Modelling and optimisation of online container stacking with operational constraints

Container transportation plays a critical role in the global shipping network and container terminals need to improve their operations to increase efficiency. Storage yard of a container terminal is a temporary area where the containers stay until they are shipped to their next destination. The authors concentrate on increasing the efficiency of the storage yard by developing online stacking policies for each incoming container. An unproductive move of a container, performed to reach another container stored underneath, is called reshuffling. The objective in container stacking problem is to minimise the number of reshuffles, thereby increasing the efficiency of terminal operations. Additional weight-related operational constraints bring additional complexity to the online stacking decisions. The authors propose a mathematical model for the optimal online assignment of an incoming export, transit, import or empty container. The authors also propose an optimal online stacking policy and compare it with a random policy through simulation. Additionally, lower bounds for the performance measures are obtained through simulation by relaxing the operational constraints of the problem in a third stacking policy. The authors present and discuss the computational results in terms of four main performance measures.

Language

  • English

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Filing Info

  • Accession Number: 01690794
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 18 2018 3:01PM