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New failure mechanism for evaluating ultimate inclined load adjacent to slope

Author

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  • Hongwei Fang
  • Ning Wang
  • Yixiang Xu

Abstract

A new failure mechanism is proposed for calculating the ultimate inclined load adjacent to the slope, i.e., the slope is in the limit state when the critical slope contour and the slope surface are at the critical position where two intersections will occur. The conventional view is that the critical slope contour calculated by the method of characteristics has only a concave shape. This study found that the critical slope contour changes from concave to convex when the inclined load imposed on the slope top surface increases. The feasibility of the proposed method is verified by the finite element limit analysis (FELA) and the definition of the ultimate load. The parametric analysis showed that the current method of characteristics (CMOC) overestimated the ultimate inclined load and gave an incorrect conclusion since it assumed larger failure models at a low strength ratio or large friction angle. The proposed method does not require assumption or search of the failure models, and it can solve the shortcomings of CMOC.

Suggested Citation

  • Hongwei Fang & Ning Wang & Yixiang Xu, 2023. "New failure mechanism for evaluating ultimate inclined load adjacent to slope," PLOS ONE, Public Library of Science, vol. 18(7), pages 1-16, July.
    • Handle: RePEc:plo:pone00:0289015
    DOI: 10.1371/journal.pone.0289015
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