近岛礁浅水环境下浮式平台系泊系统设计研究

基于有限水深格林函数、Morison公式和时域耦合动力分析方法,以一近岛礁半潜式生产生活平台为研究对象,分析了传统系泊方式(悬链线式和张紧式)和桩柱式系泊方式下平台的运动和系泊系统动力响应。结果表明,通常应用在中深水海域的传统系泊方式,在近岛礁浅水环境下使用时会出现一系列的问题,且进一步优化的空间较小。而文中提出的新型桩柱式系泊系统,很好地解决了传统系泊方式在浅水中存在的问题,且使得船舶的停靠变得更加便利。该文中的分析结果可为平台的水池模型试验和浅水环境下浮式平台系泊系统的进一步设计提供参考。

Investigations on mooring system design for a floating platform in shallow water near islands and reefs

Based on the finite water depth Green function, Morison equation and coupled dynamic analysis method, dynamic response analysis was performed for a semi-submersible platform in very shallow water with different types of mooring systems. The results show that traditional catenary or taut mooring systems, usu-ally adopted for medium or deep water depth, will encounter a range of problems in very shallow water near islands and reefs, and the room for further optimization is very limited. But, the pile-post mooring system proposed in this paper can overcome these problems, and at the same time, makes ship docking much more convenient. The analysis results in this paper have certain guiding significance for model tests and further design of mooring systems in very shallow water.