Static and Dynamic Analysis of Multi-Storey Building with the Effect of Ground and Intermediate Soft Storey Having Floating Columns

Generally the building is subjected to seismic loads the infill masonry wall are considered as nonstructural elements and their stiffness contribution are ignored during the analysis. RC frame building with open ground storey is called as soft storey, similarly soft storey effect can be observed when soft storey at different level of the structure are constructed. In recent earthquake it is observed that a building with discontinuous in stiffness and mass subjected to concentration of forces and the point of discontinuity which may leads to failure of members at the junction and collapse of building. One of the most economical ways to eliminate failure of soft storey is by adding shear walls to tall buildings. In this the study of 3D analytical model of fifteen storey building has been created. Eleven different building models (15 storey each). Analysis is carried out by “ETABS� software. The analytical model of the building include all important component that influence the strength, stiffness ,mass, and deformability of the structure. It is an attempt to study the performance of a building with open ground storey along with an intermediate soft storey with floating columns, type of shear wall in seismic porn areas. Fundamental time period, base shear, storey displacement, storey drift is calculated by equivalent static analysis (ESA) & response spectrum analysis (RSA) method and compared for all models.