Soil-Structure Interaction of RC Building for Different Types of Soils Considering the Mohr–Coulomb Soil Model

Soil-structure interaction plays a significant role in the design of the structure. The coupling effect between the structure and soil media is termed as soil-structure interaction. Conventional design practice needs to modify based on the soil-structure interaction effect and must be included in the standards of regular design practices. The study is specifically focused on the soil-structure interaction of the G + 3 building for three different types of soil, i.e. hard soil, medium soil, and soft soil considering the Mohr–Coulomb soil model using finite element-based software ANSYS. The effect of soil-structure interaction is observed on the vertical reaction, horizontal reaction, and bending moment at the footing base considering the Mohr–Coulomb soil models. The parameters are observed at the corner, edge, and central footing of the building. To observe the effect of soil-structure interaction, flexible base model is compared with fixed base model. The effect of the SSI increases as the soil changes from hard to soft soil. The variation of parameter with location of the footing is studied, which shows the vertical reaction at central footing shifts towards outer footings, i.e. edge and corner footings, while the central footing shows a greater intensity of horizontal reaction and bending moment compared to edge and corner footings.