2024-03-29T13:02:02Z
https://tsukuba.repo.nii.ac.jp/oai
oai:tsukuba.repo.nii.ac.jp:00027798
2022-04-27T08:55:46Z
2871:2875:1963
3:62:5594:1858
Evaluation of slope stability by finite element method using observed displacement of landslide
石井, 靖雄
Ishii, Yasuo
Ota, Keiichi
Kuraoka, Senro
Tsunaki, Ryosuke
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.
journal article
Springer Verlag
2012-09
application/pdf
Landslides
3
9
335
348
http://hdl.handle.net/2241/117748
1612-510X
AA11917577
https://tsukuba.repo.nii.ac.jp/record/27798/files/LS_9-3.pdf
eng
10.1007/s10346-011-0303-7
© Springer-Verlag 2011
The original publication is available at www.springerlink.com