摘要
为了评价地铁车站系统的脆弱性,研究了地铁车站系统脆弱性评价的计算方法,确定了地铁车站系统的脆弱性评价指标体系并提出了基于Petri网的地铁车站系统脆弱性评价模型。根据各个子系统的工作运行过程,分析并确定子系统的脆弱性评价指标,通过确定的脆弱性评价指标构建各个子系统的脆弱性评价模型,考虑子系统之间的相关性原则,整合得到地铁车站系统的脆弱性评价模型。通过脆弱性影响因素对系统脆弱性水平的影响方式,确定脆弱性水平的计算方法。案例表明,该地铁车站的脆弱性水平一直保持缓慢增长的状态,脆弱度从1.638 6增长至37.137 0。该地铁车站系统中脆弱度较高的影响因素为冷水机组、乘车码的获取、开关控制模块、输出模块和控制中心通讯系统;冷水机组占空调与通风系统脆弱度的26.45%;乘车码的获取占自动售检票系统的42.17%;开关控制模块和输出模块分别占通信与广播系统脆弱度的31.47%和35.83%;控制中心通讯系统占设备与环境监控系统脆弱度的72.42%。通风与空调系统、自动售检票系统、供电系统、通讯与广播系统和设备与环境监控系统分别占车站系统脆弱度的23.14%,20.44%,23.85%,23.29%和9.28%。
In order to evaluate vulnerability of subway station system,a calculation method of it is studied,and a vulnerability index system is determined,then a model is proposed based on Petri net. According to working process of each subsystem,the vulnerability evaluation index of each subsystem is analyzed and determined. Then the vulnerability evaluation model of each subsystem is constructed. Considering the principle of correlation among subsystems,the model is integrated. A method of calculating level of vulnerability is determined by the way in which the influence factors of vulnerability affect the system. A case study shows that the level of vulnerability of an actual subway station grows slowly,from 1.638 6 to 37.137 0. The influence factors affecting the high level of vulnerability are water-cooled chillers,acquisition of riding code,switch control module,output module,and process unit controller. In the subway station system,the factors of high vulnerability are water-cooled chillers,acquisition of riding code,switch control module,output module,and communication system of control center. Water-cooled chillers accounts for 26.45% of the vulnerability of air conditioning and ventilation system;acquisition of riding code accounts for 42.17% of the vulnerability of automatic fare collection system;switch control module and output module account for 31.47% and35.83% of the vulnerability of communication and broadcasting system. The communication system of control center accounts for 72.42% of the vulnerability of equipment and environmental monitoring system. Air conditioning and ventilation system,automatic fare collection system,power supply system,communication and broadcasting system,and building automation system account for 23.14%,20.44%,23.85%,23.29%,and 9.28% of the station system vulnerability,respectively.
作者
陆秋琴
武晓晓
黄光球
LU Qiuqin;WU Xiaoxiao;HUANG Guangqiu(School of Management,Xi'an University of Architecture and Technology,Xi'an 710055,China)
出处
《交通信息与安全》
CSCD
北大核心
2020年第1期52-60,共9页
Journal of Transport Information and Safety
基金
国家自然科学基金项目(71874134)
陕西省社会科学基金项目(2018S49)资助。
关键词
城市交通
地铁车站
脆弱性评价模型
PETRI网
urban transportation
subway station
vulnerability evaluation model
Petri net
作者简介
第一作者/通信作者:陆秋琴(1966-),博士,教授.研究方向:安全工程、工业工程等.E-mail:luqiuqin@xauat.edu.cn。
