Design Of Subway Operating Parameters Under Disease Transmission Environment Based On Simulation

With the development of industrial technology and the speeding up of city,the popularity of cars make more and more people become motorists,at the same time,the population urbanization give traffic pressure is more and more big,traffic congestion,environmental pollution,energy crisis and other issues are all affects people’s quality of life and living environment,even will threat to people’s life safety.The development of urbanization will never be limited by traffic congestion.As the most effective method to deal with urban traffic congestion at the present stage,public transportation has been developing rapidly.In the case of a major outbreak of the epidemic,the state is faced with the problem of resuming production and work,and it becomes very important to deal with the flow of people.Therefore,urban public transportation has the dual responsibility of guaranteeing travel and preventing the epidemic.Further research is needed to maintain the normal operation of urban rail transit stations on the basis of guaranteeing a certain social distance.The main research contents of this paper are as follows:(1)Firstly,the research background and research significance of this topic are discussed,and the practical effects of this topic are analyzed.Domestic and foreign literatures on disease transmission routes,infection mechanism and subway passenger flow simulation are summarized and sorted,and the research route of the whole article is determined.(2)Through on-the-spot investigation and study of the selected stations,determine the type of stations,and measure the length,width,height of the stations and the relevant infrastructure such as gates,security channels,self-service ticket machines and elevators;At the same time,the behavior of passengers at the stop is analyzed,which lays a foundation for determining the social spacing of pedestrians and conducting Any Logic simulation.(3)Through Fluent numerical simulation,evaporation curve,Langmuir formula,particle survival and attenuation formula,system evaluation and Meta analysis,the droplets propagation distance under three kinds of human respiratory activities was obtained.The relationship between temperature,relative humidity,particle survival time,particle size and particle propagation distance was obtained.The risk of infection at different social distances.Therefore,the simulated distance range of pedestrian social interaction was determined to be 1.2m to 2.0m,and 0.2m interval was substituted into Any Logic for simulation,and then the simulation experimental data was output.(4)Build Any Logic model,input the corresponding parameters,and get the simulated pedestrian density map.Combined with the 3D map,take the sequence of the generation of aggregation points or congestion points as the time node,analyze the causes one by one,and get the number of pedestrians getting on and leaving the station within 1 hour under the corresponding social distance.At the same time,it is also found that the common congestion points under the five social distances are the security check passageway near Exit 1 and 4,the entrance of the entrance gate and the middle stair of the station.When the social distances are 1.6m and 1.8m,the security check passageway near Exit 1 and 4 and the entrance of the entrance gate are the most congestionable.At the same time,it is also found that the short stop of pedestrians in and out of the station gate will reduce the distance between pedestrians to below the set safe distance.(5)for simulation in the process of gathering and congestion point,with the microphone,security doors and temperature detection,improve the escalator speed,extend the gate opening time measures such as optimizing the station infrastructure,this parameter will once again into the simulation,compared to modify ago simulation,eliminates the 1.2 m and 1.4 m converging point of the simulation under the social distance and congestion point,1.6 m to 2.0 m converging point of the simulation under the social distance and has been largely alleviate congestion point.Finally,combined with all the previous work,the corresponding countermeasures for the subway station operation are put forward.This paper has 88 figures,7 tables,and 57 references...