深海单柱式平台及其系泊系统的截断水深模型试验

The Experiment of a Deepwater Spar and Its Mooring System at Truncated Water Depth

阐述了由水平截断引起的水深截断系泊系统的水平回复力特性难于在所有方向上与全水深保持一致的问题,提出了垂向截断因子γV、水平截断因子γH的概念,分析了水深截断系泊系统等效设计的难点.针对一工作在1.5 km水深的新型单柱式(Spar)平台,介绍了水深截断系泊系统设计流程,给出适合Spar平台特点的等效设计原则,提出了采用特殊装置延长张紧式系泊缆水平跨距的方法,解决了深海Spar平台及其系泊系统在现有水池进行截断水深模型试验的问题.

Hybrid model testing technique is one of the hot topics in research and development of deepwater platforms. It was found that the horizontal restoring force characteristics of truncated mooring system with horizontal truncation can not be reproduced as equivalent as that of full depth system in all directions. Concepts of vertical truncation factor γv and horizontal truncation factor γH were proposed, and the key of the truncated mooring system design was analyzed. Based on a spar platform operated in 1.5 km water depth, the procedure of truncated mooring system design was introduced. Considering the characteristics and the mooring type of the spar platform, the guidance of equivalent design was proposed and a method which can expand the span of truncated mooring system was presented. Deepwater model test was carried out in the present ocean engineering basin.