考虑情绪感染的人员疏散模型研究

Pedestrian Evacuation Model Considering Emotional Infection

为了探讨恐慌情绪在人群疏散中的作用,将SIR和SIS情绪感染模型相结合,并在CA模型的基础上构建了一种考虑恐慌情绪感染的人群疏散模型。讨论了情绪阈值和情绪衰减速率对行人疏散过程的影响规律。研究结果表明:与未考虑恐慌情绪的疏散模型相比,高度恐慌下的行人会失去理性判断并占据他人疏散路径,导致自身和周围个体疏散效率下降,整体疏散时间延长。通过研究情绪阈值对疏散效率的影响,发现感染阈值与免疫阈值共同确定个体状态。情绪衰减速率影响个体状态变化速率,且存在一个决定情绪蔓延或衰减的临界值。

To explore the role of panic in crowd evacuation,a crowd evacuation model considering panic infection is constructed based on SIR model,SIS model and CA model.The influences of emotional threshold and emotional decay rate on the evacuation process of pedestrians are discussed.The results show that pedestrians under high panic might lose rational judgment and hinder the evacuation of the crowd around,resulting in a decrease of evacuation efficiency.It can be found that the state of an individual depends on the infection threshold and the immune threshold.The emotional decay rate affects the change rate of the individual state,and there is a critical value that determines the spread or decay of emotion.