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<正>本刊从交通运输部天津水运工程科学研究院获悉,2014年8月26日,中国航海学会在天津主持召开了以交通运输部天津水运工程科学研究院为主要承担单位完成的《风暴潮浪与离岸深水结构相互作用研究》研究成果鉴定评审会。该项目针对离岸深水波浪强和地基土软弱等关键技术问题,通过数值模拟、物理模型试验、原型实验验证等技术手段和方法,开展了风暴潮浪与离岸深水结构相互作用研究,解析了考虑流固耦合作用的风暴潮浪荷载特性,揭示了离岸深水全直桩码头承载特性及破坏模式,创立了稳定性静力、动力 相似文献
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风暴潮是发生在海洋沿岸的一种严重的自然灾害,通常会伴有大浪,二者的耦合作用极大地威胁着沿岸地区的安全。以往对近岸承灾体海洋动力灾害的研究大多集中于单一致灾因子的影响,多采用恒定水位和定常波浪要素,对风暴潮与波浪耦合效应及其对海堤承灾体动力响应的研究不足。采用9711号台风在宁波北仑海域引起的风暴潮潮位及波浪过程,通过将连续的风暴潮水位变化过程与波浪过程进行叠加,模拟真实的动态潮位过程,在三维港池实验室中实现风暴潮和波浪的动态耦合模拟,为相关模型试验的开展提供参考。 相似文献
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《水道港口》2006,27(5):278-278
本刊从中交一航院获悉,由中交一航设计院和唐山港口投资有限公司联合完成的“遮帘式板桩码头新结构的设计与应用”和由一航院自主完成的“新型消浪块体开发与研究”两项开发成果不久前通过了专家鉴定。专家认为,遮帘式板桩码头新结构设计理念先进,结构新颖,创造了建造10万t级以上大型、深水板桩码头的条件,为原始自主创新,总体处于国际领先水平。经过离心模型试验和现场原型观测验证,专家认为“遮帘式板桩码头新结构的设计与应用”报告提出的设计理论和计算方法合理,结果可信,可用于今后该类结构的设计计算。“新型消浪块体开发与研究”推出的“双柱型”和“双联型”消浪块体,设计理念先进,块体结构新颖,为自主创新,总体上达到国际先进水平。“双柱型”消浪块体用于直立式岸壁,具有波浪作用下反射率小和结构稳定性高的优点,便于水上和陆上安装,且有较好的景观效果。 相似文献
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为研究深水养殖平台的水动力特性及其锚泊系统的安全性,以“振渔二号”深水养殖平台为例,开展物模试验和数值仿真计算。测试该平台在极限风速和流速下的外载荷作用力,并对其进行规则波频率运动响应试验和数值模拟,同时对其锚泊系统进行风、浪、流联合作用下的运动和系泊受力试验,获得该平台的水动力及其锚泊系统的受力特征值。物模试验和数值计算结果表明:忽略网衣的影响,纯波浪作用对平台运动的影响较小;在横风、横浪、横流作用下,锚泊系统最大受力对应的安全系数满足船级社相关指南的要求,有一定的安全裕度。研究成果可供深水养殖平台及其锚泊系统的优化设计和作业安全评估参考。 相似文献
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通过台风期间北仑港实测潮位、波浪资料统计分析,研究台风期间风暴潮增水特性和统计规律,采用概率统计理论研究风暴潮增水和波浪的相关性,建立风暴潮增水与波高的联合分布,提出考虑风暴潮影响的设计潮位、波浪组合的推算方法。 相似文献
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The Chesapeake Bay is vulnerable to severe flooding caused by hurricanes and strong Northeasters. A 3D storm surge model of the Chesapeake Bay is developed for studying the impact of model domain size, wind directions and Ekman transport on the storm surge in the Chesapeake Bay. The model encompasses the Chesapeake Bay and the US East Coast shelf to reduce the influence of model domain size on surge prediction inside the Chesapeake Bay and to account for both local and remote wind effects. This study used 3D model experiments, with respect to different wind directions, to diagnose the relative influences of the local and remote wind effects and Ekman transport on spatial surge distribution during storm events. The model results confirmed that spatial surge distribution can be well explained by the superposition of two distinct physically driven mechanisms during a storm event: incoming surge wave caused by remote effects and local wind forcings. A large model domain is a necessity for predicting storm surge accurately inside the Chesapeake Bay. The model results suggest that the interactions of the incoming surge propagating into the Bay and the local wind forcing from N and NE directions result in an enhanced setup in the lower to middle portions of the Bay, whereas the superposition of incoming surge and the local wind forcing from S and SE directions enhance the surge in the upper Bay region. A combined northwesterly wind over the middle to upper portions of the Bay and southwesterly wind over the lower Bay can cause a large setdown throughout the entire Bay. The Ekman setup along the coast contributes significantly to the water level variations during storm events. It enhances (reduces) surge inside the Bay under the wind forcings from N and NE (SW, S, and SE) directions. 相似文献
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Chyan-Deng Jan Chih-Ming Tseng Ji-Shang Wang Yun-Hsiang Cheng 《Journal of Marine Science and Technology》2006,11(3):193-200
The relation between typhoon surges and typhoon characteristics measured at Kenfang Tidal Station on the northeast coast of
Taiwan was studied in this paper. Typhoon characteristics include the typhoon center atmospheric pressure, the typhoon near-center
wind speed, the typhoon storm radius, the distance between the typhoon center and the tidal station, and the typhoon approach
tracks. The results show that the typhoon surge deviation is strongly dependent on typhoon characteristics. An empirical typhoon
surge formula is proposed in terms of the typhoon wind speed, the typhoon storm radius, and the distance between the typhoon
center and the tidal station. The coefficients in the empirical formula were evaluated, based on the measured typhoon surge
data at Kenfang Tidal Station. The storm surge deviations at Kenfang Station during Typhoons Doug (1994) and Herb (1996) estimated
using the proposed empirical formula were compared with the measured data as well as with the results of a numerical study. 相似文献
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采用曲线坐标系下的准三维近岸流波流耦合数值模型,采用边界适应曲线计算网格和两层嵌套方法,设计一套简单实用的天文潮预报系统,并引入风场以及考虑天文潮和风暴潮之间非线性作用的开边界水位,对2003年渤海发生的一次温带风暴潮进行模拟,计算结果与实测潮位吻合较好。 相似文献
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冷却水排水建筑物布置是滨海核电厂水工建筑物布置设计中的关键问题,排水建筑物不仅确保核电厂冷却水系统正常运行,同时保护核电厂免受风暴潮危害影响。通过对已建滨海核电厂冷却水排水建筑物布置特点进行分类阐述,为排水建筑物布置设计提供工程应用参考。 相似文献
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天津港深水港池泥沙淤积的分析计算 总被引:1,自引:0,他引:1
依推天津港大量的实测资料和现港口条件下淤积规律,通过类比方法,首次提出深水港池、泊地和转头地淤积计算公式,并在计算方法和深水港区合理布局等方面提供了思路. 相似文献