上海交通大学学报

上海交通大学学报（自然版）

• 天文学、地球科学 • 上一篇    下一篇

自升式海洋平台动态放大因子分析与抑制

黄曌宇1,2，唐文勇1，汪怡2，王文涛2   

  1. (1.上海交通大学 海洋工程国家重点实验室,上海 200030;2.上海振华重工(集团)股份有限公司,上海 200125)
  • 收稿日期:2009-12-30 修回日期:1900-01-01 出版日期:2010-06-30 发布日期:2010-06-30

Analysis and Suppression on the Dynamic Amplification Factor of Selfelevating Offshore Platform

HUANG Zhaoyu1,2,TANG Wenyong1,WANG Yi2,WANG Wentao2   

  1. (1. State Key Laboratory of Ocean Engineering, Shanghai Jiaotong University, Shanghai 200030, China;2. Shanghai Zhenhua Heavy Industry Co. Ltd, Shanghai 200125, China)
  • Received:2009-12-30 Revised:1900-01-01 Online:2010-06-30 Published:2010-06-30

摘要： 以某一自升式海洋平台参数为基础，通过Stokes五阶波方法对平台的动态和静态基础剪切力进行了比较和分析，并计算了平台的动态放大因子(DAF).通过与单自由度方法的DAF计算结果进行比较和讨论，证实了单自由度方法更加保守.同时，得出了抑制DAF的机理，并通过增加结构整体刚度的方法达到了抑制DAF的目的.

关键词: 自升式海洋平台, 动态放大因子, 机理, 抑制

Abstract: Based on the selfelevating platform structure and the Stokes 5th wave theory, the dynamic and static shear forces of the foundation were computed and analyzed. Then the detailed calculation method was compared with the singlefreedomdegree method, which is much more conservative. Finally, the mechanism of the suppression on the dynamic amplification factor(DAF) was analyzed and the real DAF value was reduced through the increase of the platform stiffness.

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