Research On Integrated Optimization Scheduling Of Container Terminal Logistics Operation System

As the China economy has been increasing continuously in the recent years, the throughput of the container terminal is always amazingly increased. Under the influence of logistics and supply chain management, demands for fast, just-in-time and precise service from the carriers and the clients become much urgent, how to quickly load and unload containers in container terminal turns to be one of the hottest problem needed to be solved. Compared with the container terminals in earlier times, the infrastructures and facilities of current terminals have been increasingly improved. However, with the limited resources of land use, handling equipments and logistics processing, the terminal resources and facilities are increasingly stressed, the speed of improving basic facilities has lagged behind the increasing speed of the container throughput. Therefore, considered that terminal function enhanced by improving the hardware environment of the terminal is restricted, the urgent demands of logistics terminal operations need more 'soft' environment support, such as the terminal logistics operation management. Container logistics operation is the core activity in the container terminal, and optimization scheduling of the terminal handling equipments is the core sector of logistics operation management, which directly affects the efficiency of logistics operation and the service level.This paper takes container terminal logistic operation system as the research object, make a research on integrated optimization of the container terminal handling equipments with the focus of the terminal logistics operation flow integration, based on the systematical analysis of the terminal logistics operation. The research covers the following aspects:(1) Research on Integration Optimization of the Container Terminal Logistics Operation SystemThe container terminal logistics operation is a stochastic, dynamic and complex system. The whole logistics operation system is not certainly optimal even if every link of the container terminal logistics operation is optimal. Conversely, the optimal logistics operation system doesn't require that every link of operation is the optimal. Therefore, the idea of integrated optimization of logistics operation system is proposed in this paper to gain the logistics operational efficiency of container terminal based on analyzing every factor of the container terminal logistics operation system and the terminal logistics operation practice, and the frame model of the container terminal logistics operation system is built upon the integrating and optimizing the logistics flow, operation information and operation management. (2) Research on theory of Container Terminal Handling Equipments Integrated Optimization SchedulingFrom the model of terminal logistics operation system, logistics operation flow integration is the key of the integration of terminal logistics operation system, and that logistics operation integration is substantially equal to integrate and optimally schedule container terminal handling equipments. This paper will make a deep research on integrated optimization scheduling terminal handling equipments on the basis of the systematical analysis of handling equipments operation terminal handling equipments, define container terminal handling equipments integrated optimization scheduling, research on and analyze the significance and the general thought of integrated optimization scheduling handling equipments, and then define the conditions of integrated optimization scheduling of container terminal handling equipments.(3) Research on Model and Algorithm of Container Terminal Handling Equipments Integrated Optimization SchedulingThis paper is grouping loaded containers according to quay operation scope, building the handling equipments integrated optimization scheduling model of container terminal logistics operation system with the minimum quay operation completion time as objective function, designing steps of filtered beam search algorithm for integrated scheduling model, and determining the optimal sequence of loading containers by solution. Handling equipments integrated optimization scheduling is conducted on relevant principles of operation on the container terminal loading activity chain. A comparative analysis of logistics operational efficiency of ordinary scheduling operation and integrated optimization scheduling operation mode, will be made through terminal logistics operation practical cases.(4) Research on Optimization Scheduling of Rubber Tired Gantry CraneRubber tired gantry crane in the stack yard is the initial link of container loading operation. Therefore, rubber tired gantry crane operation directly determines the subsequent handling operation on the loading chain. Rubber tired gantry crane has been one of bottlenecks in terminal logistics operation due to its large volume and slow operational speed. Due to the influence of imbalance of rubber tired gantry crane operation amount in every block, the equipment needs to move within the block during the operation. This paper makes a deep research on how to make sure handling equipments integrated optimization scheduling can be successfully brought into effect, by optimization scheduling of rubber tired gantry crane under given conditions, establishing optimization scheduling model of gantry crane, designing research algorithm of the model, calculating the earliest completion time of rubber tired gantry crane operation in all blocks and constituting the operation scheduling scheme when gantry crane is moving in blocks.(5) Demonstration of Multi-Agent Container Terminal Logistics Operation Scheduling SystemBased on integrated optimization of container terminal logistics operation system proposed in this paper, an agent based implementation is developed to demonstrate the capability of the realization of combination of handling equipments integrated optimization scheduling and Multi-Agent system, and combination of container terminal handling equipments integrated optimization scheduling and terminal logistics operation practice, which offers a theoretical foundation for developing multi-agent based container terminal handling equipments integrated optimization scheduling system.