Abstract: An asymmetrical R.C.Multi-storey building without infill walls (G+10) with plan irregularity, having four bays in x and y directions located in seismic zones II and III has been analysed with fixed base condition and flexible base condition. Flexible base is achieved by introducing the stiffness of the soil and further the foundation of the building is assumed to be resting on this soil, is called the Winkler’s model approach to incorporate Soil-Structure Interaction to the building. Each individual footing has been designed, depending on the load transferred from column to the footing. Design of footing is carried out based on the IS: 456-2000 code. Using the designed isolated footing parameters, the values of spring stiffness under each column has been calculated using the empirical relationship given in NIST GCR 12-917-21 for assumed values of Modulus of Elasticity and Poisson’s ratio of the soil. Equivalent static method is used in the analysis to take care of earthquake forces as per IS: 1893-2002. Results have been studied for fixed base and flexible base conditions for both the seismic zones. Conclusions are drawn from the graphs obtained from software tool, such as maximum storey displacement, maximum storey drift and overturning moments.
Keywords: R.C.Multi-storey building, Soil-Structure Interaction, Stiffness and Maximum storey displacement.
Title: Effect of Soil Structure Interaction on High Rise Building using ETABS
Author: Azra Hanna Razvi J.B., Yashaswini R.K., Arun A.C., Vinay Kumar R., Goutham D.R.
International Journal of Civil and Structural Engineering Research
ISSN 2348-7607 (Online)
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