Seismic performance improvement of GFRP-RC moment frames

Author:

Ghomi Shervin K.11,El-Salakawy Ehab11

Affiliation:

1. Department of Civil Engineering, University of Manitoba, Winnipeg, Manitoba, Canada.

Abstract

Although structures made of concrete reinforced with fiber-reinforced polymers (FRP) have shown promising performance under gravity loads, their performance under cyclic loading is still one of the main concerns. Although the linear nature of FRP reinforcement could be advantageous in terms of limiting the residual damage after an earthquake event, it lowers the energy dissipation of the structure, which can compromise its seismic performance. In this research, adding steel plates at selected locations in moment-resisting frames is proposed as a solution to improve seismic performance of FRP-reinforced concrete (FRP-RC) structures. Three full-scale cantilever beams, one steel-RC, one FRP-RC, and one FRP-RC with proposed steel plates, were constructed and tested under reversed cyclic loading. The results indicated that the proposed mechanism effectively improves the seismic performance of FRP-RC beams by increasing their initial stiffness and energy dissipation. Moreover, a computer simulation, using the moment–curvature determination process, was conducted to calculate bending moment capacity of FRP-RC beams with steel plates.

Publisher

Canadian Science Publishing

Subject

General Environmental Science,Civil and Structural Engineering

Reference38 articles.

1. Shear strengthening of reinforced concrete beams using steel plates bonded on beam web: experiments and analysis

2. Structural Performances of Concrete Beams with Hybrid (Fiber-Reinforced Polymer-Steel) Reinforcements

3. American Concrete Institute (ACI) Committee 374. 2005. Acceptance criteria for moment frames based on structural testing and commentary (ACI 374.1-05). American Concrete Institute (ACI), Farmington Hills, Michigan.

4. External steel plate systems for the shear strengthening of reinforced concrete beams

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