Wind and Structures

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Aerodynamic response of articulated towers: state-of-the-art

  • Zaheer, M. Moonis (Department of Civil Engineering, Jamia Millia Islamia) ;
  • Islam, Nazrul (Department of Civil Engineering, Jamia Millia Islamia)
  • Received : 2007.10.11
  • Accepted : 2008.02.20
  • Published : 2008.04.25
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Abstract

Wind and wave loadings have a predominant role in the design of offshore structures in general, and articulated tower in particular for a successful service and survival during normal and extreme environmental conditions. Such towers are very sensitive to the dynamic effects of wind and wind generated waves. The exposed superstructure is subjected to aerodynamic loads while the submerged substructure is subjected to hydrodynamic loads. Articulated towers are designed such that their fundamental frequency is well below the wave frequency to avoid dynamic amplification. Dynamic interaction of these towers with environmental loads (wind, waves and currents) acts to impart a lesser overall shear and overturning moment due to compliance to such forces. This compliancy introduces geometric nonlinearity due to large displacements, which becomes an important consideration in the analysis of articulated towers. Prediction of the nonlinear behaviour of these towers in the harsh ocean environment is difficult. However, simplified realistic mathematical models are employed to gain an important insight into the problem and to explore the dynamic behaviour. In this paper, various modeling approaches and solution methods for articulated towers adopted by past researchers are reviewed. Besides, reliability of articulation system, the paper also discussed the design, installation and performance of articulated towers around the world oceans.

