Research On Multi-Temperature Cold Chain Distribution With Time Dependent

Distribution,as at the end of transport link and an important part of city logistics,is the important content of the logistics research.With the development of the society,distribution way becomes specialized and diversified.Cold-chain distribution,as a large area of the logistics distribution,relates the requirements of people's food quality and healthy.However,the freshness of cold chain products is very short.As a result,distribution frequency is relatively high.At the same time,different types of cold chain products,the temperature requirements of distribution are also different.Using different types of special vehicles for delivery makes high shipping cost.As the production of multi-temperature distribution system,each vehicle can transport goods with different temperature requirements,using the multi-compartment or the insulated box technologies.It also helps to reduce the distribution costs and improve the urban development of cold chain logistics.The main work of this paper includes:(1)Building multi-temperature cold-chain logistics route optimization model.Cold-chain logistics distribution in the literature will turn into joint distribution with multi-temperature products.The quality control of cold chain products use cool storage heat preservation box.The research direction change from cold chain product quality loss cost to the cost of cool storage heat preservation box.Considering the path of the time window model,here gives the multi-temperature distribution route optimization model.(2)Building and solving multi-temperature cold chain distribution with time dependent model.Introducing time dependent factors into multi-temperature distribution model,considering the influence of the actual traffic path model and the late time of arrival,it put forward the issue of intertemporal driving time processing method.The paper uses the method to deal with travel time problem.Then use the designs genetic algorithm to solve the model.(3)Enterprise cold-chain products multi-temperature distribution path applied research.Taking YK group in Hangzhou proprietary network food distribution as a case,for the construction of the final model was solved by the design algorithm.Provide decision basis for enterprise distribution route choice;furthermore,prove the validity of the model through case analysis.The multi-temperature cold chain distribution model considering time dependent in this paper,provides a reference basis on the cold chain distribution path's selection and give a support for temperature distribution operations.Furthermore,the study of MTJD enriches the theory of dynamic cold-chain distribution.