Experimental and analytical investigations of rectangular RC columns retrofitted by FRP under axial and cyclic loads

Shaaban, Ibrahim (2008) Experimental and analytical investigations of rectangular RC columns retrofitted by FRP under axial and cyclic loads. In: 7th International Congress, Concrete, Constructions' Sustainable Option, 8-10 July 2008, Dundee, Scotland.

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Abstract

Application of fiber reinforced polymers, (FRP), is effective in strengthening circular and square reinforced concrete, (RC), columns. The efficiency of using FRP is considerably reduced when wrapping rectangular columns. Experimental and theoretical investigations are carried out to study the behavior of RC rectangular columns wrapped with FRP sheets under cyclic lateral and axial loading. Eleven RC rectangular columns strengthened by FRP wraps were tested under both cyclic lateral and axial loading. The main parameters investigated in this research were volumetric ratio of FRP, spacing between FRP layers, axial load level, type of FRP sheets, anchorage system of FRP and aspect ratio of columns. Finite element analysis was carried out to predict the response of the tested columns. In addition, a simplified approach, based on a developed numerical computer program, for predicting the curvature ductility factor of FRP retrofitted columns subjected to cyclic loading is reported. The approach was validated by comparing its results with those obtained experimentally. It is concluded that behavior of rectangular columns subjected to cyclic lateral load is significantly enhanced when wrapped with FRP. The proposed approach can be used to predict both the ductility and strength of FRP wrapped rectangular columns.

Item Type: Conference or Workshop Item (Paper)
Subjects: Construction and engineering > Civil and structural engineering
Related URLs:
Depositing User: Ibrahim Shaaban
Date Deposited: 16 May 2020 12:37
Last Modified: 16 May 2020 14:55
URI: http://repository.uwl.ac.uk/id/eprint/6973

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