Keywords

References

  1. Ahmad, S. and Islam, N. (2001a), "Response of a double hinged articulated tower", Proceedings of the International Conference in Ocean Engineering, IIT Madras, India, 09-14.
  2. Ahmad, S. and Islam, N. (2001b), "Response of multi hinged articulated tower in waves", Proceedings of the International Conference in Ocean Engineering, IIT Madras, India, 01-08.
  3. Alexis, G. and Jenin, R. (1988), "The deepest multi articulated column application for permanent mooring system", Proceedings of Offshore Technology Conference, (OTC 749), Houston, Texas.
  4. Andrepont, S.J. (1980), "United States Patent", website: http://www.freepatentsonline.com/
  5. Bar-Avi, P. and Benaroya, H. (1996), "Non-linear dynamics of an articulated tower in the ocean", J. Sound Vib., 190(1), 77-103. https://doi.org/10.1006/jsvi.1996.0048
  6. Bar-Avi, P. and Benaroya, H. (1997), "Stochastic response of a two DOF articulated tower", Int. J. Non-Linear Mech., 32(4), 639-655. https://doi.org/10.1016/S0020-7462(96)00092-3
  7. Bathe, K.J. and Bolourchi, S. (1979), "Large displacement analysis of three dimensional beam structures", Inter. J. Numer. Meth. Eng., 14, 961-986. https://doi.org/10.1002/nme.1620140703
  8. Burns, G. and D'Amorim, G. (1977). "Buoyant tower for phase one development of Groupa field", Proceedings of 9th Annual Offshore Technology Conference, 177-184.
  9. Charkarbarti, S.K. and Cotter, D.C. (1978), "Analysis of a tower-tanker system", Proceedings of the 10th Offshore Technology Conference, 1301-1310.
  10. Charkarbarti, S.K. and Cotter, D.C. (1979), "Motion analysis of articulated tower", J. Water Way, Port, Coastal Ocean Div., ASCE 105, 281-292.
  11. Charkarbarti, S.K. and Cotter, D.C. (1989), "Motions of articulated towers and moored floating structures", J. OMAE 111, 233-241.
  12. Chassey, C.B., Frankhouser, H.S. and Picard, J. (1971), "Various uses for the articulated column ELFOCEAN - A new concept", Proceedings of the 3rd Annual Offshore Technology Conference, OTC 1392, 643-670.
  13. Chen, C. and Will, A. (1999), "Design of the Baldpate Tower for Fatigue and Wear", Proceedings of the Offshore Technology Conference, OTC 10917, 1-12.
  14. Choi, H.S., Lou, J.Y.K (1993), "Nonlinear mooring line induced slow drift motion of an ALP tanker", J. Ocean Eng., 20(3), 233-246. https://doi.org/10.1016/0029-8018(93)90022-A
  15. Clauss, G.F. and Lee, J.Y. (2003) "Dynamic behavior of compliant towers in deep sea." Proceeding of International Conference on Offshore Mechanics and Arctic Engineering (OMAE), June 8-13, Cancun, Mexico, 1-11.
  16. Datta, T.K. and Jain, A.K. (1990), "Response of articulated tower platforms to random wind and wave forces", J. Comput. Struct., 34, 13-144.
  17. Gerber, M. and Engelbrecht, L. (1993), "The bilinear oscillator: The response of an articulated mooring tower driven by irregular sea", J. Ocean Eng., 20(2), 113-133. https://doi.org/10.1016/0029-8018(93)90030-L
  18. Granville, A.J. and Fisher, P.M. (1983), "Articulated loading column - Maureen Field", Design in Offshore Structures, Thomas Telford Ltd, London, 151-159.
  19. Gruv, R.H. and Kiely, W.L. (1977), "The world's largest single point mooring terminal design and construction of the SALM systems for 750,000DWT tankers", Proceedings of Offshore Technology Conference, OTC 2826, Huston, Texas.
  20. Han, S.M. and Benaroya, H. (2000), "Nonlinear coupled transverse and axial vibration of a compliant structure 1: formulation and free vibration", J. Sound Vib., 237(5), 837-873. https://doi.org/10.1006/jsvi.2000.3147
  21. Han, S.M. and Benaroya, H. (2000), "Nonlinear coupled transverse and axial vibration of a compliant structure 2: forced vibration", J. Sound Vib., 237(5), 874-899.
  22. Han, S.M. and Benaroya, H. (2002), "Comparison of linear and nonlinear responses of a compliant tower to random wave forces", J. Chaos Solitons and Fractals, 14, 269-291. https://doi.org/10.1016/S0960-0779(01)00232-6
  23. Hanna, S.Y., Karsan, D.I. and Yeung, J.Y. (1988), "Dynamic response of a compliant tower with multiple articulations", Proceeding of International Conference on Offshore Mechanics and Arctic Engineering Symposium, 1, 257-269.
  24. Haverty, K. McNamara, J. and Moran, B. (1982), "Finite dynamic motions of articulated offshore loading towers", Proceedings of Marine Research Ship Technology and Ocean Engineering.
  25. Hays, D.L., McSwiggan and Vilain, R. (1979), "Operation of an articulated oil loading column at the Beryl Field in the North Sea", Proceedings of the 11th Annual Offshore Technology Conference, OTC 3563, 1805-1815.
