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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)
  • 투고 : 2007.10.11
  • 심사 : 2008.02.20
  • 발행 : 2008.04.25

초록

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.

키워드

참고문헌

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피인용 문헌

  1. Double hinged articulated tower interaction with wind and waves vol.97, pp.5-6, 2009, https://doi.org/10.1016/j.jweia.2009.07.002
  2. Wind Induced Response of Spar-mooring-riser System 2017, https://doi.org/10.1007/s12205-017-1914-x
  3. Response of double hinged articulated tower platforms to wind forces vol.12, pp.2, 2009, https://doi.org/10.12989/was.2009.12.2.103
  4. Aerodynamic behaviour of double hinged articulated loading platforms vol.11, pp.1, 2021, https://doi.org/10.12989/ose.2021.11.1.017
  5. Aerodynamic and hydrodynamic force simulation for the dynamics of double-pendulum articulated offshore tower vol.32, pp.4, 2021, https://doi.org/10.12989/was.2021.32.4.341
  6. Aerodynamic and hydrodynamic force simulation for the dynamics of double-hinged articulated offshore tower vol.33, pp.2, 2008, https://doi.org/10.12989/was.2021.33.2.141