极端冰载荷作用下自复位导管架式海洋平台有限元分析

以渤海辽东湾JZ20-2导管架式海洋平台为模型，提出海洋平台体外加设预应力拉索的减振措施。利用有限元软件Abaqus对海洋平台进行极端冰激载荷下的动力时程分析，对比分析海洋平台在不同冰载荷和预应力下的位移与加速度响应。数据分析表明，预应力的大小是影响海洋平台抗振性能的最主要因素，预应力拉索可较好地控制不同工况下海洋平台的动力响应，具有良好的减振效果与自复位性能。

Finite Element Analysis of Self-Centering Jacket Offshore Platform Under Extreme Ice Load

Taken JZ20-2 jacket offshore platform in Liaodong Bay of Bohai Sea as a model, the vibration reduction measures of the offshore platform with prestressed cables are proposed. The finite element software Abaqus is used to analyze the dynamic time history of the offshore platform under extreme ice load. The displacement and acceleration response of the offshore platform under different ice loads and prestresses are compared and analyzed. The data analysis shows that the prestress is the most important factor affecting the anti-vibration performance of the offshore platform, the prestressed cable can better control the offshore platform under different working conditions, and it is of good damping effect and self-centering performance.