Soil Structure Interaction Analysis by Finite Element Method

Soil-structure interaction is interdisciplinary field which involves structural and geotechnical engineering. In the conventional non-interaction analysis of building frame structural designer assumed that columns are resting on unyielding support. Similarly, in foundation design, foundation settlements are calculated without considering the influence of the structural stiffness. But a realistic analysis and design procedure should include actual support flexibility, nonlinear and heterogeneous nature of the soil together with nonlinear soil-structure interaction effects. Such an analysis would result in overall stiffness of the soil-foundation-structure system, realistic to the existing conditions. Although, interaction effect is ignored to simplify the mathematical model but neglecting the interaction between soils and structures may result in a design that is either unnecessarily costly or unsafe. This work focuses on proving the importance of Soil Structure Interaction for framed structure and computational modeling of ground-structure interaction using Finite Element Method.