The Optimization Research Of Logistics And Transportation Service Networks Of Food Cold Chain

With rapid development of China's economy and society, people's living level has been a significant change in the pursuit of food from eating enough toward eating healthy and eating safely. Therefore, therr are more and more demand of "food cold chain", the food cold chain also came into being. In the food cold chain, the mainly factors influencing total cost are inventory and transportation problems. Because of this, this paper focus on the food cold chain inventory optimization and the food cold chain transport network optimization, on one hand, this paper enrich and improve the food cold chain transport service network planning theories and methods, on the other hand, provide decision-making reference for enterprises and government departments.This paper bases on the analysis of domestic and foreign cold chain and transportation network optimization, and combines with the characteristics of food cold chain transport development. The algorithm of this paper mainly is heuristic algorithm, and supplies a example to analyze. Firstly, the method is theoretical analysis, and then is empirical analysis. All empirical analysis bases on theoretical analysis. The qualitative analysis and the quantitative study should be combined, and financially studies the food cold chain transport network. From the whole paper, the structure of the paper consists of three parts.The first part including Chapter1and Chapter2is literature review and theoretical preparation. This part extensively collects domestic and foreign literature related to the food cold chain logistics and transport service network. Theoretical analysis is mainly concentrated in the field of food theory, transport network theory, supply chain theory and inventory control theory. At the same time, the food theory is added into the transportation network optimization and supply chain inventory control. These chapter deeply studies the research status and research trend about writing this paper, and make a preparation for the subsequent modeling and methods theoretical.The second part includes chapter3, chapter4, chapter5and chapter6, which is the main part of this paper. The chapter3studies the inventory optimization of food cold chain, because inventory problem has always been the focus of this subject in supply chain. According to the inventory complementarities problem in the food cold chain, this chapter establishes the suppliers inventory complementary model based on BOM coupled, and uses the analysis method of system dynamics. The result shows that different degree supplier emergency inventory complementation is effectively to restrain customer demand of fluctuation from supplying source, and it is also useful to reduce total inventory quantity and total logistics cost, reduces bullwhip effect and improves the customer service level, and the three couple supplier inventory complementation model is the best. Chapter4is the research on the food cold chain transport networks. According to current realities, this chapter studies the optimization of cold chain empty containers repositioning from the angle of reducing costs, and uses linear programming method, formulates relatively model of in/out of ports or transferring cold chain empty containers, and sets up an example to prove the model. According to the results of the example, the model is proved to be reasonable and useful to solve these issues of cold chain empty containers repositioning. Chapter5is for decision-making model in the extended hub-and-spoke transportation networks. High-speed railway and air transport are considered in the transportation networks decision making. Combined with the extended hub-and-spoke transportation networks theory and taking into multi transportation mode, this chapter establishes decision-making model including multi transportation mode. Based on the fixed cost network design model, chapter6establishes a model of food cold chain logistics and transport service network, and gives a example to prove this model.The third part is a summary and outlook of the full paper. Based on summing up the main conclusions of the study, this part points out the innovation and the lack, and puts forward the direction of further research.The conclusions and results of this paper are the improvement of existing planning theories and methods of transport networks optimization. The mathematical model can be established to provide guidance for actual work in the food cold chain logistics, and it is the theoretical basis and scientific decision-making reference for enterprises and government department. This paper has a certain practical significance.