Journal
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
Volume 45, Issue 13, Pages 1972-1987Publisher
WILEY
DOI: 10.1002/nag.3251
Keywords
landslides; limit analysis; plasticity analysis; ridge failure surface; slope stability
Funding
- National Science Foundation [CMMI-1901582]
- Horace Rackham School of Graduate Studies at the University of Michigan
- National Research Foundation of Korea (NRF) - Korea government (MSIT) [2021R1G1A1003943]
- National Research Foundation of Korea [2021R1G1A1003943] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The study explores the stability of slopes in narrow spaces, introducing the ridge mechanism as a solution. By utilizing the ridge mechanism, a more accurate stability factor solution can be obtained.
Three-dimensional analysis of stability is carried out for slopes with the failure mechanism confined to a narrow space. A curvilinear cone failure surface is modified by removing a slice from its central portion, to make the failure mechanism fit in the narrow space. The resulting surface is no longer smooth, and it is referred to as the ridge mechanism for a distinct ridge in the failure surface. The analysis of narrow slopes based on the ridge mechanism appears to yield lower stability factors than the mechanisms used in geotechnical engineering thus far. Kinematic limit analysis utilized in calculations provides an upper bound to the true stability factor solution, hence the newly proposed mechanism delivers a more accurate solution.
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