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Paper Title : Structural Analysis of a Retrofitting of Reinforced Concrete Frames Using Steel Bracings

ISSN : 2395-1303
Year of Publication : 2021
10.29126/23951303/IJET-V7I6P12

Authors: Thirumalai. R, Prasanth. M.N

         


Abstract
Earthquake is one of major natural disaster in which many structures damage and collapse due to unacceptable or improper design against seismic motion. The government and some other NGOs are also working in the field to create awareness for the seismic designing of new construction building especially in seismic susceptible areas but they are not considering the seismic resistance of the old buildings as it should be considered. The main objective of this project is to protect the new as well as the old buildings by designing it as earthquake resistant structure. Retrofitting is the procedure of improvement that enables the old structure to resist the force of consideration where Seismic Retrofitting is the improvement over the old structures that enables the structure to resist seismic action. The concept used in this project is base isolation. Steel braced frame is one of the structural systems used to resist earthquake loads in multi-storied buildings. Many existing reinforced concrete buildings need to retrofit to overcome the deficiencies to resist seismic loads. The use of steel bracing systems for strengthening or retrofitting seismically inadequate reinforced concrete frames is a viable solution for enhancing earthquake resistance. Bracing system reduces bending moments and shear forces in the columns. The bracing is provided for peripheral columns. An existing multistorey building is analyzed for seismic zone III as per IS 1893-2002 using ETABS 2015 Software

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Keywords
-Earthquake Strengthening, Retrofitting, Steel Braced RC Structures, Seismic Performances, Analysis.