The Research On Simulation Of Container Terminal Logistics System

Container terminal logistics is an organic system, made of interactive and dynamic components, such as containers, ships, berths, yards, tracks, quay cranes and yard cranes, trucks, labors and communications, in a limited terminal space. Because of the fast-developing global containerization, most of container ports are facing great challenges and chances. Combined with Ministry of Education's important scientific and technological project "Research on the Machinery Allocation and Supervision System of Container Yards Based on Wireless Local Networks", this paper does research on the theoretical methods on the scheduling and simulation of the container terminal logistics system and puts forward some methods to improve the operational efficiency of this system.At the beginning of the paper, a literature review on the domestic and abroad researches of container terminal logistics system is provided and an object-oriented approach to model the whole container terminal logistics system is put forward. Then the paper introduces the basic components, layout, loading and unloading process flow of container terminals and the production scheduling rules.After going over the basic theoretical principles of the object-oriented approach, the paper analyzes structure and sub-systems of the container terminal logistics system and makes the object diagram, characteristic diagram and relationship diagram (class diagram).According to the finished system model based on an object-oriented approach and the process characteristics, a computer simulation model of container terminal logistics system is made based on the software of WITNESS and is validated by the data of an actual terminal. At last the model is used to analyze the machine deployment and scheduling and provides the decision support for the terminal's production management.