考虑刚体转动的钢悬链线立管出平面运动分析  

ANALYSIS OF OUT-OF-PLANE MOTION OF SCRS WITH RIGID ROTATION

作　　者：刘娟[1,2] 黄维平[1] 

机构地区：[1]中国海洋大学山东省海洋工程重点实验室,山东青岛266071 [2]青岛农业大学建筑工程学院,山东青岛266009

出　　处：《工程力学》2014年第2期53-57,共5页Engineering Mechanics

基　　金：国家自然科学基金项目(51079136;51179179)

摘　　要：随着油气资源勘探和开发活动不断向深海发展,钢悬链线立管(SCRs)成为深海浮式生产系统油气输送的首选立管。该文在钢悬链线立管动力学模型研究中提出一种新模型:SCR刚体转动模型,该模型基于SCR悬垂段大曲率的考虑,假定立管为绕悬挂点与触地点连线形成的转动轴的刚体转动系统,并将该转动效应以惯性力和水动力阻尼的形式与立管弯曲振动耦合,进行立管的出平面运动分析。数值模拟算例表明,刚体转动效应对钢悬链线立管的动力响应具有较大影响,为立管动力分析中不可忽略的运动分量。With the exploration of oil and gas keeping into deep sea, Steel Catenary Risers （SCRs） become the preferred risers for the resource export. The dynamic model of SCRs is further discussed and a new model, named a rigid rotation model, is proposed. The model is based on the consideration of the large curvature of SCRs＇ static configurations and takes risers as rigid rotation systems about the axis from the hanging point to the touch down point （TDP）. The rigid motion is then coupled with the bending vibration as an inertial force and hydrodynamic damping, and the out-of-plane motion with the bending vibration and the rigid motion are simulated. The case studies show that the rigid motion of SCRs affects their dynamic response greatly and can not be ignored in their dynamic analysis.

关 键 词：钢悬链线立管 深水立管 动力分析 刚体转动 出平面运动 

分 类 号：TU318[建筑科学—结构工程]