The Optimization Of Rail Empty Car Distribution And Freight Loading Problem Under The Conditions Of The Physical System

With the rapid development of China’s national economy, the transport industry got greatly promoted. The entire community demand more and more freight transport, but rail freight’s market share is on the decline. In order to reverse the downward trend and increase the competitiveness of rail freight in competition with other modes of transport, the rail freight has launched the bold reform measures, called "physical system". Along with change of the freight way, there are some non-adaptive among our railway freight existing organizational methods. It became the bottleneck of shifting freight development modes. Therefore, under the conditions of the physical system, it is urgent to do research on the optimization of freight organizations.Based on the physical system, this article started with the research on the operating status of domestic and international rail freight, set improving rail economic efficiency and enhancing the competitiveness of rail freight as the goals, dividing the problem up to two cases, which is the adequate and inadequate transport capacity. In order to bring more revenues and profits, the rail freight use optimizing freight organizations and marketing optimization method as the means. In case of insufficient transport capacity, mainly from two aspects of empty car distribution and cargo loading in the cargo loading optimization model, I proposed ant colony algorithm, which has been proved reaching the optimization of volume and lorry load at the same time. As for empty car distribution, in order to improve the economic efficiency, cargo loading priority proposed the priority of container transport, or preferred high tariff goods when there is the same model. And I proposed the feasibility of owe shaft opening line. In the case of sufficient transport capacity, the use of construction of Total Logistics, freight product diversification, based on customer relationship management Promotions strategy, rail freight market research and forecasting and other marketing tools can optimize our existing freight marketing tool to attract cargo and take advantage of rail freight transport capacity to raise revenue.