Optimization of commodity vehicles sea-rail intermodal regular train operation plan based on production schedule collaboration
Under the background of the deep integration and innovative development in the logistics and manufacturing industry,it is of great significance to consider the collaboration with the production schedule of original equipment manufacturer(OEM)while preparing the train operation plan to promote the high-quality development of sea-rail intermodal transportation of commodity vehicles.In order to assist OEM in lean management,this article promoted cost reduction and efficiency improvement in the sea-rail intermodal transportation of commodity vehicles,from the perspective of optimizing the connection between various links in the sea-rail intermodal transportation of commodity vehicles.Based on the characteristics of production schedule of OEM and the operation flow of sea-rail intermodal transportation,the optimization method of the operation plan in sea-rail intermodal transportation of commodity vehicles was studied.By taking into comprehensive consideration of the cooperation between the ship schedules,the train operation plans and the production schedules of OEM were established.On the basis of constructing dynamic transportation service network of sea-rail intermodal transportation,the production schedules and alternative ship schedules were known in a certain decision cycle.With the goal of minimizing the total logistics cost of the sea-rail intermodal transportation system,and with the constraints such as the network flow balance,arc capacity and the number of regular train formations requirement,an optimization model of the regular train operation plan was established to determine the operation plans of regular train and the docking ship schedules in the decision cycle.A typical case of sea-rail intermodal transportation of commodity vehicles is selected for solution verification and sensitivity analysis,and compared and analyzed them with two scenarios of ship schedules determination and production and transportation separation under the original mode.From the case study of the sea-rail intermodal transportation of commodity vehicles from Chongqing Yuzui Station to Guangzhou Port,the objective function value under the cooperative production schedules mode was reduced by 147 400 yuan and 80 500 yuan compared with the scenarios of ship schedules determination and the production and transport separation.The transportation efficiency was improved to a certain extent.The results of the case show that taking the production schedule of OEM into consideration when organizing the sea-rail intermodal transportation can effectively reduce the logistics cost and improve the transport efficiency.The proposed model can provide an effective reference for the decision-making of the operation plan of sea-rail intermodal regular train.
国家科技期刊平台
NSTL
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