新一代超大型自航绞吸挖泥船性能论证及设计方案

近年来随着工程建设对绞吸挖泥船的要求不断提升，绞吸挖泥船正在向总装机功率超大型化、强挖掘能力、高疏浚性能、智能自动化、节能和环保方向发展，结合国内外超大型绞吸挖泥船的特点和发展趋势，对新一代超大型自航绞吸挖泥船的船舶首尾方向、船型、主尺度、动力配置、疏浚设备配置、船舶主要功能和总布置等设计要点进行论证分析，形成了超大型绞吸式挖泥船船型论证分析的总体思路和设计方案，为超大型自航绞吸式挖泥船的总体设计提供参考。     

“天鲲”号超大型自航绞吸挖泥船总体设计技术

结合国内外超大型绞吸挖泥船的特点和发展趋势,对我国自主研发设计的"天鲲"号超大型自航绞吸挖泥船的船型、主尺度和总布置等总体设计要点进行详细论述,形成了大型绞吸式挖泥船船型论证分析的总体思路,为超大型自航绞吸式挖泥船的总体设计提供参考,提升了国内整体绞吸船的设计和建造水平。     

中小型自航绞吸挖泥船经济性评估初探

随着工业发展,需要拖轮协助作业的非自航绞吸挖泥船越来越难以满足市场需要。为了更好地进行航道疏浚作业,自航绞吸挖泥船的研究不断增多,而目前对自航绞吸挖泥船的研究仅局限于适合广阔水域的大型或超大型船型。我国河流水域众多,对适用于狭窄水域的中小型自航绞吸挖泥船也有一定需求量。因此,文中通过对某中小型自航绞吸挖泥船进行电力推进设计,与相同疏浚能力的非自航绞吸挖泥船对比分析、综合考量后认为,中小型自航绞吸挖泥船具有灵活、环保、便捷、经济等优势。     

大型自航绞吸挖泥船的发展与新的技术要求

论文介绍了国内外自航绞吸挖泥船的发展现状,对比了国内外大型自航绞吸挖泥船技术特点,提出了大型自航绞吸挖泥船新的技术要求;探讨了自航绞吸挖泥船装机功率科学合理增加的可行性;文中表述了绞吸式挖泥船关键技术的研究和应用。     

“天鲲号”超大型自航绞吸船辅钢桩门装置设计

针对自航绞吸船在艏部设置辅钢桩定位系统存在的影响航速等问题，“天鲲”号超大型自航绞吸挖泥船提出了在艏部设置钢桩门的解决方案。该解决方案不仅可以保持完整的艏部线型，减小航行阻力，而且还可以减小辅钢桩甲板作业空间。本文介绍了“天鲲”号辅钢桩门装置的设计方案，以及辅桩钢桩门结构设计，最后提出了辅钢桩门开闭油缸等关键设备的选型计算方法及选型结果。本文可为超大型自航绞吸式挖泥船的辅钢桩门装置的设计分析提供参考和设计思路。     

超大型自航绞吸挖泥船发展现状及设计特点

随着疏浚事业的不断发展和科学技术的进步，为了适应各种不同工况的需要和满足海上施工的要求，绞吸挖泥船挖掘能力越来越强，疏浚距离越来越远，自动化程度越来越高，越来越节能和环保。文章介绍了国内外超大型自航绞吸挖泥船的发展现状和主要技术特点，通过对目前国内外自航绞吸挖泥船主要性能参数进行调研分析对比，有针对性地分析了各大型船舶的配置情况，提出了未来超大型自航绞吸挖泥船一些关键参数、技术指标和设计要点，为船舶设计提供理论和技术参考。     

超大型自航绞吸船的经济性分析及发展趋势

文章介绍了绞吸式挖泥船的特点及自航绞吸船为适应市场需要产生、发展的历史和现状,并在此基础上评估了自航绞吸挖泥船的发展趋势.同时,对自航和非自航绞吸式挖泥船的经济性进行了分析.     

超巨型耙吸挖泥船结构设计

根据收集的目前世界上泥舱舱容30,000m3以上超巨型耙吸挖泥船资料,结合工信部3万立方米级耙吸挖泥船自主研发课题及目标船型38,000m3耙吸挖泥船基本设计,对超巨型耙吸挖泥船的结构设计包括骨架系统、泥舱结构型式、结构钢材等进行比较和选取,并对船体总纵强度、疲劳强度及船体振动分析进行阐述。本文对超巨型耙吸挖泥船结构设计和强度分析可提供参考和设计思路。     

自航绞吸挖泥船全船结构强度和总振动特性评估

绞吸挖泥船有着不同于常规船型的结构特点,其首尾均有很大的开槽来设置桥架和台车。主甲板上的大开口以及放置在船体上的复杂工程设备会使其在结构强度、变形和振动特性等方面不同于常规船舶。通过建立一艘自航绞吸挖泥船的全船结构和桥架结构的有限元模型,对全船结构在航行及工作状态下的总强度以及总振动特性进行了分析和研究,以期对该类型船舶的设计提供参考和依据。     

科技新成果

亚洲最大自航绞吸式挖泥船试航成功 由上海交通大学船建学院船舶与海洋工程设计研究所承担设计的亚洲最大自航绞吸式挖泥船“天鲸号”日前试航成功。     

Errata

正In the paper"Influence of Fouling Assemblage on the Corrosion Behaviour of Mild Steel in the Coastal Waters of The Gulf of Mannar,India"in Vol.12,No.4,Page:509,References were lost,and the two authors’biographies were identical.The correct text is shown below.We apologize to the authors and our readers for any inconvenience caused by the errors.     

