Optimum Design for Material Handling System in Container Terminal (3rd Report, Optimum Design of Layout and Operation for Transfer Crane System)

摘要

In this research, the optimum design methods for material handling system in a seaport container terminal are investigated. The optimum design for the container yard with transfer crane system is discussed in the present report. The simulation model is built both from the field survey and the analysis of handling mechanism for a transfer crane. As a result of simulation analysis, the optimum block size of container stowage for a transfer crane is derived. An index to evaluate the condition of delivery operation, that a container is loaded to tractor-trailer with a transfer crane, is defined as the queuing time irregularity. It describes the relationship between the inter-arrival time for tractor- trailers and the stacking height for a transfer crane. For delivery operation, it is confirmed that 3- container stacking is most effective in any case and that queuing time irregularity less than 1 describes the optimum operation with no cumulative waiting time for tractor-trailers.