Finite-Element Analysis of Wall-Like RC Columns Strengthened with FRP and TRM Jackets under Concentric and Eccentric Loadings
Publication: Practice Periodical on Structural Design and Construction
Volume 28, Issue 1
Abstract
The present paper shows the results of nonlinear finite-element analysis (FEA) of fiber-reinforced polymer (FRP) and textile-reinforced mortar (TRM) confined reinforced concrete (RC) wall-like columns under concentric and eccentric axial loads. The FEA column models were validated with an experimental study in the literature. A parametric study was performed on the validated models to examine the effectiveness of FRP versus TRM considering various columns’ cross section aspect ratios, number of layers, and eccentricities. In addition, interaction diagrams were constructed for the control and strengthened columns. Good agreement was achieved between the experimental and validated FEA results. The parametric study results showed that, as compared to TRM, FRP jackets were more effective in terms of axial strength improvement. This effectiveness was less pronounced in columns with higher aspect ratios. Furthermore, the effectiveness of both systems was distinct when three layers were applied with 45% and 39% enhancements in the axial strength as compared to the control model, respectively. Furthermore, the axial strength of all columns reduced with higher eccentricity values. As the eccentricity increased, the axial capacity of the models strengthened with FRP converged with the control ones. In general, the TRM-confined model’s interaction diagram was superior to that of its FRP-confined counterparts.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
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Information & Authors
Information
Published In
Practice Periodical on Structural Design and Construction
Volume 28 • Issue 1 • February 2023
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Jun 15, 2022
Accepted: Sep 30, 2022
Published online: Nov 28, 2022
Published in print: Feb 1, 2023
Discussion open until: Apr 28, 2023
ASCE Technical Topics:
- Building materials
- Columns
- Concrete
- Concrete columns
- Engineering fundamentals
- Engineering materials (by type)
- Fiber reinforced polymer
- Finite element method
- Materials engineering
- Methodology (by type)
- Mortars
- Numerical methods
- Polymer
- Reinforced concrete
- Structural behavior
- Structural engineering
- Structural members
- Structural strength
- Structural systems
- Synthetic materials
- Walls
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