Formulation of uplift capacity of suction caissons using multi expression programming

Suction caissons have increasingly been used as foundations and anchors for deepwater offshore structures in the last decade. The increased use of suction caissons defines a serious need to develop more authentic methods for simulating their behavior. Reliable assessment of uplift capacity of caisso...

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Bibliographic Details
Published in:KSCE journal of civil engineering 2011, 15(2), , pp.363-373
Main Authors: Gandomi, Amir Hossein, Alavi, Amir Hossein, Yun, Gun Jin
Format: Article
Language:English
Subjects:
Aspect ratio
Assessments
Caissons
Civil Engineering
Clay
Clay soils
Cohesive soils
Deep water
Engineering
Engineers
Foundations
Genetic algorithms
Geotechnical Engineering & Applied Earth Sciences
Inclination angle
Industrial Pollution Prevention
Load distribution
Loading rate
Mathematical models
Offshore structures
Parametric analysis
Permeability
Planning
Programming
Shear strength
Soil
Soil permeability
Soil strength
Soils
Uplift
토목공학
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Summary:Suction caissons have increasingly been used as foundations and anchors for deepwater offshore structures in the last decade. The increased use of suction caissons defines a serious need to develop more authentic methods for simulating their behavior. Reliable assessment of uplift capacity of caissons in cohesive soils is a critical issue facing design engineers. This paper proposes a new approach for the formulation of the uplift capacity of suction caissons using a promising variant of Genetic Programming (GP), namely Multi Expression Programming (MEP). The proposed model is developed based on experimental results obtained from the literature. The derived MEP-based formula takes into account the effect of aspect ratio of caisson, shear strength of clayey soil, point of application and angle of inclination of loading, soil permeability and loading rate. A subsequent parametric analysis is carried out and the trends of the results are confirmed via previous studies. The results indicate that the MEP formulation can predict the uplift capacity of suction caissons with an acceptable level of accuracy. The proposed formula provides a prediction performance better than or comparable with the models found in the literature. The MEP-based simplified formulation is particularly valuable for providing an analysis tool accessible to practicing engineers.
ISSN:1226-7988
1976-3808
DOI:10.1007/s12205-011-1117-9