深海平台复合单系泊缆形状和张力分析

以一工作水深为310 m的转塔式浮式生产存储系统为例研究了复合单系泊缆索静力特性的计算方法,用C++编写了基于悬链线方程式的深海平台系泊缆形状和张力的分析计算程序,计算并分析了复合单缆在无浮筒重物、只有浮筒、只有重物、既有浮筒又有重物四种情况下的形状和张力,为动力计算提供条件。本方法简单直观,并且完成一次计算所耗时间不到1 s,特别适合于需要多次迭代计算复杂系泊系统静力特性的等效水深截断系统优化设计。

Analysis of Cable Shape and Composite Single Cable Tension for Platforms in Deep Sea

A turret moored FPSO in water depth of 310m was selected to investigate the computation method of static characteristics of single multi-component mooring line.Based on the catenary formula,the C++ program for analyzing the shape and tension of deep sea platform mooring line was developed.Four cases of shapes and tensions were calculated of the composite single line,including in wires and chains without clump or buoy,only buoy,only clump,both clump and buoy.This method is simple,intuitive,and computing time consuming,which is especially suitable for the equivalent water-depth truncated mooring system optimization design which requires many iterations of computing the static characteristics of complex mooring systems.