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Uncertainty in Capacity of Spudcan Foundation from CPT Data
Cone penetrometer is the most commonly used instrument over the decades for profiling in-situ undrained shear strength at offshore soft clay seabed soil, which is a necessary parameter to determine the bearing capacity of various offshore foundations, such as spudcan, mudmat, and pile foundation for different offshore structures. It is observed that the undrained shear strength estimated by the cone penetration test (CPT) is highly uncertain due to inherent variability, transformation, or model uncertainty and measurement uncertainty. Therefore, the ultimate capacity of such foundations is inherently uncertain due to the uncertainty in input soil shear strength. This paper examines the degree of uncertainty involved while determining soil parameters from CPT data of soft clay seabed soil using a probabilistic approach. The uncertainty in predicting the bearing capacity of spudcan foundation is assessed using Monte Carlo simulation considering the variability of the undrained shear strength of the soil. Finally, the deterministic capacity of the foundation is compared with the probabilistic approach.
Uncertainty in Capacity of Spudcan Foundation from CPT Data
Cone penetrometer is the most commonly used instrument over the decades for profiling in-situ undrained shear strength at offshore soft clay seabed soil, which is a necessary parameter to determine the bearing capacity of various offshore foundations, such as spudcan, mudmat, and pile foundation for different offshore structures. It is observed that the undrained shear strength estimated by the cone penetration test (CPT) is highly uncertain due to inherent variability, transformation, or model uncertainty and measurement uncertainty. Therefore, the ultimate capacity of such foundations is inherently uncertain due to the uncertainty in input soil shear strength. This paper examines the degree of uncertainty involved while determining soil parameters from CPT data of soft clay seabed soil using a probabilistic approach. The uncertainty in predicting the bearing capacity of spudcan foundation is assessed using Monte Carlo simulation considering the variability of the undrained shear strength of the soil. Finally, the deterministic capacity of the foundation is compared with the probabilistic approach.
Uncertainty in Capacity of Spudcan Foundation from CPT Data
Lecture Notes in Civil Engineering
Satyanarayana Reddy, C. N. V. (editor) / Saride, Sireesh (editor) / Haldar, Sumanta (editor) / Dutta, Dipanjan (author) / Haldar, Sumanta (author)
2021-08-03
11 pages
Article/Chapter (Book)
Electronic Resource
English
Uncertainty in Capacity of Spudcan Foundation from CPT Data
| TIBKAT | 2021
The undrained bearing capacity of a spudcan foundation under combined loading in soft clay
| British Library Online Contents | 2011