Research On Reliability Evaluation And Route Selection Of Intermodal Transportation Of Bulk Raw Materials

With the rapid development of China's economy,the comprehensive transportation system has been continuously improved,but the structural contradictions of the transportation mode are still more prominent,the structure is unbalanced,and unreasonably restricts the development of the freight field.Especially in the field of bulk raw materials transportation such as coal,ore,bauxite,roads have undertaken excessive bulk cargo transportation,various transportation methods are not well coordinated,and the comprehensive transportation combination efficiency and service level are not high.Multimodal operation is a transportation process that is completed by two or more vehicles connecting and transferring each other.It is a powerful handle to solve this problem.Bulk cargo transportation "return to rail" and multimodal transport are of great significance to improve the overall transportation efficiency and reduce logistics costs.Based on this,the main research contents of this article include the following:(1)Through sorting out the relevant literature and surveying related companies,it is determined that the reliability influencing factors of intermodal transportation are composed of two major aspects: external factors and internal factors,and a multi-modal reliability evaluation index system is constructed,including 10 first-level indicators and27 Two secondary indicators.(2)Based on the established multimodal transport reliability evaluation index system,a fault tree of multimodal transport reliability influencing factors is constructed,which is further converted into a Bayesian network,and the reliability of multimodal transport under different modes of transport is respectively evaluated using NETICA and MATLAB Measure and analyze the importance of multimodal transport bottom events to provide companies with a basis for decision-making to improve the reliability of multimodal transport.(3)Select the "single O point-single D point" multimodal transport network as the research object,combined with the reliability of the multimodal transport network under different modes of transport,consider the traffic volume of the road section,the traffic volume of the transfer station to limit the traffic volume allocation constraints,build-Cost-time multi-object multimodal transport route selection model,using MATLAB as the programming platform,using NSGA-II algorithm to solve the multi-object multimodal transport route selection model,get the pareto optimal solution set,and analyze the example To verify the effectiveness of models and algorithms.