Study On Fire Evacuation In Shopping Malls Based On Social Force Model

With the development of society,people's demand for land resources is increasing day by day.In the current ground space resources under the conditions of tension,many cities began to build underground construction.Underground buildings in the rich use of space at the same time,also brought a lot of problems.Underground space closed environment,a single escape path,and a large number of personnel gathered,are likely to cause casualties and property damage.Second,the building evacuation exercise time-consuming and labor,can not often carry out a wide range of exercises.How to find a new method,both to meet the requirements of the exercise,but also found the lack of evacuation drills,is the safety of each underground building safety management focus.Therefore,this paper establishes a similar proportion of the building structure model in the computer,simulates the evacuation process and the flue gas diffusion process after the fire.Compared with the evacuation time and the time of evacuation,the analysis area of the evacuation process is safe Managers in the future emergency evacuation management to provide effective technical support.Based on the information base of Ximen Culture Square,this paper summarizes the characteristics of evacuation behavior and evacuation model and evacuation simulation software at home and abroad.After analyzing the internal situation of Xidan Culture Square,the most unfavorable point of the fire in the mall was calculated.By introducing the number and gender of the measured population in the AnyLogic software,and based on the social force model to establish geometric model,logical structure and auxiliary plug-in,write Java code,in the computer simulation to complete the Xidan Culture Square personnel evacuation process,must be evacuated Time,the dynamic evacuation density map and statistical chart are obtained,and the evacuation rules and characteristics of each layer are analyzed.Secondly,Fluent software is used to simulate the flue gas diffusion process after the fire in the mall.Can be used to evacuate the time;Finally,the two software to get the time to compare the analysis of one of the congested areas and the possibility of death.Finally,comparing the available evacuation time and the evacuation time of the congested area,we found that the flue gas concentration in the B1 layer 2 area,the B2 layer 1 region,the B2 layer 2 region and the B3 layer 3 area was the highest,And at the time of reaching the deadly dose,there are still persons who have not been evacuated to the safe area.