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首页> 外文会议>International Symposium on Deepwater Mooring Systems: Deepwater Mooring Systems: Concepts, Design, Analysis, and Materials; 20031002-20031003; Houston,TX; US >Integrated Design of Risers and Moorings
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Integrated Design of Risers and Moorings

机译：立管和系泊的集成设计

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摘要

This paper describes the use of coupled analysis for integrated design of riser and mooring systems. Coupled analysis, which includes the mooring lines, risers and vessel in a single model, is required to accurately account for interaction effects. For example, lateral loads on the vessel from the risers, which can be of the same order as extreme environmental forces, must be resisted by the mooring system. Stiffness and drag-induced damping effects due to the risers can also be significant. Accounting for the interaction effects should lead to more efficient designs. Integrated riser and mooring design requires a substantial amount of analysis early in the design cycle. Consequently, the analysis method must be both accurate and efficient. We describe a fully coupled, frequency domain analysis method that provides the required accuracy and efficiency. Integrated design of mooring and risers is illustrated with an example: an FPSO moored in deep water offshore W. Africa with 16 mooring lines and 20 steel catenary risers (SCRs) installed in stages. An important aspect of the example is that it includes consideration of riser fatigue life in the integrated mooring and riser design. This is accomplished by calculating SCR fatigue life as a function of mooring pretension. This illustrates how a mooring may be designed based on SCR performance rather than on an arbitrary vessel offset limit.
机译：本文介绍了耦合分析在立管和系泊系统集成设计中的使用。需要进行耦合分析，其中包括单个模型中的系泊缆，立管和船只，以准确考虑相互作用的影响。例如，系泊系统必须抵抗来自立管的船只侧向载荷，该载荷可以与极端环境力相同。冒口引起的刚度和阻力引起的阻尼效应也​​很重要。考虑相互作用的影响应导致更有效的设计。集成的立管和系泊设计需要在设计周期的早期进行大量分析。因此，分析方法必须既准确又有效。我们描述了一种完全耦合的频域分析方法，该方法可提供所需的准确性和效率。举例说明了系泊和立管的一体化设计：FPSO系泊在W.Africa深水区，分阶段安装了16条系泊缆线和20个钢悬链式立管。该示例的一个重要方面是，它在集成式系泊和立管设计中考虑了立管疲劳寿命。这是通过计算SCR疲劳寿命作为系泊预紧力的函数来实现的。这说明了如何根据SCR性能而不是基于任意的船只偏移极限来设计系泊设备。

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