Quasi-static three-dimensional analysis of suction anchor mooring system
Quasi-static three-dimensional analysis of suction anchor mooring system
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DOI：
10.1016/j.oceaneng.2010.05.002
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发表时间：
2010-09
影响因子：
5
通讯作者：
Lizhong Wang;Zhen Guo;F. Yuan
中科院分区：
文献类型：
--
作者：
Lizhong Wang;Zhen Guo;F. Yuan
吸力锚作为一种经济有效的解决锚固问题的方法，已被广泛应用于张紧或半张紧的系泊系统中。为了保证高可靠性，必须准确地设计连接绳索和垫眼的系泊缆索的外形。然而，以往的研究很少考虑锚索在土壤中的滑移对系泊性能的影响，或者在海床假设张力的情况下研究埋入的锚索。将悬索和埋入土壤中的拉索视为单一拉索，分别建立了拉索在先张法和在役状态下的二维静力模型和三维准静力模型。这两个模型考虑了洋流、土壤阻力和缆索弹性的综合影响，所有这些都对系泊系统的设计至关重要。利用该模型对三个算例进行了分析，得出了一些有益的结论。
The suction anchor has been widely used in taut or semi-taut mooring systems as an effective and economical solution to anchoring problems. To ensure high reliability, the profile of the mooring cable connecting the fairlead and the pad-eye must be accurately designed. However, previous studies have rarely considered the effect of cable slippage in soil on the mooring behavior, or embedded cables have been studied with an assumed tension at the seabed. This paper, by treating the cable suspended in water and the cable embedded in soil as a single cable, presents a two-dimensional (2D) static model and a three-dimensional (3D) quasi-static model for the cable during pretensioning and in service, respectively. The two models take into account the comprehensive effects of ocean currents, soil resistance and cable elasticity, all of which are critical for the design of a mooring system. Three examples are analyzed using the models and some useful conclusions are drawn.