Unsaturated Soil Mechanics for Sustainable Urban Living
Impact of Climate
Slope Stability
Effect of Rainfall on Tree Stability
Preventive Measures
Unsaturated Soil Mechanics
Soil Water Characteristic Curve
Permeability Function for Unsaturated Soil
Shear Strength for Unsaturated Soil
Seepage Analyses
Stability Analyses
About this Digital Project
Videorecordings
Stability Analyses
Stability analyses are carried out to obtain the variations of factor of safety during and after rainfall. Parameters required for stability analyses are: (i) slope geometry, (ii) soil properties (unit weight, γ, effective cohesion, c’, effective friction angle, ϕ’ and ϕb angle), (iii) pore-water pressure variations from seepage analyses
Bishop’s simplified method (moment equilibrium)
Saturated soil, Bishop 1955
Unsaturated soil, Fredlund and Rahardjo 1993
Bishop’s simplified method (force equilibrium)
Saturated soil, Bishop 1955
Unsaturated soil, Fredlund and Rahardjo 1993
References
- Rahardjo, H., Satyanaga, A. and Leong, E. C. (2012). “Unsaturated soil mechanics for slope stabilization.” Southeast Asian Geotechnical Journal, March, 43(1), 48-58.
- Leong, E. C. and Rahardjo, H. (2012). “Two and three-dimensional slope stability reanalyses of Bukit Batok slope.” Computer and Geotechnics, January, 42, 81-88. doi | handle
- Rahardjo, H., Santoso, V. A., Leong, E. C., Ng, Y. S. and Hua, C. J. (2011). “Numerical analyses and monitoring performance of residual soil slopes.” Soils and Foundations, Japanese Geotechnical Society, June, 51(3), 471-482. doi |handle
- Fredlund, D. G. and Rahardjo, H. (1993). Soil mechanics for unsaturated soils. John Wiley & Sons, New York, 517 pages (ISBN 0-471-85008-X). doi
- Bishop, A. W. (1955). “The use of the slip circle in the stability analysis of slopes.” Géotechnique, 5(1), 7-17. doi