Facility Allocation Of Subway Station Based On Vulnerability Analysis

At present,the discussion on the subway vulnerability mainly focuses on the safety and reliability of the operation.The case study method,complex network theories as well as assessment of the indicators are usually used to describe vulnerability which is relatively static and lacks a comprehensive evaluation framework.The research on facilities allocation is mainly based on the rough analysis of subway station environment and characteristics of terrosrism.It is of great significance to improve the safety and stability of the subway network system to ensure the safety of people's lives and property and to promote social harmony and stability.Based on the subway station topology and passenger flow,this study does a further study in combination with the equipment configuration of subway stations.This article focuses on the following issues:1)The subway system is modeled as a complex network model,with the analysis of network structure,find out key stations which have important influence on the whole network.2)Take several subway station as example,using Poisson distribution model to simulate passenger flow to show the social vulnerability at different times of the day.3)As security plays an important role in anti-disaster,and it can directly detect whether passengers carry dangerous goods.In this paper,we select the East Nanjing Road Station with higher vulnerability and calculate the number of security check desks may be needed in different time based on the fitting of the passenger flow.And a sensitivity analysis is done to discuss how service efficiency,and other Parameters affect the the demand for security check.Following two conclusions are put forward: 1)The temporal and spatial distribution of site vulnerability is presented based on topological structure analysis and passenger flow sub-period fitting.Since the terrorist events occur frequently during the passenger peak time and usually chose the site of important location,under the multiple overlapping vulnerability,serious consequences may be caused,so the safety compensation factors' allocation should be consistent with the key sites and peak time.2)This paper believes passengers carrying items must be checked by security.It can be found that the number of security check desks in East Nanjing Road Station can not satisfy security needs based on the analysis of the time distribution of passenger flow and service efficiency.The subway station security service area planning and service desk settings should be in accordance with distribution of passenger flow.This wiil help meet the security needs of passengers at different times and also improve the utilization rate of facilities.