危險品道路運輸網絡模型設計研究
[Abstract]:With the steady development of the national economy, the demand for dangerous goods of processing raw materials or auxiliary materials, which are closely related to the fields of industry, life, transportation and energy, has been rising, and the corresponding dangerous goods transport volume has been rising. Road transport of dangerous goods has become an important way of transportation of dangerous goods in cities and surrounding cities. Because of the urban roads, the surrounding population density is high, the traffic flow is large, once encountered dangerous goods vehicles in the course of transportation accidents and can not be controlled in time, The road and its surrounding areas may cause casualties and adverse phenomena to the surrounding ecological environment, resulting in property losses and social panic. Therefore, in order to reduce the incidence of accidents, prevent dangerous goods road accidents, make dangerous goods transport safe and economical, it is necessary to design and study the dangerous goods road transport model, and then optimize the dangerous goods road transport network. Therefore, this paper mainly from the following aspects: (1) from March 2005 to December 2015, road dangerous goods transport accidents affecting factors, the form of the accident is analyzed in detail. And summarized the influencing factors of accidents. (2) summarize the manifestation of road transportation accidents of dangerous goods, and further divide the influencing factors of road accidents of dangerous goods, respectively from the management, people, vehicles and the environment four main factors to analyze. Secondly, the influence factors of the four major dangerous goods transportation accidents are refined, and the rough set theory is introduced to analyze the primary and secondary factors that lead to the refinement of the accidents. In order to reveal the primary and secondary factors leading to accidents and the degree of importance. (3) through the statistical analysis of dangerous goods accidents and the analysis of the primary and secondary factors based on rough set theory, To get the factors such as roads has an important impact on the road transport network planning of dangerous goods, and thus consider avoiding the road links in the transportation network where the consequences of accidents are great. On this basis, the paper puts forward the idea of avoiding the weighted sum of synthetic value (which is the weighted sum of the consequence and cost of accident), that is to say, the road transport model of dangerous goods is established on the transportation network. Then a two-layer network model of dangerous goods transportation network is formed considering avoiding the maximum synthetic value. Then the feasibility of the model is verified by an example. (4) on the transportation network after some road sections are banned, In this paper, the method of collecting maintenance fee for the maximum synthetic value road section is adopted, that is, the economic intervention method is adopted to force the carrier of dangerous goods transport to choose the road passage with small composite value, and on this basis, the road transport model of dangerous goods is established. Then a double-level programming model of dangerous goods road transportation network considering the government charge is formed, and the feasibility of the model is verified by an example.
【學位授予單位】:蘭州交通大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:U492.336.3
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