Structural Engineering and Mechanics

  • 제27권1호
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  • Pages.33-48
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  • 2007
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Reliability of articulated tower joint against random base shear

  • Islam, Nazrul (Civil Engineering Department, Jamia Millia Islamia University) ;
  • Ahmad, Suhail (Applied Mechanics Department, Indian Institute of Technology)
  • 투고 : 2006.05.08
  • 심사 : 2007.03.19
  • 발행 : 2007.09.10
⟨ 이전 논문 다음 논문 ⟩

초록

An Articulated tower is one of the compliant offshore structures connected to the sea-bed through a universal joint which is the most vulnerable location of the tower that sustains the randomly fluctuating shear stresses. The time history response of the bottom hinge shear is obtained and presented in the spectral form. The fatigue and fracture reliability assessment of the tower joint against randomly varying shear stresses have been carried out. Non-linear limit state functions are derived in terms of important random variables using S-N curve and fracture mechanics approaches. Advanced First Order Reliability Method is used for reliability assessment. Sensitivity analysis shows the influence of various variables on the hinge safety. Fatigue life estimation has been made using probabilistic approach.

키워드

참고문헌

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피인용 문헌

  1. Strength-Based Seismic Reliability of a Compliant Offshore Tower vol.14, pp.3, 2011, https://doi.org/10.1260/1369-4332.14.3.419
  2. DOUBLE-HINGED ARTICULATED OFFSHORE TOWER UNDER SEISMIC EXCITATION vol.04, pp.03, 2010, https://doi.org/10.1142/S1793431110000807
  3. Aerodynamic response of articulated towers: state-of-the-art vol.11, pp.2, 2007, https://doi.org/10.12989/was.2008.11.2.097
  4. Reliability analysis of concrete bridges designed with material and member resistance factors vol.6, pp.1, 2007, https://doi.org/10.12989/cac.2009.6.1.059
  5. 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