基于对数正态分布的城市轨道交通差异化安检效率评估  

Evaluation of differentiated security check efficiency of urban rail transit based on lognormal distribution

作　　者：宋晓 马卫东 张宁[1] 温龙辉 刘家俊[1] SONG Xiao;MA Weidong;ZHANG Ning;WEN Longhui;LIU Jiajun(Institute of Rail Transit,ITS Engineering Research Center,Southeast University,Nanjing 211189,China;Beijing Metro Operation Co.,Ltd.,Beijing 100044,China)

机构地区：[1]东南大学ITS工程研究中心城市轨道交通研究所,江苏南京211189 [2]北京市地铁运营有限公司,北京100044

出　　处：《大连理工大学学报》2023年第6期656-660,共5页Journal of Dalian University of Technology

基　　金：国家重点研发计划资助项目(2020YFB1600701).

摘　　要：针对城市轨道交通传统安检模式下乘客进站排队时间长、通行效率低等问题,提出一种差异化安检新模式.采用对数正态分布模型对安检时间进行拟合,计算传统安检与差异化安检2种模式下概率分布函数95%置信区间对应的安检时间,进而确定通行效率的提升率,从而实现对差异化安检效率的评估.以南京地铁某站早高峰、平峰和晚高峰3个时段2种安检模式下携带小包乘客的安检时间数据为例,可知执行小包不检、大包安检的条件下安检效率提升61.9%.差异化安检模式可明显提升车站安检效率,提高运营服务水平,在业内具有积极意义.A new differentiated security check mode is proposed to solve the problems of long queuing time and low traffic efficiency of passenger entry in the traditional security check mode of urban rail transit.The security check time corresponding to the 95%confidence interval of the probability distribution function in the traditional and differentiated security check modes is fitted and calculated based on the lognormal distribution model.Then,the improvement of the traffic efficiency is determined,and the differentiated security check efficiency is evaluated.The security check time data of passengers carrying small packages in a Nanjing Metro station during the morning,off-peak and evening are taken as an example,it is known that the security check efficiency increases by 61.9%under the conditions of small bags without and large bags with security checks.The differentiated security check mode can significantly improve the efficiency of station security checks and the operation service level,which has a positive significance for promotion in the industry.

关 键 词：城市轨道交通 差异化安检 对数正态分布 效率评估 

分 类 号：U231[交通运输工程—道路与铁道工程]