Study On Influence Of Property Of Evacuation Route On Safety Evacuation

In order to improve the evacuation efficiency,reduce the fire and other emergency evacuation personnel must time,reduce unnecessary loss of property and casualties in the building,in reference to the social force model of force in the idea of a more detailed analysis of the personnel evacuation process,simulation of evacuation of personnel under different personnel density different exit positions,different corridor structure and display different obstacles with Pathfinder simulation software.Through the comparative analysis of evacuation simulation results and 3D animation and function graph,illustrates the best position of the exit of single exit building,the best position of double exit building with two exits layout the same side wall and with two exits layout the adjacent side wall and with two exits layout the side wall,put forward the concrete formula;obtain the relationship between the evacuation time and the width of the corridor is the inverse proportion function image under different personnel density,determine building corridor have a certain width of the critical value,we should ensure that the corridor width is not less than the width of the critical value;obtained the relationship between the evacuation time and the angle of the corner of the corridor under different personnel density,when the personnel density is large,90° corner is very big impact on the evacuation efficiency,to the disadvantage of the personnel evacuation of the right angle corner when the personnel density is large,put forward a reference scheme for the design of corridor corner,set to medial corner "two horns shaped";obtained the relationship between the evacuation time and building barrier distance exit distance under different personnel density,determine from barrier of buildings to the exits have a certain distance of the critical value,when the obstacle is outside the critical distance,will not have an impact on the evacuation efficiency,moreover,when in the critical distance value reasonable to put obstacles can also be conducive to personnel evacuation,reduce the evacuation pressure at the exit;under different personnel density the building width of the obstacle is larger,the greater impact on the efficiency of personnel evacuation,however,the impact of the width of obstacles on the evacuation efficiency less than the impact of the distance from barrier of buildings to the exits on the evacuation efficiency.It can provide a reference for the performance of the building’s evacuation passage,it can also provide theoretical basis for risk analysis and control and emergency management.