共查询到20条相似文献,搜索用时 15 毫秒
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现代煤炭港口由传统装卸服务向综合物流服务转型过程中,对港口整体调度的智能性与效率性要求提升到新高度,因此需要以系统论的观点解决煤炭港口的联合调度优化问题。针对影响卸车调度的关键问题,综合考虑车流集中到达、列车限制性调度等因素,以现代煤炭港口生产工艺流程为基础,重点研究现代煤炭港口卸车联合调度优化,构建以待车时间最短、作业时间最短且关联堆场作业动态的卸车联合调度优化模型(火车-翻车机-堆场联合调度优化模型),运用相应优化策略,分析优化模型,实现卸车调度各环节智能化的最优解决途径。 相似文献
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结合青岛前湾招商局国际集装箱码头工程设计施工和运行情况,分析总结了轨道式集装箱龙门起重机(RMG)堆场工艺布置特点、设备选型及配备数量的确定、RMG重箱堆场的设计与施工中的亮点和RMG装卸工艺模式在我国集装箱码头中的应用前景.实践表明,RMG作为集装箱码头的装卸模式,实现了低碳环保、节能高效. 相似文献
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集装箱船配载过程中的重要环节是合理的箱位分配,它对保证集装箱船装载后的航行性能及其码头装箱效率有重要的影响.随着集装箱船的大型化及待装船箱量的增加,该问题的求解较为困难.结合集装箱船配载中箱位分配的实际操作特点,提出了利用与禁忌算法相结合的混合蚁群算法来求解集装箱的箱位分配问题.仿真模拟试验表明该算法能够在不影响装箱难度的同时,大幅提高集装箱装船后船舶的航行性能. 相似文献
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Mansoor Kiani Moghadam Ali Reza Moazen Jahromi Amir Saeed Nooramin 《WMU Journal of Maritime Affairs》2011,10(2):227-240
One of the most important issues that planners and developers of ports have to address at the planning process of container
terminals is how to effectively optimize truck turnaround times. The time that a truck spends at a container terminal for
loading and/or unloading of cargo is a real cost scenario which affects not only the smooth operation of ports but also the
overall cost of the container trade. The main objective of this article is to provide a decision support tool for selecting
the best container yard gantry crane for loading/discharging operation of trucks at the landside of marine container terminals.
Achieving this goal, this study aims at introducing and recommending the multiple attribute decision-making and the fuzzy
analytical hierarchy process models that have been proven to provide a concrete basis for such a selection decision. 相似文献
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Due to the importance of drayage operations, operators at marine container terminals are increasingly looking to reduce the time a truck spends at the terminal to complete a transaction. This study introduces an agent-based approach to model yard cranes for the analysis of truck turn time. The objective of the model is to solve the yard crane scheduling problem (i.e. determining the sequence of drayage trucks to serve to minimize their waiting time). It is accomplished by modeling the yard crane operators as agents that employ reinforcement learning; specifically, q-learning. The proposed agent-based, q-learning model is developed using Netlogo. Experimental results show that the q-learning model is very effective in assisting the yard crane operator to select the next best move. Thus, the proposed q-learning model could potentially be integrated into existing yard management systems to automate the truck selection process and thereby improve yard operations. 相似文献
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基于多智能体仿真的集装箱港口作业效率研究 总被引:1,自引:0,他引:1
集装箱港口生产作业系统是复杂的离散事件系统,数学建模方法难以构建针对整个系统的模型,而基于过程的仿真模型通常缺乏对设备调度的灵活性。为准确描述我国集装箱港口的作业流程,分析内卡配置数量对港口作业效率的影响,提出了基于事件驱动的集装箱港口多智能体(Multi-Agent)仿真模型。仿真结果表明:岸桥平均装卸效率(GCR)随着内卡数量的增加先急剧增加后缓慢增加,船舶平均等待时间(AWT)和平均在泊时间(AST)与岸桥平均装卸效率呈明显负相关关系。 相似文献
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针对公司集装箱堆场的堆存能力趋向饱和的现状,为提高场地有效堆存能力,提高场地集装箱周转效率和作业效率,就74库东侧空箱场地改造成龙门吊作业场地方案,进行可行性论证。并提出4种方案,其中选出最佳方案。 相似文献
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为提高设备运行效率,节约人力成本,一些集装箱码头开创了"一拖双挂"技术。介绍集装箱码头牵引车"一拖双挂"技术项目背景和发展情况。分析该项目节能原理,阐述车型选定、实施方案、技术创新点等。该项目取得良好节能效益、经济效益、社会效益。 相似文献
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集装箱码头集卡调度系统 总被引:3,自引:0,他引:3
集装箱集卡调度(TPS)系统通过动态实时地调度集卡,将装船、卸船和转堆等一系列需要集卡参与的多条作业路共享所有正在码头作业的集卡,使每辆集卡同时对应多条作业路,保证集卡在卸载后可就近投入其他需要的作业路中,以此缩短集卡的空载行驶时间和距离,实现大船作业边装边卸,在不增加集卡数量的基础上大幅度提高生产效率。 相似文献
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根据集装箱堆场空箱堆取作业的特点,提出了一种四卷筒轻型空箱RMG的方案,对其关键技术进行研究。目前该机型已用于空箱堆场作业,其适应性强、性价比高,特别适合于专业空箱堆场和中小码头应用。 相似文献
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Dual cycling is an operation technique whereby quay cranes perform loading and unloading operations simultaneously in the same ship bay. In this article, a mixed-integer programming model for quay crane dual-cycling scheduling is developed. The model considers the stowage plan of outbound containers and the operation sequence of quay cranes. To solve the model, a heuristic method, called bi-level genetic algorithm, is designed. Meanwhile, a simulation optimization method integrating the intelligent decision mechanism of the optimization algorithm and evaluation function of simulation model is proposed. Numerical experiments indicate that dual cycling can reduce the operation time of quay cranes compared to the method of scheduling loading and unloading separately. Moreover, the model and algorithms developed in this article can tackle quay crane dual-cycling problem efficiently. 相似文献