Stability of earth slopes. Part I: two-dimensional analysis in closed-form

Authors

  • Lysandros Pantelidis,

    Corresponding author
    • Department of Civil Engineering and Geomatics, Cyprus University of Technology, Lemesos, Cyprus
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  • D. V. Griffiths

    1. Department of Civil and Environmental Engineering, Colorado School of Mines, Golden, CO, U.S.A.
    2. Australian Research Council Centre of Excellence for Geotechnical Science and Engineering, University of Newcastle, Callaghan, NSW, Australia
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Correspondence to: L. Pantelidis, Department of Civil Engineering and Geomatics, Cyprus University of Technology, P.O. Box 50329, 3603 Lemesos, Cyprus.

E-mail: lysandros.pantelidis@cut.ac.cy

SUMMARY

A closed-form solution (CFS) satisfying both equilibrium of moments and forces for the stability analysis of earth slopes in 2D is proposed. The sliding surface is assumed circular and treated as a rigid body, allowing the internal state of stress to be ignored. The proposed solution can be applied to both homogenous and non-homogenous slopes of either simple or complex geometry, and can also deal with any kind of additional loading. The method is based on the fact that, all possible forces acting on the slope can be projected onto the failure surface where they are broken into driving and resisting ones. Comparison of the safety factors obtained by the proposed CFS and those obtained by traditional limit equilibrium methods, as applied to several test examples, indicates that the proposed method is more conservative, whereas moreover, it gives a more realistic point of view for the formation of tension crack in slopes. Copyright © 2012 John Wiley & Sons, Ltd.

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