Research On Fire Emergency Evacuation Of Large Commercial Buildings Based On Path Optimization

In recent years,various large-scale commercial complexes with large volume,wide area and large building span have sprung up in every corner of the city.These large-scale commercial buildings not only bring great convenience to our life,but also make the indoor emergency evacuation more difficult.At present,most of the emergency evacuation signs in buildings are only set according to the requirements of the specification,pointing to the direction of the nearest emergency exit.There are still deficiencies in the path optimization problem.The lack of dynamic application of emergency evacuation leads to the unsatisfactory efficiency of emergency evacuation and unnecessary casualties.Therefore,this paper studies the fire emergency management of large commercial buildings based on path optimization,combined with the dynamic evacuation indication system,to improve the efficiency of emergency evacuation.In this paper,the application of building Exodus software,from the two perspectives of fire and other emergencies(Scene 1～ Scene 3)and no fire(Scene 4 ～ Scene 6),respectively uses the static emergency evacuation system(Scene 1 and Scene 4),uses the static evacuation system after optimizing the evacuation path(Scene 2 and Scene 5)and uses the static emergency evacuation system after optimizing the evacuation path After optimization,the evacuation situation of the intelligent emergency evacuation system(Scene 3 and scene 6)was compared.Through the evacuation simulation without fire,the evacuation efficiency of scenario 2is improved by 14.7% compared with scenario 1,and the evacuation efficiency of scenario 3is improved by 10% compared with scenario 2.In the case of fire,the evacuation efficiency of scenario 4 is 31.9% higher than that of scenario 5,and that of scenario 6 is 22.7% higher than that of scenario 5.It can be seen that the evacuation efficiency of large commercial places is significantly improved after the optimization of evacuation path;the evacuation efficiency of intelligent emergency evacuation system is higher after the optimization of evacuation path;the effect of path optimization to improve the evacuation efficiency is more obvious in case of fire and other emergencies.Finally,the effectiveness of optimization of emergency evacuation path in large commercial places is verified,which provides reference for future architectural designers and has certain practical significance.