Crowd Density Field Estimation Based on Crowd Dynamics Theory and Social Force Model

2019 ◽  
Vol 28 (3) ◽  
pp. 521-528
Author(s):  
Xinlei Wei ◽  
Junping Du ◽  
Meiyu Liang ◽  
Zhe Xue
Keyword(s):  
Density Field ◽  
Force Model ◽  
Social Force ◽  
Social Force Model ◽  
Crowd Dynamics ◽  
Crowd Density ◽  
Field Estimation

scholarly journals Analysis of Walking-Edge Effect in Train Station Evacuation Scenarios: A Sustainable Transportation Perspective

2019 ◽  
Vol 11 (24) ◽  
pp. 7188
Author(s):  
Kefan Xie ◽  
Benbu Liang ◽  
Yu Song ◽  
Xueqin Dong
Keyword(s):  
Edge Effect ◽  
Sustainable Transportation ◽  
Force Model ◽  
Social Force ◽  
Social Force Model ◽  
Train Station ◽  
Crowd Dynamics ◽  
Self Organized ◽  
Crowd Density ◽  
Individual Self

Due to the highly developed rail transit over the past decades, the phenomena of complex individual self-organized behaviors and mass crowd dynamics have become a great concern in the train station. In order to understand passengers’ walking-edge effect and analyze the relationship between the layout and sustainable service abilities of the train station, a heuristics-based social force model is proposed to elaborate the crowd dynamics. Several evacuation scenarios are implemented to describe the walking-edge effect in a train station with the evacuation efficiency, pedestrian flow, and crowd density map. The results show that decentralizing crowd flow can significantly increase the evacuation efficiency in different scenarios. When the exits are far away from the central axis of the railway station, the walking-edge effect has little influence on the evacuation efficiency. Obstacles can guide the movement of passengers by channelizing pedestrian flows. In addition, a wider side exit of the funnel-shaped corridors can promote walking-edge effect and decrease the pressure among a congested crowd. Besides providing a modified social force model with considering walking-edge effect, several suggestions are put forward for managers and architects of the train station in designing sustainable layouts.

scholarly journals Influence of different merging angles of pedestrian flows on evacuation time

Fire Research ◽  
2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Manuela Marques Lalane Nappi ◽  
Ivana Righetto Moser ◽  
João Carlos Souza
Keyword(s):  
Built Environment ◽  
Computer Simulations ◽  
Force Model ◽  
Social Force ◽  
Social Force Model ◽  
Evacuation Time ◽  
Emergency Evacuations ◽  
Crowd Dynamics ◽  
The Social ◽  
The Impact

The growing number of fires and other types of catastrophes occurring at large events highlights the need to rethink safety concepts and also to include new ways to optimize buildings and venues where events are held. Although there have been some attempts to model and simulate the movement of pedestrian crowds, little knowledge has been gathered to better understand the impact of the built environment and its geometric characteristics on the crowd dynamics. This paper presents computer simulations about pedestrians’ crowd dynamics that were conducted based on the Social Force Model. The influence of different configurations of pedestrian flows merging during emergency evacuations was investigated. In this study, 12 designs with different merging angles were examined, simulating the evacuation of 400 people in each scenario. The Planung Transport Verkehr (PTV, German for Planning Transport Traffic) Viswalk module of the PTV Vissim software (PTV Group, Karlsruhe, Germany) program was adopted, which allows the employment of the Social Force approach. The results demonstrate that both symmetric and asymmetric scenarios are sensitive to the angles of convergence between pedestrian flows.

Guided crowd dynamics via modified social force model

2014 ◽  
Vol 411 ◽  
pp. 63-73 ◽  
Author(s):  
Xiaoxia Yang ◽  
Hairong Dong ◽  
Qianling Wang ◽  
Yao Chen ◽  
Xiaoming Hu
Keyword(s):  
Force Model ◽  
Social Force ◽  
Social Force Model ◽  
Crowd Dynamics

A modified social force model for crowd dynamics

2017 ◽  
Author(s):  
Ummi Nurmasyitah Hassan ◽  
Zarita Zainuddin ◽  
Ibtesam M. Abu-Sulyman
Keyword(s):  
Force Model ◽  
Social Force ◽  
Social Force Model ◽  
Crowd Dynamics

An extended social force model for pedestrian evacuation under disturbance fluctuation force

2020 ◽  
Vol 31 (07) ◽  
pp. 2050102
Author(s):  
Juan Wei ◽  
Wenjie Fan ◽  
Yangyong Guo ◽  
Jun Hu ◽  
Yuanyuan Fang
Keyword(s):  
Mathematical Expression ◽  
Momentum Equation ◽  
Position Vector ◽  
Force Model ◽  
Pedestrian Flow ◽  
Social Force ◽  
Social Force Model ◽  
Fluctuation Force ◽  
Pedestrian Evacuation ◽  
Crowd Density

In order to characterize the disturbance fluctuation of pedestrian flow caused by the disturbance during evacuation and the state change of pedestrian flow, this paper improves the social force model by introducing disturbance fluctuation force. First, a momentum equation is established to describe the change of pedestrian flow under the influence of disturbance fluctuation, and the mathematical expression of disturbance fluctuation force is given. Second, the evacuation processes of pedestrian flow with and without “queue jumpers” are simulated with the simulation experimental platform, and the key factors influencing the performance of the model are deeply studied through numerical analysis. The results showed that: when the expected velocity is the same, the bigger the angle between the cross-section position vector and the initial expected velocity is, the more serious the congestion occurs at the exit. In addition, when the crowd density is small, the larger the angle, the higher the evacuation efficiency and vice versa.

scholarly journals Ordering leads to multiple fast tracks in simulated collective escape of human crowds

Soft Matter ◽  
2021 ◽  
Author(s):  
Chen Cheng ◽  
Jinglai Li ◽  
Zhenwei Yao
Keyword(s):  
Force Model ◽  
Social Force ◽  
Social Force Model ◽  
Scientific Problem ◽  
Crowd Dynamics ◽  
The Social ◽  
Typical Scenario

Elucidating emergent regularities in intriguing crowd dynamics is a fundamental scientific problem arising in multiple fields. In this work, based on the social force model, we simulate the typical scenario...

scholarly journals A re-examination of the role of friction in the original Social Force Model

2020 ◽  
Vol 121 ◽  
pp. 42-53 ◽  
Author(s):  
I.M. Sticco ◽  
G.A. Frank ◽  
F.E. Cornes ◽  
C.O. Dorso
Keyword(s):  
Force Model ◽  
Social Force ◽  
Social Force Model
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