Research And Simulation Of Evacuation Model During Fire In The Multi-storey Building

Once conflagration was broke out in a multistoried building where with high density and complex composition of people,it was extremely easy to cause a situation in which many people were injured and died.Therefore,the study of evacuation is very essential.In this paper,we regard a multi-story experimental building as the background of research,and established an evacuation model with perceptual function based on the technology of multi-agent,to discussing the behavior of evacuation in dynamic disaster environment.In order to understanding the rules of smoke movement in disaster environment,we created the model of multistoried building by using the PyroSim,and established a fast-developing fire model based on relevant literature to obtaining the effect of smoke diffusion on the scene's visibility and temperature,to observing the movement of smoke.Meanwhile,we were set up an evacuation model which has perceptual function to get surrounding information by event-driven manner,and gave it some attributes,like gender and familiarity with scene,to studies how to affecting the evacuation speed and path by psychological activities,personnel attributes and movement of smoke.Based on the personnel evacuation model and the disaster model,a simulation experiment including three cases was carried out,to study how the location of exit and the effective disaster information affects the evacuation of personnel.By comparing and analyzing the experimental data of three situations,it can be concluded that setting escape exit near the evacuation staircase can improve the evacuation efficiency;by transmitting effective disaster information to escaper can be improved the speed of evacuation and reduced the evacuation time.The evacuation model presented in this paper is scientific and reasonable,which can reflect the situation of evacuation and helpful to the research of evacuation.