The Study Of Fire Simulation And Occupants Evacuation Of The Civil Airport Hangar Base On BIM

As one of the most important tools of modern urban transportation,aviation industry is undertaking more and more transportation tasks.As a key link in the transportation,airports are setting up more and more with the growth of China’s economy.According the report of 2015 civil aviation development statistics,by the end eof 2015,China has a total of 210 airports certificated.As the important part of airport,once the fire happened in the hangar where aircrafts park and maintain in,it will cause great economic loss of property,and the public bad influence.So the study of smoke movement,temperature diffusion and emergency evacuation has important practical significance,when the hanger fired.As a new and innovative concept of architectural production based on the development of computer and information technology,Building Information Modeling is the direct reflection of building information.BIM integrate the data into the model through the establishment of digital building information,such as the construction of the project design,construction,decoration display,operation and maintenance,etc.At the same time,all kinds of people can use a variety of computer software from the BIM model to extract the required information for analysis in the building life cycle.Due to the various advantages of BIM,BIM in China’s development has become a trend which cannot be halted.In view of the fire evacuation experiment in the hangar in the real world being consuming large,long cycle,weak repetitive operation,and not easy to realize,so the computer is used to simulate.Because BIM can be used for building the whole life cycle,and has various advantages,so building the hangar information model based on the theory of BIM,then use computer to simulate the hangar fire smoke spreading,the temperature field of numerical diffusion and evacuation.The building information model of an airport hangar is established and divided into office area and maintenance area based on the building structure and the function of hangar.Because the hangar is completely symmetrical structure,so the side of simulated fire evacuation.First of all,the pyrosim software was used to set up the fire source of each region,to simulate the spread of flue gas and the temperature field under various fire scenarios,and to analyze and count the CO concentration and temperature with time.Then,using the Pathfinder software,the simulation of evacuation is carried out on the basis of the previous conclusions and fire scenarios.Finally it is the 3D demonstration.In order to put forward an innovative fireevacuation study method,which provides a new method for the hangar fire within the territory of China,evacuation test and emergency drills.