Numerical Analyses of a Landslide in the Sensitive Saint Adelphe Clay
Publication: Geo-Congress 2023
ABSTRACT
This paper presents nonlinear dynamic analyses (NDAs) of the 1988 Saint Adelphe landslide using FLAC 8.1 with the user defined constitutive models PM4Silt and PM4Sand. The analyses utilized previously characterized and developed laboratory and field data, ground motions, and site conditions. A method was introduced for modeling large sensitivities and high peak strengths using the PM4Silt constitutive model. Calibration of the constitutive model and NDAs of the landslide are presented. The results of the analyses indicate that the numerical methods used could reasonably approximate the observed failure. The results also highlighted the need for the development of models which can directly account for high peak undrained strength ratios and large strength loss in analyses. The implications of these results on practice are discussed.
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REFERENCES
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Geo-Congress 2023
Pages: 587 - 595
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Published online: Mar 23, 2023
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