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- W4283165789 endingPage "111767" @default.
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- W4283165789 abstract "Skirted circular foundations have been widely used in offshore engineering and are subjected to combined vertical (V), horizontal (H) and moment (M) loading. Undrained load-carrying capacities of skirted circular foundations under combined V–H-M loading were derived from the finite element limit analysis (FELA) in this paper considering a wide range of embedment ratios and soil strength heterogeneity indices. A double-ellipse fitting strategy was proposed and employed to fit numerical results with a unified failure envelope expression. Due to complex interactions between different variables, gradient boosting machine (GBM) algorithm was introduced to learn the relationship between fitting parameters in the failure envelope expression and their influencing variables based on the database constructed by FELA. The results in this study show that the double-ellipse fitting strategy provides comparably accurate and more conservative predictions of failure envelopes compared with existing fitting strategies. The GBM model developed in this study has a good performance in predicting fitting parameters of failure envelopes. The importance of influencing variables and the effect of database size and data orthogonality on the performance of GBM model were discussed. The method based on double-ellipse fitting strategy and GBM algorithm can be implemented in a program to generate failure envelopes conveniently." @default.
- W4283165789 created "2022-06-21" @default.
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- W4283165789 date "2022-08-01" @default.
- W4283165789 modified "2023-09-23" @default.
- W4283165789 title "Prediction of undrained failure envelopes of skirted circular foundations using gradient boosting machine algorithm" @default.
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- W4283165789 doi "https://doi.org/10.1016/j.oceaneng.2022.111767" @default.
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