• Abhilash Hiregouda
• Nadeem Pasha

In the analysis of framed structure the base is considered to be fixed neglecting the effect of soil and foundation flexibility. Flexibility of the soil causes the decrease in stiffness resulting increase in the natural period of the structure. Such increase in the natural periods, changes the seismic response of structure hence it may be an important issue for design considerations. The present study provides systematic guidelines for determining the natural periods of frame buildings due to the effect of soil-flexibility and identification of spring stiffnessfor different regular and irregular story buildings and various influential parameters have identified and the effect of the same on change in natural periods has to be studied. The study has carried out for building with Isolated, mat and pile foundations for different soil conditions like soft, medium and hard strata, and a comparison between the regular and irregular buildings and natures of change in the natural periods has to be present. And response spectrum analysis this study may useful for seismic design.

Soil Structure Interaction, Spring Stiffness, Soil Flexibility, Base Shear, Displacement, Period.

"STRUCTURAL INTERACTION OF FRAME WITH SOFT AND STIFF CLAY SOIL USING ANSYS SUPPORTED WITH A PILE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.467-473, June 2019, Available :http://www.jetir.org/papers/JETIR1906H46.pdf

"STRUCTURAL INTERACTION OF FRAME WITH SOFT AND STIFF CLAY SOIL USING ANSYS SUPPORTED WITH A PILE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp467-473, June 2019, Available at : http://www.jetir.org/papers/JETIR1906H46.pdf