Influence of Aspect Ratio on Seismic Performance of Tall Building Frames

Seismic performance of a building depends on many factors such as loading, loading type, its plan configuration, sectional properties, aspect ratio, seismic zone, etc. In this paper we consider the behaviour of building model on altering its aspect ratio (horizontal (L/B) and vertical (H/B) aspect ratio) by increasing number of bays and number of stories keeping other factors similar in each model. In total we studied nine models for different combination of horizontal aspect ratio 1, 4, 6 and vertical aspect ratio 1, 4, 6. And eventually we compared seismic performance on the basis of certain seismic parameter like base shear, max storey overturning moment, top storey displacements, storey drifts in x and y direction respectively as per IS 1893-2002 for the seismic zone 3 (Jabalpur). The models are analysed for different load combinations linear static and linear elastic dynamic analysis (Response spectrum analysis) with the help of software Etabs-2016.