新型深水串联浮筒锚泊线阻尼特性分析

摘要

Application of traditional catenary mooring is limited with the development of offshore oil and gas fields towards deep water and ultra-deep water.A new type of catenary mooring line with a submerged buoy is proposed.Optimal design procedure is introduced,and a dynamical model of the mooting line with buoy is established in time domain.The energy dissipation method is applied to calculate mooring-induced damping.Impact of buoy on the mooring line damping is analyzed through a numerical example.Moreover,sensitivity analysis on the parameters of buoy size and location is carried out.The results would provide reference to engineering design of the mooring system of floating platform.%随着海洋石油工业向深水及超深水领域的发展,传统悬链式锚泊线的使用受到限制.论文在传统悬链式锚泊线的基础上串联浮筒,优化设计出一种新型的串联浮筒悬链式锚泊线.首先,介绍新型串联浮筒锚泊线的优化设计过程;其次,在时域范围内建立串联浮筒锚泊线的动力分析模型,利用耗散能量法计算锚泊线阻尼;最后,结合算例分析串联浮筒对锚泊线阻尼特性的影响,并对浮筒大小和位置的影响进行参数化分析.研究结果对深水浮式平台锚泊系统的设计提供了一种新的参考选择.