浅水条件下15万吨级FPSO波浪载荷与运动预报分析

Wave Load and Motion Prediction Analysis of 150 000 t FPSO in Shallow Water

浅水条件下的大型船体结构响应与常规水深下的相比有较大差异。由于船体运动及波浪诱导载荷的预报关乎系泊系统设计、船体疲劳寿命以及安全性评估,研究大型浮式生产储油卸油装置运动和波浪诱导载荷响应十分必要。通过研究15万吨级FPSO在极端环境条件下的响应极值,对该级别船体载荷及运动预报提出建议。结果表明,浅水条件下波长与船长比较接近时响应最大,且部分波浪力超出了规范设计值,这在设计中应予以重视。

The response of the large hull structure in shallow water is quite different from that of the conventional water depth.The prediction of hull motion and wave induced load is related to the mooring system design,the fatigue life of the hull and the safety assessment,therefore,it is necessary to study the motion and wave induced load response of large floating production storage and offloading device.By studying the extreme response of the 150 thousand ton grade FPSO under extreme environmental conditions,suggestions on the load and motion prediction of this grade ship can be provided.The results show that the response is maximum when the wavelength is close to the ship length in shallow water,and some wave forces are beyond the standard design value,this should be noticed in the design.