STUDIES IN RETROFITTING OF TYPICAL RC FRAMED BUILDING WITH THE HELP OF BRACING

In present world many existing reinforced concrete structures are inadequate for taking seismic loads. Many existing reinforced concrete buildings needs to retrofit to overcome the deficiencies to resist seismic loads. During the late decade have indicated that Recent earthquakes which occurred, major damage occurred was not directly due to actions of earthquakes but due to poor performance of structures during earthquakes. Many existing reinforced concrete buildings need to retrofit to overcome the deficiencies to resist seismic loads. It is recognized that the most effective method of reducing the risk of damaging structure is seismic retrofitting. Steel braced frame is one of the structural systems used to retrofit multi-storeyed buildings. The use of steel bracing systems for strengthening or retrofitting seismically inadequate reinforced concrete building is abest solution for enhancing earthquake resistance. A G+6 storey building is analysed for seismic zone IV as per IS 1893(Part 1):2002 using ETABS 2017 software in the present study. The bracing is provided for peripheral columns. The building is analysed for models with X type bracing and compared with un-braced structure.