Research On Subway Station Fire And Evacuation Based On BIM

With the rapid construction of the city,subway rail transit plays a more and more important role in people’s daily traffic.Compared with other public transport modes,the rail transit line of subway has the characteristics of safe and punctual transportation and large number of passengers.It has greatly reduced the urban congestion,energy conservation and emission reduction,and has made great contributions to the economic development of the city.However,in the closed underground space,people will face many risks because of the restrictions on their actions.Among them,fire is the biggest factor causing the death in the subway.Due to the rapid heating and emission of a large number of toxic smoke during the fire,the safety of the subway station personnel is threatened,and the property and facilities will also be damaged.Because of the large population and narrow space in the subway,it is difficult to carry out emergency evacuation and emergency rescue activities.The tragic accidents caused over the years are thought-provoking.Therefore,it is necessary to study the distribution law of smoke diffusion in subway stations with time and analyze the situation of evacuating the mobile crowd in the subway station.At present,there are a lot of researches on fire law and evacuation situation,among which the most abundant research results are computer simulation.However,there are still some shortcomings in the computer simulation method,such as the building model is not accurate enough,which may affect the simulation results Modeling technology to establish the subway station model,and then imported into the fire simulation software FDS and personnel evacuation simulation software Pathfinder,will bring great convenience to the simulation,and will make the final results of numerical simulation more perfect and detailed.This paper takes an underground two-story Island subway station as the research object,summarizes the process of building the three-dimensional model of the subway station with Revit,verifies the feasibility and convenience of importing the model into the simulation software FDS and Pathfinder,and studies the smoke diffusion law of subway station hall floor,platform floor and train parking in subway station with pyrosim The software simulates the evacuation of two evacuation modes in the three situations of the subway station,analyzes and judges whether the subway station meets the requirements of safe evacuation,and provides support for the combination of simulation technology of subway station fire and evacuation with BIM software.Figure[34]table[8]reference[60]...