沿海工程船防腐与密封技术及其应用

根据沿海工作船受腐蚀的情况,通过分析涂料防腐、电弧喷涂防腐、化学镀Ni-P非晶态合金镀层保护、锌铬深层镀层保护、锌铝共渗防腐、高分子螺纹密封锁固防腐技术、高分子平面密封胶防腐技术、贴体封存技术、玻璃防雾技术、电化学保护防腐及维修保养等各种防腐与密封技术的特点,进而探讨各种防腐技术与密封在沿海工程船中的综合应用。     

基于ARM与单目立体的自主水下机器人导向结构优化

传统的自主水下机器人导向结构防腐性能差,运行角速度低。针对上述问题,基于ARM与单目立体对自主水下机器人导向结构进行优化,密封水下机器人的各个主要部件,通过外包角皮管密封连接线连接部件与部件,设定导向结构、混合样条曲线的边界、获得形体曲面、确定三维实体来实现结构优化,引入机械装置优化导向结构。实验结果表明,基于ARM与单目立体的自主水下机器人导向结构优化方法能够很好地提高水下机器人的运行角速度,增强防腐能力。本研究对于确保自主水下机器人在水下正常运行有积极促进作用。     

海洋型双馈风力发电机机座密封及表面防腐工艺研究

对海洋气候环境进行了分析,对海洋型双馈风力发电机的机座密封及表面防腐进行研究,通过实验确定了海洋型风力发电机的机座密封工艺和表面防腐工艺,为提高了海洋型双馈风力发电机的可靠性,并延长使用寿命提供了技术支持.     

水下管道连接器设计研究及应用

随着全球海洋石油天然气开发从浅水走向深水,由于潜水员下潜深度有限,海底油气管道的连接必须通过水下机器人代替潜水员完成此项工作。因此各种管道连接技术也越来越多地应用于海洋石油开发中。水下管道连接器作为一种重要的自动安装连接装置,涉及到机械、液压、材料、防腐、密封等各个方面,具有免潜水员操作、安装便捷、可靠性高等特点,可广泛应用于水下油气管道连接。本文对已成功应用于南海某气田中水下采气树跨接管连接的水平机械式管道连接器和水下管汇发球器连接的垂直液压式管道连接器,从密封结构、导向结构、锁紧结构的设计进行了深入的阐述,并在连接器样机型式试验、产品防腐、水下安装等方面也进行了详细的说明。     

某船艉轴机械密封轴面腐蚀原因及修理措施

文章介绍了某船艉轴机械密封装置内部轴面出现严重腐蚀的情况,在对机械密封装置结构、腐蚀部位环境、原防护措施情况及腐蚀产物等方面进行综合分析的基础上,研究了腐蚀因素及腐蚀原因。并针对腐蚀环境因素及电偶腐蚀因素,提出涂覆专用防护胶就地硫化成膜的保护方法,并根据艉轴表面的状况和无法抽出艉轴修理的情况,提出了原位修理技术措施。     

港口工程无粘结预应力连续梁设计及施工

概述港口工程无粘结预应力连续梁的设计、施工及质量保证措施,特别提出预应力构件端部防腐保护措施.通过采用分段预制、分段张拉施工工艺,解决大跨度预应力混凝土连续结构的水上施工的技术难点;梁端部采用有粘结筋等防腐措施,确保端部结构安全.     

热喷涂技术在船体结构防腐中的应用

介绍了热喷涂技术的基本原理、喷涂方法及特征,重点介绍了船体结构热喷涂技术的防腐机理、工艺流程以及经济性分析,展望了热喷涂技术在船体结构防腐中的广阔应用前景和巨大潜力.     

重力式沉箱结构防腐设计的分析

介绍重力式沉箱结构防腐设计的思路，并结合施工具体情况提出采用低强度高性能混凝土并结合透水模板及海工防腐涂料的防腐措施，在经济、合理的前提下提高重力式码头结构耐久性。     

环氧树脂涂层钢筋在马迹山港工程中的应用

重点介绍在建中的马迹山港的结构防腐设计，结合防腐技术措施及环氧树脂涂层钢筋在工程中的应用。     

高速救助船尾轴密封装置漏水原因分析及处置

本文通过对MJP750型尾轴密封装置的结构及工作原理的介绍,分析了该装置泄漏的原因及解决方法,并提出了改进措施及管理要点。     

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。