深海半潜式平台与系泊系统动力耦合的边界约束效应研究
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摘要
深海浮式平台与其系泊系统的耦合作用显著,在数值分析中,需要合理确定二者耦合边界的模拟方法。本文以深水半潜式钻井平台及其系泊系统为研究对象,将浮体与系泊之间复杂的连接边界简化为固接、铰接和弹簧连接三种边界约束模型,提出了弹簧连接中相关参数的确定方法,并将不同边界约束下系缆张力的计算结果与模型试验数据进行对比验证。通过算例分析,探讨不同边界约束对平台运动、系缆张力及其疲劳损伤的影响,给出设计分析的选择建议。
The coupling effect between a floating platform and its mooring system is remarkable in deep water.In the numerical analysis,the simulation methods of the coupling boundary need to be determined reasonably.This paper investigates the coupling effect between a semi-submersible drilling platform and its mooring system in deep water,and simplifies the complex connection boundary to fixed,hinge and spring connections.The selection method of related parameters in the spring connecting is proposed.The numerical results of mooring line tension under different boundary constraints are validated by experimental data,and by the analysis of numerical examples,the influences of different boundary constraints on platform motion,mooring line tension and fatigue damage are discussed.The choice suggestions of boundary constraints in numerical simulations are recommended.
The coupling effect between a floating platform and its mooring system is remarkable in deep water.In the numerical analysis,the simulation methods of the coupling boundary need to be determined reasonably.This paper investigates the coupling effect between a semi-submersible drilling platform and its mooring system in deep water,and simplifies the complex connection boundary to fixed,hinge and spring connections.The selection method of related parameters in the spring connecting is proposed.The numerical results of mooring line tension under different boundary constraints are validated by experimental data,and by the analysis of numerical examples,the influences of different boundary constraints on platform motion,mooring line tension and fatigue damage are discussed.The choice suggestions of boundary constraints in numerical simulations are recommended.
引文
[1] Tcheou G.Nonlinear Dynamics of Mooring Lines[M].Boston:MIT,1997.
[2] Ma W,Lee M Y,Zou J,et al.Deepwater Nonlinear Coupled Analysis Tool[C].Houston:United States.Offshore Technology Conference,2000:12085.
[3] Lee M Y,Devlin P,Kwan C T T.Development of API RP 2SM for Synthetic Fiber Rope Moorings[C].Houston:United States.Offshore Technology Conference,2000:12178.
[4] Yang M,Teng B.Static and dynamic analysis of mooring lines by nonlinear finite element method[J].China Ocean Engineering,2010.24(3):417-430.
[5] Kim M H,Zheng W.Hull/Mooring Coupled dynamic analysis of a truss spar in time domain[J].International Journal of Offshore and Polar Engineering,2001.11:42-54.
[6] De Kat J O,Dercksen A.The influence of wave spectrum formulation on the dynamics of a turret-moored tanker[J].Journal of Offshore Mechanics and Arctic Engineering,1994.116(1):7-13.
[7] Ran Z,Kim M H.Nonlinear coupled responses of a tethered spar platform in waves[J].International Journal of Offshore and Polar Engineering,1997.7(2):111-118.
[8] Chen X H.Studies on Dynamic Interaction Between Deep-water Floating Structures and Their Mooring/Tendon Systems[D].Texas:Phd thesis,A&M University,2002.
[9] Y M Low,R S Langleyb.Time and frequency domain coupled analysis of deepwater floating production systems[J],Applied ocean research,2006(28):371-385.
[10]肖越.系泊系统时域非线性计算分析[D].大连:大连理工大学,2005.Xiao Yue.Non-Linear Time-Domain Analysis and Calculation for Moored Systems[D].Dalian:Dalian university of technology,2005.
[11]易丛.Spar平台系缆张力及垂荡运动响应分析[D].天津:天津大学,2007.Yi Cong.Analysis of Cable Tension And Heave Motion for Spar Platforms[D].Tianjin:Tianjin university,2007.
