某直立式护岸挡浪墙顶高程设计与验证

顶部设置弧形返浪墙的直立式护岸的堤顶越浪量相对于不设弧形返浪墙的情况小,挡浪墙顶高程设计值可降低。以某直立式护岸挡浪墙顶高程设计为例,按照现行相关规范进行挡浪墙高程计算,然后根据相关文献提出的经验公式进行越浪量计算,为了确定最为经济、合理的挡浪墙顶高程,采用物理模型试验进行越浪量验证,对物模试验的实测越浪量及经验公式计算越浪量进行对比分析,最终确定弧形返浪墙顶高程。     

某帆船基地斜坡式防波堤挡浪墙稳定性设计及验证

挡浪墙稳定性计算在带挡浪墙的斜坡式防波堤结构设计中非常重要,关键在于挡浪墙上波浪力取值。斜坡堤上挡浪墙波浪力按《港口与航道水文规范》计算,与物模试验实测结果有较大差异,尤其是在平均波周期10s以上的海域。基于第19届亚运会帆船基地防波堤设计,通过规范计算值与断面物理模型试验数据的对比分析,合理确定挡浪墙型式和尺度等重要设计参数。充分运用试验手段对挡浪墙波浪力做出了有益的探索,为斜坡式防波堤的设计改进提供了借鉴。     

不规则波作用下斜坡堤越浪量试验研究

通过物理模型试验,研究不规则波作用下挡浪墙顶高度、宽平台长度及高度、波高和消浪墩等因素对越浪量的影响,发现挡浪墙、平台和消浪墩对减小越浪量有较好的作用。将现有计算越浪量公式值与实际物模试验值进行比较,推荐了越浪量计算方法。     

港珠澳大桥珠澳口岸人工岛填海工程海堤越浪量的优化设计

为安全可靠地降低防浪墙顶高程,在分析国内外规范对越浪量标准界定的基础上,为港珠澳大桥珠澳口岸人工岛填海工程海堤拟定了运营工况、设计工况和校核工况这3种工况组合和相应的允许越浪量标准,结合物理模型试验,对海堤越浪量进行优化设计,使人工岛地面与挡浪墙之间的高差减少到人体正常身高范围,可为过境旅客提供海天一色的景观视线。     

港珠澳大桥珠澳口岸人工岛填海工程海堤越浪量的优化设计

为安全可靠地降低防浪墙顶高程,在分析国内外规范对越浪量标准界定的基础上,为港珠澳大桥珠澳口岸人工岛填海工程海堤拟定了运营工况、设计工况和校核工况这3种工况组合和相应的允许越浪量标准,结合物理模型试验,对海堤越浪量进行优化设计,使人工岛地面与挡浪墙之间的高差减少到人体正常身高范围,可为过境旅客提供海天一色的景观视线。     

带挡浪墙斜坡堤在满足越浪要求下的高程优化试验研究

采用反弧形挡浪墙可以降低越浪量,但受力加大;越浪量随堤顶高程增高而降低,为在较低的高程满足越浪量和稳定性的要求,应用波浪断面物理模型试验,对L型挡浪墙和反弧形挡浪墙、不同的挡浪墙顶高程和斜坡坡度,以及增加挡浪墙前护面块体数量即肩台宽度等措施进行了对比研究。成果表明,反弧形挡浪墙容易倾覆失稳,增加挡浪墙前肩台宽度可以减少越浪并增强挡浪墙的稳定性。且根据研究成果总结,提出了在工程上常采用的减少越浪措施,可为工程设计提供参考。     

基于Fluent斜坡海堤挡浪墙受力特性数值计算研究

海堤是沿海地区防潮减灾体系中重要建筑物,文章以通州湾腰沙围垦二期通道工程为例,采用Fluent软件流体体积法模型构建数值波浪水槽,对海堤工程挡浪墙波浪力进行数值模拟,重点分析与研究直立型和半圆弧型挡浪墙随水深、波高、波长等参数变化时,挡浪墙迎浪面波压力分布以及波浪力大小变化规律。研究表明半圆弧挡浪墙具有反向挑浪减小墙顶越浪作用,同时墙体承受的波浪力明显大于直立型挡浪墙,在最不利水位及波要素组合下,半圆弧挡浪墙面承受的波浪力增大幅度为30%,为减少墙顶越浪量,大型岸外沙洲围堤工程采用半圆弧型挡浪墙是较好选型。     

涌浪条件下斜坡式防波堤越浪量的对比分析

海外港口工程大部分位于以涌浪为主的海域,涌浪对防波堤的作用未得到全面认识。越浪量一直是斜坡堤设计中需要重点考虑的问题,其直接关系到结构的安全和使用。以某一具体港口防波堤工程为例,对其防波堤进行了波浪断面和局部整体试验,研究涌浪作用下斜坡堤(单坡、无挡浪墙)的平均越浪量,并与计算结果进行对比分析。研究结果表明:1)断面试验和局部整体试验结果表明斜坡堤越浪量随着波浪周期的增大而增大,而国内规范公式计算结果随着波浪周期的增大而减小。2) EurOtop公式越浪量计算结果不考虑波浪周期的影响; ANN(人工神经网络)方法越浪量计算结果也随着波浪周期的增大而增大。3)总体上,ANN方法越浪量计算结果与物理模型试验结果的吻合程度均明显好于国内规范公式和EurOtop公式计算结果。     

宽平台生态景观海堤结构稳定性试验验证

针对宽平台生态景观海堤结构稳定计算突破规范适用范围的问题,开展了物理模型试验验证。首先根据使用需求确定海堤设计的主要功能;其次通过理论计算挡浪墙、护面块体稳定及波压力值,初步确定海堤设计断面;最后根据波浪模型试验验证设计断面,对比分析理论计算与试验数据。试验结果表明：宽平台生态景观海堤堤顶挡浪墙与堤脚距离宜大于1.5倍波长,堤顶越浪量较小,背海面可种植绿化,挡墙稳定验算基本可忽略波浪力作用。距离堤脚1倍波长位置,护面块体应选择稳定可靠的形式,消浪作用显著。研究成果为宽平台生态海堤设计提供试验验证及合理建议。     

祥芝渔港挡浪墙顶高程与港内泊稳条件的研究

通过对防波堤挡浪墙顶高程计算和物模试验研究,分析挡浪墙顶高程的取值及其对湾内海域渔船泊稳条件的影响。     

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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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。     

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）.     

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。     

Catalyzing Coastal Management in Kenya and Zanzibar: Building Capacity and Commitment

Site-based projects were initiated in Chawka Bay-Paje, Zanzibar, and Nyali-Bamburi-Shanzu, Kenya, to demonstrate the benefits of an integrated coastal management (ICM) approach for addressing coastal issues such as tourism development and enhancement of resource-dependent village economies in eastern Africa. A two-year, multidonor project used three primary strategies to make rapid, but sustainable, progress toward ICM. These included using interagency government teams for ICM planning, adopting an internationally recognized framework for ICM as a project ''road map,'' and explicitly incorporating capacity-building strategies into all aspects of the project. Within two years, integrated ICM action strategies, prepared through participatory processes, were being implemented at both sites, and both teams were working to expand the scale and scope of ICM in their nation. More importantly, the project helped create committed, capable, interagency groups that continue to work together to address urgent ICM issues.