一航局三公司创新沉箱安装工艺

该公司沉箱安装作业原来采用的是传统的盲板施工工艺,由潜水员水下开关盲板,配合水面起重机安装沉箱。这种工艺作业时间长,工效低,安全隐患大。沉箱安装时,一个沉箱需2个潜水组分靠沉箱两边作业,常出现沉箱安装与基础整平相互矛盾的现象。于是,该公司改进了盲板开关办法,变水下     

重力式码头大体积沉箱的预制和安装

沉箱是重力式码头中常用的结构形式，一般以小型沉箱见多，但如11m×13m、高度22m的大体积沉箱并不多见。小型沉箱多数在预制场地预制，由起重船进行安装，相对来讲，预制沉箱的质量和安装正位比较容易解决，而大体积沉箱往往在半潜驳上进行预制，预制质量及安装正位问题则较难解决。本文就宁波液化石油气基地站码头大体积沉箱的预制和安装工艺，做一些简单的介绍。     

沉箱安装调平测量监控控制方法改进

沉箱码头是常用码头施工方法之一,而沉箱的安装工作由于工作周期厂且受海面风浪影响大,一直是施工中的重大难点。通过对沉箱安装过程中测量监控控制方法进行总结,提出了新的监控方法,可以有效的减少沉箱定位安装过程中测量人员的工作强度和准确性,希望对沉箱安装施工产生帮助。     

赤道几内亚巴塔港沉箱安装施工技术

重力式码头的整体感观质量取决于沉箱安装位置和施工准线的偏差。文内结合赤道几内亚巴塔港沉箱码头实际情况,介绍沉箱安装施工技术。     

超大型沉箱外海溜放与安装

码头的建设规模越来越大,沉箱向超大型发展,沉箱溜放和安装需起重船辅助.以青岛港董家口港区40万t矿石码头为例,介绍6000t超大型沉箱的溜放与安装.该工程的成功实践,为超大型沉箱的移运和安装提供了借鉴.     

重力式沉箱码头中沉箱安装施工及质量控制分析

重力式沉箱码头是码头工程建设过程中经常使用的一种结构,具有良好的结构整体性、抗震性等优点。本文结合实际案例,从重力式沉箱码头出坞、沉箱安装两个方面对沉箱安装施工进行了分析和探讨,并对施工过程中质量控制措施进行了探讨,顺利完成了沉箱安装施工,值得类似工程借鉴和参考。     

复杂海况条件下的大型沉箱出运及安装工艺技术

重力式码头工程施工的重点和难点是大吨位沉箱的出运和安装工艺,如何运用半潜驳和起重船在最短时间内完成沉箱出运和安装是码头成败的关键。文中介绍福州松下3#泊位工程沉箱出运、安装施工工艺。     

超大型沉箱出运与安装关键技术

研制成功胶囊车顶升运移大型沉箱出运工艺,将出运沉箱的质量从3 000 t提高到7 000 t,甚至10 000 t。青岛地区两项大型工程的成功实践,介绍了超大型沉箱出运、溜放下水和现场安装的关键技术,为超大型沉箱的出运与安装提供借鉴。     

异型沉箱拖运及安装工艺

为满足施工组织要求，通过对异型沉箱的浮游稳定计算、隔墙配筋计算及模型试验，确定沉箱拖运压舱物。使用手扳葫芦控位和钢架微调的组合替代起重船安装异型沉箱的工艺优化，提高了异型沉箱的安装效率，大幅度降低了施工成本。     

中型沉箱出运、安装方案

人们普遍认为采用半潜驳出运、安装超过2000 t的大型沉箱,采用浮吊船出运、安装低于500 t小沉箱较为适宜,而对500~2000 t之间的中型沉箱采用何种方案出运、安装并未有统一意见。通过广西北海LNG接收站陆域形成工程,从环境、经济、技术方面进行分析比较,提出采用大型浮吊船（起重船）配合平板方驳出运、安装中型沉箱的优越性,并探讨施工措施。     

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。