海底电缆铺设作业的数值仿真及工程应用

Numerical Simulation of Submarine Cable Laying Operation Method and Engineering Application

海底电缆在铺设的过程中受到海洋环境荷载的影响。为了保证海缆铺设作业的安全,需要对海缆铺设过程进行准确的受力分析,以确定可以接受的作业海况。基于OrcaFlex软件,建立了海底电缆铺设分析的“铺缆船 海缆 海床”耦合动力分析模型,并分析了海底电缆在海洋环境荷载作用下的动力响应。结果表明,海洋动力环境荷载对海底电缆的轴向拉力影响显著,且随着波高的不断增大,海缆轴向拉力呈非线性增长。在进行海缆铺设作业时,应重点关注,控制作业窗口。研究验证了海底电缆铺设作业数值模拟方法高效可行,研究方法和结果可为我国海底电缆的铺设分析工作提供参考。

Submarine cables are affected by environment loadings during the laying operation.In order to ensure the safety of the submarine cable during laying operation,accurate analysis is required to determine the dynamic response and acceptable sea conditions.Based on OrcaFlex software,a coupled vessel cable seabed dynamic analysis model was established,and the dynamic response of submarine cables was analyzed.The results show that the environmental loading has a significant influence on the axial tension,and as the wave height increases,the axial tension of the submarine cable increases nonlinearly.During the cable laying operations,it is important to control the operation window.This research shows that the proposed numerical simulation method is efficient and feasible for cable laying analysis,which can provide reference for the laying analysis of submarine cable in China.