余 杨 ,赵 宇,张振兴,吴 晗 , 李振眠 ,张 阳 ,傅一钦
AuthorsHTML:余 杨 ^{1, 2, 3}，赵 宇 ^{1, 2, 3}，张振兴 ⁴ ，吴 晗 ⁵， 李振眠 ^{1, 2, 3}，张 阳 ⁴ ，傅一钦 ^{1, 2, 3}
AuthorsListE:Yu Yang ,Zhao Yu,Zhang Zhenxing,Wu Han, Li Zhenmian,Zhang Yang,Fu Yiqin
AuthorsHTMLE:Yu Yang ^{1, 2, 3}，Zhao Yu^{1, 2, 3}，Zhang Zhenxing⁴，Wu Han⁵， Li Zhenmian^{1, 2, 3}，Zhang Yang⁴，Fu Yiqin^{1, 2, 3}
Unit:1. 天津大学水利工程仿真与安全国家重点实验室，天津 300072；
2. 天津大学天津市港口与海洋工程重点实验室，天津 300072；
3.北部湾大学机械与船舶海洋工程学院，钦州 535011；
4. 海洋石油工程股份有限公司，天津 300072；
5. 中国科学院力学研究所流固耦合系统力学重点实验室，北京 100190

Unit_EngLish:1. State Key Laboratory of Hydraulic Engineering Simulation and Safety，Tianjin University，Tianjin 300072，China；
2. Tianjin Key Laboratory of Port and Ocean Engineering，Tianjin University，Tianjin 300072，China；
3. College of Mechanical and Marine Engineering，Beibu Gulf University，Qinzhou 535011，China；
4. Offshore Oil Engineering Co.，Ltd.，Tianjin 300072，China；
5. Key Laboratory for Mechanics in Fluid Solid Coupling Systems，Institute of Mechanics， Chinese Academy of Sciences，Beijing 100190，China

Abstract_Chinese:单浮筒段的缓波型柔性立管存在着局部张力或者弯矩过大的情况，并且有着位型拱起过高等问题．针对单 浮筒段的缓波型柔性立管存在的这些问题，对多浮筒段的缓波型柔性立管进行研究，基于 Fortran 通过向量式有限 元(VFIFE)法建立了缓波型柔性立管的数学模型，并且通过改变浮筒段的数量、浮筒段的间距、浮筒段的单位浮 力、部分浮筒段的浮力损失、海流的速度、浮筒段的位置对多浮筒段的缓波型立管进行静力计算，分析上述条件的 改变对静力平衡状态下的缓波型立管的影响；并在实际海况下模拟出悬挂点垂荡激振，对悬挂点垂荡激振下的多浮 筒段缓波型立管开展响应特性研究，分析了管段中部的最大弯矩、悬挂点处的最大有效张力以及速度分量的整体动 态分布变化．发现在不改变浮筒段单位浮力的情况下，仅通过调整浮筒段数量、间距或者位置是无法同时降低立管 顶部的最大有效张力与立管中部的最大弯矩的．除此之外，立管的整体构型也需要进行考虑．只有兼顾浮筒段数 量、间距以及位置这三者对立管中部的最大弯矩、悬挂点处的最大有效张力以及立管的整体构型的影响才能获得缓 波型立管的最优布局；同时还发现，随着浮筒段数量的增加，多浮筒段缓波型立管能够更好地限制立管的纵向运 动，这对限制立管的疲劳损伤有一定的现实意义．
Abstract_English:A lazy-wave riser with a single-buoy section has problems. For example，its tension or bending moment is too large in some places and the axch of riser is too high. To solve these problems，the vector form intrinsic finiteelement(VFIFE)method is adopted to build a mathematical model to analyze a lazy-wave riser with multi-buoy sections using Fortran. We changed the number and unit buoyancy of the buoy sections，the distance between buoy sections，the current speed，and the position of the buoy sections and simulate the loss of the buoy sections. Then，we conducted static analysis. We also determined the hang-off point of vertical harmonic motion to simulate the real sea environment. Then，we analyzed the maximum bending moment and effective tension of the riser. Finally，we ana\u0002lyzed the velocity component of the entire riser. Results showed that it is impossible to reduce the maximum effective tension at the top of the riser and the maximum bending moment in the middle of the riser by adjusting the number， distance，or position of the buoy sections without changing the unit buoyancy of the buoy sections. The overall configuration of the riser also needs to be considered. We should consider the influence of the number，distance，and position of the buoy sections on the maximum bending moment，maximum effective tension，and overall configuration of the riser to obtain the optimal lazy-wave riser layout. The results also showed that，with the increase in the number of buoy sections，the lazy-wave riser with multi-buoy sections can better limit the vertical movement of the riser，which has a certain practical significance for limiting the fatigue damage of the riser.
Keyword_Chinese:缓波型柔性立管；多浮筒段；向量式有限元；静力分析；动力分析
Keywords_English:lazy-wave riser；multi-buoy section；vector form intrinsic finite element(VFIFE)；static analysis； dynamic analysis

PDF全文下载地址:http://xbzrb.tju.edu.cn/#/digest?ArticleID=6636