Simulation of Pedestrian Evacuation Using Conjugated Forces Model to Explore the Optimal Bypassing Strategy

TL;DR

This paper introduces a conjugated forces model (CFM) for simulating pedestrian evacuation, focusing on bypassing behavior, and identifies optimal strategies based on exit width and crowd size.

Contribution

The paper proposes a novel CFM that accurately reproduces bypassing behavior and explores optimal evacuation strategies through simulation.

Findings

Optimal bypassing strategies depend on exit width.

CFM effectively models microscopic bypassing behavior.

Simulation results inform evacuation planning.

Abstract

The conjugated forces model (CFM) capable of reproducing bypassing behaviour is proposed and adopted to simulate pedestrian evacuation. Primarily, the concept of collision and evading and surpassing behaviour is particularly defined to describe the proposed CFM. A pedestrian whose behaviour can be described by the CFM will change his desired direction when confronted with a collision, and choose to actively bypass others. Secondly, pedestrian movement in a passageway is simulated to testify the capacity of the CFM to reproduce microscopic bypassing behaviour, and the bypassing parameter is then introduced to describe different movement strategies. Finally, Evacuation form a one-exit room is simulated to find the optimal bypassing strategy. It is concluded that the optimal bypassing strategy varies with different exit width and initial pedestrian number.