Long-Term Reliability of a Jackup-Platform Foundation
A probabilistic model for analysis of the foundation stability of a jack-up platform foundation is presented. A jack-up platform with three independent legs supported by individual spudcan footings is considered as an example, and a two-dimensional representation of this platform is adopted. Conventional bearing capacity failure as well as horizontal sliding of one of the spudcan footings are considered. Uncertainties in wave and wind loading as well as in soil strength properties are included. The long-term reliability of the foundation is assessed by means of a nested application of a first-order reliability method.
KeywordsFailure Probability Reliability Index Significant Wave Height Limit State Function Maximum Wave Height
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