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Structural response of RC frame under seismic loading by varying inclination angle of cross bracing

Structural response of RC frame under seismic loading by varying inclination angle of cross bracing Structural performance is greatly affected by the use of concrete bracing in high seismic zone areas. A study representing the structural performance of a five-storey RC braced frame structure, by varying the inclination angle of concrete bracing, has been carried out by the use of numerical ling for an earthquake load relating to a PGA value of up to 0.24 g. To investigate the problem, hypothetical s have been generated and analysed in SAP 2000 software using 3D ling. Three s with different angle of bracing (i.e., < 45 degree, 45 degree and > 45 degree) are studied and compared with frame structure. Design considerations as per `UBC-97' and `BCP-2007' were used and response spectrum analysis has been carried out to observe the structural behaviour under dynamic loading. The parameters considered in this study are lateral displacements, inter-storey drifts, time period, base shear forces and axial forces and bending moments in ground floor columns. It has been concluded that the bracing angle affects the overall performance of structure. RC braced frame with bracing angle less than 45 degree gives better seismic performance in terms of lateral drift and forces in structural members. Keywords: concrete bracings; linear dynamic analysis; http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Structural Engineering Inderscience Publishers

Structural response of RC frame under seismic loading by varying inclination angle of cross bracing

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Publisher
Inderscience Publishers
Copyright
Copyright © 2016 Inderscience Enterprises Ltd.
ISSN
1758-7328
eISSN
1758-7336
DOI
10.1504/IJSTRUCTE.2016.076694
Publisher site
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Abstract

Structural performance is greatly affected by the use of concrete bracing in high seismic zone areas. A study representing the structural performance of a five-storey RC braced frame structure, by varying the inclination angle of concrete bracing, has been carried out by the use of numerical ling for an earthquake load relating to a PGA value of up to 0.24 g. To investigate the problem, hypothetical s have been generated and analysed in SAP 2000 software using 3D ling. Three s with different angle of bracing (i.e., < 45 degree, 45 degree and > 45 degree) are studied and compared with frame structure. Design considerations as per `UBC-97' and `BCP-2007' were used and response spectrum analysis has been carried out to observe the structural behaviour under dynamic loading. The parameters considered in this study are lateral displacements, inter-storey drifts, time period, base shear forces and axial forces and bending moments in ground floor columns. It has been concluded that the bracing angle affects the overall performance of structure. RC braced frame with bracing angle less than 45 degree gives better seismic performance in terms of lateral drift and forces in structural members. Keywords: concrete bracings; linear dynamic analysis;

Journal

International Journal of Structural Engineering – Inderscience Publishers

Published: Jan 1, 2016

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