Study the Progressive Collapse Behavior of RC Structure under Seismic Loading

The progressive collapse terminology defines as “initial spread of local failure from element to element, results eventually in the collapse of a disproportionately large part of it or collapse of entire structure�. Causes of progressive collapse in the building refocus and researches have been started after the event of 11 September 2001. Damage caused due to unexpected impact, fires, earthquake, explosions, design or construction, overload due to occupant misuses etc in multi-storey building are susceptible. The present study involves 15 storey’s building with floor height of 3m; with rectangular grid containing 5 bays of 4.75m in X direction and 4 bays of 4m in Y direction is modeled using E-TABS v13. The analysis is performed using linear static method. The structure is examining two cases of removal of column at various storeys at different location as suggested by General Services Administration. Bending moment of beams and axial force in columns are the main factors considered in the study. The purpose of this work is to study the behavior of variation in bending moment of beam and axial force in column at different storeys for seismic zone V and medium soil is evaluated for column removal cases.