Research On The Location And Route Planning Of Terminal Facilities Under The Mode Of Joint Distribution

In recent years,the continuous development of the common distribution mode,which can achieve the unified distribution of logistics by integrating the distribution business of various logistics enterprises,has become one of the effective ways to solve many problems of terminal distribution,which can effectively reduce the cost of distribution and reduce the time of distribution.In view of this,this thesis introduces the joint distribution mode into the terminal distribution network,taking the terminal joint distribution facility location and vehicle distribution route as the research object,on the basis of known distribution demand,constructs the terminal logistics facility location and vehicle distribution route model,and combines the case to verify the feasibility of the problem model and the effectiveness of the solution algorithm.Finally,according to the research results of this thesis,the prototype system of terminal joint distribution network is designed and developed.This thesis studies the following aspects:(1)Combined with the relevant research at home and abroad,this thesis introduces the definition and classification of the joint distribution mode,the advantages brought by the implementation of the joint distribution mode by logistics enterprises and the possible obstacles to the implementation of the joint distribution mode;in view of the location of the terminal facilities and the vehicle distribution route planning under the joint distribution mode,it summarizes the definition,classification and basic mathematical model of the problem;finally,the algorithm of solving the related problems is introduced.(2)In order to obtain more accurate location data and reduce the scale of calculation,the inverse algorithm of dynamic programming method is applied to solve the location network of terminal joint distribution facilities.Aiming at the location problem of terminal joint distribution self extracting point in the lower layer,considering the collaborative optimization of daily operation cost of self extracting point and distance satisfaction of residential area,this thesis constructs the location model of terminal joint distribution self extracting point,designs a heuristic algorithm based on the nearby rules to solve the problem,and discusses the influence of different service radius and different target weight of self extracting point on the optimization result;aiming at the location problem of the upper level terminal joint distribution center,combined with the rent coefficient,the optimization objective is to minimize the weighted value of the total distribution distance and the total distribution volume,and the model of the terminal joint distribution center location is constructed,and the enumeration method is used to solve it.(3)According to the calculation results of the two-tier terminal joint distribution facility location network,taking the shortest total distribution distance between each vehicle from the distribution center to their respective points as the optimization objective,a vehicle route planning model of terminal joint distribution is constructed,and a genetic algorithm is designed to solve the problem.(4)In order to realize the integrated application of the problem research in this thesis,simplify the assignment mode of the problem and algorithm parameters,optimize the operation process,design and develop the terminal joint distribution network prototype system under the Java swing platform.