基于三维势流理论的浮托驳船安装设计  

Installation Design of Floating Barge Based on Three-Dimensional Potential Flow Theory

作　　者：周绪强 ZHOU Xuqiang(Salvage Technology Development Center,Yantai Salvage Bureau,Ministry of Transport,Yantai 264012,Shandong,China)

机构地区：[1]交通运输部烟台打捞局打捞技术开发中心,山东烟台264012

出　　处：《中国海洋平台》2022年第5期62-68,共7页China offshore Platform

摘　　要：在三维势流理论的基础上通过边界条件和控制方程分析流体入射势、辐射势、绕射势等3种速度势,引入悬链线法和集中质量法建立关于浮托安装进船、浮托安装退船、驳船就位停泊等3个阶段的驳船船缆耦合运动模型。当波浪方向为270°时停泊就位阶段最大系泊缆张力达176.67 t,对应的系泊缆为左舷艉部,此时安全因数最小(2.16),系泊缆设计张力为185.20 t。在进船阶段艉部系泊缆张力在3个阶段依次减小,舯部和艏部系泊缆张力在3个阶段依次增大。集中质量法求得的和MOSES软件得到的进船和退船系泊缆张力误差分别为2.3%和5.6%。研究设计的浮托驳船安装系泊运动计算模型适用于不同工况下的系泊缆张力。Based on the three dimensional potential flow theory,three kinds of velocity potentials such as the fluid incident potential,radiation potential and diffraction potential are analyzed through the boundary conditions and control equations,and the catenary method and concentrated mass method are introduced to establish the barge cable coupling motion model for the three stages of the floating installation ship entering,floating installation ship exiting and barge in place and berthing.When the wave direction is 270°,the maximum mooring line tension reaches 176.67 t during the barge in place and berthing stage,and the corresponding mooring line is the port tail.At this time,the safety factor is the minimum of 2.16,and the design tension of the mooring line is 185.20 t.The tension of the tail mooring line decreases in three stages,while the tension of the middle and head mooring lines increases in three stages.The tension errors of the mooring line for ship entering and exiting are 2.3% and 5.6%,respectively obtained by concentrated mass method and MOSES software.The research and design of the mooring motion calculation model for floating barge installation is applicable to the mooring line tension under different working conditions.

关 键 词：浮托驳船 安装 三维势流理论 集中质量法 

分 类 号：U674.183[交通运输工程—船舶及航道工程]