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为客观、准确地评估港口拥堵程度,借鉴城市道路交通拥堵指数编制方法,提出基于船舶自动识别系统数据的港口拥堵指数模型和算法。首先,适当外扩船舶交通服务报告线,划定包含所有港外锚地的进出港测算线,再根据船舶自动识别系统数据中每艘船舶进出港口和进出泊位的时间测算出船舶实际进港时长、在泊时长和出港时长。然后,将船舶实际在港时长与正常状态下进出港时长的比值作为港口拥堵程度的评测指标,并对该指标进行加权合成,据此得到港口拥堵指数模型和测算方法。最后,以天津港、深圳港、宁波舟山港等港口为例,对港口拥堵指数进行实证分析,结果表明港口拥堵指数模型充分考虑了港内外锚地和港外漂泊船舶的等待时间,能够更加全面、客观反映港口的真实运行状态和拥堵水平。 相似文献
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随着国际贸易的快速发展,各大港口集装箱吞吐量快速增长。集装箱吞吐量的快速上升使得各大港口集疏运能力出现瓶颈,导致集疏运道路产生交通拥堵及交通事故等问题。针对上述问题,结合洋山港区集疏运道路环境、港外集疏运中心建设方案等因素,提出集卡预约系统、智能集卡编队等分时畅行策略。基于洋山港区集疏运道路现状进行远期流量预测,模拟了远期流量场景和专用车道场景,采用SUMO作为仿真软件对两类场景下分时畅行策略应用效果进行验证。仿真结果表明,基于集卡预约系统策略,远期流量场景能够实现高峰小时不均匀系数降低25%,达到了较好的削峰填谷效果;基于智能集卡编队策略,专用车道场景可实现单车道饱和状态下平均小时通行能力提升98.1%,有效提升了集疏运通道通行能力。 相似文献
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港口枢纽集疏运对城市交通影响分析 总被引:1,自引:0,他引:1
随着我国经济的发展,我国港口的吞吐量增长迅猛。本文以腹地型的港口——上海港为背景,通过对集装箱运输的特点和流程进行分析,指出港口枢纽城市集装箱运输中存在的问题,并提出降低公路集疏运分担率是减少上海港道路集装箱集疏运对城市交通影响的战略目标之一。 相似文献
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<正>厦门港海天集装箱码头位于厦门港三大集装箱作业区(东渡港区、象屿保税区、海沧港区)的东渡港区,目前经营着厦门港6、7、8号3个万吨级深水泊位,其中6号泊位为件杂货泊位,配备3台门机,7、8号2个泊位为集装箱专用泊位,配备4台桥吊。1997年度完成的集装箱吞吐量占全港集装箱吞吐量的52.3%;1998年上半年完成16.6万TEU,同比增长18.4%,成为厦门港乃至全省第一大集装箱码头,为厦门经济特区对外贸易事业的蓬勃发展作出了应有的贡献。 集装箱码头堆场的仓储管理是现代港口作业系统中一个重要组成部分,其功能和地位同港外货运站堆场大不一样。码头箱场是水陆运输的枢纽,是各种运输方式衔接的换装点,又是进出口集装箱货物的集散地。码头堆场能否安全高效地运作,对加速车船周转、货物集疏运、降低运输成本具有特别重要的意义。海天集装箱码头箱场管理部门,在部门组织机构的设置、堆场规划等方面采取了一些做法,在实际工作中发挥 相似文献
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<正>在加快发展的关键时期,潮州提出"立足打造亿吨大港,给力潮州跨越发展"适逢其时。确立潮州港是未来潮州市交通网络体系中的重要枢纽和龙头地位,以大港口带动大交通的发展思路。进一步整合好服务港口的资源,着力完善港口集疏运系统,加快通道和站场建设,形成内外运输的铁路、公路、机场运输方式的空间布 相似文献
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上海港作为一个腹地型的世界级国际集装箱吞吐港,90%以上的国际集装箱通过公路(特指汽车,以下同)、水路、铁路等运输方式由腹地聚集到港口或由港口疏散到腹地,港口集疏运体系的建设在上海港口的发展中占据着极其重要的地位。自1978年开通国际集装箱班轮航线,上海港口至今经过了近30年的历程,集装箱年吞吐量由零起步发展到现今2000多万TEU,跻身于世界港口集装箱年吞吐量第三位。伴随着港口集装箱吞吐量的不断攀升,上海港口国际集装箱集疏运体系逐步形成并发展。2005年上海港口完成集装箱集疏运运量3137.1万TEU。除去水路外贸集疏运运量155… 相似文献
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The main challenge for container ports is the planning required for berthing container ships while docked in port.Growth of containerization is creating problems for ports and container terminals as they reach their capacity limits of various resources which increasingly leads to traffic and port congestion.Good planning and management of container terminal operations reduces waiting time for liner ships.Reducing the waiting time improves the terminal’s productivity and decreases the port difficulties.Two important keys to reducing waiting time with berth allocation are determining suitable access channel depths and increasing the number of berths which in this paper are studied and analyzed as practical solutions.Simulation based analysis is the only way to understand how various resources interact with each other and how they are affected in the berthing time of ships.We used the Enterprise Dynamics software to produce simulation models due to the complexity and nature of the problems.We further present case study for berth allocation simulation of the biggest container terminal in Iran and the optimum access channel depth and the number of berths are obtained from simulation results.The results show a significant reduction in the waiting time for container ships and can be useful for major functions in operations and development of container ship terminals. 相似文献
