Enhancing CPT-based suction caisson penetration design : insights from back-analysis of large-scale field installation data

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Suryasentana, Stephen K. and O’Boyle, Brendan F. and Davidson, John and Bartkus, Sarunas and Schroeder, Felix and Zhou, Zefeng (2025) Enhancing CPT-based suction caisson penetration design : insights from back-analysis of large-scale field installation data. Journal of Geotechnical and Geoenvironmental Engineering, 151 (7). 04025053. ISSN 1090-0241 (https://doi.org/10.1061/jggefk.gteng-13304)

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Abstract

This paper presents a detailed back-analysis of large-scale field data from suction caisson installations in complex, layered soil conditions, enhancing the understanding of caisson installation interaction through a refined assessment of the parameters for cone penetration test (CPT)-based installation calculation methods. Leveraging CPT and suction caisson installation data from a large database, this paper proposes a more nuanced CPT-based design approach tailored for such complex soil conditions. The findings highlight notable parameter differences between dilative and contractive soils, suggesting the necessity of treating these two groups distinctively. Through a comparative analysis with existing CPT-based methods, this research highlights areas where current practices align well with field realities and identifies areas where crucial adjustments are needed to enhance design accuracy. The paper also proposes a quantile-based approach for high estimate installation calculations, which demonstrates an effective balance between safety and excessive conservatism.

ORCID iDs

Suryasentana, Stephen K. ORCID logoORCID: https://orcid.org/0000-0001-5460-5089, O’Boyle, Brendan F., Davidson, John, Bartkus, Sarunas, Schroeder, Felix and Zhou, Zefeng;
CORE (COnnecting REpositories)