Comparative Study on Dynamic Behaviour of RC Building With Conventional and Flat Slab
Earthquake causes massive destruction to all the infrastructure facilities such as buildings, power lines and airport terminals. The extent of damage depends on the associated energy, magnitude and epicenter distance. The effects of earthquakes are responsible for ground shakings which in turn shakes the structure, liquefaction in which subsoil losses its strength. During earthquakes, the ground experiences high accelerations resulting in back and forth moment of the structure. Unless the structures are designed and constructed to withstand seismic forces, the failure cannot be avoided. Building can be made seismically sound with proper structure design, detailing and construction practice. The performance depends on how the real-life conditions like material properties and ground motion data are accurately simulated. Flat slab is a reinforced slab built monolithically with the supporting column without provision of beams. Configuration of a building is very much important for seismic performance of buildings. The important aspects that affect seismic configuration of a building are overall geometry and structural system. This parameter varies in their behaviour in flat slab and conventional slab. In the present study, G + 6 multi-storey RC-frame structure is considered for the analysis. Typical storey height of building is 3.2 m. To study the dynamic behaviour of RC frame structure with conventional slab system and flat slab system, two models have been prepared in ETABS software and response spectrum analysis has been performed.
KeywordsConventional slab Flat slab Response spectrum analysis ETABS
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