This book supplies an overview of recent developments in constitutive modeling, numerical implementation issues, and coupled and dynamic analysis. There is a special section dedicated to the numerical modeling of ground improvement techniques, with applications of numerical methods for solving practical boundary value problems, such as deep excavations, tunnels, shallow and deep foundations, embankments, and slopes. The book not only contains the latest scientific research, it also provides valuable insight into the applications of numerical methods in solving practical engineering problems, thus narrowing the gap between advanced academic research and practical application.