Indian Journal of Science and Technology

Abstract

Objectives: This work aims to control the storey drift and lateral deflection by simple implementation of changed column orientations so as to increase the resistance of the building against lateral loads. Methods: The columns at first taken is of square section and is gradually changed to rectangular cross-sections keeping the length along Z-axis and breadth along X-axis. The total horizontal deflection and the maximum storey drifts are considered along both X and Z axes. The percentage of steel used is also calculated so as to determine the safest economical column sections. The analysis is carried out using STAAD Pro V8i software. Findings: With change of column sections control in storey drifts and lateral deflection is achieved to a varying degree without the use of any shear walls or other earthquake resisting mechanisms. Square sections give more stability and rectangular sections results in more economic sections. The findings conform to the general rule of changing stiffness of a body along a specific axis by changing its orientation. By using this method of control of lateral deflection and storey drift it will be possible to have more optimised analysis of tall structures. Application: This method can be very helpful for low budget residential high-rise buildings lacking any another resistant mechanisms.
Keywords: Earthquake Load, Lateral Deflection, Storey Drift, Wind Load