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dc.contributor.advisorBarroso, Luciana
dc.contributor.advisorGardoni, Paolo
dc.creatorFallon, Michael Brooks
dc.date.accessioned2013-03-14T16:16:51Z
dc.date.available2014-12-12T07:18:59Z
dc.date.created2012-12
dc.date.issued2012-11-12
dc.date.submittedDecember 2012
dc.identifier.urihttps://hdl.handle.net/1969.1/148215
dc.description.abstractInterest in evaluating the performance and safety of offshore oil and gas platforms has been expanding due to the growing world energy supply and recent offshore catastrophes. In order to accurately assess the reliability of an offshore platform, all relevant uncertainties must be properly accounted for. This necessitates the development of a probabilistic demand model that accounts for the relevant uncertainties and model errors. In this study, a probabilistic demand model is developed to assess the deformation demand on asymmetric offshore jacket platforms subject to wave and current loadings. The probabilistic model is constructed by adding correction terms and a model error to an existing deterministic deformation demand model. The correction terms are developed to capture the bias inherent in the deterministic model. The model error is developed to capture the accuracy of the model. The correction terms and model errors are estimated through a Bayesian approach using simulation data obtained from detailed dynamic analyses of a set of representative asymmetric offshore platform configurations. The proposed demand model provides accurate and unbiased estimates of the deformation demand on offshore jacket platforms. The developed probabilistic demand model is then used to assess the reliability of a typical offshore platform considering serviceability and ultimate performance levels. In addition, a sensitivity analysis is conducted to assess the effect of key parameters on the results of the analyses. The proposed demand model can be used to assess the reliability of different design options and for the reliability-based optimal design of offshore jacket platforms.en
dc.format.mimetypeapplication/pdf
dc.subjectOffshore Platformsen
dc.subjectAsymmetryen
dc.subjectFragilityen
dc.subjectReliabilityen
dc.subjectDeformationen
dc.titleA Probabilistic Deformation Demand Model and Fragility Estimates for Asymmetric Offshore Jacket Platformsen
dc.typeThesisen
thesis.degree.departmentCivil Engineeringen
thesis.degree.disciplineCivil Engineeringen
thesis.degree.grantorTexas A&M Universityen
thesis.degree.nameMaster of Scienceen
thesis.degree.levelMastersen
dc.contributor.committeeMemberMurphy, Colleen
dc.type.materialtexten
dc.date.updated2013-03-14T16:16:52Z
local.embargo.terms2014-12-01


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