Strength reduction method in Barodesy. (March 2018)

• Record Type: Journal Article
• Authors: Schneider-Muntau, Barbara; Medicus, Gertraud; Fellin, Wolfgang
• Is Part Of: Computers and geotechnics. Volume 95(2018)
• Page Start: 57
• Page End: 67
• Publication Date: 2018-03
• Subjects: φ′-c′ reduction method -- Strength reduction method -- Barodesy -- Mohr-Coulomb; Engineering geology -- Data processing -- Periodicals; Soil mechanics -- Data processing -- Periodicals; Rock mechanics -- Data processing -- Periodicals; 624.1510285
• DOI: 10.1016/j.compgeo.2017.09.010
• Languages: English
• ISSNs: 0266-352X

Abstract

Abstract: Strength reduction analysis are very common in geotechnical engineering to define a factor of safety of structures, e.g. slopes. Usually, the Mohr -Coulomb strength parameters friction angle φ ′ and cohesion c ′ are reduced until limit equilibrium is reached. This method is only applicable to material models which utilize a Mohr -Coulomb or similar (e.g. Drucker -Prager ) failure criterion. In this article a strength reduction method for the barodetic material model is introduced and the results of slope stability calculations compared with the results with an elasto-plastic material model (Mohr -Coulomb ) and with the results of an analytical analysis according to Bishop are presented. The strength reduction method for barodesy has been implemented in the Finite Element code Abaqus .