深水工程船多点系泊海底链设计分析  

Design and Analysis of Bottom Chain for SpreadMooring Deep-water Working Ship

作　　者：徐田甜 张美荣[2] XU Tian-tian;ZHANG Mei-rong(CNOOC China Limited,Tianjin Branch,Tianjin 300459,China;China Offshore Oil Engineering Company,Tianjin 300451,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300459 [2]海洋石油工程股份有限公司,天津300451

出　　处：《船海工程》2022年第3期60-66,共7页Ship & Ocean Engineering

摘　　要：为确定深水工程船的系泊海底链嵌入土中的反悬链线形态,应用ARIANE7软件计算工程船的最大平面位移和系泊线的最大张力,确定能保证锚缆不接触海床的海底链在海床之上的长度。应用数值迭代求解控制微分方程分析海底链嵌入土中的反悬链线形态,确定吸力锚的安装位置和海底链的总长度;评估安装船拖拽海底链嵌入土中的安装工况所需触地点处的最小水平拉力,以确保海底链嵌入土中的效率。应用ORCAFLEX软件对起重船拖拽海底链安装工况进行静态和动态分析,校核绞车处和安装缆绳的最大动态拉力小于额定工作负荷,确保海上作业安全。In order to determine the shape of inverse catenary embedded in soil of the mooring chain for the deep-water engineering ship,the maximum working ship offset and mooring line tension was calculated by ARIANE7 software,and the bottom chain length above seabed which can ensure mooring wire will never be in contact with seabed was determined.The bottom chain inverse catenary shape embedded in soil was analyzed by numerical iterative solution of governing differential equations,so that suction pile position and total bottom chain length were determined.The installation vessel dragging bottom chain embedded into soil condition was assessed to predict the minimum required horizontal drag force at touch down point,so as to ensure the efficiency of bottom chain embedding in soil.The static and dynamic analysis of the crane vessel dragging bottom chain was carried out by ORCAFLEX software,the maximum dynamic tension at the winch and installation wire is less than its rated working load,so that the offshore operation is safe.

关 键 词：多点系泊 吸力锚 海底链 反悬链线 海上安装 

分 类 号：U662[交通运输工程—船舶及航道工程] P751[交通运输工程—船舶与海洋工程] TE54[交通运输工程—港口、海岸及近海工程]