天津LNG接收终端取水口施工关键技术简析

钢筋混凝土半圆体结构在围埝工程和造陆工程中应用颇为成熟,因其自重较大,与周边原土地基长期作用形成较大吸附力,造成拆除已建半圆体结构的施工工艺较复杂。本文依托天津LNG接收终端项目取水口工程,结合该工程取水口布置方案,重点研究了水上钢筋混凝土半圆体的拆除及水下钢筋混凝土管涵的施工关键技术,经工程实施证明方案可靠,效果较好,可为类似工程提供参考。     

取水口与护岸工程一体化设计与施工

深海条件下填海造地成陆的LNG项目,一般先实施围闭护岸,再吹填经地基处理形成陆域,最后开挖嵌入取水口预制结构。这种施工工序造成了工期长、费用高、不环保等问题。通过BIM协同设计、提前确定取水口功能参数、合理调整施工工序,实现了取水口与护岸工程一体化设计与施工。一体化设计与施工在保证质量、安全、环保和进度的同时,也取得了良好的经济效益和社会效益,可为后续类似工程提供参考依据。     

疏浚工程淤泥质土质岸坡开挖方案优化

以天津临港经济区T7、T8、T9区补吹填工程为例,对岸坡特点和施工区土层结构进行分析,通过对传统施工工艺进行优化,使施工船舶能够高效地进行岸坡开挖施工。对施工过程进行阐述,为复杂地质条件下超长水下岸坡开挖工程提供解决方案。总结施工经验,进一步优化绞吸式挖泥船施工工艺。     

LNG接收站取水口设计及施工方案设计

本文全面系统地分析了天津某LNG项目配套码头工程取水口项目两个方案的形成过程、选择条件及优缺点,并详细地介绍了大开挖加桩基形成取水口管涵复合地基的设计要点及现场施工情况,为水运工程类似项目的实施提供了借鉴。     

施工技术措施在围堰吹填施工中的综合应用

<正>近年来,我国沿海水运工程市场中围堰结合吹填造地工程日益增多,在施工过程中,常会发现吹填与围堰施工相互干扰、互为约束的现象,如何利用施工技术措施尽量协调、避免两者间的矛盾?现以"厦门海沧14#～19#泊位岸壁基槽挖泥吹填与围堰工程"中16#～19#泊位围堰吹填分部工程为例,就如何综合应用施工技术措施协调围堰与吹填施工,从而实现工程顺利完成谈几点看法。     

绞吸式挖泥船采用分流管在工程实践中施工方法探究

本工程暨长江口北支新村沙水域河道综合整治工程围区吹填砂工程,与以往吹填工程不同的是在于管线的组合铺设上,首次采用岸上分流管接塑料管的形式吹填施工,主要是因为该施工水域正在进行大堤的护坡施工,为防止挖掘机损坏袋装砂棱体,业主要求岸管布设采用塑料管人工接管.同时本工程还有一个特点就是排距较近,初始排距在1km左右,只能采用...     

沃格尔法在疏浚吹填施工中的应用

文章旨在利用运筹学中的沃格尔法,对绞吸船疏浚吹填施工中的吹填排距进行优化管理,从而降低管线连接和拆除工作量,降低疏浚吹填成本提供理论指导。     

日照港吹填施工中污染物扩散数值分析

在海州湾日照港北区港口岸线退岸还海修复整治工程中,拟采用疏浚工程船舶在近海岸进行吹填施工形成黄金海岸,沙滩面积44.97万m2。针对吹填施工中海沙中的污染物会在海水中扩散而污染海洋环境的问题,对吹填过程中污染物的扩散进行预测。采用计算流体动力学（CFD）方法,就近海岸吹填施工中污染物扩散趋势进行数值模拟,分析污染物扩散情况,评价施工方案对海洋环境污染的风险。根据污染物扩散趋势及分析结果,提出防污屏布置方案。实践证明,在吹填工程中应用防污屏能够防止污染物扩散。     

自航耙吸式挖泥船艏吹施工工艺及效益分析

在黄骅港内航道、港池、泊位水域,采用自航耙吸式挖泥船艏吹施工工艺进行吹填施工,提高了效率,节约了成本,减少疏浚船舶施工与正常航行作业船舶之间的干扰,保证了进出港船舶正常运行。     

上海洋山深水港区三期工程接岸结构承台施工技术

上海洋山深水港依托外海岛礁地形通过填海造地形成港区,陆域吹填高度大,平均23～25m。洋山深水港区三期工程接岸结构接岸结构型式采用斜顶桩板桩承台结构。本文重点介绍接岸结构承台施工技术,并对施工要点及沉降位移情况进行分析总结,为类似工程台施工提供参考。     

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;     

33rd International Conference on Ocean,Offshore and Arctic Engineering （OMAE2014）

正San Francisco,California,June 8-13,2014.OMAE 2014 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;·to exchange ideas and experiences whilst promoting technological progress and its application in industry·to promote international cooperation in ocean,offshore and arctic engineering.In line with the tradition of excellence of previous OMAE conferences,more than 900 technical papers are planned for presentation.Outreach for Engineers Specialty Forum This Specialty Forum is designed for students and professionals who may not be familiar with the Ocean and Offshore industry,as well as those who have just recently specialized in this field.     

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。     

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.     

The 11th International Conference on Hydrodynamics (ICHD 2014)

正19–24 October 2014 SingaporeCONFERENCE THEMES The overall aim of the ICHD Conference is to provide a forum for participants from around the world to review,discuss and present the latest developments in the broad discipline of hydrodynamics and fluid mechanics.The first International Conference on Hydrodynamics(ICHD)was initiated in 1994 in Wuxi,China.Since then,9 more ICHD conferences were held subsequently in Hong Kong,Seoul,Yokohama,Tainan,Perth,Ischia,Nantes,Shanghai and St Petersburg.Evidently the ICHD conference has become an important event among academics,researchers,engineers and operators,working in the fields closely related to the science and technology of hydrodynamics.The 11th ICHD will be held in Singapore in 2014.     

第十二届深水操作会议和展览会(英文)

正November 4-6,2014Moody Gardens HotelConvention Center/Galveston,TX The Deepwater Operations Conference and Exhibition is celebrating its 12th anniversary this year.This growing event will continue the tradition of excellence in addressing operational challenges involved in developing deepwater resources.We will return to the Moody Gardens Hotel and Convention Center on November 5-7,2014 in Galveston,Texas.     

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）.     

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.