EFFECT OF LATERAL QUASI-STATIC LOAD ON NONLINEAR BEHAVIOUR AND DAMAGE INDEXES OF RETROFITTED RC FRAME MODEL

Existing reinforced concrete buildings in north India were built at times when seismic zones were not recognized. These buildings need to monitor the damage and improve their load carrying capacities for the purpose of seismic safety. This paper investigates the effect of lateral load on the damage index of reinforced concrete frame model strengthened using FRP sheets. Stiffness damage index and combined damage parameters approach were used. Change in modal parameters methods were investigated with the help of impact hammer excitation test. Finally, finite element method was used for modelling, nonlinear analysis and results processing of the specimen.