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Comparative Study of Seismic Performance of a Multi-Storey Building with Prismatic and Non-Prismatic Beam
Abstract
In general, it is observed that during earthquakes most of the buildings fail due to the failure of beam-column joints. To increase the integrity between beam and column a haunch (brace) can be provided at the junction. The main disadvantage of the prismatic beam frame is that these are as strong as there joints are weak, no matter how strong it is held with the ground or how strong is beam or column, it will fail as its joint get cracked. In this paper results from the analytical study of various parameters like modal time period, base shear, maximum storey displacement, storey drift and stiffness of three multi-storey building models are compared. All three models are having the same factors but relative haunch depth (γ) varying. By keeping maximum haunch depth (hmax) constant depth of middle prismatic section (ho) is varying. From the results, it can be noticed that the Non-prismatic beam frame model with greater ho is having better performance under earthquake loading.
References
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