Research On Recycling Logistics Vehicle Configuration And Path Optimization Based On Garbage Classification

With the acceleration of China's urbanization process and the improvement of residents' living standards,the amount of urban domestic waste generated has been increasing year by year,and China has become the world's largest waste producing country.In recent years,various provinces and cities have successively issued garbage classification policies,and garbage classification issues have received widespread attention.As a key link between the front-end sorting and the end sorting process,the recycling logistics of waste classification directly determines the operating costs of waste classification,and also determines whether the waste classification policy can be effectively implemented.For this reason,how to carry out reasonable vehicle configuration and path optimization in the recycling process has become a key issue for the sanitation department.Aiming at two different sorting and recycling modes,the paper studies the vehicle configuration and path optimization of waste sorting and recycling logistics,and comparatively analyzes the advantages and disadvantages of the two recycling modes,which can provide a reference for the sorting and recycling operations of environmental sanitation departments in various provinces and cities.The main work of the thesis is as follows:First of all,to study the VRP problem of garbage classification and recycling logistics.Based on the analysis of the business processes of the collection and transportation system and the transshipment system of the garbage recycling logistics,the process specificity of the garbage classification and recycling VRP problem is summarized,and the garbage generation nodes are clustered to provide a basis for the construction and solution of the model.Secondly,considering the complex conditions such as multiple operations through transit stations,time window constraints,and multiple cargo types,a multi-object vehicle path planning model with the lowest operating cost,the most balanced worker workload,and the shortest transit queuing time is constructed.In the process of model construction,according to the difference between the business processes of the"packaging system"and the"consolidation system",the expression of the model objective function and the constraints of the model are distinguished.In terms of model solution,the simulated annealing algorithm was improved to generate solutions under isothermal conditions,and the model was solved by taking the area in charge of the Pufa Park Waste Plant in Huangpu District,Shanghai as an example.Finally,for the vehicle configuration and path optimization model of garbage sorting and recycling under the two modes of "packaging system" and "integrated system",the paper uses the same basic data of the analysis example for analysis.The calculation results show that:(1)unified system the operating cost,the number of vehicles used,and the transfer waiting time are significantly better than the sub-assembly system,and the recovery efficiency of the integrated system is higher;(2)The time penalty cost of the sub-assembly system is lower than that of the integrated system.The residential area can continue to use the sub-packaging system in order to shorten the recovery operation time as much as possible.This article contains 42 references,23 figures and 16 tables.