基于界壳论的高速公路系统脆性研究

发布时间：2018-04-12 18:50

本文选题：界壳论 + 高速公路系统　；参考：《兰州交通大学》2015年硕士论文

【摘要】：随着高速公路运营里程的持续增加,日益增大的交通需求与交通安全的矛盾日益尖锐,致使高速公路重特大交通事故频发。脆性是复杂系统的一个基本特性,即当系统的某一子系统受到一定程度的内外干扰时,将失去原有的正常功能发生崩溃。高速公路系统遭受一定程度的内外干扰极易引发交通事故,导致部分子系统崩溃,甚至丧失正常功能。因此高速公路突发事故实际是高速公路系统脆性被激发的体现。高速公路的实体界壳与模糊界壳共同构成高速公路系统的多维界壳,维护高速公路系统的正常运行,实现系统与外界的有序交换。本文从高速公路系统事故出发,基于界壳理论以及脆性理论对高速公路系统脆性进行研究。概括起来有以下几方面:(1)分析了复杂系统及高速公路系统的脆性,研究了熵理论基础,分析了受到崩溃子系统影响的子系统若要从所受到的干扰中恢复,须依靠外界负熵的进入,即依靠高速公路系统界壳的卫护与交换作用,引入负熵流,抵消本身熵值增加,努力消除高速公路系统面临崩溃的危险,阐释了运用界壳论对脆性进行深入研究的合理性。(2)通过对界壳理论的清晰理解,论证了高速公路实体界壳以及模糊界壳的真实存在,对实体界壳参数进行研究,明确了高速公路系统多维界壳的卫护及交换原理。结合热力学第二定律及脆性理论,论证了高速公路系统内部的熵增是对内部有序结构的摧毁过程,而界壳的存在力图阻止这一摧毁,且通过界门输入负熵,对抗高速公路系统脆性作用,阻止脆性被激发。(3)从高速公路系统突发事故出发,建立了高速公路系统突发事故脆性模型,研究了脆性结构,明确了脆性因素对系统的作用机理,确立了脆弱等级划分原则。通过对高速公路系统突发事故影响因素分析,基于突发事故建立高速公路系统脆性防御界壳模型。将模型参数作为量化指标,结合实例,通过参数量化对实例脆性激发防御现状进行对比分析,找出了主脆性因素,从根源上加固防御界壳,为高速公路安全管理指明方向。
[Abstract]:With the continuous increase of highway mileage, the contradiction between the increasing traffic demand and traffic safety is becoming increasingly sharp, resulting in the frequent occurrence of serious and serious traffic accidents.Brittleness is a basic characteristic of a complex system, that is, when a subsystem of the system is disturbed by some degree of internal and external interference, it will lose its original normal function and collapse.Expressway system suffers a certain degree of internal and external interference easily lead to traffic accidents, leading to the collapse of some subsystems, or even loss of normal functions.Therefore, the sudden accident of expressway is the embodiment of the brittleness of expressway system.The entity boundary shell and the fuzzy boundary shell of the expressway constitute the multi-dimensional boundary shell of the expressway system, maintain the normal operation of the expressway system, and realize the orderly exchange between the system and the outside world.Based on the theory of boundary shell and brittleness, the brittleness of expressway system is studied in this paper.In this paper, we analyze the brittleness of complex system and expressway system, study the basis of entropy theory, and analyze that the subsystem affected by collapse subsystem should recover from the disturbance.It is necessary to rely on the entry of external negative entropy, that is, relying on the protection and exchange of the shell of the expressway system, introducing the negative entropy flow to counteract the increase of its own entropy value, and making efforts to eliminate the danger of the expressway system facing collapse.This paper explains the rationality of further study on brittleness by using the theory of boundary shell. (2) through the clear understanding of the theory of boundary shell, it proves the real existence of entity shell and fuzzy shell of highway, and studies the parameters of entity boundary shell.The principle of maintenance and exchange of multi-dimensional boundary shell of expressway system is clarified.Combined with the second law of thermodynamics and the theory of brittleness, it is proved that the entropy increase in the expressway system is the destruction process of the internal ordered structure, and the existence of the boundary shell tries to prevent this destruction, and the negative entropy is input through the boundary door.To resist the brittleness of expressway system, to prevent the brittleness from being excited. (3) based on the sudden accident of expressway system, the model of sudden accident brittleness of expressway system is established, the brittle structure is studied, and the mechanism of brittleness factor acting on the system is clarified.The principle of frailty classification was established.Based on the analysis of the influencing factors of the sudden accidents of the expressway system, the model of the embrittlement defense shell of the expressway system is established based on the sudden accidents.Taking the model parameter as the quantitative index and combining with the example, this paper makes a comparative analysis of the current situation of the case brittleness excitation defense through the parameter quantification, finds out the main brittleness factor, strengthens the defense boundary shell from the root, and points out the direction for the expressway safety management.
【学位授予单位】：兰州交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U491

【参考文献】