Dr Yao is a Professor at Beihang University, Beijing, China. He is Vice Chairman of the Soil Mechanics and Geotechnical Engineering Branch of the China Civil Engineering Society and Deputy Director of the special Committee of Geotechnical Mechanics, Chinese Society of Mechanics. His research interests include geotechnical constitutive theory, the application of constitutive theory in numerical calculations and geotechnical problems in airports, highways and railways

• 1. Introduction2. Elastoplastic constitutive modeling of soils3. Transformed stress method for 3D generalization of constitutive model4. Original UH model: UH model for clay5. Generalized UH model: UH model for clays and sands6. Extended UH model considering temperature effects7. Extended UH model considering time effects8. Extended UH model reflecting small strain behaviour9. Extended UH Model for Unsaturated Soils10. Numerical Implementation and Application of UH Models

Dr Yao is a Professor at Beihang University, Beijing, China. He is Vice Chairman of the Soil Mechanics and Geotechnical Engineering Branch of the China Civil Engineering Society and Deputy Director of the special Committee of Geotechnical Mechanics, Chinese Society of Mechanics. His research interests include geotechnical constitutive theory, the application of constitutive theory in numerical calculations and geotechnical problems in airports, highways and railways

• 1. Introduction2. Elastoplastic constitutive modeling of soils3. Transformed stress method for 3D generalization of constitutive model4. Original UH model: UH model for clay5. Generalized UH model: UH model for clays and sands6. Extended UH model considering temperature effects7. Extended UH model considering time effects8. Extended UH model reflecting small strain behaviour9. Extended UH Model for Unsaturated Soils10. Numerical Implementation and Application of UH Models

Dr Yao is a Professor at Beihang University, Beijing, China. He is Vice Chairman of the Soil Mechanics and Geotechnical Engineering Branch of the China Civil Engineering Society and Deputy Director of the special Committee of Geotechnical Mechanics, Chinese Society of Mechanics. His research interests include geotechnical constitutive theory, the application of constitutive theory in numerical calculations and geotechnical problems in airports, highways and railways

• 1. Introduction2. Elastoplastic constitutive modeling of soils3. Transformed stress method for 3D generalization of constitutive model4. Original UH model: UH model for clay5. Generalized UH model: UH model for clays and sands6. Extended UH model considering temperature effects7. Extended UH model considering time effects8. Extended UH model reflecting small strain behaviour9. Extended UH Model for Unsaturated Soils10. Numerical Implementation and Application of UH Models