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ISSN: 2277-1891

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Research Article

Feasibility Studies on the Use of Outrigger System for RC Core Frames

Dr.K.S.Sathyanarayanan, A.Vijay, S.Balachandar

Department of Civil Engineering, SRM University, India

*Corresponding Author:
Dr.K.S.Sathyanarayanan
Department of Civil Engineering, SRM University, India
E-mail: [email protected]

Abstract

This research work is an attempt made to study the effect of provision of outriggers for single bay frame at single level and two levels for single bay of different heights 30m, 45m, and 60m. Finite element analysis has been done using standard structural software. The frame and outriggers are modeled by three degrees of freedom per node beam elements. Both symmetrical and unsymmetrical provisions of outriggers are included with the considered static loads. From the analysis the lateral displacements, internal forces, base shear values are obtained for each level of outrigger. The reduction in lateral displacement of core frame values is taken as the index of efficiency of outrigger system at a particular level. The optimum position of outrigger so as to give maximum efficiency is found out. Optimum position of single level symmetrical and unsymmetrical outrigger for 30m, 45m and 60m are at H/2, H/2.5 and H/2.85 from top. Where H is the storey height and height of the frame. 

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