Research On Fire Emergency Evacuation Simulation Of Subway Station Based On Pathfinder

With the continuous development of urbanization in our country, traffic problem in cityis increasingly serious. The subway becomes the best way to improve the traffic structure andtraffic congestion, because its advantages, such as safety, quick, comfortable, low energyconsumption and so on. At the same time, rising subway construction and operation bringswith many urgent security issues, especially security issues caused by frequent and pestilentfire accidents. At present, a variety of methods have been used to study emergency evacuationof subway station under fire by scholars at home and abroad, however, the existing researchresults cannot achieve the desired effect in solving practical problems, and most cities withsubway also have not formed efficient emergency management system of subway fire yet.Therefore, it is urgent and necessary to study emergency evacuation of subway station firedeeply.A mass of essential data about evacuees are collected by looking up pertinent literature,such as bodily characteristics, walking characteristics and behavioral response characteristics.Go a step further, the fire safety hidden troubles, fire behavior and evacuees behavior in a fireevacuation process are analyzed detailedly, and the influencing factors of a fire emergencyevacuation process of subway station are also discussed deeply from subjective and objectiverespectively. On the basis of detailed theory research, the simulation environment of subwaystation structure and personal traits are built based on the background of an actual subwaystation, and then, fire emergency evacuation of subway station under the different conditionsis simulated by Pathfinder.The results of simulated evacuation under the different condition show that there is aserious congestion queuing phenomenon at each evacuation exits during the peak time.Combined with evacuees features, the structure of subway station plays a greater influence ona fire emergency evacuation process. During the flat peak, the congestion queuingphenomenon of each evacuation exits is weakened, and structure of subway station plays agreat influence on a fire emergency evacuation process as well as evacuees features. Almostthere is no congestion queuing phenomenon at each evacuation exits during the low peak, andevacuees features plays a greater influence on a fire emergency evacuation process thanstructure of subway station. Besides, at any period of passenger flow, there is a strongerindependent selective of evacuees when young and middle-aged men are in the majority, andthere are maximum evacuees to choose farther evacuation exit C. Whereas when young andmiddle-aged women are in the majority, there are a higher trafficability of each evacuationexits, stronger evacuation capability of evacuees and the shortest evacuation time due to fasterspeed and smaller pedestrian occupancy space of evacuees. At last, the emergency evacuation process of subway station under the differentcondition are emulated through reflecting as much as possible influencing factors on speed ofevacuees quantificationally by using multi-stress that is put forward in this paper. It turnedout that the more influencing factors can be considered by multi-stress, the more practicalthe evacuation process is, and the more reliable the evacuation results are.