17500吨货船“海建”号轴系主机安装工艺

本文主要介绍我厂建造的17500吨多用途出口货船“海建”号的轴系、主机实船安装经验,其中包括主机生产厂(日本三井玉野造机造船厂)提供的技术服务项目和安装经验。     

对新造船主机和轴系安装调整的一点见解

此文以中远5400TEU集装箱船主机和轴系的安装调整为例，浅述了主机和轴系的安装步骤和检查要点，分析了理论设计和实际安装中的一些差异；简单介绍MAN-B&W公司对主机安装的一些要求和造船厂的一些实际经验。     

海底放流管铺设安装工程施工技术探讨

以旅顺海下放流管安装工程为例，介绍了深海管道安装设备和施工方法，为类似工程的施工积累了经验。     

曹妃甸矿石码头一期工程长94 m质量680 t钢管混凝土拱桥安装

介绍了曹妃甸矿石码头一期工程栈桥上部结构——钢管混凝土拱桥的安装过程,重点介绍了在渤海湾外海环境下首次采用整体海上远距离运输和整体安装施工工艺,为海上整体安装大型重钢构件提供可借鉴的施工经验。     

新型Core-Loc防护块体的安装施工技术

结合巴基斯坦卡拉奇集装箱深水港防波堤的工程实践,重点介绍新型CORE-LOC防护块体的基本特点和安装施工要求,简单说明本项目防波堤护面块体的安装施工方案和安装施工中采用的GPS-RTK定位技术,总结施工经验和心得体会,可供其他同类防波堤工程参考。     

深海钢悬链线立管（SCR）安装强度分析

在研究深水钢悬链立管（SCR）安装方法基础上,结合实际工程安装经验,提出了深水SCR在J-lay这种铺管方式下的安装方案,应用专业立管安装分析软件Orcaflex对各个安装过程进行实例分析,对安装过程中立管的安装强度进行校核。     

S-VDR的特点及其安装

根据SOLAS公约的要求,S-VDR已经进入在航船舶的全面安装阶段,此文介绍S-VDR的组成、特点并根据实船安装经验,介绍了S-VDR的安装过程。     

加强用水计量管理促进计划用水节约用水

本文通过对计量设施安装管理工作的分析,重点介绍了取水计量设施安装管理工作中的主要工作经验,总结了连云港市计量设施安装管理工作取得的成效,指出计量设施的安装管理,有效推进了计划用水节约用水工作。     

对双挂机转向联动机构的技术改造

本文介绍了小型快艇挂机安装过程中遇到的双机转向联动机构的安装问题及解决方案，为双机或多部挂机的转向联动机构的安装形式开创了新思路，提出可供借鉴的经验。     

某型运输船减摇鳍装置安装工艺研究

减摇鳍装置用以提高船舶海上工作能力,其安装工艺和质量控制直接影响设备性能及航行安全。在借鉴以往船舶建造经验基础上,某型运输船进行减摇鳍安装工艺创新并成功应用。文章对该船减摇鳍的交货状态、安装准备、吊装和就位、定位和焊接及其他部件安装等方面进行研究,阐述如何有效地控制质量、提高精度。     

Decentralized Coastal Zone Management in Malaysia and Indonesia: A Comparative Perspective 1

Transferring decision-making process from central to local government and enhancing the role of local communities in managing coastal zones is an increasing commitment by governments in Southeast Asia. This article analyzes decentralized coastal zone management in two neighboring countries, Malaysia and Indonesia. The Federal system in Malaysia is argued to be able to influence more decentralized coastal zone management and to promote community-based management approaches. Meanwhile, the large diversity of coastal resources and communities combined with a still as yet tested decentralization policy in Indonesia is argued to bring more challenges in implementing the decentralization and community-based approaches in coastal zones. The lessons learned in this study provide insight in how far decentralized coastal zone management has taken place in Malaysia and Indonesia. The significant differences in the pattern of coastal zone management in these two countries are discussed in detail. This study recognizes that co-management and community-based approaches can be appropriate in dealing with coastal zone management. This comparative perspective is important to the development of a bigger picture of sustainable coastal zone management processes and cross-regional knowledge-sharing in Southeast Asia.     

可伸缩式海工栈桥分类详解

介绍了可伸缩式海工栈桥的主要功能和分类,功能上分为主动补偿和被动补偿型以及其他类型,用途上分为油气行业和风电运维行业应用,尺寸上可分为小型、中型和大型,今后的分类的方法会更加科学和合理,为我国各类可伸缩海工栈桥研发的标准化、系列化提供依据。     

An analysis of trends in passenger and freight transport energy consumption in India

This primary objective of this paper is to examine the causes for the change in energy consumption in the transport sector in India. The pattern of energy consumption and their causes for change are benchmarked against select countries. A mathematical model that decomposes changes in energy consumption to various factors has been used. The changes in the energy consumption are attributed to growth in transport volume, structural change or modal shift, and energy intensity. The analysis is conducted for passenger and freight transport separately. Results indicate that the growth in transport volume has been the main cause for increase in energy consumption for both passenger and freight transport in India despite the decline in energy intensity of various transport modes. Though not surprising for a growing economy like India, this poses a challenge for the future. Currently, India is a low carbon economy.     

土工合成材料在堤坝工程中的应用

通过分析近年来土工合成材料在长江口深水航道、洋山港、太仓港、吕四港、宁波港、曹妃甸等具有代表性的堤坝工程中的应用情况,系统总结了土工合成材料在堤坝工程中的应用经验,可对同类工程有所借鉴.     

