Effect of Seismic Retrofitting on R.C. Building with Soft Storey and Floating Column

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2017 by IJETT Journal
Volume-46 Number-7
Year of Publication : 2017
Authors : Rahul Kapase, Mukund Pawar, M.M. Deshmukh, S.B.Talavara
DOI :  10.14445/22315381/IJETT-V46P262


Rahul Kapase, Mukund Pawar, M.M. Deshmukh, S.B.Talavara "Effect of Seismic Retrofitting on R.C. Building with Soft Storey and Floating Column", International Journal of Engineering Trends and Technology (IJETT), V46(7),367-371 April 2017. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

The objective of this study is to identify an efficient retrofitting method for existing open ground story reinforced concrete frame buildings. This soft storey creates a major weak point in an earthquake. Since soft stories are classically associated with retail spaces and parking garages, they are often on the lower stories of a building, which means that when they collapse, they can take the whole building down with them, causing serious structural damage which may render the structure totally unusable. we are dealing with the comparative study of seismic analysis of multi-storied building with and without floating columns. The analysis is done with Response Spectrum Analysis, as per IS:1893-2002. Various features of lateral stiffness strengthening system, namely lateral bracings, shear walls, increasing the column size in the soft ground storey. the entire project is done with ETABS 3D model and the comparison of these models are been presented with their combinations, and are proposed to reduce the stiffness irregularity and discontinuity in the load path incorporated by the soft ground storey and the floating columns respectively. The results are plotted for both the frames with and without floating column by comparing each other in terms of Story shear, story displacement, story drift and time period.


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soft storey, floating columns, bracings, shear walls, ETABS.