Smart Structures and Systems

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Experimental study on the vibration mitigation of offshore tension leg platform system with UWTLCD

  • Lee, Hsien Hua (Department of Marine Environment and Engineering, National Sun Yat-sen University) ;
  • Juang, H.H. (Department of Marine Environment and Engineering, National Sun Yat-sen University)
  • Received : 2010.08.19
  • Accepted : 2011.12.20
  • Published : 2012.01.25
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Abstract

In this research, a typical tension-leg type of floating platform incorporated with an innovative concept of underwater tuned liquid column damper system (UWTLCD) is studied. The purpose of this study is to improve the structural safety by means of mitigating the wave induced vibrations and stresses on the offshore floating Tension Leg Platform (TLP) system. Based on some encouraging results from a previous study, where a Tuned Liquid Column Damper (TLCD) system was employed in a floating platform system to reduce the vibration of the main structure, in this study, the traditional TLCD system was modified and tested. Firstly, the orifice-tube was replaced with a smaller horizontal tube and secondly, the TLCD system was combined into the pontoon system under the platform. The modification creates a multipurpose pontoon system associated with vibration mitigation function. On the other hand, the UWTLCD that is installed underwater instead would not occupy any additional space on the platform and yet provide buoyancy to the system. Experimental tests were performed for the mitigation effect and parameters besides the wave conditions, such as pontoon draught and liquid-length in the TLCD were taken into account in the test. It is found that the accurately tuned UWTLCD system could effectively reduce the dynamic response of the offshore platform system in terms of both the vibration amplitude and tensile forces measured in the mooring tethers.

