河口海岸扁平管袋裸坝稳定性计算方法研究  

Research on Stability Calculation Method of Flat Geotube Embankment

作　　者：刘欣欣[1] 束一鸣[1] 尹家春 张浩栋 吴海民[1] 

机构地区：[1]河海大学水利水电学院,江苏南京210098 [2]中交上海航道局有限公司,上海200136

出　　处：《人民黄河》2016年第7期114-118,共5页Yellow River

基　　金："十二五"国家科技支撑计划项目(2012BAB03B02)

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。Flat geotube embankments which constructed in estuary and coastal areas are prone to collapse due to these factors like waveparameters,tide level,near bed current velocity and wind speed in the process of construction. Based on present situation that the design andconstruction work of flat geotube embankment lacks of quantitative calculating method,firstly,factors which influence to the stability ofgeotube embankment were analyzed;then stability formulas of the structure were proposed corresponding to each factor;secondly,by usingthe proposed formulas,quantitative calculations of the stability of practical engineering were presented,then anti-wave stability coefficientcurves,incipient velocity curves of sediment and anti wind induced wave stability coefficient curves were obtained,by analyzing thesecurves,critical values of wave height and current velocity were obtained. All these results had provided a quantitative basis for the design andconstruction of engineering.

关 键 词：管袋坝 稳定 波浪 海流流速 风速 

分 类 号：U656.21[交通运输工程—港口、海岸及近海工程]