Study On Pedestrian Flow Characteristics And Traffic Prediction Of Urban Rail Transit Transfer Station

Urban rail transit has developed rapidly due to its large capacity,fast speed,low energy consumption,less pollution,good comfort and land saving.Most of the rail transit interchange stations are in underground closed space.The underground is buried deep and the flow of people is dense.When an earthquake or fire or other emergency occurs,the evacuation of personnel will bring threats to passengers' lives and property,causing serious social impact..The related research on the safe evacuation of passengers at the transfer station and the characteristics of pedestrian flow is an important research direction in the field of safety engineering.The paper studies the pedestrian flow characteristics and human flow forecast of urban rail transit transfer stations,and plays an important role in the formulation of personnel evacuation strategies in emergency situations,existing station reconstruction and performance analysis.The author summarizes the domestic and foreign scholars' research on the transfer form and classification characteristics of transfer stations,and summarizes the research on pedestrian movement characteristics and human flow forecast in domestic and foreign transfer stations.The classification of urban rail transit transfer stations and the corresponding architectural features and the layout characteristics of pedestrian facilities inside the transfer station are briefly introduced.The questionnaire was designed by summarizing the transfer type and facility layout characteristics of Chongqing urban rail transit transfer station.Understand passengers' perceptions of transfer stations,transfer satisfaction,and factors that affect passenger transfers.The video method is used to observe the pedestrian flow movement and the distribution of human flow at the transfer station.The author studied the flow density at the transfer station of the transfer station,the walking speed of the personnel and the distribution of personnel in the transfer station through the video method.According to the analysis of the video results,the greater the flow density,the slower the walking speed;conversely,when the flow density is small,the walking speed is relatively increased.And the function relationship between the flow density and the walking speed and the distribution law of the human flow are obtained.On this basis,the factors affecting the walking speed of the personnel are analyzed,mainly: the width and height of the escalator in the station and the number of use,the width and length of the transfer passage,the basic characteristics of the personnel,the gender,the age and the size of the baggage.In addition,the author also discusses the forecast of hourly traffic,and proposes a model of hourly flow forecasting method in urban rail transit transfer station and its applicable range.