Research On Location-route Problem In The Logistics Of Coach Terminal

In the high-speed development of logistics industry, the phenomenon of "last mile","Chinese transportation charges" adversely affect the development of the electronic commerce.With high cost, efficiency and other disadvantage factors of the extensive, logistics industryhas been difficult to meet the circulation of goods demand of efficient, fast, safe, demand forthe modern economic society, and under the impact of high-speed rail and aviation, thepassenger transport enterprises are facing the dual pressures of cost growth and the profitsdecline, they also have an urgent need to find another new profit growth point in the processof strategic restructuring.This paper is based on the passenger transport logistics enterprises, starting the point ofview from the full use of the complexity and diversity of passenger transportation andpassenger car trunk residual carrying capacity, and made the mature expressway network tostrengthen into proprietary logistics distribution channels; made the expressway service areadevelop into logistics center transfer with storage, processing and other functions; finallymature passenger transport network widely, accessibility and expressway network ofspeediness, stability integrated into the traditional distribution network, thus build passengertransport logistics distribution network with a new efficient to "big traffic, large logistics" asthe scale characteristic and the regional logistics and transportation integration developmentas the goal.1. This paper makes full use of the optimization and frame model of location-routeproblem in coach terminal network. It increases the constraints of time window, thetransfer mechanism and the capacity to bulid the definition and mathematical model of thecoach terminal network logistics. And then divide the model to the single-source shortestpath problem in vehicle routing problem and two-stage logistic location problem withmulti-objective decision.2. This paper estabilishs a prototype system for solving the shortest path problem. Inorder to meet the complex topological structure and huge distance and site numberinformation of the expressway network, this paper proposed a new degree-based maximalclique mining algorithm which based on the principle from top to down to reasonablysimplify the expressway network information. At the same time a search tree model whichcontaining a series of pruning strategies and dictionary ordering strategies is derived todescribe the mining process directly and improve the efficiency of searching and clusteringthe expressway network. This paper generates a prototype system of shortest path algorithm with the design of relevant experiment in Shandong province expressway network.The algorithm of Dijkstra provides many dates of matching experience in coach terminalnetwork.3. This paper puts forward the solution scheme to logistics location problem throughexamples. It creatively combines the mathematical optimization model of cost-based andtransfer-based multiple targets distribution location problem into a two-stage logistics locationoptimization model—the bottom location allocate problem with multi-factor decision modeland the top location allocate problem based on immune algorithm model. In the process ofsolving the bottom model, the paper uses SPSS statistical analysis software, and then putforward the method of analyzed weighted linear regression method of influencing factorswhich based on entropy, similarity analysis system clustering method based on analysis ofcandidate services area, analysis effect comprehensive scoring factors of service area withfactor analysis and principal component regression method, finally culminating in the servicearea of the97candidate in Shandong Province selected30service area of Weifang, Qingdao,Pingdu as the optimal logistics center development area. In the process of solving the topmodel, this paper use immune algorithm to apply experimental simulation which based onlogistics demand and location data, and finally select9or11service area from30logistic canbuild into logistics centre such as weifang, qingdao, pingdu, qufu and so on.4. This paper develops the experiment inquiry system of the coach logistics network.Study on the above three aspects, based on the experiment, it explores the strategy of onelinks and strategy of transfer to compare and analyze many factors of the dynamic truckmatching efficiency, and then obtained a series of actual results according to the real data.