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港口作为物流链上的水陆联结点,船舶和集疏运车辆汇聚,具有较大的减排潜力,本文介绍国外港口采取的通过采取有效的管理和技术措施减少废气排放的措施,可供参考。 相似文献
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港口危险品集装箱堆场规划与布置研究 总被引:1,自引:0,他引:1
危险品集装箱是港口运输的重要组成部分。由于危险品集装箱具有的危险特性,因此,需专门规划和安排危险品集装箱的堆存,以确保港区安全。结合大连港大窑湾集装箱码头工程实例,重点讨论危险品集装箱堆场平面布置及工艺、安全要求等基本内容,并探讨与分析危险品集装箱堆场的布置和建设原则。 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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通过整机轻型化、平顺性、防偏载等关键技术研究开发出的轻型集装箱跨运车具有显著的新颖性。该机的作业效率高于拖挂车的水平运输方案,可应用于专业集装箱码头、货场和中转站等场所。 相似文献
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The planning, design and development of a container terminal with optimum size and capacity and with a minimum capital cost
is fundamentally dependent upon the loading and discharging operations at the quayside. Achieving this purpose, terminal operators
have to choose the best operating system in the container yard. The decision on which equipment is used at container terminals
depends on several factors. The purpose of this study is to provide a new decision making tool using the first law of thermodynamics.
It considers a port as a control volume of a fluid system and models the port and its traffic on it. The results of this study
evaluate container yard operating systems and set up a basis for decision making to select the best alternatives. 相似文献
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Ceyhun Güven 《Maritime Policy and Management》2019,46(2):201-216
Container transportation plays a critical role in the global shipping network and container terminals need to improve their operations to increase efficiency. Storage yard of a container terminal is a temporary area where the containers stay until they are shipped to their next destination. We concentrate on increasing the efficiency of the storage yard by developing online stacking policies for each incoming container. An unproductive move of a container, performed to reach another container stored underneath, is called reshuffling. The objective in container stacking problem is to minimise the number of reshuffles, thereby increasing the efficiency of terminal operations. Additional weight-related operational constraints bring additional complexity to the online stacking decisions. We propose a mathematical model for the optimal online assignment of an incoming export, transit, import or empty container. We also propose an optimal online stacking policy and compare it with a random policy through simulation. Additionally, lower bounds for the performance measures are obtained through simulation by relaxing the operational constraints of the problem in a third stacking policy. We present and discuss the computational results in terms of four main performance measures. 相似文献