Non-linear Static Pushover Analysis Of Masonry Infilled RC Frames Structure

Masonry walls are built in between reinforced concrete frame and generally considered as non-structural element.In design of building self-weight of wall is considered as uniformly distributed load on beam without considering the stiffness and strength contribution of wall.In this study the effect of masonry walls on R.C.C building is studied.Nonlinear static Pushover analysis on R.C.C building with different configuration is carried out.For the analysis reinforced concrete framed building is modeled.Infill walls are simulated in SAP2000 with strut and its dimensions are calculated from equivalent strut method.Seismic performance of various configurations of infill in reinforced concrete frames is obtained by performing nonlinear static analysis in SAP2000(Using FEMA-356 and ATC-40 guidelines).Seismic performance of various configurations of infill in reinforced concrete frames is compared with bare frame model.It is concluded that infill wall in reinforced concrete frame reduces top story displacements,increases lateral stiffness,reduce time period of structure,and increase base shear.