Effect of Infill Masonry Wall on Seismic Performance of R.C. Building

Abstract

Reinforced concrete frames with masonry infill walls are widely used systems as an internal partition and external walls in many parts of the world. The infill walls are used for mainly partition and insulation purposes rather than structural purposes and usually not considered as structural elements in structural design. However, during earthquakes, these infills contribute to the response of the structure and the behavior of infilled frame buildings is different from that predicted for bare frame structures. For this purpose, models of (G+5) and (G+9) RC framed building assumed to be located in Seismic zone-IV have been considered. Masonry walls stiffness is included in the models by converting them into equivalent diagonal strut according to IS 1893:2016 CL 7.9.2.2. Linear Dynamic analysis (Response Spectrum Analysis) has been performed as per IS: 1893:2016. The results are compared for the parameters like natural period, storey shear, storey drift, displacement among the models considered.