Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Reliagility Analysis of Tension Leg Platforms for Severe Storm Waves

대규모 폭풍에 대한 Tension Leg Platform의 신뢰도해석

  • 박우선 (한국해양연구소, 해양공학실) ;
  • 윤정방 (한국과학기술원토목공학과)
  • Published : 1991.06.01
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Abstract

This paper presents a method of the reliability analysis for a tension leg platform(TLP)in severe storm waves by using the first passage concept of the random tensile stress in the tendons. In the present method, two failure conditions are considered ;i.e., the exceedance of the ultimate tensile capacity and the occurrence of the negative tension. In order to consider the correlation effects between the failure events for each corner resulted from the rupture of all tencons at one corner, a new system limit state for a rectangular shaped TLP is developed, which is defined in terms of the TLP motions in the vertical plane ;i.e., heave, roll, and pitch. To illustrate the validity of the present method, the numerical analysis is carried out for two TLP's with different structural dimensions. Then, the results are compared with those by other methods.

Keywords

References

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