Numerical Investigation of Undrained Trapdoors in Three Dimensions
Article
Article Title | Numerical Investigation of Undrained Trapdoors in Three Dimensions |
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ERA Journal ID | 210664 |
Article Category | Article |
Authors | Shiau, Jim (Author) and Mirza Hassan, Mohammad (Author) |
Journal Title | International Journal of Geosynthetics and Ground Engineering |
Journal Citation | 7 (2), pp. 1-12 |
Article Number | 30 |
Number of Pages | 12 |
Year | 2021 |
Place of Publication | Germany |
ISSN | 2199-9260 |
2199-9279 | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s40891-021-00283-w |
Web Address (URL) | https://link.springer.com/article/10.1007/s40891-021-00283-w |
Abstract | The stability of soil overlying the cavity is often a concern when it comes to the risk of sinkhole occurrences. Current sinkhole studies have been centred on the use of geophysical techniques to detect underground cavity sizes and associated depths. With the measured information, it is possible to theoretically predict the extent of a ground surface collapse. This paper studies the stability of trapdoors and the associated extent of ground surface failure. The shear strength reduction method is used to obtain factors of safety for various scenarios associated with the collapse of a three-dimensional trapdoor underlying undrained clay. Numerical solutions are verified by using the finite element limit analysis technique with upper and lower bound theorems and other published results. A number of practical examples are provided to demonstrate the use of design charts and tables, which can be used together with the application of geophysical tools to predict sinkhole occurrences. |
Keywords | Sinkhole, FLAC3D, Strength reduction method, Surface failure extent |
ANZSRC Field of Research 2020 | 400502. Civil geotechnical engineering |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | School of Civil Engineering and Surveying |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q655w/numerical-investigation-of-undrained-trapdoors-in-three-dimensions
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