Journal of Shanghai Jiaotong University

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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

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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