PERFORMANCE OF DIFFERENT TYPES OF BUILDINGS IN SEISMIC ZONES OF INDIA

Abstract

Nonlinear analysis is mostly used for the predicting accurate result in case of moderate to extreme earthquake conditions. In this report, Seismic analysis of a building, located in different zones, is done to predict the behaviour with infill wall, bracing and shear wall. The building is located in different Indian zones from zone II to zone V and they are all identical in geometric properties. Evaluation is being carried out using Etabs. The performance and capacity of nine storeyed building model under seismic loading in all zones, is evaluated in medium stiff soil. The load displacement relationship, formation of sequential hinges, and the inelastic response of the structure are being evaluated. The actual behaviour of the structure out by the plastic hinge formation. Analysis shows that when zone changes from II to V, the time period, displacement and base shear increases gradually which indicates the sternness of the seismic activity. The first hinges were seen in beams and then in columns at the lower floor portions. It then finally goes from ground floors to middle floor and then to the upper floor columns. The hinge propagation from ground storey to upper stories leads to structure collapse. This analysis gives an estimate that higher magnitude seismic loading can cause damage much beyond the elastic limit and ultimately lead to failure of the structural frame model. Conclusion is that destruction is limited in a building and after analysing the structure the suitable retrofitting measures can be adopted based on the requirement of building.