TY - GEN
T1 - Slope stability analysis
T2 - Barodesy vs linear elastic – Perfectly plastic models
AU - Tschuchnigg, Franz
AU - Medicus, Gertraud
AU - Schneider-Muntau, Barbara
PY - 2019/6/25
Y1 - 2019/6/25
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85069708422&partnerID=8YFLogxK
U2 - 10.1051/e3sconf/20199216014
DO - 10.1051/e3sconf/20199216014
M3 - Conference contribution
AN - SCOPUS:85069708422
T3 - E3S Web of Conferences
BT - 7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019
A2 - Ibraim, Erdin
A2 - Tarantino, Alessandro
PB - EDP Sciences
ER -