新概念张力腿平台水动力性能分析

张力腿平台对水深具有高度敏感性,随水深变化,垂直面内的运动受到显著影响。对于超深水情况,对张力筋腱的设计提出更高的要求。为了改善这一状况,提出了一种新概念张力腿平台设计方案——Tension Based Tension Leg Platform(TBLP),它可以成倍地增加TLP适用的水深范围。对于已经使用的中等水深下的传统型的TLP,通过增加张力基底,就可以将其使用于更深的海域。针对这一新型TBLP概念,对典型的传统型TLP和TBLP水动力性能进行了初步分析比较,得出TBLP优于常规设计的水动力性能。

Hydrodynamic Analysis of Newly Designed TLP

TLP is highly sensitive to water depth and the motions in vertical plane (heave, roll and pitch) will be influenced by water depth significantly. For ultra-deep water, it also requires more adaptive tension leg and risers design to satisfy demand of strength criterion. To breaking through the limit of water depth for TLP, some authors have proposed a new conceptual design of TLP, named Tension Base TLP (TBLP), which can dramatically increase the capacity of adaptability of water depth. For a conventional TLP, it can be transformed to be a TBLP by establishing a tension base (TB) moored on the sea bed. Focusing on this newly designed TBLP, this paper preliminarily analyses the hydrodynamic performance and superiorities of TBLP compared to conventional TLP.