Issue |
E3S Web Conf.
Volume 92, 2019
7th International Symposium on Deformation Characteristics of Geomaterials (IS-Glasgow 2019)
|
|
---|---|---|
Article Number | 16014 | |
Number of page(s) | 5 | |
Section | Numerical Modelling: THCM Coupling, Localisation, Boundary Value Problems | |
DOI | https://doi.org/10.1051/e3sconf/20199216014 | |
Published online | 25 June 2019 |
Slope stability analysis: Barodesy vs linear elastic – perfectly plastic models
1
Graz University of Technology, Institute of Soil Mechanics, Foundation Engineering and Computational Geotechnics, 8010, Austria
2
University of Innsbruck, Unit of Geotechnical and Tunnel Engineering, 6020 Innsbruck, Austria
* Corresponding author: franz.tschuchnigg@TUGraz.at
The results of slope stability analysis are not unique. Different factors of safety are obtained investigating the same slope. The differences result from different constitutive models including different failure surfaces. In this contribution, different strength reduction techniques for two different constitutive models (linear elastic - perfectly plastic model using a Mohr-Coulomb failure criterion and barodesy) have been investigated on slope stability calculations for two different slope inclinations. The parameters for Mohr – Coulomb are calibrated on peak states of element tests simulated with barodesy for different void ratios. For both slopes the predictions of the factors of safety are higher with barodesy than with Mohr-Coulomb. The difference is to some extend explained by the different shapes of failure surfaces and thus different values for peak strength under plane strain conditions. The plane strain predictions of Mohr-Coulomb are conservative compared to barodesy, where the failure surface coincides with Matsuoka-Nakai.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.