Keywords

References

  1. Balendra, T., Wang, C.M. and Cheong, H.F. (1995), "Effectiveness of tuned liquid column dampers for vibration control of towers", Eng. Struct., 17(9), 668-675. https://doi.org/10.1016/0141-0296(95)00036-7
  2. Boschetti, N. (2006), "Offshore floating foundation (Tension Leg Platform) to support a multimegawatt wind turbine", OWEMES- Civitavecchia.
  3. Brogan, M.A. and Wasserman, K.S. (2003), "Tension leg platform design optimization for vortex induced vibration", Oceans Proceeding, 5, 2894-2902.
  4. Chaiseri, P., Fujino, Y., Pacheco, B.M. and Sun, L.M. (1989), "Interaction of tuned liquid damper (TLD) and structure: theory, experimental verification and application", Struct. Eng. / Earthq. Eng., JSCE, 6, 273-282.
  5. Chatterjee, P.C., Das, P.K.and Faulkner, D. (1997), "A hydro-structural analysis program for TLPs", Ocean Eng., 24(4), 313-333. https://doi.org/10.1016/S0029-8018(96)00016-9
  6. Colwell, S. and Basu, B. (2009), "Tuned liquid dampers in offshore wind turbines for structural control", Eng. Struct., 31(2), 358-368. https://doi.org/10.1016/j.engstruct.2008.09.001
  7. Fujino, Y., Pacheco, B.M., Chaiseri, P. and Sun, L.M. (1988), "Parametric studies on tuned liquid damper (TLD) using circular containers by free-oscillation experiments", Struct. Eng. / Earthq. Eng., JSCE, 5(4), 381-391.
  8. Fujino, Y. and Sun, L.M. (1993), "Vibration control by multiple tuned liquid dampers (MTLDs)", J. Struct. Eng- ASCE, 119(12), 3482-3502. https://doi.org/10.1061/(ASCE)0733-9445(1993)119:12(3482)
  9. Fujino, Y., Sun, L.M. and Pacheco, B.M. (1992), "Tuned liquid damper (TLD) for suppressing horizontal motion of structures", J. Eng. Mech-ASCE, 118(10), 2017-2030. https://doi.org/10.1061/(ASCE)0733-9399(1992)118:10(2017)
  10. Gao, H. and Kwok, K.C.S. (1997), "Optimization of tuned liquid column dampers", Eng. Struct., 19(6), 476-486. https://doi.org/10.1016/S0141-0296(96)00099-5
  11. Hitchcock, P.A., Kwok, K.C.S., Watkins, R.D. and Samali, B. (1997a), "Characteristics of liquid column vibration absorbers (LCVA) - I", Eng. Struct., 19(2), 126-134. https://doi.org/10.1016/S0141-0296(96)00042-9
  12. Hitchcock, P.A., Kwok, K.C.S., Watkins, R.D. and Samali, B. (1997b), "Characteristics of liquid column vibration absorbers (LCVA) - II", Eng. Struct., 19(2), 135-144. https://doi.org/10.1016/S0141-0296(96)00044-2
  13. Isaacson, M. (1979), "Nonlinear forces on bodies", J. Waterw. Port C-ASCE, 105(3), 213-227.
  14. Jain, A.K. (1997), "Nonlinear coupled response of offshore tension leg platforms to regular wave forces", Ocean Eng., 24(7), 577-592. https://doi.org/10.1016/0029-8018(95)00059-3
  15. Kareem, A. and Kline, S. (1995), "Performance of multiple mass dampers under random loadings", J. Struct. Control, 3-5, FP5-19-FP5-28.
  16. Lee, H.H. (1997), "Stochastic analysis for offshore structures with added mechanical dampers", Ocean Eng., 24(9), 817-834. https://doi.org/10.1016/S0029-8018(96)00039-X
  17. Lee, H.H. (1998), "Seismic and vibration mitigation for the A-type offshore template platform system", Struct. Eng. Mech., 6(3), 347-362. https://doi.org/10.12989/sem.1998.6.3.347
  18. Lee, H.H. and Wu, R.J. (1996), "Vibration mitigation of structures in the marine environment", Ocean Eng., 23(8), 741-759. https://doi.org/10.1016/0029-8018(96)84410-6
  19. Lee, H.H. and Wang, W.S. (2001), "Analytical solution on the dragged surge vibration of TLPs with wave, large body and small body multi-interactions", J. Sound. Vib., 248(3), 533-556. https://doi.org/10.1006/jsvi.2001.3803
  20. Lee, H.H. and Wang, W.S. (2003), "On the dragged surge vibration of a twin TLP system with multi-interactions of wave and structures", J. Sound. Vib., 263(4), 743-774. https://doi.org/10.1016/S0022-460X(02)01108-2
  21. Lee, H.H., Wong, S.H. and Lee, R.S. (2005), "Response mitigation on the offshore floating platform system with TLCD", Ocean Eng., 33, 1118-1142.
  22. Mei, C.C. (1978), "Numerical methods in water wave diffraction and radiation", Annu. Rev. Fluid Mech., 10, 393-416. https://doi.org/10.1146/annurev.fl.10.010178.002141
  23. Newman, J.N. (1977), Marine Hydrodynamics, MIT Press, Cambridge, MA.
  24. Sakai F., Takaeda, S. and Tamaki, T. (1989), "Tuned liquid column damper - new type device for suppression of building vibrations", Proceedings of the International Conference on High-rise Buildings.
  25. Shum, K.M. and Xu, Y.L. (2004), "Multiple tuned liquid column dampers for reducing coupled lateral and torsional vibration of structures", Eng. Struct., 26(6), 745-758. https://doi.org/10.1016/j.engstruct.2004.01.006
  26. Taflanidis, A.T., Angelides, D.C. and Scruggs, J.T. (2009), "Simulation-based robust design of mass dampers for response mitigation of tension leg platforms", Eng. Struct., 31(4), 847-857. https://doi.org/10.1016/j.engstruct.2008.11.014
  27. Wen, Y.K. (1980), "Equivalent linearization for hysteretic systems under random excitation", J. Appl. Mech-T ASME, 47(1), 150-154. https://doi.org/10.1115/1.3153594
  28. Won, A.Y.J., Piers, J.A. and Haroun, M.A. (1996), "Stochastic seismic performance evaluation of tuned liquid column dampers", Earthq. Eng. Struct. D., 25(11), 1259-1274. https://doi.org/10.1002/(SICI)1096-9845(199611)25:11<1259::AID-EQE612>3.0.CO;2-W
  29. Wu, J.C., Shih, M.H., Lin, Y.Y. and Shen, Y.C. (2005), "Design guidelines for tuned liquid column damper for structures responding to wind", Eng. Struct., 27(13), 1893-1905. https://doi.org/10.1016/j.engstruct.2005.05.009
  30. Xu, Y.L., Samali, B. and Kwok, K.C.S. (1992), "Control of along-wind response of structures by mass and liquid dampers", J. Eng. Mech.-ASCE, 118(1), 20-39. https://doi.org/10.1061/(ASCE)0733-9399(1992)118:1(20)
  31. Xue, S.D., Ko, J.M. and Xu, Y.L. (2000), "Tuned liquid column damper for suppressing pitching motion of structures", Eng. Struct., 22(11), 1538-1551. https://doi.org/10.1016/S0141-0296(99)00099-1
  32. Yamamoto, T., Yoshida, A. and Ijima, T. (1982), Dynamics of elastically moored floating objects, (Eds. Kirk, C.L. and CML, Southampton), In Dynamics Analysis of Offshore Structures.

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