Seismic Behavior of Circular Building with Diaphragm Discontinuity

Now a days openings in the floors is common for many reason like staircases, lightning architectural etc. These openings in diaphragms cause stresses at discontinuous joints with building elements. Discontinues diaphragms are designed without stress calculations and are thought about to be adequate ignoring any gap effects1. In this study a circular building having diaphragm irregularity is analyzed by equivalent static method (Linear static method) using ETABS. Five models are generated with different percentage of floor area openings of the circular building, and the results obtained from software after the application of seismic forces are then observed and compared. The effect of slab openings with varying percentage of floor area at the centre of circular building is investigated. The main parameters considered in this study to compare the seismic performance of different models are storey drift, base shear and storey displacement.