深水陡波形立管的力学性能及参数敏感性分析

Mechanical Performance and Parameter Sensitivity of Deepwater Steep-Wave Riser

以某深水陡波形布局的立管为研究对象,基于柔性杆理论,建立立管运动方程,编写相应程序,进行立管力学性能计算,并将结果与专业海工软件Orca Flex的计算结果进行对比,验证其正确性与精度。再利用编写的程序对立管陡波形布局下总体布置参数进行参数敏感性分析,得到浮力因子、浮子段长度、浮子段初始位置及海流对立管初始位形、弯矩及有效张力的影响,可以为陡波形立管的总体布置设计提供参考。

Motion equations of a steep-wave riser are established by using the model of slender rods. A calculation program is written to analyze the mechanical performance of the riser. The calculation result is compared with that by the software OrcaFlex to make sure the correction and precision of the presented method. Sensitivity analysis of layout parameters, including the buoyancy factor, length of the buoyancy catenary and the initial location of the buoyancy catenary, is performed. Influences of these parameters on the static configuration, bending moment and the effective tension are investigated, which may provide a reference for the design of underwater steep-wave risers.