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Stability analysis of sandy slope considering anisotropy effect in friction angle

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Abstract

This paper aims to investigate the effect of anisotropy of shear strength parameter on the stability of a sandy slope by performing the limit equilibrium analysis. Because of scarcity of mathematical equation for anisotropic friction angle of sand, at first, all results of principal stress rotation tests are processed by artificial neural network and a computational procedure is developed for determining sand friction angle subjected to various loading directions. By implementing this procedure, slope stability analysis is performed in both isotropic and anisotropic conditions. The results indicate that while isotropic slope stability overestimates the factor of safety between 5 and 25% which the deviation is more for flatter slope, the location of critical slip surface is coincident in both conditions. Also in specific slip surface, the parameters of face angle, geometry of slip surface and soil properties relating to anisotropy are the main factors governing the result of anisotropic slope stability.

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Authors and Affiliations

  1. Faculty of Engineering, Azarbaijan Shahid Madani University, Kilometere 35 of Tabriz/Azarshahr Road, P.O. Box 53714-161, Tabriz, Iran

    HAMED FARSHBAF AGHAJANI

  2. School of Civil Engineering, Iran University of Science and Technology, P.O.B. 16765-163, Narmak, Tehran, Iran

    HOSSEIN SALEHZADEH & HABIB SHAHNAZARI

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  1. HAMED FARSHBAF AGHAJANI
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  2. HOSSEIN SALEHZADEH
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  3. HABIB SHAHNAZARI
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Correspondence to HOSSEIN SALEHZADEH.

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AGHAJANI, H.F., SALEHZADEH, H. & SHAHNAZARI, H. Stability analysis of sandy slope considering anisotropy effect in friction angle. Sadhana 40, 1955–1974 (2015). https://doi.org/10.1007/s12046-015-0414-2

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  • DOI: https://doi.org/10.1007/s12046-015-0414-2

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