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Design selection analysis for mooring positioning system of deepwater semi-submersible platform

  • Dongsheng Qiao*
  • , Jinping Ou
  • , Fei Wu
  • *Corresponding author for this work
  • Dalian University of Technology
  • LuXun Academy of Fine Arts

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Aiming at design selection analysis for mooring positioning system of a semi-submersible platform applied in South China Sea, catenary mooring system, semi-taut mooring system and taut mooring system are respectively considered. The three types of mooring positioning system have the similar static restoring force characteristics, the same mooring line number and angle arrangement. The dynamic coupling effects between the semi-submersible platform and its mooring lines are investigated through numerical simulation method. The 3-dimension hydrodynamic finite element model of semi-submersible platform is built firstly. The wave forces are calculated under diffraction theory by boundary element method, and the wind forces are obtained from the wind tunnel test with the model scale 1:100, and the current forces are considered as steady. The platform motions under combined action of wind, wave and current are solved by Runge-Kutta method respectively under working and extreme conditions in South China Sea. The specific numerical results and analysis conclusions would be helpful for selecting the mooring system and the motion performance study in the semi-submersible platform preliminary design.

Original languageEnglish
Title of host publicationProceedings of the 22nd (2012) International Offshore and Polar Engineering Conference
Pages1099-1106
Number of pages8
StatePublished - 2012
Externally publishedYes
Event22nd International Offshore and Polar Engineering Conference, ISOPE-2012 - Rhodes, Greece
Duration: 17 Jun 201222 Jun 2012

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Conference

Conference22nd International Offshore and Polar Engineering Conference, ISOPE-2012
Country/TerritoryGreece
CityRhodes
Period17/06/1222/06/12

Keywords

  • Dynamic analysis
  • Mooring system
  • Response
  • Semi-submersible platform
  • Tension

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