EFFECT OF INFILL STIFFNESS ON SEISMIC PERFORMANCE OF MOMENT RESISTING RC STRUCTURE

The study investigates the overall seismic performance of the building due to different types of brick infill by linear time history analysis under the selected earthquake ground motion. The parametric study includes ground motion, strength of the infill walls expressed in terms of different types of bricks like AAC bricks, clay bricks and fly ash bricks. The results output are presented in terms of roof displacement, inter story drift, story shear of the structure. For different types of infilled structure, the analysis indicates that the stiffness of the infill structure increases as the compressive strength of the bricks increases. Further the analysis has shown that Autoclaved Aerated Concrete (AAC) blocks has more advantage than other bricks as it is light in weight, low strength, low stiffness and has high energy dissipation capacity. So it improves the overall seismic performance of in filled frames.