Modeling And Simulation Study Of Emergency Evacuation Model For Passenger Ships

Water transport has the characteristics of large transport capacity,small pollution,low freight and high efficiency,It has gradually become an integral part of transportation.But while the sea transport brings benefits to countries,it also brings security risks to people’s lives and property.For the large passenger ships,each deck has multiple exits.It is worth studying how to make a reasonable exit for the evacuation crowd in the shortest time.This paper studies the behavior factors of pedestrians in the sea evacuation,considers the export selection factors on the basis of the social force model,and studies the ship evacuation model under the rolling state.This paper firstly introduces the traditional social forces model,pointing out the shortcomings of the traditional social force model in ship evacuation.Secondly,based on the particularity of Marine evacuation middleman-ship environment,considering the influence of ship tilt to pedestrians force,rolling motion of the ship to pedestrians speed will also have a certain degree of restriction,aiming at the particularity of ship motion to improve the traditional social force model.Thirdly,the export selection model is established based on the three key factors which affect the choice of pedestrian export:the width of the outlet,the distance and the pedestrian density.The revised model of social force model,export selection model and evacuation speed model in rolling state are integrated,and an evacuation simulation model is established to consider the exit selection in the rolling state.Finally,the simulation model,in view of the rolling condition did not consider export factors and consider the factors of evacuation simulation comparison research,comparison shows that export factors of evacuation simulation results in effective reduced congestion,the phenomena of reducing the evacuation time,improve the efficiency of the evacuation.The simulation results of this paper also show that the evacuation simulation model considering the export choice in the roll state effectively balance the evacuation pedestrians with multiple exports,and then realize the dynamic optimization of evacuation.