TY - GEN
T1 - Theoretical Prediction of Axial Response of FRP Fully/partially Confined Circular Concrete Under Axial Loading
AU - Shayanfar, Javad
AU - Rezazadeh, Mohammadali
AU - Barros, Joaquim A.
N1 - Funding Information: The study reported in this paper is part of the project StreColesf_Innovative technique using effectively composite materials for the strengthening of rectangular cross section reinforced concrete columns exposed to seismic loadings and fire?, with the reference POCI-01-0145-FEDER-029485. The first author also acknowledges the support provided by FCT PhD individual fellowship 2019 with the reference of SFRH/BD/148002/2019.
PY - 2022
Y1 - 2022
N2 - The present study is dedicated to develop a new axial stress-strain model for FRP-based confinement strategies in case of FRP fully/partially confined circular concrete columns under axial compressive loading. For calculating axial stress versus axial strain curve, a new formulation as a function of concrete dilation response was suggested based on a large database of test results of FRP confined concrete. A new methodology was also developed to predict the ultimate condition of partially FRP confined concrete to take into account the possibility of concrete crushing failure mode. To evaluate the reliability and predictive performance of the developed model, it was compared with experimental data available in the literature. The results showed that it is sufficiently capable of predicting the experimental counterparts with the reasonable precision in the design content. This model can be adopted not only for fully confined concrete, but also in case of partial confinement system, demonstrating its wide applicability.
AB - The present study is dedicated to develop a new axial stress-strain model for FRP-based confinement strategies in case of FRP fully/partially confined circular concrete columns under axial compressive loading. For calculating axial stress versus axial strain curve, a new formulation as a function of concrete dilation response was suggested based on a large database of test results of FRP confined concrete. A new methodology was also developed to predict the ultimate condition of partially FRP confined concrete to take into account the possibility of concrete crushing failure mode. To evaluate the reliability and predictive performance of the developed model, it was compared with experimental data available in the literature. The results showed that it is sufficiently capable of predicting the experimental counterparts with the reasonable precision in the design content. This model can be adopted not only for fully confined concrete, but also in case of partial confinement system, demonstrating its wide applicability.
KW - Axial behavior
KW - Concrete dilation
KW - FRP confined concrete
KW - Partial confinement
UR - http://www.scopus.com/inward/record.url?scp=85121909267&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-88166-5_125
DO - 10.1007/978-3-030-88166-5_125
M3 - Conference contribution
AN - SCOPUS:85121909267
SN - 9783030881658
T3 - Lecture Notes in Civil Engineering
SP - 1439
EP - 1449
BT - 10th International Conference on FRP Composites in Civil Engineering - Proceedings of CICE 2020/2021
A2 - Ilki, Alper
A2 - Ispir, Medine
A2 - Inci, Pinar
PB - Springer
T2 - 10th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2021
Y2 - 8 December 2021 through 10 December 2021
ER -