有护面块体掩护的斜坡堤弧形胸墙波压力研究

弧形胸墙可以有效减小斜坡堤越浪、降低胸墙顶高程,因此越来越多地在工程中采用。但在规范中对斜坡式防波堤弧形胸墙波压力计算方法没有明确规定。结合工程实例,将弧形胸墙波压力物理模型实测结果与现行规范直立胸墙波压力计算结果进行对比分析,总结了该工程防波堤弧形胸墙在有掩护条件下所受的波压力情况,供工程设计参考。     

斜坡式防波堤护面对胸墙波浪力的影响

在设有胸墙的斜坡式防波堤设计计算中,作用于胸墙上的波浪力取值对计算结果影响非常大.关于斜坡式建筑物顶部胸墙上波浪力的计算,在交通部颁布的现行行业标准JTJ 213-1998<海港水文规范>及JTJ298-1998(防波堤设计与施工规范>中有所规定,但与一些工程的物模试验实测结果有较大差别.通过物模试验实测数据,总结分析了胸墙在有掩护条件下的波浪力折减情况,供设计参考.     

带1/4圆弧面胸墙的沉箱防波堤的波浪力研究

基于带1/4圆弧面胸墙的沉箱防波堤的波浪水槽物理模型试验,通过对试验中获取的堤身及上部结构波浪压力数据的分析,得出波浪作用下防波堤水平力、胸墙竖向力和防波堤基底浮托力的分布特性,并通过对试验结果的计算分析,提出对合田公式的修正方法,该修正公式适用于带1/4圆弧面胸墙的沉箱防波堤的波浪力计算。     

波高取值对斜坡堤胸墙结构设计影响的探讨

斜坡堤堤顶设胸墙是常用的防浪结构型式，在已建的工程中胸墙顶高程一般定在不低于设计高水位以上1．0倍设计波高处，而交通部1998年发布的《防波堤设计与施工规范》JTJ298－98对于设计波高值注释的不明确给设计带来一定的困惑，本文通过波浪断面模型试验结果，分析波高取值对胸墙结构设计的影响，并提出有关计算参数的建议。     

大圆弧防浪墙在防波堤工程中的应用

为了有效降低斜坡堤的顶高程,同时又不降低抗御波浪爬高的标准,常在堤顶设置防浪墙。大圆弧防浪墙首次 在国内的防波堤工程中应用,节约工程投资并增强墙身的景观效果。对实际工程进行断面物理模型试验,通过实测越浪量 与规范计算结果对比,进一步验证在防波堤工程中采用大圆弧防浪墙具有一定的经济型和合理性。     

中英规范斜坡式防波堤护面块体设计对比研究

以斜坡式防波堤护面块体设计为例,将英国规范BS 6349.7—1991《防波堤设计和施工指南》与中国规范JTS 154-1—2011《防波堤设计与施工规范》内容进行对比,分析两者在计算及构造要求中存在的异同,并通过典型工程实例加以说明,得到一些有益结论供涉外工程参考。     

削角直立堤断面稳定性及波浪力分析试验研究

通过模型试验观测波浪作用下削角直立堤断面的稳定性、堤顶越浪情况及削角直立堤受力情况,并与依据《海港水文规范》和《防波堤设计与施工规范》计算的波浪力理论值进行了对比分析,结果表明,上部结构采用削角型胸墙的直立堤具有减轻波浪水平压力,增加竖向压力,提高堤身稳定的优点。并通过实测波浪力的合成总力计算,得出了削角直立堤断面整体稳定。     

台山防波堤工程损坏调查分析

通过对台山防波堤工程工地现场踏勘和工程测量,并根据现场损坏情况和有关资料分析研究,认为造成这次防波堤部分损坏的主要原因是本次台风的潮位和波浪均大于规范设计标准,从而在防波堤胸墙处产生的波浪力大于设计标准值而使胸墙发生位移。     

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。     

1／4圆弧面胸墙沉箱防波堤可靠度分项系数

1／4圆弧面胸墙沉箱防波堤是一种适合于深水港的新型防波堤。文章首先利用修正的合田良实波浪力公式计算防波堤堤身波浪力分布特性;考虑作用在防波堤堤身的波浪力之间、波浪力矩之间相关性,采用考虑相关变量的可靠性分析方法,基于工程海域实测波浪数据,针对不同工况下的防波堤,确定该类型结构的可靠指标、失效概率。对应于我国现行安全度水平,提出各荷载的分项系数建议值,以及深水1／4圆弧面胸墙沉箱防波堤的抗滑移、抗倾覆破坏的设计表达式。为其结构设计提供理论依据。     

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

正~~     

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.