Comparison of Seismic Performance of RC building with Infill wall of Soft Storey, Bare frame & Infill walls without Soft Storey using Staad-Pro

In order to accommodate parking needs, open ground-story structures have become a highly popular feature in multistorey projects in urban India. Even though the vulnerability of these structures to earthquake shaking was discovered during previous earthquakes, their construction is still frequently practised. Due to the lack of infills in the open ground floor, these buildings have inconsistent stiffness. Due to the larger stresses being concentrated at the ground story columns as a result of the abrupt loss in stiffness, the structure fails. The primary goal of this research is to examine the impact of applying a soft tale to a structure. In order to create and examine these three separate G+4 RC building models, Staad Pro software is used.In the analysis, the infill walls’ contribution to stiffness is taken into account by modelling them as identical diagonal struts with pins on both ends. In terms of seismic reactions like modal displacement, bending moment, lateral displacement, etc., the behaviour of soft story buildings is contrasted with a fully infilled frame building. The first story columns of fully infilled frame buildings were compared to the first story columns of open soft-storied buildings in terms of axial, shear, bending moment, and torsional moment forces. Additionally, the modification in seismic responses from zone IV is assessed. According to the aforementioned study, soft story introduction during an earthquake shaking is dangerous.