Coupled analysis of floating structures with a new mooring system
Coupled analysis of floating structures with a new mooring system
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DOI：
10.1115/omae2011-49597
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
Zhiming Yuan;C. Ji;Ming-lu Chen;Y. Zhang
中科院分区：
文献类型：
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作者：
Zhiming Yuan;C. Ji;Ming-lu Chen;Y. Zhang
随着油气资源开采向深水方向发展，浮式结构物越来越受到人们的青睐，悬链式和张拉式系泊系统是目前应用最广泛的两种浮式结构物系泊系统。然而，两者都有其固有的缺陷。这项工作的目的是开发和验证一种新的系泊系统，它将克服这些缺点。为此，采用全时域耦合分析方法对半潜式平台的运动性能进行了仿真。结果表明，与张力式系泊系统相比，新的系泊系统具有很好的运动性能，并对其原因进行了讨论。同时，新的系泊系统与悬链式系泊系统的特点相适应，取消了对锚杆抗拔能力的要求。本文的第二个目的是探索采用这种新系泊系统的合适水深。为此，对几种典型的水深进行了模拟。结果表明，这种新型系泊系统在深水和超深水中都能很好地发挥作用。但是，随着水深的加深，新的系泊系统的优势就会降低。版权所有©2011，ASME
As the exploitation of hydrocarbon reserves moves towards deeper waters, the floating structures are becoming more and more popular, and the catenary and taut mooring systems are two widespread mooring systems which are used for these floating structures. However, both of them have their inherent drawbacks. The aim of the present work is to develop and validate a new mooring system which will overcome these shortcomings. To this end, the motion performance of a semi-submersible platform is simulated by employing a full time domain coupled analysis method. It is shown that the new mooring system yields very good motion performance when benchmarked against the taut mooring system, and the reasons for this improved performance are discussed. Also, the new mooring system is compatible with the characteristic of catenary mooring system, which eliminates the requirement of anti-uplift capacity of the anchors. The second aim of this paper is to explore the proper water depth in employing this new mooring system. For this purpose, several typical water depths are simulated. It is found that the new mooring system works well both in deep water and ultra-deep water. But, as the water depth becomes deeper, the advantages of the new mooring system are reduced.Copyright © 2011 by ASME