Study On Fire Evacuation Path Optimization Of Large Commercial Buildings

During the operation of large-scale commercial buildings,because they includepedestrian streets,supermarkets,theaters,offices,public activity areas,etc.,the structure is complicated and the number of people is dense.Especially in underground commercial buildings,the escape routes are few and narrow,and the ventilation is bad.Once there are fire,earthquake,terrorist attacks and other emergencies can easily cause panic,crowding,and even trampling in the mall,causing heavy casualties and economic losses.Therefore,today,in advocating respect for life and people-oriented,it is of great significance to study the problem of evacuation of people in large commercial buildings.This article takes the example of a Wanda Plaza project as the background and focuses on the fire evacuation of large commercial buildings.First,discussing the impact of crowd psychological factors,personnel behavior factors,social power and environmental factors on the safety evacuation of large commercial buildings;Second,through the artificial immune system model algorithm studies the impact of social power on evacuation among people,analyzes the psychological characteristics of evacuees in commercial buildings under fire conditions,and use Matlab to simulate the optimized path of personnel evacuation,combined with the improved combined network model,and refer to the CAD drawings of the actual project case,use Revit,Pathfinder 2019 software to establish an equal proportion building evacuation model,verify the optimal path,and analyze the behavior characteristics of evacuees in commercial buildings under fire conditions;Then,based on the verification of the optimal path,further simulation of the full load scenario of the mall,experiments on the maximum capacity of the mall,analyze and think about the evacuation of some people using escalators,and observe the evacuation bottlenecks in the mall during different fire periods.Deepen the design of the mall,draw conclusions,and make some reference suggestions.Finally,according to the mathematical model of this article and Pathfinder 2019 simulation of the evacuation path results,using JAVA language and We Chat developer platform,design and develop a large-scale commercial building personnel evacuation service system--Personnel Evacuation Service System,and linking to light mobile applications in shopping malls,when fires and other accidents occur,it is convenient for people in commercial buildings to query the dynamic optimal evacuation path in real time,which provides a strong technical reference for the evacuation of fire in large commercial buildings in the future.