Based On PyroSim And Pathfinder Commercial Complex Fire And Safety Evacuation Simulation Simulation Research

As the level of urbanization in China continues to increase,people's needs for shopping,entertainment,and office operations are constantly evolving.Lifestyle and entertainment venues have changed from traditional single-type malls to functional complex commercial complexes.This has resulted in commercial complexes.There is an increasingly obvious concentration in various cities.However,the structure and function of commercial complexes are complex.The major shopping and commercial spaces have gathered a large number of consumer groups.Each functional area has a large number of connected areas and the streamline is complex,which increases the risk of fire,easily leads to serious consequences,and causes greater economic losses.It even affects the stability of society.The fundamental starting point for fire safety is to minimize the number of casualties and property losses in fires.This paper conducts a simulation study on the fire and safety evacuation of commercial complexes.The main contents include simulations of fire hazards and personnel safety evacuation of commercial complexes to determine the safety of evacuation under specific fire scenarios,and then adopt reasonable fire prevention and control technologies to reduce Study the fire risk of the object,with a view to providing reference for the construction and fire department to conduct commercial complex fire prevention and control.First of all,this article combines the building characteristics of commercial complexes,proceeding from the process of fire development and spread,and analyzes the development process and fire prevention design difficulties of commercial buildings such as commercial complexes.At the same time,according to the rational design of fire scenes such as commercial complex structure,fire hazard probability,and building use characteristics,the fire process under a specific fire scenario of a commercial complex was simulated and analyzed using PyroSim fire simulation software.The results show that the smoke gas plays a leading role in the spread of fire and evacuates people through threats such as visibility,temperature and CO concentration,among which visibility has the greatest impact on safety evacuation.Combine the results of fire simulation analysis with the use of Pathfinder personnelevacuation simulation software to simulate and analyze the safety evacuation process of commercial complexes,study the evacuation process,human and group behavioral characteristics,and estimate the required safety of personnel in the existing environment.Evacuation time.Then,by comparing the available safety evacuation time and the required safety evacuation time in a specific fire scenario,the evacuation safety in a specific fire scenario is determined.Finally,aiming at the current economic benefits of most commercial complexes and ignoring the current status of personnel safety evacuation design within commercial complexes,fire prevention and control are proposed from four aspects of fire prevention and control,fire-fighting facilities,evacuation and rescue,and fire safety management within the building.Technical measures can effectively solve some problems in the fire prevention and control of commercial complexes and reduce the risk of commercial complex fires.