JOINT LOCATION-TRANSPORTATION PROBLEM IN RELIEF DISTRIBUTION SYSTEMS BASED ON BI-LEVEL PROGRAMMING
ZHENG Bin1 , MA Zujun2 , LI Shuanglin3
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1. Emei Campus, Southwest Jiaotong University, Emeishan 614202; 2. Institute for Logistics and Emergency Management, School of Economics and Management,Southwest Jiaotong University, Chengdu 610031; 3. School of Transportation and Logistics, Southwest Jiaotong University, Chengdu 610031
Relief distribution is a focus of attention of emergency response after a public emergency. In this paper, a bi-level programming model is developed to describe the transfer facility location and joint transportation problem in a two-echelon relief distribution system. The upper level is to minimize the delivery time of relief materials, and the lower level is to maximize the fairness of relief material distribution. Then a hybrid genetic algorithm with heuristic rules
and a two-phase decoded operation, i.e., transfer facility locating in the first phase and vehicle routing in the second phase, is proposed to solve the model. Finally, the validity of the model and algorithm is demonstrated by a numerical example based on Wenchuan earthquake relief distribution. The results show that the proposed genetic algorithm has good performance and is suitable for the joint location-transportation problem in relief distribution.
ZHENG Bin , MA Zujun , LI Shuanglin.
JOINT LOCATION-TRANSPORTATION PROBLEM IN RELIEF DISTRIBUTION SYSTEMS BASED ON BI-LEVEL PROGRAMMING. Journal of Systems Science and Mathematical Sciences, 2013, 33(9): 1045-1060 https://doi.org/10.12341/jssms12169