Time-varying Road Selection Model With Traffic Limitation For Hazardous Material Transportation

Hazardous material is a poison, explosion, corrosion, combustion, combustion properties, such as, facilities, environment has a harm to human body of highly toxic chemicals and other chemicals. According to statistics, the domestic commonly used with up to 5000 varieties of hazardous material. Hazardous material logistics including hazardous material storage, handling, transportation, use, waste recycling, processing and other logistics links. Hazardous material logistics each link are likely to produce the social public irresistible factors, these factors can be summed up in two categories: facility location and path planning. Usually the public reaction to the facility location is more sensitive and strong, but with the increasing traffic and road accidents of hazardous material logistics, dynamic features of hazardous material "path planning" factors also nots allow to ignore.At the same time, the traditional road transport of hazardous material research use risk measure to evaluate the road transport of hazardous material is more expected loss, does not take into account the social public’s psychological accept ability. In addition, simply on the basis of rough population coverage and amendments to the history of risk probability to depict a section should ban, and stop in the transportation network planning by road is fixed, significantly reducing the effective utilization of the urban road transportation network, increase the cost of road transport of hazardous material. Therefore, this article summarized research status quo on road transport of hazardous material in ever, on the basis of pointed out the shortcomings of existing research, combining with the relevant theory of road transport of hazardous material, from the perspective of road transport of hazardous material social impact, the construction of road transport of hazardous material based on the social panic, the risk measure model and the transport of hazardous material risk measure model were analyzed. At the same time, build the biggest tourist road transport of hazardous material model based on bass model, from the Angle of the road traffic transportation network, fully considering the time-varying conditions on the transport of hazardous material the influence of the degree of social panic, respectively using double target the most short-circuit algorithm of polynomial and the bi-level programming model to build the time-varying traffic limitation under the condition of road transport of hazardous material the most short circuit model, and using the label method respectively and the heuristic algorithm to solve it. Finally, the road transport of hazardous material in Guangzhou as an example, and the results were analyzed.The main content of this article is divided into four parts as follows:(1) From the perspective of lower degree of social public panic, expounds and analyzes the transport of hazardous material and influencing factors, the basic hypothesis of social panic degree affect population measurement model through total reverse radius determine the degree of social panic, combining the physics momentum F = mv, build the transport of hazardous material risk measure model based on degree of social panic, and the transport of hazardous material the axiom of risk measurement model and the calculation error is analyzed.(2) From the perspective of social influence, through to the bass model based on the analysis of the parameters and characteristics, build the transport of hazardous material social panic degree of diffusion model, depicting the social public the relationship between the psychological ability to accept and hazardous material transport path, and then by setting the public acceptable upper limit of perceived risk to reverse to calculate the transport of hazardous material road traffic, largest for road transport of hazardous material below path optimization model to provide theoretical and technical support.(3) From the Angle of the road traffic transportation network, fully considering the time-varying conditions on the transport of hazardous material social panic, the influence of the design of double target polynomial road transport of hazardous material the most short-circuit algorithm, build time-varying traffic limitation under the condition of road transport of hazardous material the most short circuit model, and use the label method for solving, to obtain an effective way for time-varying harmful goods transportation under the condition of single collection. At the same time, considering the real situations at present stage, in real time on the technical conditions of road transport of hazardous material traffic restrictions limit problem, using a cost strategy to characterize traffic restrictions, build the time-varying traffic limitation under the condition of road transport of hazardous material the most short-circuit bi-level programming model, and USES heuristic algorithm to solve the feasibility of the scheme is given for practical applications.(4) To analyze a Guangzhou road transport of hazardous material. In the basic information of road transport of hazardous material vehicles and GPS data acquisition, on the basis of the data preprocessing, and establish the corresponding database, realized the data compression and cross matching, finally on the road transport network in Guangzhou this article constructed the time-varying capacity limitation of road transport of hazardous material under the condition of the short circuit model for example, and the results were analyzed.