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     Research Journal of Applied Sciences, Engineering and Technology


Numerical Modelling of Retrofitted Reinforced Concrete Building Frames

1J.O. Afolayan, 2O.E. Babalola, 3P.O. Awoyera, 4A.W. Adekeye and 5F.A. Ishola
1Department of Civil Engineering, Federal University of Technology, Akure,Nigeria
2Department of Civil Engineering,Afe Babalola University, Ekiti,Nigeria
3Department of Civil Engineering, Covenant University, Ota,Nigeria
4Department of Civil Engineering, Federal Polytechnic, Offa,Nigeria
5Department of Mechanical Engineering, Covenant University, Ota, Nigeria
Research Journal of Applied Sciences, Engineering and Technology  2016  2:206-213
http://dx.doi.org/10.19026/rjaset.12.2322  |  © The Author(s) 2016
Received: June ‎24, ‎2015  |  Accepted: August ‎2, ‎2015  |  Published: January 20, 2016

Abstract

This study presents an overview and investigates the adequacy of the retrofit concept used in the reinforced concrete building frame of a distressed office building complex. The retrofit assessed consists of steel members welded together to form a steel frame with a reinforced concrete beam as base, acting as support for two floor slabs and roof truss of the building. Reinforced concrete building frame with and without retrofit steel frames were analysed using STAAD Pro structural analysis software and the results were compared with recommended standards from relevant codes of practice. Criteria considered include moments, shear forces and displacements/deflections. Results obtained revealed that the retrofit concept meets up with all the recommended standards. The efficiency of the retrofit used was determined in order to evaluate the extent by which the retrofit affects deflection of the beams. For all critical sections, the efficiency of the adopted retrofit concept varied significantly between 49.1-63.2%, 48.3-85.34% and 45.3-90.9%, respectively when deflection serviceability limit state, bending moment and shear force was considered respectively.

Keywords:

Building collapse, modelling, reinforced concrete, retrofitting, STAAD Pro , steel,


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Competing interests

The authors have no competing interests.

Open Access Policy

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Copyright

The authors have no competing interests.

ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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