Intrusions of eastern North Atlantic central waters and phytoplankton in the north and northwestern Iberian shelf during spring

The influence of intrusions of eastern North Atlantic central water (ENACW) in the north and northwestern Iberian shelf on phytoplankton composition and abundance and on particle-size distributions of seston was analyzed using data collected on three extensive cruises during spring 1991 and 1992. Water with temperature and salinity values between 12.20 and 13.86 °C and between 35.66 and 35.98 psu, respectively, characteristics of the subtropical type of ENACW (ENACW_t), was detected in the upper 100 m of the water-column in all cruises, but particularly in the western coast in 1992. The highest salinity values of this water were found near the surface (0–100-m depth) and in early spring 1992, while minimum salinity values, and also minimum geographical extension, were found in late spring in both years. Phytoplankton blooms concentrated in frontal areas between different water types, with maximum intensity and extension in early spring.Using temperature and salinity characteristics, samples were classified in four groups corresponding to the major water types found in the region: Bay of Biscay central water (BBCW), two segments of ENACW of different salinity and surface water influenced by continental runoff. This classification was significantly confirmed by three independent discriminant analyses using hydrographic and chemical (dissolved nutrients and chlorophyll) variables, phytoplankton species abundance variables and particle-size concentration of seston variables. Phytoplankton blooms related to the presence of saline waters were characterized by the dominance of either chain-forming diatoms or a mixture of diatoms and phytoflagellates and high concentrations of seston. The diatom species dominating in saline waters were typical of upwelling-induced blooms occurring generally during summer. Blooms occurring in waters influenced by runoff also contained diatoms but in lower numbers than those of saline waters. Nutrients were not exhausted in the region, suggesting that phytoplankton populations were still in active growth. These results are interpreted taking into account the known variability in water-mass formation and in the poleward current driving ENACW_t along the shelf, and indicate that saline intrusions are a major feature affecting the distribution and composition of plankton in the spring in the southern Bay of Biscay, thus enlarging to a wider spatial scale their reported influence on the pelagic ecosystem.     

危险货物集装箱水上运输风险与管理对策

随着海上运输方式的不断发展,集装箱运输以其安全、高效、便利、快捷的优点,赢得市场青睐。近年来,海运危险货物不断呈现出集装化和散装化趋势,集装箱运输的危险货物量越来越多,事故发生率在逐年增加。文中以现有的法律、法规和规范为依据,结合实际工作经验,阐述了危险货物集装箱水上运输的安全监管对策。     

Exploring the effects of passenger rail franchising in Britain: Evidence from the first two rounds of franchising (1997-2008)

This paper provides an up-to-date review of the previous literature concerning the impact of passenger rail franchising on productivity and costs in Britain, and also presents important new evidence. In particular, the extension in time of previously-used datasets offers the first opportunity to study the impacts of re-franchising. The previous literature emphasised the failure of franchising to produce sustained productivity gains, with a sharp deterioration in productivity after 2000. The new evidence presented offers a somewhat more positive view of the British experience. It suggests that part of what was previously considered to be falling productivity may in fact be due to exogenous changes in diesel prices. Further, new data suggests that the recent increases in costs have resulted in higher quality of service. Finally, competitive re-franchising, and the associated unwinding of short-term management and re-negotiated contracts, seems to have led to improvements in productivity between 2006 and 2008. Nevertheless, it remains the case that passenger rail franchising in Britain has failed to reduce costs in the way experienced in many other industries and in rail in other European countries. The evidence is that somewhat larger franchises, avoiding overlapping and optimising train density and length, should reduce costs. We also speculate that the major increase in wages and conditions of staff might be moderated by longer franchises, although that remains to be proved. This re-appraisal of the British case is important in the context of the wider international interest in the use of franchising in passenger rail, and its relevance to the current review of ways of introducing competition into the domestic rail passenger market in Europe.     

风浪中螺旋桨水动力变化的实用计算方法

风浪中螺旋桨水动力变化规律是研究舰船在风浪中速航性能的重要方面。本文参照有关文献,提出了一种计算风浪中螺旋桨推力、转矩损失的实用定量计算方法,既可用于较精确地估算舰船在风浪中的增阻和失速,还可供提高舰船在风浪中速航性的研究和螺旋桨设计参考。     

RTG的发展趋势

随着大型现代集装箱码头和智能化堆场的发展 ,RTG要保持它目前在集装箱堆场的竞争力 ,就必须不断地进行改进和技术创新 ,尤其要尽快提高其智能化水平 ,进一步降低其操作成本 ,逐步的向大型化、自动化和节能化方向发展。     

航道护岸工程中基槽边坡稳定研究

航道护岸工程中经常发生基槽边坡滑坡失稳事故，从而造成经济和安全问题。因此，就滑坡发生机理进行研究对保障航道护岸工程顺利建设有重大意义。从极限平衡原理出发，分别运用Fellenius法和Bishop法验算了苏北某航道护岸工程开挖边坡的设计稳定性，并分析比较两种方法的差异，得出了在多层土的计算中有时会出现Fellenius法比Bishop法的安全系数略大的结论。结合工程实际中可能出现的渗流和超载等因素，计算得到边坡安全系数的变化规律和极限平衡状态时的临界负荷，从而提出了相应的预防渗流、控制超载等措施，可以为航道护岸建设提供参考。