Research On Optimized Layout Of Service Facilities In Rail Transit Stations Considering Pedestrian Flow

Urban rail transit stations are responsible for gathering and distributing large-scale people.The internal service facilities are the interface for passengers to directly contact,and redesigning is a waste of time,money and resources.Therefore,the reasonable layout of service facilities has important practical significance.In the current design process of urban rail transit stations,security check facilities are rarely considered,but the reality is that the bottleneck of service facilities inside urban rail transit stations has been shifted from ticket sales facilities to security check facilities.In addition,most of them focus on one of the location and number of pedestrian flow lines.On this basis,this article focuses on the linkage between security inspection facilities and other service facilities,considering the configuration of various service facilities,considering a complete pedestrian flow line,and performing simultaneous optimization of locations and numbers.The main contents of this article are as follows:(1)Analysis of service facilities layout of rail transit stations.Summarize the characteristics of pass-through facilities and waiting facilities of rail transit stations,analyze passenger flow characteristics from both micro and macro perspectives.In addition,pay attention to the balance between efficiency and effectiveness,determine the costs related to the optimal layout of facilities,and provide a basis for the pedestrian flow network system.Prepare to build.(2)The concept of optimizing the pedestrian flow network for the whole process is introduced,from the local configuration of service facilities to the regional flow line of passenger flow.Based on this,different station service facilities configuration plans are obtained,and complete descriptions are given Expression of pedestrian flow lines.(3)Construct an optimal layout model of rail transit station service facilities.Consider the related costs of facility configuration as the objective function,that is,the fixed cost of the facility,the operating cost of the station,and the cost of passenger time,and use the location of the service facility,the number of service facilities,and the capacity of the service facility as constraints to construct an optimization model with the lowest cost.Among them,the position considers the absolute position constraint and the relative position constraint.The absolute position constraint refers to the physical construction limit of the facility,and the relative position constraint refers to the reserved service distance between the facilities.Based on this,a genetic algorithm is designed to solve the model.(4)Select the example station,use Matlab to implement the algorithm and propose an optimal configuration plan,use Anylogic simulation platform to simulate and compare the facility configuration plan before and after optimization,and select service level and travel time as the service facility evaluation criteria.After outputting the relevant data graphs,the results are analyzed to obtain the final effect of different station service facility configuration schemes,thereby verifying the effectiveness of the model.The results show that the model optimization effect is stable and the applicability is good.The research results of this paper are more in line with the actual station facility configuration,and can be used as an improvement basis for station facility configuration design schemes,providing ideas and references for the construction and operation of urban rail transit station facility configuration in reality.