Review of confining non-circular concrete column with FRP using modified cross section methods
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Date
2016
Authors
AL Gemeel, A.N.
Zhuge, Y.
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Conference paper
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Proceedings of the 8th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2016, 2016, pp.233-238
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8th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2016 (14 Dec 2016 - 16 Dec 2016 : Hong Kong, China)
Abstract
Fiber Reinforced Polymer (FRP) can be used as an excellent material for structural retrofitting to against seismic or impact loads and has been applied widely in the past 20 years to confine reinforced concrete column. Due to concentrated stress at the corners of square or rectangular columns which significantly influences FRP confinement, various modification methods which modifying the column cross sections have been investigated recently. This paper aims to provide an overview of the recent investigations on confining concrete columns with non-circular cross section using various modified cross section methods. The characteristic of FRP in confining existing columns in bridges and buildings was summarized first in the paper, followed by the assessment of performance of circular and non-circular columns confined by FRP. Investigations on modifying column cross section from square or rectangular to circular or elliptical sections before being wrapped with FRP layers using different techniques are reviewed in details. The review revealed that modifying the column cross section using grouting material with prefabricated FRP is an effective way to reach desired effectiveness of FRP confinement in strengthening existing columns. Copyright
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Copyright 2016 Department of Civil and Environmental Engineering & Research Institute for Sustainable Urban Development, The Hong Kong Polytechnic University.