Undrained stability of active and passive trapdoors
Article
Article Title | Undrained stability of active and passive |
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ERA Journal ID | 212617 |
Article Category | Article |
Authors | Shiau, Jim (Author) and Mirza Hassan, Mohammad (Author) |
Journal Title | Geotechnical Research |
Journal Citation | 7 (1), pp. 40-48 |
Number of Pages | 9 |
Year | 2020 |
Publisher | ICE Publishing |
Place of Publication | United Kingdom |
ISSN | 2052-6156 |
Digital Object Identifier (DOI) | https://doi.org/10.1680/jgere.19.00033 |
Web Address (URL) | https://www.icevirtuallibrary.com/doi/abs/10.1680/jgere.19.00033 |
Abstract | The recent growth in the number of sinkhole occurrences due to human activities has highlighted the need for better understanding and prediction of the problem. This paper investigates the use of Broms and Bennermark’s original stability number for trapdoor problems in cohesive soil. The shear-strength-reduction method built in a finite-difference method software program (FLAC) is used to obtain the factor of safety (FOS) under different combinations of pressures for collapse and blowout. Unlike previous research on the use of critical pressure ratios, the FOS results are now functions of the original stability number and depth ratio. The obtained numerical results are compared and validated by using rigorous upper- and lower-bound finite-element limit analysis, as well as other existing solutions available in the |
Keywords | failure; trapdoor problems; cohesive soil; sinkhole |
ANZSRC Field of Research 2020 | 400502. Civil geotechnical engineering |
Byline Affiliations | School of Civil Engineering and Surveying |
Open access url | http://creativecommons.org/licenses/by/4.0/ |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5805/undrained-stability-of-active-and-passive-trapdoors
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