Undrained stability of active and passive trapdoors

Shiau, Jim ORCID: https://orcid.org/0000-0002-9220-3184 and Mirza Hassan, Mohammad (2020) Undrained stability of active and passive trapdoors. Geotechnical Research, 7 (1). pp. 40-48.

[img]
Preview
Text (Published Version)
Shiau-2020-Undrained-stability-of-active-and-p (1).pdf
Available under License Creative Commons Attribution 4.0.

Download (1MB) | Preview

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
literature. Surface failure extents are also examined in the paper. The dimensionless ratios employed in this study are useful for preparing design charts with a broad range of trapdoor geometries and soil parameters.


Statistics for USQ ePrint 37573
Statistics for this ePrint Item
Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published online: 22 Nov 2019. ArticleFirst version made accessible according to Creative commons: Attribution 4.0 license.
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 -)
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 -)
Date Deposited: 23 Jan 2020 05:57
Last Modified: 18 Oct 2021 00:07
Uncontrolled Keywords: failure; trapdoor problems; cohesive soil; sinkhole
Fields of Research (2008): 09 Engineering > 0905 Civil Engineering > 090501 Civil Geotechnical Engineering
Fields of Research (2020): 40 ENGINEERING > 4005 Civil engineering > 400502 Civil geotechnical engineering
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
E Expanding Knowledge > 97 Expanding Knowledge > 970104 Expanding Knowledge in the Earth Sciences
E Expanding Knowledge > 97 Expanding Knowledge > 970112 Expanding Knowledge in Built Environment and Design
Identification Number or DOI: https://doi.org/10.1680/jgere.19.00033
URI: http://eprints.usq.edu.au/id/eprint/37573

Actions (login required)

View Item Archive Repository Staff Only