河口海岸扁平管袋裸坝稳定性计算方法研究

发布时间：2018-02-24 07:34

本文关键词： 管袋坝稳定波浪海流流速风速　出处：《人民黄河》2016年07期 　论文类型：期刊论文

【摘要】：位于河口海岸地带的管袋裸坝,施工期受波浪要素、潮位、风速和坝基变形等因素的影响容易发生失稳破坏,增加施工风险和成本。针对目前设计和施工中管袋坝稳定性判定缺乏定量计算方法的现状,从影响结构稳定的因素如波浪、潮位、海流流速和风速等入手,提出了相应的管袋裸坝结构稳定性的定量计算公式,并针对某围垦工程中管袋裸坝施工期的稳定性进行了定量计算,得到了抗波浪稳定系数曲线、泥沙起动流速曲线以及抗风浪稳定系数曲线,以此得到了波高、海流流速的临界值。
[Abstract]:The pipe bag bare dam located in the estuarine and coastal zone is vulnerable to instability and failure during construction due to the influence of wave elements, tidal level, wind speed and dam foundation deformation, etc. In view of the lack of quantitative calculation method to determine the stability of pipe-bag dam in design and construction, the factors influencing structural stability, such as wave, tide level, current velocity and wind speed, are analyzed. This paper puts forward the quantitative calculation formula of the structural stability of the barrel-bag bare dam, and calculates quantitatively the stability of the barrel-bag bare dam during the construction period of a reclamation project, and obtains the wave stability coefficient curve. The critical values of wave height and current velocity are obtained from the initial velocity curve of sediment and the stability coefficient curve of wind wave resistance.
【作者单位】：河海大学水利水电学院;中交上海航道局有限公司;
【基金】：“十二五”国家科技支撑计划项目(2012BAB03B02)
【分类号】：U656

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