[12]赵文斌.Spar平台水动力载荷及垂荡-纵摇耦合运动分析[D].天津:天津大学,2007.Zhao W B.Analysis of hydrodynamic loads and coupled heavepitch motion for Spar platform[D].Tianjin:Tianjin university,2007.
[13] Petter Andreas Berthelsen.Dynamic response analysis of a truss spar in waves[D].Newcastle:University of Newcastle,2000.
[14] Johansson P I.A Finite Element Model for Dynamic Analysis of Mooring Cables[D].Boston:MIT,1976.
[15] Zhang X,Zou J.Coupled effects of rise/supporting guide frame on spar responses[J].Proceedings of the 12th International Offshore and Polar Engineering Conference.2002,231-236.
[16]元志明,嵇春艳,陈明璐.半潜式平台完全时域耦合运动分析[J].海洋技术,2010,29(4):81-87.Yuan Z M,Ji C Y,Chen M L.Full Time Domain Coupled Analysis of Semi-submersible Platform[J]. Marine Technology,2010,29(4):81-87.
[17]王兴刚.深海浮式结构物与其系泊缆索的耦合动力分析[D].大连:大连理工大学,2011.Wang X G.Coupled Dynamic Analysis of Deepwater Floating Structure and the Mooring System[D].Dalian:Dalian University of Technology,2011.
[18]杨敏冬.深水浮式结构与系泊/立管系统的全时域非线性耦合动态分析[D].大连:大连理工大学,2012.Yang M D.Full Time-Domain Nonlinear Coupled Dynamic Analysis of Deepwater Floating Structures and Mooring/Riser Systems[D].Dalian:Dalian university of technology,2012.
[19]袁梦.深海浮式结构物系泊系统的非线性时域分析[D].上海:上海交通大学,2011.Yuan Meng.Time Domain Nonlinear Analysis of the Mooring System of Deep-water Floating Structures[D].Shanghai:Shanghai Jiao Tong University,2011.
[20]徐胜.半潜式平台运动耦合分析方法及水动力模型试验研究[D].镇江:江苏科技大学,2012.Xu Sheng.Study on The Coupled Analysis method of Semi-submersible and hydrodynamic model tests[D].Zhenjiang:Jiangsu University Of Science and Technology,2012.
[21]赵志娟.多筒式FDPSO概念设计及水动力性能研究[D].天津:天津大学,2012.Zhao Z J.Concept Design and Research on the Hydrodynamic Performance of a Multi-Cylindrical FDPSO[D].Tianjin:Tianjin university,2012.
[22] Du J,Wang S,Chang A,et al.An investigation on low frequency fatigue damage of mooring lines applied in a semi-submersible platform[J].Journal of Ocean University of China,2016,15(3):438-446.
[23] DNV,Fatigue Strength Analysis of Offshore Steel Structures[S].DNV-RP-C203.2001.
[24] DNV,Offshore Standard Position Mooring[S].DNV-OS-E301.2010.
[2] Ma W,Lee M Y,Zou J,et al.Deepwater Nonlinear Coupled Analysis Tool[C].Houston:United States.Offshore Technology Conference,2000:12085.
[3] Lee M Y,Devlin P,Kwan C T T.Development of API RP 2SM for Synthetic Fiber Rope Moorings[C].Houston:United States.Offshore Technology Conference,2000:12178.
[4] Yang M,Teng B.Static and dynamic analysis of mooring lines by nonlinear finite element method[J].China Ocean Engineering,2010.24(3):417-430.
[5] Kim M H,Zheng W.Hull/Mooring Coupled dynamic analysis of a truss spar in time domain[J].International Journal of Offshore and Polar Engineering,2001.11:42-54.
[6] De Kat J O,Dercksen A.The influence of wave spectrum formulation on the dynamics of a turret-moored tanker[J].Journal of Offshore Mechanics and Arctic Engineering,1994.116(1):7-13.
