Multi-zone Simulation Of Fire Characteristic In Integrated Office Buildings

Nowadays,there are two kinds of experimental methods and computer simulation methods to study the building fire characteristics.The fire characteristics of a large number of integrated office buildings studied by researchers in the past are based on the traditional structure of reinforced concrete.With the continuous progress of social science and technology,a large number of structure forms about reflection glass curtainwall have been adopted by more and more outerbuilding envelope on integrated office building in big cities.At present,there is still a lack of multi-region simulation research on the indoor fire characteristics of the glass enclosed structure of the integrated office building.The integrated office building not only includes the office and other workplaces,often there is a similar mall showroom on the first floor of the integrated office building or the first few floors;this form of personnel density,in the event of a fire,will result in incalculable staff safety and property damage.Therefore,it is necessary to study the fire characteristics of the multi-zone in integrated office building whose outerbuilding envelope is in the form of glass.This article is mainly through numerical simulation software to study the multi-area fire characteristics of the integrated office building;the first is the use of regional simulation software to establish a physical model of the integrated office building with the actual match,then the outerbuilding envelope of the integrated office building is set to the structural properties of glass,the simulation and comparative analysis of multi-area fire characteristics of complex office buildings based on different fire sources and structural conditions.The specific content of this study and related conclusions are as follows:(1)For the case of the rate of increase of the rate of heat release from the source of fire,the rate of increase of the rate of heat release from the three different sources during the entire process is not significantly different from the hazard of fire to the personnel in the vicinity and the distance from the integrated office corridor,The same is true for the three cases.In addition to slightly higher concentrations of CO in the gas,the three sources of ignition may result in minor poisoning of personnel,and the flue gas temperature and other product concentration factors are less harmful to the human body.(2)For different locations of fire sources,when the fire sources are set at different positions in the same compartment,the danger to personnel in the top compartment of the integrated office building is almost the same,there is no difference;when the fire source is set at different positions in different compartments,The closer the fire source is from the top compartment,the higher the risk of the compartment is and the greater the danger to personnel.(3)When the fire source is set on the ground floor,the impact on the ground floor room is greater when the fire source is set on the floor and the upper room of different floors.When the fire source is set on the top floor,the impact on the roof room is greater.This shows that the principle of danger is the principle of near fire.In addition,the law applies to different types of combustibles.(4)For the typical open situation impact on the fire characteristics of the integrated office building compartment,the greater the open area of the window side,the higher the risk of fire in the compartment,regardless of whether the fire source is a large fire source or a small fire source;Fire source is a large fire source or a small fire source,within a certain range,the smaller the opening area of the ceiling,the higher the risk of fire in the compartment;No matter the fire source is a large fire source or a small fire source,within a certain range,the location of different roof openings to the fire risk in the compartment is almost invariable.