Research On Third-Party Logistics Supermarket Distribution Route Planning Considering Carbon Emissions

Urban residents’ demand for supermarket type products continues to increase,so urban supermarket distribution has been put forward higher requirements.In order to meet the diverse needs of various types of supermarkets,the third-party joint distribution model of supermarket distribution has developed rapidly.Multiple supermarkets are provided with joint distribution services by third-party logistics enterprises,which can improve distribution efficiency.At the same time,however,this has also brought about problems such as high distribution costs and low utilization of distribution resources.All of these problems are related to the unreasonable distribution routes planning of supermarkets.Today,China is vigorously pursuing the "dual carbon" goal,while the carbon emissions of the logistics industry have been consistently high.This requires enterprises to consider not only the distribution cost but also the impact of carbon emissions when planning the distribution routes of supermarkets.Therefore,this thesis takes the third-party joint distribution enterprises responsible for supermarket distribution as the research object,and the distribution routes planning problem of supermarkets considering carbon emissions is studied.The supermarkets served by third-party logistics enterprises are characterized by different sizes and large differences in order demand.Therefore,when planning distribution routes,two different order processing strategies are usually adopted,namely,order splitting strategy and order merging strategy.Splitting or merging orders from supermarkets can improve the utilization of distribution resources.In order to reduce carbon emissions from supermarket distribution,this thesis adds carbon emission costs to the research objectives when planning supermarket distribution routes.The distribution route planning schemes for supermarket based on two different order processing strategies are proposed.Firstly,we review the research status of vehicle routing,supermarket distribution routing,order processing strategies,and carbon emissions from logistics distribution.On this basis,a distribution route planning scheme for supermarket based on different order processing strategies was developed.The goal of the scheme is to minimize the fixed cost of vehicle use and driving costs incurred during the distribution process.Considering the order merging strategy and order splitting strategy constraints of supermarket distribution,a model is constructed,and an improved Grey Wolf Optimization algorithm is designed to solve the problem.Then,the model and algorithm of the scheme are optimized.Carbon emission costs are added to the goal of the model,service time requirements of supermarkets are considered and the Grey Wolf Optimization Genetic Algorithm is designed to solve the model.A distribution route planning scheme for supermarkets considering carbon emissions has been developed.Finally,the third-party logistics distribution company A in Beijing is taken as an example for case analysis.Compared with the case results of the standard Grey Wolf optimization algorithm and genetic algorithm,the effectiveness of the model and algorithm in this thesis has been verified.And the case study provides feasibility suggestions for Company A and other third-party logistics enterprises responsible for supermarket distribution.