Zhang, Xue 
ORCID: 0000-0002-0892-3665, Wang, Liang, Krabbenhoft, Kristian and Tinti, Stefano
(2020)
A case study and implication: particle finite element modelling of the 2010 Saint-Jude sensitive clay landslide.
LANDSLIDES, 17 (5).
pp. 1117-1127.
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2019ZhangWangLandslides.pdf - Published version Download (5MB) | Preview |
Abstract
Modelling of landslides in sensitive clays has long beenrecognised as a challenge. The strength reduction of sensitive clayswhen undergoing plastic deformation makes the failure proceed ina progressive manner such that a small slope failure may lead to aseries of retrogressive failures and thus to an unexpected cata-strophic landslide. The clay in the entire process may mimic bothsolid-like (when it is intact) and fluid-like (when fully remoulded,especially for quick clays) behaviours. Thereby, a successful nu-merical prediction of landslides in sensitive clays requires not onlya robust numerical approach capable of handling extreme materialdeformation but also a sophisticated constitutive model to de-scribe the complex clay behaviour. In this paper, the particle finiteelement method (PFEM) associated with an elastoviscoplasticmodel with strain softening is adopted for the reconstruction ofthe 2010 Saint-Jude landslide, Quebec, Canada, and detailed com-parisons between the simulation results and available data arecarried out. It is shown that the present computational frameworkis capable of quantitatively reproducing the multiple rotationalretrogressive failure process, the final run-out distance and theretrogression distance of the Saint-Jude landslide. Furthermore,the failure mechanism and the kinematics of the Saint-Jude land-slide and the influence of the clay viscosity are investigated nu-merically, and in addition, their implications to real landslides insensitive clays are discussed.
| Item Type: | Article |
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| Uncontrolled Keywords: | Sensitive clay, Retrogressive landslide, Progressive failure, Strain softening, PFEM |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 02 Jan 2020 15:45 |
| Last Modified: | 19 Jan 2023 00:12 |
| DOI: | 10.1007/s10346-019-01330-4 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3067529 |
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