Research On Evacuation Simulation Method Based On Social Behavior

In recent years,the safety issue of social activities of large-scale groups has gradually become the focus of our attention.The crowd evacuation simulation technology can grasp the law of crowd evacuation through simulating,analyzing and predicting the behaviors of large-scale crowd.Thus,this technology effectively reduces the public safety risks to a certain extent,and crowd evacuation simulation has become the focus and hotspot among the researchers in the field of public safety nowadays.In the emergency evacuation scenario,the typical social attributes each individuals has will affect their evacuation behaviors and become key factors that cannot be ignored.This thesis introduces and applies three social factors to the crowd evacuation simulation,so as to propose an evacuation simulation method.We study the influence of environmental familiarity,team factors,and the spread of evacuation information on the evacuation process to make the simulation results have high authenticity.The main research work of this dissertation is as follow:1)The research status and achievements related to evacuation simulation are reviewed.The existing evacuation simulation algorithms,the social behavior simulation methods and the information dissemination model are analyzed and summarized.2)An evacuation simulation method considering individual's environment familiarity and team factors is proposed.In this method,RVO algorithm is used in underlying simulation to realize real-time obstacle avoidance.Our method added local target points and used selection mechanisms for target points in order to simulate the social.behaviors caused by two social factors.3)The information dissemination is introduced into the evacuation simulation,and an evacuation simulation method based on information dissemination is proposed to simulate the information exchange among agents in evacuation process.We define the evacuation information in detail.Besides,we use the mechanism of infectious disease algorithm SI to simulate the process of information dissemination and fuse different evacuation information at last.4)According to the above proposed method,relevant experiments were designed to verify the validity of the proposed method.