Research On The Distribution Centers Location Problem Of Third-party Cold Chain Logistics

With the improvement of people’s life level and health consciousness, wether the quality and freshness of food can be guaranteed is getting more and more attention. The birth of cold-chain logistics meets the demand of food on quality and freshness. The essence of the cold chain logistics is to ensure the good quality of the food. We store the food in the low temperature environment until we sell it out. As the development of cold chain system is not mature and perfect, it is necessary for us to study it There is still no further theoretical research on distribution center location which is the key to the cold chain logistics, it is necessary for us to study it In addition, for the cold chain distribution center connect producers and sellers, we can integrate social resources, reduce logistics costs and the traffic pressure by choosing correct location of cold chain distribution center. In a word, no matter in theory or practical interests, the research of choosing cold-chain logistics distribution center is extremely important.Firstly, this article analysed the research background of the subject, expounded the research purpose and meaning of the subject, summarized the cold chain logistics and the relevant theoretical research of distribution center location at home and abroad. Secondly, to explore the development situation of cold-chain logistics at home and abroad, analyses the problems in the development of cold chain logistics in our country, highlights the significance of the research. Thirdly, it analyzes the related influence factors of cold chain logistics distribution center location, sets up the evaluation index system, and proposes a multi-attribute evaluation method based on UEOWA and ULHA operator to select candidate distribution center location. Finally, we establishes the double target location of the total cost and service level optimization model according to the characteristics of the third party cold chain logistics. In the process of model, we complete transformation of maximized service level objectives to get the single objective models of the lowest cost by using the concept of punishment cost, and the model is solved by using genetic algorithm, analyzed by using concrete examples to prove the feasibility of the site selection method in this paper. This thesis not only with the method of combining qualitative and quantitative methods was carried out on the cold chain distribution center location, and by using the lowest total cost and service level to maximize mathematical model is set up two goals, more close to reality, to the enterprise for distribution center location provides a theoretical basis.This thesis choosen cold chain distribution center location by using qualitative and quantitative method and set up mathematical model by using the lowest total cost goal and the maximized service level goal. As a result, the situation is more close to reality and it provides a theoretical basis for distribution center location.