  26. Hevacioglu, I. and Incecik, A. (1988), "Dynamic analysis of coupled articulated tower and floating production system" Proceeding of the 7th International Conference on Offshore Mechanics and Arctic Engineering, 279-287.
  27. Islam, N. and Ahmad, S. (2003), "Random wave response of double pendulum articulated offshore tower", Proceedings of the 22nd International Conference on Offshore Mechanics and Arctic Engineering, Cancun, Mexico, 1, 489-498.
  28. Islam, N. and Ahmad, S. (2007), "Reliability of articulated tower joint against random base shear", J. Struct. Eng. Mech., 27(1), 33-48. https://doi.org/10.12989/sem.2007.27.1.033
  29. Jain, A. K. and Datta, T. K. (1987), "stochastic response of articulated towers", Proceedings of the Deep Offshore Technology, 4th International Conference and exhibition, 191-208.
  30. Jain, A.K. and Dutta, T.K. (1991), "Nonlinear behaviour of articulated tower in random sea", J. Eng. Ind., 238-240.
  31. Jain, R.K. and Kirk, C.L. (1981), "Dynamic response of a double articulated offshore loading structure to noncollinear wave and currents", Journal of Energy Resources Technology, Transactions of the ASME, 103, 41-47. https://doi.org/10.1115/1.3230813
  32. Kirk, C.L, and Jain, R.K. (1977), "Response of articulated towers to waves and currents", Proceedings of the 15th Offshore Technology Conference, OTC 2798, 545-552.
  33. Kuchnicki, S.N., Benaroya, H., 2002. A Parametric Study of a flexible ocean tower. Chaos, Solitons and Fractals 14, 183-201. https://doi.org/10.1016/S0960-0779(01)00227-2
  34. Leonard, J.W. and Young, R.A. (1985), "Coupled response of compliant offshore platforms", J. Eng. Struct., 7, 74-84. https://doi.org/10.1016/0141-0296(85)90017-3
  35. McNamara, J.F. and Lane, M. (1984), "Practical modeling for articulated risers and loading columns", Jr. of Energy Resources Technology, Transactions of the ASME, 106, 444-450. https://doi.org/10.1115/1.3231104
  36. McNeilly, C.C. and Will, S.A. (2006), "Engineering the Benguela - Belize compliant piled tower", World Oil, September 2006 issue, 73-75.
  37. Nagamani, K. and Ganapathy, C. (1996), "Finite element analysis of nonlinear dynamic response of articulated towers", J. Comp. Struct., 59(2), 213-223. https://doi.org/10.1016/0045-7949(95)00265-0
  38. Nagamani, K., and Ganapathy, C. (2000), "The dynamic response of a three-leg articulated tower", J. Ocean Eng., 27(Issue 12), 1455-1471. https://doi.org/10.1016/S0029-8018(99)00049-9
  39. Noblanc, A. and Sehnader, H.E. (1983), "Precise seabed emplacement of an articulated loading platform in the North Sea", Proceedings of the 15th Annual Offshore Technology Conference, OTC 4571, Huston, Texas, 481-488.
  40. Olsen, 0.A., Braathen, A. and Loken, A.E. (1978), "Slow and high frequency motions and loads of articulated single point mooring system for large tanker", Norw. Jr. of Marine Research, 14-28.
  41. Ramesh, D.G.S.R. (2001), "Behaviour of an articulated tower due to wave diffraction", Proceedings of the International Conference in Ocean Engineering, IIT Madras, India, 1, 15-20.
  42. Ran, Z. and Kim, M.H. (1995), "Response of articulated loading platform in irregular waves", J. Waterway, Port, Coastal and Ocean Eng., 121(6), 283-293. https://doi.org/10.1061/(ASCE)0733-950X(1995)121:6(283)
  43. Sedillot, F., Dorris, C.G. and Stevenson, A. (1982). "Laminated rubber articulated joint for the deep water gravity tower", Proceeding of 14th Annual Offshore Technology Conference (OTC 4195), Vol. 1; Houston, Texas, USA, 341-350.
  44. Sellers, L.L. and Niedzwecki, J.M. (1992), "Response characteristics of multi-articulated offshore towers", Inter. J. Ocean Eng., 19(1), 1-20. https://doi.org/10.1016/0029-8018(92)90044-5
  45. Spidoe, N. and Brathaug, H.P. (1983), "Measured motions of a North Sea articulated loading platform", Proceedings of the 15th Offshore Technology Conference, OTC 4639, 491-505.
  46. Suneja, B.P., and Datta, T.K. (1998), "Active control of ALP with improved performance function", J. Ocean Eng., 25(Issue 10), 817-835. https://doi.org/10.1016/S0029-8018(97)10007-5
  47. Thompson, J.M.T., Bokain, A.R. and Ghaaffari, R. (1984), "Subharmonic and chaotic motions of compliant offshore structure and articulated mooring towers", J. Energy Resources Technology, ASME, 106, 191-198. https://doi.org/10.1115/1.3231037
  48. Will, S.A. (1999), "Design of the Baldpate compliant tower", Proceedings of the 31st Annual Offshore Technology Conference, OTC 10915, Vol. 3.
  49. Wirsching, P.H. (1984), "Fatigue reliability for offshore structures", J. Struct. Div., ASCE, 110(10), 2340-2356. https://doi.org/10.1061/(ASCE)0733-9445(1984)110:10(2340)

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