Reliability Analysis of an Offshore Structure:A Case Study I

• Main Authors: Sørensen, John Dalsgaard, Thoft-Christensen, Palle, Rackwitz, R., Bryla, P.
• Other Authors: Guedes Soares, C., Murotsu, Y., Pittaluga, A., Spencer, J.S., Stahl, B.
• Format: Article in Journal/Newspaper
• Language: English
• Published: American Society of Mechanical Engineers 1992
• Subjects: Reliability Analysis; Offshore Structures; Stohastic Modeling; Arctic
• Online Access: https://vbn.aau.dk/da/publications/4a6ba7e0-a86a-11da-8341-000ea68e967b

A jacket type offshore structure from the North Sea is considered. The time variant reliability is estimated for failure defined as brittie fradure and crack through the tubular roerober walls. The stochastic modeiling is described. The hot spot stress speetral moments as fundion of the stochastic variables are desenbed using spline fundion response surfaces. A Laplace integral expansion is used to estimate the time variant reliability. Parameter studies are performed for the reliability estimates and the results of the time variant and the time invariant reliability analyses are compared. A jacket type offshore structure from the North Sea is considered. The time variant reliability is estimated for failure defined as brittie fradure and crack through the tubular roerober walls. The stochastic modeiling is described. The hot spot stress speetral moments as fundion of the stochastic variables are desenbed using spline fundion response surfaces. A Laplace integral expansion is used to estimate the time variant reliability. Parameter studies are performed for the reliability estimates and the results of the time variant and the time invariant reliability analyses are compared.