Strength reduction method in Barodesy

Abstract Strength reduction analysis are very common in geotechnical engineering to define a factor of safety of structures, e.g. slopes. Usually, the M ohr -C oulomb 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 M ohr -C oulomb or similar (e.g. D rucker -P rager ) 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 (M ohr -C oulomb ) and with the results of an analytical analysis according to B ishop are presented. The strength reduction method for barodesy has been implemented in the Finite Element code A baqus .

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