Fire Dynamics And Evacuation Model-based Study Of The Fire Evacuation

Building fires,in addition to causing enormous property losses,and also the safety of building a serious threat.Contemporary science and technology,new materials and new structure,an endless stream of new equipment,followed by high-rise buildings,large buildings,such as underground construction,its technical complexity of the density and losing,so building personnel security issues have become increasingly prominent.The existing fire safety norms,the evacuation of the provisions have been far from enough to meet the demand for new construction.In recent years,many scholars make use of performance-based building fire safety design method of building fires studied the problems encountered,the use of computer simulation of fire and evacuation of personnel to carry out detailed analysis.Large and complex as a result of the emergence of a new type of construction,we must take into account the following simulation of evacuation of the impact of:1, high-density crowded conditions;2,with the evacuation of the reaction time and choice of export routes for personnel associated with decision-making process.In recent years,research has become a crowd dispersal of international security studies at a new hot spot,at home and abroad have developed a variety of computer software to carry out fire evacuation simulation.However,these models usually fire evacuation exercise and the development of the two processes are considered separately,the simulation software and its underlying model of the actual situation with the differences still exist in larger,mainly because the software is still the basis of the model does not take into account the fire personnel decision-making process,as well as the role of the fire environment in real-time behavior of the staff,which is in the fire evacuation model based on a key part.Secondly,a clear evacuation of randomness,but the current study the use of uncertainty analysis methods.Therefore,we need to build a model that will be the development of fire evacuation process and the combination of research,through the fire to the role of evacuation to find the building fire evacuation movement of personnel.In this paper,the theory of the evacuation analysis and research,using the latest development of FDS+Evac software building fire evacuation behavior in the situation at the different simulation studies were compared,and for some of its limitations optimization.In this paper,are as follows:(A) in the FDS+Evac for evacuation based on the theoretical analysis of its shortcomings and limitations,the reaction time of the evacuation and the behavior of people to carry out further discussion,the evacuation of key personnel to evacuate the reaction time,the use of fuzzy mathematics theory based on fuzzy prediction;(B) the use of FDS+Evac software research group size and density of the double staff evacuation under the influence of the characteristics of summing up the time and staff to evacuate a function of the relationship between the density;(C) the use of FDS+Evac software simulation study comparing the situation in the absence of fire conditions and fire evacuation rules and the characteristics of the export options,analysis of different situations caused the evacuation of the factors favorable or harmful.