Proceedings of the
8th International Symposium on Geotechnical Safety and Risk (ISGSR)
14 – 16 December 2022, Newcastle, Australia
Editors: Jinsong Huang, D.V. Griffiths, Shui-Hua Jiang, Anna Giacomini, Richard Kelly
doi:10.3850/978-981-18-5182-7_22-004-cd
Influence of Anisotropic Soil Spatial Variability in the Horizontal Plane on 3D Slope Reliability
Section of Geo-Engineering, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, The Netherlands.
ABSTRACT
The influence of spatial variability in shear strength properties on the probabilistic stability of an idealised 3D slope has been investigated using the random finite element method. Considering the method of construction of long 3D slopes, such as dykes and embankments, different scales of fluctuation of shear strength properties in the two horizontal directions have been modelled using random fields. The results indicate that considering this anisotropy can have a significant influence on the probabilistic characteristics and potential failure volumes of a 3D embankment slope. It was observed that the spatial correlation of properties along the embankment length has a much greater influence than the spatial correlation of properties perpendicular to the length.
Keywords: random fields, slope stability, spatial variability, three dimensional.
