复杂海底边界对悬链式锚链系泊系统动力响应的影响  

Influence of Complex Seabed Boundary on Dynamic Response of Catenary Mooring System

作　　者：杨洪彪 YANG Hongbiao(Bureau Veritas,Shanghai 200011,China)

机构地区：[1]必维船级社(中国)有限公司,上海200011

出　　处：《中国海洋平台》2025年第2期59-66,共8页China offshore Platform

摘　　要：针对复杂海底边界对悬链式系泊系统的影响,基于集中质量法提出高效准确的系泊系统动力响应分析算法,基于海底倾角和锚链节点位置研究海底拖地锚链支持力和摩擦力计算方法,进而建立倾斜和坑洼的海底边界构型,用以模拟大范围倾斜和局部坑洼两种复杂海底形貌。对比分析系泊锚链在不同海底地形条件下的形状和张力变化规律,探究海底边界的影响机理和作用效果。结果表明,海底地形对系泊锚链产生影响的本质原因在于锚链触地点区域的海底倾斜程度。此外,还发现锚链顶端运动对海底边界影响存在一定的促进作用,运动幅度越大海底地形的影响越显著。In view of the influence of complex seabed boundary on the suspension chain mooring system,an efficient and accurate dynamic response analysis algorithm is put forward for the mooring system based on the idea of lumped mass method,the calculation method of the support force and friction force of the seabed towing anchor chain is researched based on the seabed inclination angle and chain node position,and the seabed boundary configuration is established to simulate two complex seabed features,wide-ranging tilt and local potholes.The change rule of the shape and tension of the mooring anchor chain under different seabed topographical conditions is compared and analyzed,and the influence mechanism and effect of seabed boundary are explored.The results show that the essential reason for the influence of seabed topography on the mooring anchor chain is the degree of subsea tilt in the area where anchor chain touches.In addition,it is found that the motion at the top of the anchor chain is of certain effect on the influence of the seabed boundary,and the greater the movement,the more significant the influence of the seabed topography.

关 键 词：系泊锚链 复杂海底边界 集中质量法 动力响应分析 动张力 

分 类 号：P75[天文地球—海洋科学]