Effect of Soil Structure Interaction for Framed Structure Resting on Multilayered Soil Mass

In conventional model of the frame structure, the effect of Soil Structure Interaction is neglected considering the support conditions as fixed or pinned. But in order to understand the actual behavior of structure resting on existing soil mass, the effects of Soil Structure Interaction must be taken into consideration. Thus in this paper space frame and multilayered soil mass system is analyzed for gravity load conditions using Finite Element Method with Ansys 11.0 as analysis tool. Also assumed space frame is consisting of columns of different orientation and beams of same sizes. Thus model under consideration is analyses for Non Interaction Analysis (NIA), Interaction Analysis considering soil mass as Elastic (IAE) and Interaction Analysis considering soil mass as Elasto-Plastic (IAEP). The results are correlated for Vertical Displacement and Stresses in Structure due to flexible soil condition. After analyzing, the model for different conditions of SSI effect, it was found that SSI must be taken into consideration while analyzing framed structure.