Lateral load tests were conducted, for four scaled-down (1 : 4) bridge piers made of low-strength concrete, with two of them having 12.4 MPa up to the damage state, and the other two having 16.5 MPa. These damaged bridge piers were then retrofitted with carbon-fibre-reinforced polymer (CFRP) wrapping in single and double layers, and tested again under the same cyclic quasi-static loading. A numerical investigation of these bridge piers was carried out, and the results of the energy dissipation are presented. The numerical results were in good agreement with the experimental results and reveal that, with increasing the number of layers of CFRP on a bridge, there is an increased amount of energy dissipation and hence ductility of the pier. The CFRP retrofitted piers not only recover their original strength, but the lateral load capacity is also increased considerably.
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June 2021
Research Article|
May 28 2020
Energy dissipation characteristics of retrofitted damaged low-strength concrete bridge pier
Qaiser uz Zaman Khan, PhD;
Qaiser uz Zaman Khan, PhD
Professor, Department of Civil Engineering, University of Engineering & Technology Taxila, Taxila, Pakistan
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Afaq Ahmad, PhD;
Afaq Ahmad, PhD
Assistant Professor,Department of Civil Engineering, University of Engineering & Technology Taxila, Taxila, Pakistan
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Saqib Mehboob, PhD;
Saqib Mehboob, PhD
Assistant Professor, Department of Civil Engineering, University of Engineering & Technology Taxila, Taxila, Pakistan
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Muhammad Iqbal, PhD
Muhammad Iqbal, PhD
Structural Expert, National Highway Authority (NHA), Islamabad, Pakistan (corresponding author: afaq.ahmad@uettaxila.edu.pk)
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Publisher: Emerald Publishing
Received:
April 06 2020
Accepted:
May 22 2020
Online ISSN: 1751-7664
Print ISSN: 1478-4637
ICE Publishing: All rights reserved
2020
Proceedings of the Institution of Civil Engineers - Bridge Engineering (2021) 174 (2): 148–156.
Article history
Received:
April 06 2020
Accepted:
May 22 2020
Citation
Khan QUZ, Ahmad A, Mehboob S, Iqbal M (2021), "Energy dissipation characteristics of retrofitted damaged low-strength concrete bridge pier". Proceedings of the Institution of Civil Engineers - Bridge Engineering, Vol. 174 No. 2 pp. 148–156, doi: https://doi.org/10.1680/jbren.20.00016
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