TY - JOUR
T1 - Cross‐sectional and confining system unification on peak compressive strength of FRP confined concrete
AU - Shayanfar, Javad
AU - Barros, Joaquim A.O.
AU - Rezazadeh, Mohammadali
N1 - Funding information: This study is a part of the project “Sticker –Innovative technique for the structural strengthening based on using CFRP laminates with multifunctional attributes and applied with advanced cement adhesives,” with the reference POCI‐01‐0247‐FEDER‐039755.” The first author also acknowledges the support provided by FCT PhD individual fellowship 2019 with the reference of “SFRH/BD/148002/2019.”
PY - 2023/2/1
Y1 - 2023/2/1
N2 - Despite the many axial confinement models already proposed for the determination of the peak compressive strength of fiber-reinforced polymer (FRP) confined concrete columns, they are, in general, applicable only to concrete columns of circular or square cross-section, with full or partial confinement arrangements. In this study, by proposing a cross-sectional and confining system unification approach, a new model is developed and calibrated based on a large test database. For the generalization of the cross-section and FRP-based confinement arrangement, the concept of confinement efficiency factor with a unified mathematical framework is adopted. By simulating experimental tests and comparing to the predictions of existing confinement models, the developed one demonstrates a very high reliability and suitable for design purposes by balancing the simplicity of the usage and accuracy.
AB - Despite the many axial confinement models already proposed for the determination of the peak compressive strength of fiber-reinforced polymer (FRP) confined concrete columns, they are, in general, applicable only to concrete columns of circular or square cross-section, with full or partial confinement arrangements. In this study, by proposing a cross-sectional and confining system unification approach, a new model is developed and calibrated based on a large test database. For the generalization of the cross-section and FRP-based confinement arrangement, the concept of confinement efficiency factor with a unified mathematical framework is adopted. By simulating experimental tests and comparing to the predictions of existing confinement models, the developed one demonstrates a very high reliability and suitable for design purposes by balancing the simplicity of the usage and accuracy.
KW - FRP-confined concrete
KW - partial confinement
KW - peak compressive strength
KW - square cross-section
KW - unified model
UR - https://www.scopus.com/pages/publications/85141432466
U2 - 10.1002/suco.202200105
DO - 10.1002/suco.202200105
M3 - Article
SN - 1464-4177
VL - 24
SP - 1531
EP - 1545
JO - Structural Concrete
JF - Structural Concrete
IS - 1
ER -