Research On Cold Chain Distribution Network Optimization In Pre-warehouse

With the continuous advancement of "Internet +" technology,the rapid development of e-commerce,the cold chain logistics is maturing,and the development of fresh ecommerce is showing a good trend.However,due to the perishable nature of fresh products,the loss cost is relatively high,the transportation and storage of fresh products need to be at a low temperature.The consumption concept of residents has begun to change,and they have higher requirements for the timeliness of the final distribution of fresh products,as a result,the high cost of cold chain distribution severely restricts the development of fresh cold chain.Based on the problems in the above statement,the fresh Pre-warehouse model came into being.Now,scholars have done little research about the location and the distribution of the Pre-warehouse.Reasonable layout of the fresh Pre-warehouse and optimization of the Pre-warehouse distribution path can effectively improve the operation efficiency on cold chain logistics,guarantee the quality of fresh products,improve customer satisfaction,reduce the operating costs of fresh cold chain logistics,improve the economic benefits of fresh e-commerce and promote the healthy development of cold chain logistics.Therefore,this article will study the optimization of the cold chain distribution network of the Pre-warehouse.First,the paper briefly summarizes the current status of the development of cold chain logistics at home and abroad.Then the paper analyzes the development status of C company's cold chain logistics and the development of the Pre-warehouses,show the importance of C company's development of the pre-warehouse.And analyze the problem of development for C company,then put forward to study the optimization problem of the cold chain distribution network of the Pre-warehouse for C company.Secondly,divided the problem of optimizing on cold chain distribution network of company C of the Pre-warehouse into two problems to discussion.After briefly elaborating the location selection objectives of the company C of the Pre-warehouse,a brief analysis of the factors,principles and classic methods of location selection was considered.After comparing and analyzing the advantages and disadvantages of the site selection method,the center of gravity method and the K-means clustering algorithm are combined to solve the design problem of company C on the Pre-warehouse location problem.Thirdly,study the optimization problem of company C on the Pre-warehouse distribution path.Firstly,it elaborated the goal of company C on the pre-warehouse distribution path optimization;then,based on the characteristics of the research problem,the optimization model of the distribution path of company C on the Pre-warehouse is established;Finally,through the comparison of solving algorithms,it is decided to use improved genetic algorithm to solve it.Finally,case studies.Taking the surrounding area of Qixia District in Nanjing of Company C as the research object,through data collection,analysis and sorting,combined with the design of the solution algorithm to solve the case.At last,the best location plan of the Pre-warehouse and the optimal distribution path are obtained,it proves the rationality and validity of the model and the design of solution algorithm established in this paper.