Research On Optimal Design Of Fire Evacuation For Underground Commercial Buildings Based On Evacuation Behavior

With the rapid development of economy and society,urban land becomes more and more tense,and the development and utilization of underground space has become an effective way to solve the shortage of urban land resources.With the development and construction of large-scale,integrated urban underground space,the hidden danger of underground space has gradually exposed,and caused great concern of the community.Underground commercial buildings in the special space structure,personnel intensive,high risk of fire,rescue difficult,so its fire evacuation safety is particularly important.Once the fire,how to quickly evacuate the underground space,is an effective guarantee for the safety of life and property,reduce the impact of fire.In this paper,the underground commercial building as the research object,the psychological and behavior of staff building fire situation as the research foundation,to building evacuation factors as the research basis,the underground commercial building evacuation design of optimization design based on the behavior of people.This paper is divided into 6 chapters,respectively introduces the background and significance of the research,summarizes the environmental behavior,safety behavior science,construction safety evaluation system,the domestic research status in the evacuation of outsiders behavior are summarized from two aspects and the related factors affecting the evacuation of the building will summarize screening,evacuation study on optimization design of underground commercial buildings according to the selected factor.The main contents of this paper are as follows: firstly,the influence factors of evacuation and evacuation are determined.Through the discussion on the topic of the total evacuation impact factor as well as the related literature summary,this article on people and the related factors affecting the evacuation of the building are summarized,and the structural equation model for correlation factor and evacuation level between the quantitative analysis.The factor of large correlation degree is obtained as the basis of Evacuation Optimization design.Secondly,through the three aspects of the design of the building layout,evacuation path,environmental identification.By using the social force model,based on the domestic and foreign related standards,the evacuation width,the evacuation staircase width and the connection between primary and secondary channels are verified.Finally,the qualitative and quantitative optimization strategy of evacuation design is obtained.After optimization of the design of evacuation in underground commercial building,firstly,analyzed and summed up the underground commercial building shown in case of fire evacuation design,provide the basic data for the development and utilization of underground space in the future practice of underground commercial buildings and other forms.Secondly,the introduction of human behavior factors in the evacuation design,can effectively improve the current situation of China’s underground commercial building in the evacuation design,but also for the performance-based fire protection design to lay the theoretical foundation.Finally,as part of the natural science fund,I played a connecting role.The last part of this paper makes a deeper analysis of the evacuation factors,and provides a reference and basis for the next part of the building evacuation design.