Computational Multiphase Geomechanics

Fusao Oka is a professor emeritus of Kyoto University and president of the LIQCA Liquefaction Geo Research Institute. Until 1997, he was a professor in the Department of Civil and Earth Resources Engineering of Kyoto University. He specializes in computational geomechanics with particular regard to constitutive equations, consolidation, liquefaction, and strain localization analyses. He organized several international conferences and workshops, such as the Fourth International Workshop on Localization and Bifurcation Theory for Soils and Rocks (1997), the ISSMGE International Symposium on Deformation and Progressive Failure in Geomaterials (1997), the International Symposium on Prediction and Simulation Methods for Geohazard Mitigation (2009), and the 14th International Conference of IACMAG (2014). He has published more than 300 papers on geomechanics and is a co-author of Computational Modeling of Multiphase Geomaterials (CRC Press, 2012). Sayuri Kimoto had been working on geomechanics as an associate professor at Kyoto University for years. She is presently a professor of Osaka Sangyo University. She specializes in the elasto-viscoplastic constitutive equations of soils and the numerical analysis of multiphase geomaterials, such as the behavior analysis of seabed ground due to the production of methane gas. She is a co-author of Computational Modeling of Multiphase Geomaterials (CRC Press, 2012).

Contents

Preface xiii

Acknowledgment xvii

Authors xix

1. Fundamental equations of multiphase geomaterials 1

2. Constitutive models of geomaterials 37

3. Governing equations and finite element formulation

for large deformation of three-phase materials 147

4. Strain localization in geomaterials 163

5. Instability analysis of water infiltration into an unsaturated

elasto-viscoplastic material 201

6. Numerical simulation of rainfall infiltration on unsaturated soil slope 221

7. Dynamic analysis of a levee during earthquakes 235

8. Numerical analysis of excavation in soft ground 253

9. Elasto-viscoplastic constitutive modeling of the swelling process of
unsaturated clay 271

10. Numerical analysis of hydrate-bearing subsoil

during dissociation 291

11. A numerical model for the internal erosion

of geomaterials 319

Index 331