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海洋平台在海中经常受到海冰、地震等动荷载的作用,造成经济损失以及人员伤亡。以渤海JZ20-2导管架海洋平台为模型,分别在海洋平台加入支撑结构、斜撑结构以及钢管混凝土导管3种抗振措施,利用大型有限元软件ABAQUS模拟海冰、地震对海洋平台的作用进行动力时程分析,通过对海洋平台位移以及加速度反应对比分析,得出在冰荷载作用下,钢管混凝土导管控制海洋平台振动效果较好;在天津波作用下,斜撑结构减振效果最好,综合比较采用钢管混凝土导管是较好的抗振措施。
Offshore platforms are often subjected to dynamic loads such as sea ice and earthquakes in the sea, resulting in economic losses and casualties. Taking Bohai JZ20-2 jacket offshore platform as a model, three kinds of anti-vibration measures such as supporting structure, bracing structure and concrete-filled steel tube were added to the offshore platform respectively. The large-scale finite element software ABAQUS was used to simulate the sea ice and the effect of earthquake on the offshore platform Dynamic time history analysis shows that under the action of ice load, the effect of concrete-filled steel tube on the control of offshore platform vibration is better than that of the offshore platform by the contrast of displacement and acceleration response. Under the action of Tianjin wave, Comprehensive comparison of concrete filled steel pipe is a good anti-vibration measures.