Critical State Based Constitutive Models and Simulations
The group develops various elasto-plastic models based on the critical state soil mechanics.
- Advanced critical state model – incorporating anisotropy, small strain stiffness, stiffness degradation, lode angle effects
Wongsoraj, J., K. Soga and R.J. Mair, “Modelling of Long-Term Ground Response to Tunnelling Under St. James's Park, London,” Géotechnique, February 2007, Vol. 57, No. 1, pp. 75-90
Wongsoraj, J., K. Soga and R.J. Mair, “Tunnelling Induced Consolidation Settlements in London Clay,” Géotechnique, May 2013, Vol. 63, No. 13, pp. 1103-1115
- Unsaturated soil models – incorporating suction effects and cohesion and dilation enhancements
Robert, D., K. Soga, T.D. O'Rourke and T. Sakanoue, “Lateral Load-Displacement Behavior of Pipelines in Unsaturated Sands,” Journal of Geotechnical and Geoenvironmental Engineering, American Society of Civil Engineers, November 2016, Vol. 142, No. 11, 13 pp.
Fern, J., D. Robert and K. Soga, “Modeling the Stress-Dilatancy Relationship of Unsaturated Silica Sand in Triaxial Compression Tests,” Journal of Geotechnical and Geoenvironmental Engineering, American Society of Civil Engineers, November 2016, Vol. 142, No. 11, 15 pp.
- Shear localization models – for drained and undrained dense sand
Mallikarachchi, H. and K. Soga, “Post-localisation analysis of drained and undrained dense sand with a nonlocal critical state model,” Computers and Geotechnics, 2020, Vol. 124, p.103572.
Mallikarachchi, H. and K. Soga, “A two-scale constitutive framework for modelling localised deformation in saturated dilative hardening material,” International Journal for Numerical and Analytical Methods in Geomechanics, 2020, Vol. 44(14), pp.1958-1982.
- Bonded soil models – for methane hydrate soils and cemented sands
Uchida, S. , K. Soga and K. Yamamoto, “Methane Hydrate Critical State Soil Constitutive Model,” Journal of Geophysical Research – Solid Earth, March 2012, Vol. 117, 13 pp.
- Normalizations of Cam-clay models and Norsand model