Physics-based and data-driven modeling for stability evaluation of buried structures in natural clays
Article
Article Title | Physics-based and data-driven modeling for stability evaluation of buried structures in natural clays |
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ERA Journal ID | 201130 |
Article Category | Article |
Authors | Lai, Fengwen (Author), Shiau, Jim (Author), Keawsawasvong, Suraparb (Author), Chen, Fuquan (Author), Banyong, Rungkhun (Author) and Seehavong, Sorawit (Author) |
Journal Title | Journal of Rock Mechanics and Geotechnical Engineering |
Journal Citation | 15 (5), pp. 1248-1262 |
Number of Pages | 17 |
Year | 2023 |
Publisher | Kexue Chubanshe,Science Press |
Elsevier | |
Place of Publication | China |
ISSN | 1674-7755 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.jrmge.2022.07.006 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S1674775522001585 |
Abstract | This study presents a hybrid framework to predict stability solutions of buried structures under active trapdoor conditions in natural clays with anisotropy and heterogeneity by combining physics-based and data-driven modeling. Finite-element limit analysis (FELA) with a newly developed anisotropic undrained shear (AUS) failure criterion is used to identify the underlying active failure mechanisms as well as to develop a numerical (physics-based) database of stability numbers for both planar and circular trapdoors. Practical considerations are given for natural clays to three linearly increasing shear strengths in compression, extension, and direct simple shear in the AUS material model. The obtained numerical solutions are compared and validated with published solutions in the literature. A multivariate adaptive regression splines (MARS) algorithm is further utilized to learn the numerical solutions to act as fast FELA data-driven surrogates for stability evaluation. The current MARS-based modeling provides both relative importance index and accurate design equations that can be used with confidence by practitioners. |
Keywords | Buried structures; Natural clays; Active trapdoor; Undrained stability; Multivariate adaptive regression splines (MARS); Finite element limit analysis (FELA) |
ANZSRC Field of Research 2020 | 400502. Civil geotechnical engineering |
Byline Affiliations | Southeast University, China |
School of Engineering | |
Thammasat University, Thailand | |
Fuzhou University, China | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q7q38/physics-based-and-data-driven-modeling-for-stability-evaluation-of-buried-structures-in-natural-clays
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