Joint Simulation Of Fire Evacuation Based On Behavioral Psychology

The psychological characteristics of panic emotion and cognitive deviation significantly affect evacuation efficiency.The evacuation behavior of people is influenced by age,gender,cognitive ability and fire environment,which shows great differences.High rise building fire poses a great threat to human life and property,and effective evacuation can minimize the loss.At present,the evacuation design of high-rise buildings lacks the psychological characteristics of people and their influence in this special environment.On the basis of the study of evacuation passage of buildings,the effects of psychological and physiological characteristics on evacuation efficiency can be effectively improved.In this study,the fuzzy logic theory is introduced into fire evacuation,and the abstract psychological characteristics are quantified as concrete behaviors.According to the questionnaire survey,the theoretical domain,fuzzy set and membership function of each influencing factors are established,and the corresponding fuzzy rules are set up.Then a fuzzy algorithm is obtained to describe the mathematical relationship between psychology and behavior,so as to study the influence of psychological factors on initial speed;Considering the influence of smoke on evacuation,the paper puts forward the concept of velocity reduction and quantifies the change of people’s velocity under the influence of smoke in the fire field.Through the numerical analysis of smoke in the fire of high-rise buildings,the smoke data of the adjacent floors of the ignition point are obtained,and the speed discount and impairment of personnel at different time and place are calculated;Taking fire evacuation of a high-rise commercial building as an example,building model and personnel layout are established according to the survey data.The initial speed,speed reduction and group behavior of personnel under psychological environmental factors are introduced into the analysis.The analysis results are compared with the general evacuation results without considering psychological environmental factors.The results show that the evacuation completion time considering psychological environmental factors is 670 s,which is increased by 200 s compared with 470 s of ordinary evacuation,and the overall evacuation efficiency is reduced.Considering the psychological environmental factors,evacuation is a further study of fire evacuation,improving the authenticity of evacuation research,and providing reference for the future multiple factors evacuation research.