深水SCR触地区管-土相互作用试验研究进展  

Review of experimental research on the interaction of deepwater steel catenary risers with seafloor

作　　者：白兴兰[1,2] 姚锐[2] 段梦兰[1] 李强[2] 

机构地区：[1]中国石油大学(北京)海洋油气研究中心,北京102249 [2]浙江海洋学院船舶与海洋工程学院,浙江舟山316004

出　　处：《海洋工程》2014年第5期107-112,共6页The Ocean Engineering

基　　金：国家自然青年科学基金资助项目(51109185);中国博士后基金资助项目(2013M530847);海洋工程国家重点实验室(上海交通大学)开放课题资助项目(1204);浙江省公益项目(2013C33065);舟山市科技计划项目(2012C23022);浙江省自然科学基金资助项目(LY12E09005)

摘　　要：与海床的相互作用是钢悬链线立管特有的性质,是传统立管发展中不曾遇到的问题,也是控制立管疲劳寿命的主要因素,特别是触地区出现的峰值弯曲应力和管土接触模型的不确定,成为SCR触地区研究的难点。由于立管与海床的作用机理非常复杂,因此管土相互作用模型的提出大多是建立在模型试验的基础上。通过对国内外深水SCR触地区管土相互作用试验研究案例的分析,简要介绍了SCR触地点的动态响应取决于一系列参数,如海床土刚度、加载状况、立管的提升速度、土的重塑时间和土吸力等,并设计了一套三维管-土相互作用的试验装置,能够为深水钢悬链线立管触地区管-土相互作用的试验研究提供参考。The interaction of SCR with seafloor is the nature of SCR＇ s own compared with others. The fatigue life of a steel catenary riser （SCR） near its touch-down zone （TDZ） is substantially affected by its interaction with seabed. The touchdown zone attracts the worst bending stresses and is subject to the greatest uncertainties, such as those arising from the riser-seabed contact. Because the mechanism for the pipe/soil interaction is very complex, the model of the pipe/soil interaction is mostly proposed on the basis of model tests. In this paper, some experimental cases are outlined to show the pipe/soil interaction of deepwater SCR in China and foreign countries, and it is briefly introduced that the dynamic response of SCR at TDZ depends on a series of parameters, such as seabed soil stiffness, condition of load, pull up velocity, length of consolidation time and soil suction. Finally, the proposed viewpoint provides a reference approach for the experimental research on the interaction of deepwater SCR with seabed.

关 键 词：钢悬链线立管 触地点 模型试验 动态响应 疲劳分析 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]