浅析内河船舶油污染的防治

文中分析了内河船舶产生水域污染的主要原因及防止船舶油污染方面存在的问题，并提出了防止内河船舶油污染的五项措施;即加大环保宣传力度，提高船舶防污意识；加强对水运企业和船员防污染知识的培训;加强防污染设备的检验、检测；港口码头应配备油污水接收处理设施;强化防污染现场监督，提高监控手段。     

河床护底工程水槽试验

通过不同的护底形式和结构方式对水流影响进行研究,比较不同形式和结构方式的优劣,寻找出经济合理的护底方案。     

山区河流船闸设计最高通航水位研究

鉴于山区河流的水文特点,采用洪水频率法确定的船闸设计最高通航水位很难满足上下游引航道口门区通航水流条件的要求,研究探讨了采用高水通航历时保证率法确定船闸设计最高通航水位的可行性和合理性,并对嘉陵江IV 级船闸水位选用标准提出了高水通航历时保证率99% 的建议值。     

中小流域桥梁设计流量的H-C-N法

基于暴雨推求中小流域桥梁设计流量时,设计流量受地理参数、暴雨参数等众多因素的影响,计算公式难以显式表达的情况,采用H-C-N法计算中小流域桥梁设计流量:用层次分析法(Analytic hierarchy process)对影响流量的因素进行分析并筛选出主要因素;用模糊聚类法(Fuzzy clustering)从已知水文站数据集中选取合理的训练样本;运用神经网络方法(Neutral network)建立中小流域桥梁设计流量的隐函数关系式,从而计算出中小流域桥梁的设计流量。用VB.NET编写程序编写H-C-N法计算程序,计算了10座中小流域桥梁的设计流量。结果表明,与广东省法和四院法相比,H-C-N法精度较高,是一种较为科学和实用的算法。     

巢湖兆河口门航道整治工程探讨

针对兆河入湖口门附近存在拦门沙碍航问题,采用实测资料分析和三维水沙数模计算相结合的研究方法,研究风生浪流动力作用下湖区泥沙输运特征,探讨口门航道整治方案布置。研究结果表明,巢湖底沙粒径较小,大风天风浪在近岸浅水区发生变形破碎,使水体含沙量增大,在风生湖流作用下,近岸泥沙表现为"波浪掀沙、湖流输沙"的运动特征。结合以往航道治理实践经验,提出整治与疏浚相结合的思路,多方案比选计算结果表明,筑堤方案可明显减小航槽淤积量,其中双侧筑堤方案整治效果更优。综合比选推荐采用双侧筑堤高坝缓坡方案。研究成果可为类似湖区口门航道整治提供借鉴。     

浅议天津滨海新区中心渔港的建设开发模式及重大技术问题的决策

天津滨海新区中心渔港项目作为滨海新区重点工程,已成为滨海休闲旅游区的重点建设内容之一,其建设已被列为天津市2005-2020年间的城市总体规划,并已经国务院批复。该文介绍了中心渔港项目紧紧围绕"北方水产品加工集散中心"和"北方艇产业中心"产业定位,将其建设发展成为一个以水产品加工集散、游艇产业为主,港口物流和休闲旅游相关产业竞相发展的现代化主题经济区。     

高速公路填砂路基的设计与应用

对于少土多砂的地区,采用砂砾填筑路基具有较好的社会效益和经济效益。通过成熟的河砂填筑路基经验,对利用汉江流域漫滩粉细砂填筑砂土路基的设计和应用进行了研究,总结出了较为合理的设计与应用工艺。     

FSA在青岛港港口水域通航安全评估中的应用

在规范化安全评估(FSA)的框架下,本文利用模糊数学理论对船舶在港口水域中的通航安全进行了科学有效的评估,评估结果能够很好地反映船舶在港口水域航行的安全状况。这对减少船舶事故、促进港口通航效率都具有十分重要的意义。     

Studying port selection on liner routes: An approach from logistics perspective

The research aims to study the port selection in liner shipping. The central work is to set up a model to deal with port choice decisions. The model solves three matters: ports on a ship’s route; the order of selected ports and loading/unloading ports for each shipment. Its objective is to minimize total cost including ship cost, port tariff, inland transport cost and inventory cost. The model has been applied in real data, with cargo flows between the USA and Northern Europe. Afterwards, two sensitive analyses are considered. The first assesses the impact of a number of port calls on the total cost which relates closely to the viability of two service patterns: multi ports and hub & spoke. The second analyzes the efficiency of large vessels in the scope of a logistics network. The overriding result of this research is to indicate the influence of logistics factors in the decision of port choice. The research emphasizes the necessity to combine different factors when dealing with this topic, or else a result can be one-sided.     

Strategic alliances in container liner shipping

The economic crisis in the years between 2008 and 2010 has demonstrated the necessity for substantial adjustments on behalf of container lines. Capacities were shifted quickly to emerging and less affected markets allowing a faster recovery of globally organized companies. This paper illustrates the dynamics in the container shipping market. Alongside the main characteristics of the Top 20 ocean shipping companies, liner services are described. These services are classified by geographic coverage and vessel deployment. In addition, this paper provides a better understanding of the collaboration among service providers. Starting from a general framework of co-operative liner services, in-depth analyses of the global alliances in liner shipping are obtained. These formations - Grand Alliance, New World Alliance and CKYH Alliance - are compared with alternative forms of collaboration in the liner shipping industry. The analysis of alliance announcements which are related to operational and strategic changes indicates that the “global alliances” cannot be regarded as closed corporate-like entities. In effect, service agreements are not only negotiated with the focal members of the specific alliance. Instead, every service is arranged individually and under specific conditions. By understanding the dynamics within alliances, we are able to develop an assessment relating to the stability of collaborations. Ultimately, these insights direct us to several paths for future research.