Journal of Ocean University of China

, Volume 18, Issue 1, pp 108–122 | Cite as

Investigation of the Hydrodynamic Performance of a Novel Semi-Submersible Platform with Multiple Small Columns

  • Xiancang Song
  • Shuqing Wang
  • Huajun Li
  • Tao Li


This paper presents a novel semi-submersible (SEMI) platform concept, called the multiple small columns (MSC) SEMI that improves upon the hydrodynamic performance of the conventional SEMI. Unlike the conventional SEMI, the proposed MSC SEMI utilizes multiple small circular columns to support the deck and a large pontoon that increases the structural displacement. The novelty of the MSC SEMI is its reduction of the hydrodynamic load on the structure and suppression of its motion response, particularly in the heave direction. The MSC SEMI has the advantages of increasing the added mass, radiation damping, and natural period of the structure. A comprehensive investigation of the hydrodynamic performance of the novel MSC SEMI is conducted in both the time and frequency domains with a special focus on the resulting hydrodynamic load and motion response. Numerical simulation results demonstrate that the MSC SEMI concept can reduce the hydrodynamic load and motion response and improve the hydrodynamic performance of SEMIs as expected.

Key words

semi-submersible platform multiple small columns hydrodynamic performance coupled dynamic analysis 


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The authors acknowledge the support by the National Science Fund for Distinguished Young Scholars (No. 51625902), the National Key Research and Development Program of China (No. 2016YFE0200100), the Major Program of the National Natural Science Foundation of China (No. 51490675), and the Taishan Scholars Program of Shandong Province (No. TS201511016).


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Copyright information

© Science Press, Ocean University of China and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Xiancang Song
    • 1
  • Shuqing Wang
    • 1
  • Huajun Li
    • 1
  • Tao Li
    • 1
  1. 1.Shandong Provincial Key Laboratory of Ocean EngineeringOcean University of ChinaQingdaoChina

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