Journal of System Simulation ›› 2021, Vol. 33 ›› Issue (7): 1699-1712.doi: 10.16182/j.issn1004731x.joss.20-0196

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Optimization of Urban Metro-based Underground Logistics System Network with Hub-and-Spoke Layout

Ren Rui1, Hu Wanjie2,*, Dong Jianjun3, Chen Zhilong1,2   

  1. 1. College of Defense Engineering, Army Engineering University of PLA, Nanjing 210001, China;
    2. College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China;
    3. College of Civil Engineering, Nanjing Tech University, Nanjing 211800, China
  • Received:2020-04-22 Revised:2020-06-07 Online:2021-07-18 Published:2021-07-20

Abstract: Dual application of passenger commuting and underground logistics based on urban metro (M-ULS) provides a solution for traffic congestion. A three-stage optimization approach for the hub-and-spoke M-ULS network is proposed. An Entropy-TOPSIS model for underground flow screening was established based on indicators of freight flows unity, order priority and regional accessibility, considering facility capacity constraints, a location-allocation-routing combinatorial model with construction and operation costs objectives is proposed, Set Coverage Exact Algorithm, Adaptive Immunity Clone Selection Algorithm and Floyd-Warshall Algorithm are developed. Geographic information statistics of Nanjing is applied as the benchmark for real-world simulation. Results show that the modeling and optimization method can be applied to obtain the best configurations schemes of M-ULS network with high efficiency. M-ULS system with networked operations can significantly reduce the road freight traffic and enhance the urban road service capacity.

Key words: city logistics, underground logistics system, metro, network planning, location, mathematical modeling, immune algorithm

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