Abstract
This paper presents a numerical model for the cyclic/seismic behavior of reinforced concrete (RC) columns retrofitted with fiber-reinforced polymer (FRP) confining jackets. Such a column model has previously been unavailable despite the popularity of FRP jacketing as a seismic retrofit method for RC columns. The proposed numerical column model is based on a recent stress-strain model for FRP-confined concrete subjected to cyclic axial compression and a hysteretic moment-rotation model to account for the effect of strain penetration of the longitudinal steel bars in the column footing (i.e., effect of fixed-end rotations). This column model was implemented into OpenSees (Open System for Earthquake Engineering Simulation) using its fiber-section force-based nonlinear beam-column element. Predictions of the numerical column model for three FRP-jacketed RC columns subjected to either double-curvature bending or single-curvature bending are shown to be in close agreement with the test results.
Original language | English |
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Article number | 04015021 |
Journal | Journal of Composites for Construction |
Volume | 20 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Feb 2016 |
Keywords
- Columns
- Confinement
- Cyclic loading
- Fiber-reinforced polymer (FRP)
- Numerical modeling
- OpenSees
- Reinforced concrete
- Seismic loading
- Seismic retrofit
ASJC Scopus subject areas
- Ceramics and Composites
- Civil and Structural Engineering
- Building and Construction
- Mechanics of Materials
- Mechanical Engineering