锚泊浮式结构波浪上运动的频域算法

Calculation of the Motion of a Moored Floating Structure by Using Second Order Frequency Domain Method

介绍一种计算系泊浮式海洋结构在波浪上运动响应的方法 ,与一般现有的系泊结构动力计算方法不同 ,它是应用频域法考虑了系泊系统与结构运动间的动力偶合 ,特别是应用二阶摄动方程 ,解出系泊浮式结构系统的二阶慢荡运动 .该方法能正确地确定慢漂运动、低频锚链力等在工程设计中感兴趣的数据 ,适用于油轮、半潜平台、转塔式 FPSO以及张力腿平台等各种型式的浮式结构和系泊方式 .程序的计算结果经过了大量的与相应模型试验结果的校核 .表明所给出的结果可靠 .

A method of perturbation up to second order in frequency domain was used to calculate the motion and load of a moored floating structure in random waves. The description of the method was introduced together with some materials which validate the method. The comparison between the calculated results by using this method and the corresponding model test results show good conformation for a variety types of moored floating structure.