Journal of Marine Science and Application 2014 Sum. Contents

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第34届海洋、离岸及极地工程国际会议(英文)

正St.John's,Newfoundland,Canada,May 31-June 5,2015 OMAE2015 is the ideal forum for researchers,engineers,managers,technicians and students from the scientific and industrial communities from around the world to: meet and present advances in technology and its scientific support;     

联合作战计划和执行系统

全球指挥控制系统(GCCS)实施当前美国海军网络中心战信息基础设施的联合计划网络。联合作战计划和执行系统(JOPES)支持GCCS实现联合计划。JOPES有两类计划：时间不限的精密预案计划生成作战计划、方案计划或职能计划；时间敏感的危机行动计划生成作战命令或战役方案。前者在和平时期创建的作战计划是后者的计划基础，加速应付危机的能力。     

Eastbound or westbound ?

In terms of equal sailing distances, where is the inflexion when ships depart from ports in the Asian Continent to New York via Suez and/or Panama？
The answer is China South Port Group （Hong Kong, Shenzhen and Guangzhou）.     

Recent progress on wave induced loading measurements in warships

Recent measurements of wave induced hull strain and flexure in RN warships are presented together with the derivation of the current design criteria for extreme hull girder bending loads. The history of the development of the shipboard instrumentation used is given and recent developments to improve the quality and ease of analysis of the data are described. An unexpectedly high transverse asymmetry in the longitudinal strains measured in destroyers is shown to be the result of a combination of vertical and lateral bending in oblique seas. Finally recent theoretical comparisons between the loading of Deep-Vee hulls and conventional UK rounded bilge hulls are presented which demonstrate the higher loading experienced by this type of hull form.     

桥梁防撞设施物理模型试验

物理模型试验是预报防撞设施所受撞击力及优化设计方案的主要方法之一。结合杭州湾大桥柔性防撞设施及东海大桥独立式防撞体设计方案,阐述了船—防撞体撞击试验的基本原理、方法、试验方案及相关试验结果。提出了柔性防撞系统的优化方案。试验结果表明,该方案经济有效,可供预报类似桥梁防撞设施撞击力时参考。     

印尼某电厂码头水工建筑物设计

印尼某电厂项目码头水工建筑物包括码头、防波堤和护岸等主要组成部分。在该项目水工建筑物的设计过程中,综合考虑当地的自然条件、施工能力和材料来源等因素,不断优化结构选型和结构断面。根据不同使用要求,护岸分别采用直立式和斜坡式2种结构型式,推荐的设计方案节省投资、施工方便,可供同类工程设计参考。     

Impact of regulation on the performances of long-distance transport services: A comparison of the different approaches in Sweden and Norway

Despite the many socio-economic similarities between Sweden and Norway, differences in jurisdiction, organisation, cooperation, and financing of long-distance passenger train and coach services have led to the development of four distinctively different ways of serving the markets. This paper describes how the train and coach markets have developed in the two countries, with emphasis on regulatory and industrial structure and a couple of performance variables.Looking at passenger rail, both countries separated infrastructure from operation over a decade ago. However, while Norwegian rail is characterised by an almost monopoly supplier, rail services in Sweden are partly decentralised to the responsibility of county authorities and are widely subjected to competitive tendering. The rest of the network is about to be opened up for on-the-track competition. Swedish Rail (SJ) has spent the last decades consolidating its core business (passenger rail) and sold out its other businesses. In contrast, the Norwegian state rail (NSB) has expanded its business to become a major bus operator and property owner, with extensions also into the Swedish market.The coach industry was more recently deregulated in both countries. The Swedish coach market is dominated by privately owned companies operating services to and from Stockholm. In Norway, state-owned NSB is a major coach operator on medium distance routes, and is also the largest partner of Nor-Way Bussekspress which totally dominates long-distance coach services. Further, the Norwegian coach market is characterised by cross-ownership and cooperation which has enabled an extensive route network which covers most of Norway.We find distinct differences in achievements in the two modes and in the two countries. Swedish rail services have succeeded in winning market shares and in renewing and developing both infrastructure and service levels to a greater extent than the Norwegian model. On the other hand, the Norwegian coach market seems to be more developed and efficient compared to its Swedish counterpart.The paper concludes with a discussion on the possible links between the different approaches and the performance observed, with the aim to stimulate further and more detailed research on some important issues.     

开放式数据挖掘系统模型

目前国内已经出现了少量的数据挖掘相关产品。国内数据挖掘软件无论从数量还是质量上比较，都与国外软件存在着较大的差距。随着数据仓库技术的普及，数据挖掘应用的需求越来越强烈，如何缩短这种差距，研发数据挖掘软件产品成为国内业界的一个重要问题。通过引用目前国际通用数据挖掘标准技术来构建开放式的数据挖掘系统模型，该系统模型从可扩展性、可重用性、易用性等方面得到了加强。