A Relationship-Based Pedestrian Social Groups Model

Abstract

In the crowd evacuation process, pedestrians will produce self-organization phenomenon. Family members, friends and other closely related people will be formed group according to the degree of intimacy. The closer the relationship between people, the higher their aggregation in the group. Although the original social force model can simulate arching in the portals, “faster-is slower” and other phenomena. But in the process of movement, pedestrians are an isolated individuals, who have no association with the rest of surrounding people. This cannot truly reflect the group characteristics during crowd movement process. To simulate this pedestrian behavior in the process of movement, a social groups force model is proposed. However, the social groups model does not take the influence of strength of group membership on the group behavior into account. In view of the above shortcomings, this paper proposes a pedestrian social groups force model based on relationship strength. To consider the influence of the relationship strength on the group attribution force in the model, the model can reflect the features of pedestrian behaviors in the process of movement, and achieve a more efficient and more realistic crowd movement.