Title:
Experimental Study on Seismic Behavior of Concrete Columns Reinforced with Glass Fiber-Reinforced Polymer Bars
Author(s):
W. M. Souza, J. R. Correia, J. P. Firmo, J. Almeida, I. C. Rosa, and A. A. Correia
Publication:
Structural Journal
Volume:
121
Issue:
4
Appears on pages(s):
131-148
Keywords:
axial load level; concrete columns; confinement; cyclic loading; energy dissipation; experimental study; glass fiber-reinforced polymer (GFRP) reinforcement; GFRP ties; seismic behavior
DOI:
10.14359/51740714
Date:
7/1/2024
Abstract:
This paper presents an experimental study of the seismic behavior
of concrete columns reinforced with glass fiber-reinforced polymer
(GFRP) bars. Seven full-scale square columns were tested under
sustained compressive axial loading combined with monotonic or
cyclic lateral loading. The test program included two types of reinforcement
(GFRP and steel bars) and different axial load levels (0,
20, and 33% of the axial capacity). The experiments showed that
GFRP reinforcement could be used in concrete columns subjected
to lateral loads, provided that ties are capable of properly
confining the concrete core up to failure, thereby contributing to
improving their deformation and energy dissipation capacity. Tests
also confirmed the influence of the axial load level on the loadbearing capacity, deformation, and energy dissipation capacity of GFRP-reinforced concrete columns.
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