Study On The Export Flow Rate Of Competitive Intensive Personnel

If there is a dense crowd,improper management or unexpected events may cause major safety accidents due to crowd.Therefore,the export flow rate of competitive intensive personnel is one of the hot spots in competitive cluster kinematics.This building is 8 meters long × 4 meters wide × The room is 2 meters high and a series of experiments are carried out in it.By changing the personnel competitiveness,exit size and exit location,the flow rate under different competition intensity is explored.In this paper,the pedestrian time interval and total evacuation time are extracted and compared.Firstly,the evacuation characteristics under different competitive conditions were explored by controlling the exit width.54 volunteers were organized to carry out single room pedestrian evacuation experiments under different competitive conditions,and the influence of exit width on pedestrian evacuation was studied.The experiment mainly analyzes the total evacuation time and pedestrian evacuation flow rate.The results show that when the exit is in the middle of 0.6m,the average flow rates of low,medium and high competitive pedestrians are 1.47ped/m·s,1.25 ped/m·s and 1.22 ped/m·s respectively;when the exit is in the middle of 1.2m,the average flow rates of low and high competitive pedestrians are 1.29 ped/m·s and 1.71ped/m·s respectively.That is to say,the outlet flow rate decreases by 13.9% due to the increase of the gate width under low competition,and increases by 40.2% due to the increase of the gate width under high competition.Secondly,the influence of different exit positions on evacuation efficiency under different competition is studied,and the total pedestrian evacuation time and pedestrian evacuation flow rate are also analyzed.The results show that when the exit is located in the corner,the average flow rate of low and high competitive pedestrians is 1.73 ped/m·s and 1.96 ped/m·s respectively.That is to say,the flow rate of low and high competitive pedestrians increases by17.8% and 60.7% respectively due to the change of exit position.Changing the exit position can improve the pedestrian evacuation efficiency.It is found that when the exit is located in the middle,the efficiency of single room pedestrian evacuation is higher than that of pedestrian circulation evacuation.When the exit is located in the corner,the efficiency of pedestrian circulation evacuation is higher than that of pedestrian circulation evacuation.At the same time,it is found that when the exit is located in the middle and the width is 0.6m,the total evacuation time of pedestrians will increase with the increase of competition.This phenomenon verifies the "faster is slower" phenomenon found by Helbing et al.That is,the larger the expected escape speed is,the longer the overall evacuation time is.When the exit width is increased to 1.2m or the exit position corner,the total evacuation time of pedestrians will increase Time decreases with the increase of competition.Finally,through the summary and analysis,it is found that changing the exit position can avoid the phenomenon of "faster is slower",which can provide reference for evacuation strategy and architectural design,so as to reduce casualties.