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A STUDY ON EFFECT OF STRENGTH ASSIGNMENT TO THE COLUMNS TO MINIMIZE THE TORSION IN ASYMMETRIC BUILDING
Mr. Mohd Khadeer1, Mr. MUHAMMED MASIHUDDIN SIDDIQUI2

Published in: Journal for Advance Research in Applied Sciences
Volume- 4, Issue-5, pp.129-139, Jan 2014
DPI :-> 16.10089.JARAS.2014.V4I5.129139.2096



Abstract
In the present study asymmetric buildings with four and ten stories are taken for the analysis. These building models are analyzed for gravity and seismic forces using ETABS[1] software. Three models with different column sizes were considered to show its effect on torsion in the non linear analysis of the buildings. Strength parameters for non-linear response were also studied to obtain the optimum positions of the centres. It was found that when the strength re-distribution is performed the centre of mass is in between the centre of strength and centre of rigidity, thereby with significant reduction in base torsion. When the position of center of mass is at the middle of the center of rigidity and center of strength, the base torsion was decreased by 3.5% and 10.5% in model 2 and model 3 respectively when compared to the model 1 for a four storey model similarly for a ten storey model the base torsion was found to be decreased by 9% and 38% in model 2 and model 3 when compared to the model 1. When the strength re-distribution is performed, as the centre of mass is in between the centre of strength and centre of rigidity, the base torsion was found to be considerably decreased by 26% and 35% for model four and ten storey respectively. Therefore, the work shows that the strength eccentricity and position of centre of strength are significant parameters in judging the non-linear response of the structure with respect to base torsion.

Key-Words / Index Term
Asymmetric building, Strength distribution, Strength and Stiffness eccentricity and Base torsion.

How to cite this article
Mr. Mohd Khadeer1, Mr. MUHAMMED MASIHUDDIN SIDDIQUI2 , “A STUDY ON EFFECT OF STRENGTH ASSIGNMENT TO THE COLUMNS TO MINIMIZE THE TORSION IN ASYMMETRIC BUILDING”, Journal for Advance Research in Applied Sciences, 4, Issue-5, pp.129-139, Jan 2014. DPI:16.10089.JARAS.V4.I5.2096