Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Effects of the Flexibility on the Structural Responses of a Tension Leg Platform

인장계류식 해양구조물의 구조응답에 미치는 굽힘강성의 영향

  • Published : 2007.08.31
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Abstract

The structural response characteristics of Tension leg platforms(TLPs) in waves are examined for presenting the basic data for structural design of TLPs. The numerical approach is based on a combination of the three dimensional source distribution method and the structural response analysis method, in which the superstructure of TLP is assumed to be flexible instead of rigid. Hydrodynamic and hydrostatic forces on the submerged surface of a TLP have been accurately calculated by excluding the assumption of the slender body theory. The hydrodynamic interactions among TLP members, such as columns and pontoons, and the structural damping are included in structural analysis. The mooring forces are estimated as the sum of pretension of tendons and variational tension due to longitudinal displacements. Stiffness matrices of elastic beam elements connecting nodes are formulated by ordinary method of three dimensional frame analysis. The equation of motion about the whole structure is obtained by the sum of forces and moments acting on each nodes.

Keywords

References

  1. 구자삼, 김진하, 이창호 (1995). '인장계류식 해양구조물의 동적 응답해석(I)', 한국해양회학회지, 제9권, 제1호, pp 161-172
  2. 구자삼, 박찬후, 이창호 (1996). '인장계류식 해양구조물의 동적 응답해석(II)', 한국해양공학회지, 제10권, 제1호, pp 25-35
  3. 김진하, 홍사영, 최윤락, 홍섭, 김현조 (2000). '심해 인장각 플랫폼의 모형시험 연구(II) -모형시험 및 해석-', 한국해양공학회 춘계학술대회논문집, pp 69-74
  4. 이창호 (2006). 'Isse - TLP의 운동응답 및 변동장력에 미치는 다방향 불규칙파의 영향', 한국해양공학회지, 제20권, 제4호, pp 70-75
  5. 이창호 (2006), '시간영역에서 ISSC-TLP의 비선형 운동응답 특성', 한국해양공학회지, 제20권, 제5호, pp 30-35
  6. 이창호, 최찬문, 홍봉기 (1996). '굽힘강성 변화에 따른 인장계류식 해양구조물의 동적응답 특성', 한국어업기술학회지, 제32권, 제2호, pp 191-204
  7. Kanetsuna, M., Sekita, K., Sekimoto, T. and Shimada, K. 'Field Measurement Results of TLP Dynamic Responses and Strength Assessment of Parallel Wire Strand Tendon', SNAJ, Vol 175, pp 227-239
  8. Mercier, J.A., Birell, N.D., Chivvis, J.C. and Hunter, A.F. (1991). 'Tension Leg Platforms - Progress and Prospects', SNAME Transactions 99, pp 249-279
  9. Teigen, P. and Haver, S.(1998). 'The Heidrun TLP : measured versus predicted response', Applied Ocean Research 20, pp 27-35 https://doi.org/10.1016/S0141-1187(98)00009-1
  10. Zou, J. (2003). 'TLP Hull/Tendon/Riser Coupled Dynamic Analysis in Deepwater', Proc. of 13th lOPEC, pp 160-166