Displacement-based stability analysis for anchor reinforced slope

Document Type

Article

Publication Date

1-1-1998

Abstract

Combining the conventional method of slices for slope stability analysis with the previously derived analytical solutions for the anchor-soil interaction, a displacement-based approach for the stability analysis of anchor reinforced slope has been developed. The procedure for evaluating the working forces in the anchor, the global factor of safety, and the limits of the anchor working force is described in detail. Furthermore, the effects of reinforcement on the slope stability due to different parameters, such as soil properties, anchor characteristics and anchor-soil interface properties were studied. The numerical results demonstrate the progressively mobilized anchor forces and their distribution along a vertical section of the slope, and the expected global factor of safety at each stage of soil movement along the slip surface. Also, for a given anchor reinforced slope, the anchor working limit is generated along a vertical section of the slope, which controls the anchor resistance to the slope and limits the potential soil movement. Based on the results of the analysis, the general guideline for the design of an anchor reinforced slope is discussed.

Publication Title

Soils and Foundations

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