半潜式平台耦合动力响应分析

摘要

由于海洋这一特殊的环境，半潜式平台在海上会受到风、浪、流的联合作用，使得半潜式平台产生六自由度方向的运动，影响平台的作业，因此，进行平台运动响应预报及系泊线强度校核就显得尤为重要。本文选择在1000 m水深的情况下，分别在时域和频域条件下对半潜式平台运动响应进行数值模拟，预报在频域和时域条件下半潜式平台运动响应，并对比分析在时域条件下不同风、浪、流组合工况下平台升沉运动幅值，计算设计的平台系泊线拉力，并进行强度校核。%Due to the specialist of the ocean environment, semi-submersible platform will be affected by the joint action of wind, wave and flow. The combination of wind, wave and flow cause six degrees of freedom in the direction of movement and affect operation of semi-submersible. Therefore, the platform motion response prediction and intensity check are particularly important. This article is chosen in the case of 1 000 meters depth, under the condition of frequency domain and time domain respectively, to simulate semi-submersible platform motion response. To predict the characteristics of semi-submersible platform motion response under the condition of frequency domain and time domain and comparative analysis is implemented on the platform heave motion of different combination of wind,wave and flow. To calculate the force size of designed mooring lines under the condition, then conduct intensity check.