Dynamic Distribution And Simulation Study Of Single Container And Vertical Strip Block Of The Automated Container Terminal

With the further development of information technology,many industries have undergone disruptive changes in the world,and the industrial structure has become more and more sophisticated.The container terminal,as the key node of global logistics,is also undergoing drastic changes,and is developing towards automation and intelligence.At present,the yard of classic automated container terminal is arranged along the vertical shoreline,which makes the trolley traveling mechanism of the rail crane in the yard has changed from the auxiliary mechanism to the main working mechanism,so the energy consumption is greatly increased.Therefore,this thesis studies a new handing process,"Quay +AGV+ Container terminal crane ",and designs strip container block with a single container width vertically.The whole logistics system embodies the characteristics of delicacy,efficiency and easy automation.Aiming at the problems such as traffic interference of horizontal transport vehicles and rehand container,this thesis studies the dynamic distribution strategy of container area by using mathematical programming theory and system simulation method.And the following results have been achieved:(1)With the construction and working principle of new container terminal crane,designs the strip vertical container block with a single-container width,and two kinds of container storage strategies are proposed for the new technology,namely,the storage of the import and export containers in the same block and the storage of the import and export containers in separate block.(2)with the optimization objective of minimizing handing time from the storage yard to the corresponding ship and balancing the operation load of yard crane,established the mathematical model of container area stacking allocation under the strategy of mixed storage and separate storage,and a two-layer heuristic algorithm was designed to resolve model.(3)Considering the weaknesses of the new process for rehanding container,the mathematical model of the location distribution of the export containers in the stack is established with the objective of minimizing the volume of rehanding containers in the stack in the single-container area,and a heuristic algorithm was designed to compare and analyze the different strategies in stack.It is found that the quantity of rehanding container in stack is small using the heuristic optimization stockpiling strategy and the strategy is better.(4)Established the queuing network model of container terminal logistics system,and combined with the idea of modular modeling,built the dynamic distribution simulation model of strip vertical container block with a single-container width of automated terminal.The system simulation method is used to verify the performance of different optimal stockpiling strategies and the overall production efficiency.Under the modern information technology,plan more carefully,work more accurately,the use of delicate and light yard handling technology becomes possible,the research results of this thesis provides new ideas and new basis for the low-carbon and energy-saving terminal handing production.