A Novel Risk Evaluation Procedure Using a Kriging-Based Surrogate Modeling for Offshore Structures

An innovative reliability estimation procedure for Jacket-type offshore platforms is proposed. The information on risk is extracted using multiple deterministic analyses using advanced mathematical theories resulting in compounding beneficial effects. The platforms are modeled by finite elements. No...

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Bibliographic Details
Published in:KSCE journal of civil engineering 2021, 25(7), , pp.2603-2612
Main Authors: Vazirizade, Sayyed Mohsen, Haldar, Achintya
Format: Article
Language:English
Subjects:
Civil Engineering
Computer simulation
Engineering
Finite element method
Geotechnical Engineering & Applied Earth Sciences
Industrial Pollution Prevention
Limit states
Modelling
Monte Carlo simulation
Nonlinear systems
Nonlinearity
Offshore
Offshore platforms
Offshore structures
Physics
Random vibration
Response surface methodology
Risk assessment
Structural Engineering
Uncertainty
Vibration
토목공학
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Summary:An innovative reliability estimation procedure for Jacket-type offshore platforms is proposed. The information on risk is extracted using multiple deterministic analyses using advanced mathematical theories resulting in compounding beneficial effects. The platforms are modeled by finite elements. Nonlinearity and major sources of uncertainty are incorporated. The wave loading model is realistically developed to satisfy the underlying physics. It is applied in three-dimension in time domain incorporating the uncertainties in the parameters. Implicit performance functions are expressed explicitly using several advanced factorial schemes and significantly improved response surface method. The efficiency and accuracy of the method are improved using a comprehensively improved Kriging-based surrogate modeling technique. The risk is evaluated for the serviceability and strength limit state functions for a jacket-type offshore platform using about two hundred nonlinear finite element analyses. The procedure was verified using simulation techniques. The concept can be considered an alternative to the conventional random vibration techniques and the standard Monte Carlo simulation procedure.
ISSN:1226-7988
1976-3808
DOI:10.1007/s12205-021-1411-0