张力腿平台局部系泊失效下复杂运动响应机理研究

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振动与冲击 ›› 2021, Vol. 40 ›› Issue (10) : 187-195.

论文

成司元1,2，余杨1,2，余建星1,2，郝帅1,2，吴静怡1,2，张春迎1,2，康煜媛3

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Mechanism of the complex motion response of a TLP under tendon failure

CHENG Siyuan1,2,YU Yang1,2,YU Jianxing1,2,HAO Shuai1,2,WU Jingyi1,2,ZHANG Chunying1,2,KANG Yuyuan3

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摘要

针对浮体-系泊系统非线性耦合系统，采用数值模拟的时域分析方法对张力腿平台局部系泊失效下的复杂运动响应的机理进行研究，重点分析了两根筋腱同时失效下的垂荡运动平衡位置、运动幅值和运动响应中的非线性成分。结果表明：波浪载荷作用下的垂荡平衡位置与静水中的平衡位置相同，平衡位置的改变取决于筋腱张力和刚度的改变；筋腱完整和单根筋腱失效情况下，平台在规则波0°浪向下的垂荡为线性运动，在两根筋腱同时失效的情况下，垂荡为非线性运动；非线性成分与波高关系密切，波高越大，非线性成分越明显；辐射力和系泊力对平台非线性运动的贡献最为突出。

Abstract

Aiming at the strong nonlinear coupling property of the hull-mooring system, the time-domain numerical simulation analysis was carried out to study the mechanism of complex motion responses under the local mooring failure of a tension leg platform (TLP).The balance position, motion magnitude and nonlinear components in the heave motion response under simultaneous failure of two tendons were emphatically analyzed.The results show that the equilibrium position of heave motion under wave loading is the same as that in calm water.The change of the equilibrium position depends on the change of the tension and stiffness of tendons.In the case of the complete tendon and the failure of single tendon, the heave motion of the platform under regular wave at 0° is a linear motion, while in the case of the simultaneous failure of two tendons, the heave motion is a nonlinear motion.The nonlinear components are closely related to the wave height.The higher the wave height is, the more obvious the nonlinear components are.The radiation force and mooring force contribute most to the nonlinear motion of the platform.

导出引用

成司元1,2，余杨1,2，余建星1,2，郝帅1,2，吴静怡1,2，张春迎1,2，康煜媛3. 张力腿平台局部系泊失效下复杂运动响应机理研究[J]. 振动与冲击, 2021, 40(10): 187-195

CHENG Siyuan1,2,YU Yang1,2,YU Jianxing1,2,HAO Shuai1,2,WU Jingyi1,2,ZHANG Chunying1,2,KANG Yuyuan3. Mechanism of the complex motion response of a TLP under tendon failure[J]. Journal of Vibration and Shock, 2021, 40(10): 187-195

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