Journal of Building and Construction Engineering ISSN: 3107-8796 (Online)

Authors: Rudrappa Kurbet, Dr.Shaik Kabeer Ahmed,  Dr. Arun Kumar Bhat

Abstract: The effect of soil structure interaction is generally ignored in the seismic analysis of the multistory buildings. In most of the cases fixed base assumption is accepted which in general not accurate. Soil flexibility causes lengthening of the natural periods due to overall decrease in stiffness as  the  lateral  stiffness  of  the building depends on the compressibility of the soil. This leads lo a subsequent variation in the natural periods of the system which may considerably influence the seismic response of the building. Thus the effect of soil-structure interaction should be considered in buildings which are located in earthquake prone areas. Reinforced concrete frame buildings with  unreinforced  brick masonry  infill walls  are  generally  analyzed  and  designed  as  bare frames, without considering the strength and stiffness contributions  of infills.

Keywords: Soil structure interaction, Etabs, Brick masonry, nonlinear-pushoveranalysis, lateraldisplacement, Base shear, naturalperiod.