Stability design charts for unsupported wide rectangular tunnels
Article
Article Title | Stability design charts for unsupported wide rectangular tunnels |
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Article Category | Article |
Authors | Shiau, Jim (Author), Sams, Mathew (Author) and Chen, Jing (Author) |
Journal Title | Electronic Journal of Geotechnical Engineering |
Journal Citation | 21 (01), pp. 139-150 |
Number of Pages | 12 |
Year | 2016 |
Place of Publication | United States |
ISSN | 1089-3032 |
Web Address (URL) | http://www.ejge.com/2016/Ppr2016.0009ma.pdf |
Abstract | This paper investigates the stability of a plane strain wide rectangular tunnel in cohesive soils. A strength reduction technique and the finite difference program FLAC are used to determine the factor of safety for unsupported wide rectangular tunnels. Results from the finite difference approach are compared with published rigorous upper and lower bound analysis. The comparison between these two methods finds very good agreement. Stability design charts for wide rectangular tunnels are presented for a wide range of practical scenarios using dimensionless ratios. The potential usefulness of this approach is demonstrated using a number of examples. This is considered a simpler way of analysing the stability of an unsupported tunnel. |
Keywords | wide rectangular tunnel; stability; undrained clay; factor of safety; FLAC; shear strength method; design chart |
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/q4737/stability-design-charts-for-unsupported-wide-rectangular-tunnels
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