基于界壳论的高速公路系统脆性研究  

Study on Brittleness of Expressway System Based on Shell Theory

作　　者：王花兰[1] 张森 WANG Hua-lan;ZHANG Sen(School of Traffic and Transportation,Lanzhou Jiaotong University,Lanzhou 730070,China;Xuzhou Technical College,Xuzhou 221000,Jiangsu,China)

机构地区：[1]兰州交通大学交通运输学院,兰州730070 [2]徐州技师学院,江苏徐州221000

出　　处：《兰州交通大学学报》2019年第5期35-41,共7页Journal of Lanzhou Jiaotong University

基　　金：国家自然科学基金(51468035)

摘　　要：运用界壳论和复杂系统脆性理论,分析了高速公路系统界壳构成以及人、车辆、道路、环境等子界壳的界壳元素;定义了界壳防御功能参数,给出了各参数的表达函数.研究了界壳脆性防御参数变化与高速公路系统正常运行、系统脆性激发与系统崩溃等状态之间的关系.选取西部地区X绕城高速公路部分路段为例,计算了2019年1月份、3月份界壳脆性防御参数,分析了系统该时段的运行状态.结果表明,实例路段在1月份、3月份运行均为正常状态,但1月份界壳脆性防御参数明显差于3月份,且关键子界壳的脆性等级为Ⅳ级,处于崩溃边缘.违章驾驶、不良天气以及大型车数量是影响X绕城高速系统正常运行的关键因素.实例说明界壳脆性防御参数的变化可客观反映高速公路系统受到内外界因素扰动后的运行规律,帮助辨识系统脆性激发的脆性源.By using the shell theory and the complex system brittleness theory,the expressway shell and some sub-shell components including persons,vehicles,roads and environment are analyzed.The brittleness defense parameters of the system shell are defined.The expression function of each parameter is given.The relationship between the brittleness defense parameters and three operation states of the expressway system including good running,brittleness motivated and system collapsed is explored.Taking the sections of X expressway around the city in west region as an example,the brittleness defense parameters in January and March,2019 are calculated,and the system operation state in this period is analyzed.The results show the system operation state is normal in January and March,but all the brittleness defense parameters in January are obviously weaker than in March,and the brittleness grade of the key sub-shell in January is Ⅳ,which is on the edge of collapse.Illegal driving,bad weather and the number of large vehicles are the key factors that affect the normal operation of the expressway system around the city.The example indicates that the change of brittleness defense parameters can objectively reflect the expressway system operation rules disturbed by internal and external factors,and help to identify the brittle origin of the system motivated by brittleness.

关 键 词：界壳 脆性 高速公路系统 脆性防御参数 

分 类 号：U491.1[交通运输工程—交通运输规划与管理]