Remarshalling Planning for Multiple Automated Yard Cranes Considering Slack Time

Abstract

:Recently,containerterminaloperatorshavemadeeffortstodevelopanefficientremarshallingplaninresponsetotheincrease in automation of equipment handling and transport of containers in the terminals. Usually, containers are handled by multiple AYCs(automatedyardcranes)in-yardinanautomatedcontainerterminal,andterminaloperatorsestablisharemarshallingplanusingslack timetoincreasetheefficiencyofshipoperation.Thisstudydevelopstheoptimalmathematicalmodelthroughmixedintegerprogramming asasolutiontotheproblemofdispatchingmultipleAYCs.Consideringthedifficultyofdirectapplicationtothefieldduetocomputation time,weanalyzethefiveprototypicaldispatchingrulesforrealworldadaptation.Anumericalexperimentfoundthatthemaximumweight ratio(MR)ruleandthemaximumweight(MW)rulearetheidealdispatchingsolutionstothemultipleAYCsdispatchingproblem.