Simplified Analytical and Numerical Analysis for Stability of Tunnel and Foundation Containing Sloping Ground

Open Access

Year : 2021 | Volume : | Issue : 2 | Page : 24-34
By

    Md. Foisal Haque

  1. PhD Student, Department of Geotechnical Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh

Abstract

Tunnel, foundation and superstructure effect on the stability of slope. Numerical and simplified analytical analyses evaluate behavior of slope under various conditions. However, factor of safety indicates failure criteria of slope. Present research develops some simplified analytical formulae for a specific model and numerical code (PLAXIS 3D) performs finite element analysis of this model. During numerical analysis considers Mohr-Coulomb material model and drained condition. Factor of safety assesses from variations of sloping angles (30°, 35° and 40°) and horizontal distances (0 m, 1 m, 2 m, 3 m, 4 m, 5 m and 6 m) between sloping face and tunnel as well as foundation face. Numerical and analytical results match at zero horizontal distance for each angle of slope. Angle of failure surface varies 27.7, 28.6 and 28.3 percentages of 30°, 35° and 40° slopping angles respectively based on analytical analysis. Little difference between analytical and numerical results of some locations expresses accuracy of newly developed simplified formulae.

Keywords: Analytical, Failure Surface, Numerical, Tunnel and Foundation, Slope Stability.

[This article belongs to International Journal of Geological and Geotechnical Engineering(ijgge)]

How to cite this article: Md. Foisal Haque Simplified Analytical and Numerical Analysis for Stability of Tunnel and Foundation Containing Sloping Ground ijgge 2021; 7:24-34
How to cite this URL: Md. Foisal Haque Simplified Analytical and Numerical Analysis for Stability of Tunnel and Foundation Containing Sloping Ground ijgge 2021 {cited 2021 Dec 30};7:24-34. Available from: https://journals.stmjournals.com/ijgge/article=2021/view=90300

Full Text PDF Download

Browse Figures

References

1. Rouaiguia and M.A. Dahim, “”Numerical Modeling of Slope Stability Analysis,”” International Journal of Engineering Science and Innovative Technology (IJESIT), vol. 2, no. 3, pp. 533–542, May 2013.
2. R.H. Chen and J.L. Chameau, “”Three-dimensional limit equilibrium analysis of slopes,”” Geotechnique, vol. 32, no. 1, pp. 31–40, 1983.
3. J. M. Duncan, “”State of the Art: Limit Equilibrium and Finite Element Analysis of Slopes,”” Journal of Geotechnical Engineering, vol. 122, no. 7, pp. 577–596, 1996.
4. A. Kourdey, M. AIheib, J.-P. Piguet and T. Korini, “”Evaluation of Slope Stability by Numerical Methods,”” in 17th International Mining Congress and Exhibition of Turkey-IMCET2001, Turkey, 2001.
5. N. Albataineh, Slope Stability Analysis Using 2D And 3D Methods, Akron: The Graduate Faculty of The University of Akron, 2006.
6. D.V. Griffiths and P. A. Lane, “”Slope stability analysis by finite elements,”” Geotechnique, vol. 49, no. 3, pp. 387–403, 1999.
7. A. S. Azzouz and M.M. Baligh, “”Loaded areas on cohesive slopes,”” Journal of the Geotechnical Engineering Division, ASCE, vol. 109, no. 5, pp. 726–729, 1983.
8. W.J. Rankin, “”Ground movements resulting from urban tunnelling: predictions and effects,”” Engineering Geology, vol. 5, pp. 79–92, 1 January 1988.
9. A.I. Husein Malkawi, W.F. Hassan and F. Abdulla, “”Uncertainty and reliability analysis applied to slope stability,”” Structural Safety Journal, vol. 22, pp. 161–187, 2000.
10. J.M. Duncan and S.G. Wright, Soil Strength and Slope Stability, NY: John Wiley and Sons, 2005.
11. K.S. NG and Y.M. CHEW, “”Slope Stability Analysis Of Embankment Over Stone Column Improved Ground,”” Journal of Engineering Science and Technology, vol. 14, no. 6, pp. 3582–3596, 2019.
12. P.K. Singh, H. Lahkar, K.V. Islary and D. Goswami, “”3-Dimensional Slope Stability Analysis Using PLAXIS-3D,”” in Indian Geotechnical Conference, IIT Guwahati, India, 2017.
13. M.D. Bolton, “”The Strength and Dilatancy of Sands,”” Geotechnique, vol. 36, no. 1, pp. 65–78, 1986.


Regular Issue Open Access Article
Volume 7
Issue 2
Received December 1, 2021
Accepted December 7, 2021
Published December 30, 2021