【作者】 栾茂田； 曲鹏； 杨庆； 郭莹；

【Author】 LUAN Mao-tian~(1,2),QU Peng~(1,2),YANG Qing~(1,2),GUOYing~(1,2) (1.State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China; 2.Institute of Geotechnical Engineering,School of Civil and Hydraulic Engineering,Dalian University of Technology,Dalian 116024,China)

【机构】 大连理工大学海岸和近海工程国家重点实验室； 大连理工大学土木水利学院岩土工程研究所；

【摘要】 确定波浪荷载作用下海底埋置管线和海床的响应是海底管线设计中的关键问题。目前大多数研究只是考虑了管线、海床在线性推进波作用下的响应,并没有考虑管线与海床之间的相互作用效应。采用接触摩擦理论,考虑管线与海床之间的相互作用效应,基于有限元方法研究了非线性波浪作用下海底埋置管线和多孔海床相互作用问题。数值计算结果表明,在计算中如果忽略波浪非线性项,既有可能低估海底管线内应力及管线周围海床中孔隙水压力,也有可能高估海底管线内应力及管线周围海床中孔隙水压力。更多还原

【Abstract】 It is a key issue to define the transient responses of submarine pipeline and seabed under wave loading in the design of submarine pipeline.Most previous investigations were only concerned with the soil response due to linear progressive ocean waves, and the effect of pipeline-seabed interaction on internal stresses within the pipeline are not well recognized.The pipeline-seabed interaction under nonlinear wave loading is investigated by using friction contact theory and the finite element method.Numerical results demonstrate that if the effect of non-linear wave components is neglected,the internal stresses in the pipeline and pore pressure in the seabed may be underestimated or overestimated probably.更多还原