Study On Walking Space Evaluation And Optimization Strategy Of Rail Transit Station Based On Traffic Efficiency

Urban rail transit is one of the effective measures to solve traffic problems and urban diseases,and it plays an important role in urban development.However,at present,many rail transit stations with large passenger flow have the problems of space congestion,disorder and low efficiency.And the site "implantation" makes the walking space load doubling,with the problems of difficult access and poor walking environment.Whether these problems can be solved and the pedestrian traffic efficiency can be improved will directly affect the people’s choice of travel modes.The existing studies on the walking space of the rail transit station mainly start from two scales.One type starts from the perspective of architectural design,and mainly focuses on the interior of the station itself.Another kind of research from the perspective of planning and design,pays attention to walking space environment outside the site,but ingores the entire course of pedestrian travel out of vehicle.In view of the above problems,pedestrian micro simulation method is proposed in this paper,which unifies the "inside" and "outside" of rail transit station.And the influence factors of walking environment and pedestrian flow are considered in the study on the efficiency of walking space access.This paper uses the card data and the POI information of the surrounding areas in Shenzhen metro stations,taking the subway station of Shenzhen University as a case site.A detailed investigation and construction of the simulation model are also carried out.A walk space evaluation method based on traffic efficiency is proposed.Quantify the efficiency of walking space in different regions through the simulation of pedestrian walking in the pedestrian space behavior and summarize the existing problems in space.Analysis of space elements that affect the efficiency of walking.On this basis,a number of optimization strategies are proposed for the pedestrian space of the rail transit station,including reasonable spatial scale control and spatial configuration,selection and optimization of spatial interface,continuity of walking space and layout and quantity control of various facilities in space.According to the different causes of the problem,different optimization strategies are used to adjust the case site to the space transformation.This paper also reconstructs the model and simulates it again.Also compares the efficiency of pedestrian space before and after the transformation to realize the scientific test of optimization strategy.Finally,some suggestions and suggestions for the planningand design of the subway station and its surrounding pedestrian space in the future are put forward.