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http://dx.doi.org/10.12989/sem.2007.27.1.033

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)
Publication Information
Structural Engineering and Mechanics / v.27, no.1, 2007 , pp. 33-48 More about this Journal
Abstract
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.
Keywords
articulated; off-shore; SPM; random sea; reliability; fatigue; compliant;
Citations & Related Records

Times Cited By Web Of Science : 4  (Related Records In Web of Science)
Times Cited By SCOPUS : 6
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