[7] Ran Z,Kim M H.Nonlinear coupled responses of a tethered spar platform in waves[J].International Journal of Offshore and Polar Engineering,1997.7(2):111-118.
[8] Chen X H.Studies on Dynamic Interaction Between Deep-water Floating Structures and Their Mooring/Tendon Systems[D].Texas:Phd thesis,A&M University,2002.
[9] Y M Low,R S Langleyb.Time and frequency domain coupled analysis of deepwater floating production systems[J],Applied ocean research,2006(28):371-385.
[10]肖越.系泊系统时域非线性计算分析[D].大连:大连理工大学,2005.Xiao Yue.Non-Linear Time-Domain Analysis and Calculation for Moored Systems[D].Dalian:Dalian university of technology,2005.
[11]易丛.Spar平台系缆张力及垂荡运动响应分析[D].天津:天津大学,2007.Yi Cong.Analysis of Cable Tension And Heave Motion for Spar Platforms[D].Tianjin:Tianjin university,2007.
[12]赵文斌.Spar平台水动力载荷及垂荡-纵摇耦合运动分析[D].天津:天津大学,2007.Zhao W B.Analysis of hydrodynamic loads and coupled heavepitch motion for Spar platform[D].Tianjin:Tianjin university,2007.
[13] Petter Andreas Berthelsen.Dynamic response analysis of a truss spar in waves[D].Newcastle:University of Newcastle,2000.
[14] Johansson P I.A Finite Element Model for Dynamic Analysis of Mooring Cables[D].Boston:MIT,1976.
[15] Zhang X,Zou J.Coupled effects of rise/supporting guide frame on spar responses[J].Proceedings of the 12th International Offshore and Polar Engineering Conference.2002,231-236.
[16]元志明,嵇春艳,陈明璐.半潜式平台完全时域耦合运动分析[J].海洋技术,2010,29(4):81-87.Yuan Z M,Ji C Y,Chen M L.Full Time Domain Coupled Analysis of Semi-submersible Platform[J]. Marine Technology,2010,29(4):81-87.
[17]王兴刚.深海浮式结构物与其系泊缆索的耦合动力分析[D].大连:大连理工大学,2011.Wang X G.Coupled Dynamic Analysis of Deepwater Floating Structure and the Mooring System[D].Dalian:Dalian University of Technology,2011.
[18]杨敏冬.深水浮式结构与系泊/立管系统的全时域非线性耦合动态分析[D].大连:大连理工大学,2012.Yang M D.Full Time-Domain Nonlinear Coupled Dynamic Analysis of Deepwater Floating Structures and Mooring/Riser Systems[D].Dalian:Dalian university of technology,2012.
[19]袁梦.深海浮式结构物系泊系统的非线性时域分析[D].上海:上海交通大学,2011.Yuan Meng.Time Domain Nonlinear Analysis of the Mooring System of Deep-water Floating Structures[D].Shanghai:Shanghai Jiao Tong University,2011.
[20]徐胜.半潜式平台运动耦合分析方法及水动力模型试验研究[D].镇江:江苏科技大学,2012.Xu Sheng.Study on The Coupled Analysis method of Semi-submersible and hydrodynamic model tests[D].Zhenjiang:Jiangsu University Of Science and Technology,2012.
[21]赵志娟.多筒式FDPSO概念设计及水动力性能研究[D].天津:天津大学,2012.Zhao Z J.Concept Design and Research on the Hydrodynamic Performance of a Multi-Cylindrical FDPSO[D].Tianjin:Tianjin university,2012.
[22] Du J,Wang S,Chang A,et al.An investigation on low frequency fatigue damage of mooring lines applied in a semi-submersible platform[J].Journal of Ocean University of China,2016,15(3):438-446.
[23] DNV,Fatigue Strength Analysis of Offshore Steel Structures[S].DNV-RP-C203.2001.
[24] DNV,Offshore Standard Position Mooring[S].DNV-OS-E301.2010.