Using PCE metamodels to analyse the uplift capacity of circular plate anchors in sand

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4. Using PCE metamodels to analyse the uplift capacity of circular plate anchors in sand

This paper aims to analyse the uplift capacity of circular plate anchors in sand through the use of Polynomial Chaos Expansion (PCE) metamodels. In general, a metamodel is a numerical method that surrogates the behavior of an original model to predict some selected output of interest. The PCE technique builds an approximation function to emulate the original model response, and different numerical features have been employed in this study. The metamodels for circular plate anchor capacity are developed by integrating databases from multiple sources, including centrifuge experiments and finite element analyses. The data covers anchor capacity in both loose to dense sand at embedments ranging from 1 to 12 times the anchor width, thus encompassing shallow to deep failure mechanisms of the plate. These datasets are then used to train the PCEs to capture the effect of three influencing parameters on anchor capacity. Overall, the developed PCE metamodels is able to predict the anchor capacity with good accuracies. The study also focuses on how the PCE performance can be continuously enhanced by integrating new, strategically selected finite element simulations into the metamodel. The proposed approach aims to demonstrate how the results of existing experimental and/or numerical studies can be used to develop reliable estimator tools, which can in turn be employed for a first order estimates of circular plate anchor capacities.

5th International Symposium on Frontiers in Offshore Geotechnics (ISFOG2025)

5 - Data Analytics and Machine Learning