Modelling soil stability in wide tunnels using FELA and multivariate adaptive regression splines analysis
Article
Article Title | Modelling soil stability in wide tunnels using FELA and multivariate adaptive regression splines analysis |
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ERA Journal ID | 213704 |
Article Category | Article |
Authors | Lai, Van Qui, Shiau, Jim, Promwichai, Thanachon, Limkatanyu, Suchart, Banyong, Rungkhun and Keawsawasvong, Suraparb |
Journal Title | Modeling Earth Systems and Environment |
Journal Citation | 9 (2), pp. 2993-3008 |
Number of Pages | 16 |
Year | 2023 |
Publisher | Springer |
ISSN | 2363-6203 |
2363-6211 | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s40808-022-01595-0 |
Web Address (URL) | https://link.springer.com/article/10.1007/s40808-022-01595-0 |
Abstract | Stability evaluations of soil or rock excavation are significantly affected by the shape of the underground cavity. Whilst most of the previous stability research was in circular tunnelling problems, rectangular tunnels are nevertheless seldom studied even though the latter is gaining more popularity in practices, especially in railway engineering. The purpose of the technical note is to bridge the current research gap using the robust lower and upper bound finite element limit analysis to study the undrained stability of wide rectangular tunnels in cohesive soils under both collapse and blowout scenarios in two-dimensional conditions. A dimensionless stability number is presented to define the solution and the associated failure mechanisms are examined with three distinct types of mechanisms. In addition, a machine learning model, namely, multivariate adaptive regression splines (MARS), is used to develop design equations for evaluating soil stability. The findings in this study provide a reliable solution to improve the current design standard for the stability of rectangular underground spaces in undrained clays. |
Keywords | Limit analysis; MARS; Stability analysis; Wide rectangular tunnel |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 400502. Civil geotechnical engineering |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | Ho Chi Minh City University of Technology, Vietnam |
Vietnam National University, Vietnam | |
School of Engineering | |
Thammasat University, Thailand | |
Prince of Songkla University, Thailand |
https://research.usq.edu.au/item/wzx87/modelling-soil-stability-in-wide-tunnels-using-fela-and-multivariate-adaptive-regression-splines-analysis
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