SEISMIC PERFORMANCE OF PLAN IRREGULAR RC-FRAMED BUILDINGS WITH SOFT STOREY

Abstract

In building, Vertical irregularities are very common feature in urban area, vertical irregular buildings are available in large number in modern urban infrastructures. In Multi-story building comes Soft storey building in which one storey is kept open for the purpose of vehicle parking, shops, commercial purposes etc. This project work done for the study of seismic performance of plan irregular rc-framed buildings with soft storey seismic response at different level.

The study followed the modeling of a G+5 storied irregular RC building with soft storey. The drawing and elevation of building is created in AutoCAD 2016 and then imported in STAAD.Pro V8i for analysis and Design using IS codes. In this study collected displacement, stress and base shear have been carried out using equivalent static analysis to investigate the influence of these parameter on the seismic behaviour of buildings with soft storey. For the selected building, analysed 2 cases A case for irregularity and B case for soft storey. Irregularity building have 2 cases, first case has number of column 25 NOS and second case have number of column 26 NOS. 25 and 26 columns have same cross section area.

After these analysis and design, compared max bending moment, max. shear force, concrete and steel area for all cases.