Research On Fire Evacuation Model Based On PyroSim

With the rapid development of the urban process,large-scale shopping malls and entertainment centers are all developing toward a highly integrated and integrated Zhongting architecture.This kind of building integrates supermarkets,shopping,catering,and entertainment.The fire is one of the many problems that arise while satisfying the demand of national consumption.In the event of a fire,due to the dense number of people in the Zhongting shopping mall,the variety of goods and the complexity of the structure,the high-temperature gas generated by the fire quickly spread through the corridors and stairwells in the entire shopping mall,and the human life brought huge prestige.The economic loss.Therefore,the use of specialized numerical simulation software to simulate the fire in the middle of the building to study the problem of personnel evacuation in the fire has an important auxiliary significance for fire rescue.This article takes a large shopping center as the experimental object,aiming at the serious problem of the damage caused by the fire accident of the Zhongting building,based on the domestic industry standard and related requirements.The fire simulation software FDS is used to model and analyze the smoke movement in the atrium building fire,changes in the concentration of toxic gases such as carbon monoxide(CO),and changes in the temperature of the fire scene.Evac in the fire simulation software PyroSim simulates the evacuation of people.Combined with flue gas movement and temperature change,the evacuation plan was analyzed,and the simulated raw data was summarized and analyzed.Due to factors such as collision of people,the evacuation time will be affected,leading to the subsequent study of social forces.Overlapping locking and interaction forces in the actions of people in social forces will have an impact on evacuation.By analyzing the traditional social force core algorithm in fire simulation,the social force algorithm has a certain number of parameter optimization problems.By increasing the prediction mechanism of personnel's future power,the parameters Ai and Bi in the algorithm are optimized using fuzzy processing methods.In the movement of people,the area of human settlements,the composition of people,the width of evacuation channells,etc.have an impact on it.Comparing the evacuation results under the traditional social force algorithm with the optimized evacuation results,the error of 62%was reduced,making the evacuation results more suitable to the real evacuation scene and improving the accuracy of the model.Through the study of fire scene simulation,this paper simulated the flow of people in the fire more accurately.It provides some reference help for the personnel's escape and fire protection work,and provides reasonable guidance for the allocation of fire prevention measures in similar buildings.