Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Earthquake Response Analysis of an Offshore Wind Turbine Considering Effects of Geometric Nonlinearity of a Structure and Drag Force of Sea Water

기하 비선형과 항력 효과를 고려한 해상풍력발전기의 지진 응답해석

  • Lee, Jin Ho (Korea Railroad Research Institute, Super Speed Maglev Train Research Team) ;
  • Bae, Kyung Tae (Daewoo E&C, Institute of Construction Technology, Civil Engineering Research Team) ;
  • Jin, Byeong Moo (Daewoo E&C, Institute of Construction Technology, Civil Engineering Research Team) ;
  • Kim, Jae Kwan (Seoul National University, Department of Civil and Environmental Engineering)
  • 이진호 (한국철도기술연구원 초고속자기부상철도연구단) ;
  • 배경태 (대우건설 기술연구원 토목연구팀) ;
  • 진병무 (대우건설 기술연구원 토목연구팀) ;
  • 김재관 (서울대학교 건설환경공학부)
  • Received : 2013.07.10
  • Accepted : 2013.09.24
  • Published : 2013.11.01
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Abstract

In this study, the capability of an existing analysis method for the fluid-structure-soil interaction of an offshore wind turbine is expanded to account for the geometric nonlinearity and sea water drag force. The geometric stiffness is derived to take care of the large displacement due to the deformation of the tower structure and the rotation of the footing foundation utilizing linearized stability analysis theory. Linearizing the term in Morison's equation concerning the drag force, its effects are considered. The developed analysis method is applied to the earthquake response analysis of a 5 MW offshore wind turbine. Parameters which can influence dynamic behaviors of the system are identified and their significance are examined.

Keywords

References

  1. Spera DA. Wind Turbine Technology, Fundamental Concepts of Wind Turbine Engineering. 2nd Edition. Three Park Avenue: ASME Press; c2009.
  2. Kim KD, Choi DH, Sim J, Kim KC. Development and Design of Offshore Wind Turbine Support Structures. KSCE Magazine. 2011; 59(5):28-37.
  3. Shin YS, Park JH, Lee YN. Offshore Wind Markets and Techniques. KSCE Magazine. 2011;59(9):26-30.
  4. Ko KO, Jung KH, Lee JS, Yoon SB. The Need for Development of an Ocean Energy Generation Facility and Its Applications. KSCE Magazine. 2011;59(12):29-36.
  5. Lee JH, Lee S, Kim JK. Earthquake Response Analysis of an Offshore Wind Turbine Considering Fluid-Structure-Soil Interaction. EESK J. Earthquake Eng. 2012;16(3):1-12. https://doi.org/10.5000/EESK.2012.16.3.001
  6. Morison JR, O'Brien MP, Johnson JW, Schaaf SA. The Forces Exerted by Surface Waves on Piles. AIME Petroleum Transactions. 1950;189:149-154.
  7. Wilson JF. Dynamics of Offshore Structures. 2nd Edition. Hoboken: John Wiley & Sons Inc.; c2003.
  8. Jonkman JM. Dynamics Modeling and Loads Analysis of an Offshore Floating Wind Turbine. NREL/TP-500-41958. National Renewable Energy Laboratory; 2007.
  9. Chopra AK. Dynamics of Structures: Theory and Applications to Earthquake Engineering. 3rd Edition. Upper Saddle River: Prentice Hall; c2006.
  10. Lee JH, Tassoulas JL. Consistent transmitting boundary with continued-fraction absorbing boundary conditions for analysis of soil-structure interaction in a layered half-Space. Computer Methods in Applied Mechanics and Engineering. 2011;200(13-16):1509-1525. https://doi.org/10.1016/j.cma.2011.01.004
  11. Lee JH, Kim JK, Tassoulas JL. Dynamic analysis of a poroelastic layered half-space using continued-fraction absorbing boundary conditions. Computer Methods in Applied Mechanics and Engineering. 2013;263:81-98. https://doi.org/10.1016/j.cma.2013.05.002
  12. Kausel E. Forced vibrations of circular foundations on layered media. Research Report R74-11. Cambridge: Department of Civil Engineering, Massachusetts Institute of Technology; c1974.
  13. Lee JH, Kim JK. Transmitting boundary for water-saturated transversely isotropic strata based on the u-U formulation. Soil Dynamics and Earthquake Engineering. 2009;29(5):809-823. https://doi.org/10.1016/j.soildyn.2008.08.003
  14. Wolf JP. Dynamic soil-structure interaction. Englewood Cliffs: Prentice-Hall; c1985.
  15. Jonkman J, Butterfield S, Musial W, Scott, G. Definition of a 5-MW Reference Wind Turbine for Offshore System Development. NREL/TP-500-38060. National Renewable Energy Laboratory; c2009.
  16. Bir G, Jonkman J. Modal Dynamics of Large Wind Turbines with Different Support Structures. NREL/CP-500-43045. National Renewable Energy Laboratory; c2008.
  17. Lee JH, Kim JK, Ryu JS. 3D Transmitting Boundary for Water-Saturated Transversely Isotropic Soil Strata Based on the u-w Formulation. EESK J. Earthquake Eng. 2009;13(6):67-86. https://doi.org/10.5000/EESK.2009.13.6.067
  18. U.S. Nuclear Regulatory Commission. Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants: LWR Edition (NUREG-0800). Section 3.7.2. Revision 3. c2007.
  19. Lamb HS. Hydrodynamics. 6th Edition. Dover Publications; c1993.
  20. Lee JH, Kim JK. Direct Time Domain Method for Nonlinear Earth quake Response Analysis of Dam-Reservoir System. EESK J. Earth quake Eng. 2010;14(3):11-22.