The Research Of Method Of Simulation And Optimization For Container Terminal

Container terminal logistics system consisted of port establishments,engineer equipments and person, with the functions of loading or unloadingoperation, transportion and storage. With the rapid development of global tradeand the furious competition of ports, the operators and decision-making personsof ports were meeting more opportunities and challenges. In order to make thelayout design of port and the operation of logistics system of container terminaleffective, the research of simulating techniques and optimizing methods wereindispensable involving the layout, equipment configuring, scheduling. In thisarticle, the dissertations of simulation and optimization of container terminalwere researched involving equipment configuring, berth allocation, trailerscheduling, avoiding collision of AGV, terminal layout. These techniques andmethods of compound modeling, genetic algorithm, fuzzy control and virtualreality were used above these researches. The main contents and fruits as follows:(1) Dynamic and discrete character of container terminal logistics system andthe uncertain property of ship arriving for the affect of equipment configuringwere thought over. The operating system of container terminal was analyzed. Themethod was presented to research equipment configuring using Petri net. Thehierarchical Petri net was expanded based on the research of colored Petri net.The hierarchical Petri net was presented to simple the model of terminaloperating system. Colored tokens were used to describe resources of terminal.The dynamic events of terminal occurred using timed tokens. An instance fortrailer configuring of one planning terminal was simulated and analyzed using themethod in CPN Tools, and it showed the method was feasible.(2) Berth allocation problem (BAP) was solved generally based on fixedberth. With the development of large-scale ship, BAP based on fixed berth wasinapposite. In the article, the dynamic continuous berth allocation problem(DCBAP) with quay crane assignment problem (QCAP) was presented andresearched. In the article the mathematics model for DCBAP with QCAP was set up adopting 0-1 integer mapping method. The optimization of DCBAP wassolved using genetic algorithm. Compounding chromosomes were coded todescribe the information of ship. The fitness function that was switched from themathematics model for DCBAP was setup. The simulating model was setup usingeM-Plant, and the simulating data based on the data of one container terminal ofShanghai port were gained. The simulating result showed that the method couldbetter solve the BAP.(3) With the regard of trailer scheduling problem, the hybrid flow shopproblem with blocking (HFS-B) was introduced to analyze the flow of containerwith different attributes (import container, export container) in order to describeand optimize trailer scheduling problem. The mathematics model that wasdescribed using HFS-B with attribute for trailer scheduling problem was setup.The four section chromosomes based on the coding of job form and machineform were constructed. The weight approach was introduced to solvemulti-objective problem of trailer scheduling. At last an instance of trailerdynamic scheduling based on HFS-B with output container attribute wassimulated and the outputting data were compared with the data of trailer staticscheduling. It showed that the method could effectually solve the trailerscheduling problem.(4) With the regard of the container stacks of container yard which wereparallel with the wharf surface direction, the buffer based fuzzy control strategy(FCB) was firstly presented to solve the avoiding collision of crossway forautomated container terminal using AGV. The judge of buffer and each phasetime of crossway were the main contents. The fuzzy controller was designed todetermine the time of passing different direction of crossway. The simulatingmodel of terminal crossway was set up by eM-Plant. At last the FIFO and FCBwere simulated and compared based on most groups of actual crossway datum. Itshowed that the FCB strategy could bring the help for decision-making of trafficcontrolling for automated container terminal.(5) As the flow of terminal operation was complicated, lots of 3D simulationsfor terminal were simulated after thing occurring and couldn't be realized for the modifications of blue prints by inputting data. In the article, the idea andframework of virtual container terminal were presented. A simulating flat was setup using the soft of MultiGen Creator and Vega in order to realize dynamic layoutand simulation. The modeling techniques for the virtual great scene of containerterminal with most equipment were researched. The algorithm of trailer path forcontainer terminal with bridge approaches was showed. At last some instances ofone terminal of Shanghai port with different wharf width or trailer numbers for aquay crane were simulated and compared for container terminal with bridgeapproaches in order to offer decision-making for design departments.