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首页> 外文会议>International Shipbuilding Conference(ISC'2002) Section C; 20021008-20021010; St.Petersburg; RU >STRENGTH AND RELIABILITY OF FPSOs
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STRENGTH AND RELIABILITY OF FPSOs

机译：FPSO的强度和可靠性

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摘要

In this paper, some results from an ongoing research work aimed at developing a method for the rationalisation of failure surface equation for the reliability analysis of FPSO hull girder is presented. The structural reliability analysis of the FPSO is performed as a closed form solution so that the uncertainties of both capacity and loading of the structure can be taken into account. A simplified method is used for the ultimate strength analysis where the estimation of the longitudinal strength is carried out by dividing the cross section of the hull girder into beam column elements. The two loading components, wave induced and still water bending moments, are considered independently and Ferry Borges-Castenheta load combination method is used for to obtain the load combination factor. The Reliability analysis is carried out using Second Order Reliability Method (SORM) with improvements where the commercially available software, STRUREL, is used for this purpose. The results from the reliability analysis are described for both cases, hogging and sagging, considering the uncertainties for both capacity and loading on the hull structure.
机译：在本文中，提出了一些正在进行的研究成果，这些研究成果旨在为FPSO船体梁的可靠性分析开发一种用于破坏面方程合理化的方法。 FPSO的结构可靠性分析以封闭形式进行，因此可以考虑结构的承载力和载荷的不确定性。简化的方法用于极限强度分析，其中通过将船体梁的横截面划分为梁柱单元来估算纵向强度。分别考虑了波浪引起的弯矩和静水弯矩这两个荷载分量，并使用Ferry Borges-Castenheta荷载组合法来获得荷载组合因子。可靠性分析是使用二阶可靠性方法（SORM）进行的，其中经过改进，为此目的使用了商用软件STRUREL。考虑了船体结构的承载能力和载荷的不确定性，对两种情况下的拉力和垂度进行了可靠性分析的结果。

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