.40.-a