NDLI: Evaluation of slope stability by finite element method using observed displacement of landslide

Content Provider	Springer Nature Link
Author	Ishii, Yasuo Ota, Keiichi Kuraoka, Senro Tsunaki, Ryosuke
Copyright Year	2011
Abstract	To monitor land deformation in detail, we ran a large-scale field test in which an artificial landslide was induced by the application of a load to a natural slope. The measured landslide displacement was reproduced numerically through the use of finite element model analysis with a two-dimensional elasto-viscoplastic model. The analysis suggested that the strength of the sliding surface decreased as the landslide mass moved. We propose a simple method for estimating safety factors. The method involves back-calculation of shear strength parameters through reproduction of observed landslide displacements and calculating the ratio of driving force to resisting force acting on the sliding surface as modeled by joint elements. This ratio, the “stability index”, shows the same trend as safety factors calculated by a two-dimensional limit equilibrium method and a shear strength reduction method that use back-calculated shear strength parameters estimated from the limit equilibrium state. The results indicate that the stability index may be applicable to the assessment of slope stability.
Starting Page	335
Ending Page	348
Page Count	14
File Format	PDF
ISSN	1612510X
Journal	Landslides
Volume Number	9
Issue Number	3
e-ISSN	16125118
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-10-21
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Landslide Safety factor Finite element method Field test Civil Engineering Agriculture Geography (general) Natural Hazards
Content Type	Text
Resource Type	Article
Subject	Geotechnical Engineering and Engineering Geology

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