Parametric Study on Seismic Performance of FRP-RC Exterior Beam–Column Joints
- 1School of Civil Engineering, Tsinghua University, Beijing 100084, China
- 2Shaanxi Academy of Building Research Co., Ltd., Xi’an 710082, China
- 3School of Civil Engineering and Smart Construction, Chang’an University, Xi’an 710064, China
Abstract
A comprehensive and quantitative understanding of the seismic performance of fiber-reinforced polymer (FRP) reinforced concrete (FRP-RC) beam–column joints is still lacking. The issue is further complicated by a wide variety of FRP reinforcements. In this study, the challenge was investigated numerically and theoretically. A refined three-dimensional nonlinear finite element modeling approach was developed and validated against experimental results. The complex stress state of FRP reinforcements and the bond-slip behavior between FRP bars and concrete were reproduced. A total of 20 full-scale exterior beam–column joints were designed to quantify the effects of a series of parameters, including FRP type, beam shear–span ratio, the diameter of beam longitudinal bars, the diameter of beam-end stirrups, and the diameter and spacing of joint-panel stirrups. Satisfactory seismic performance was confirmed by the hysteretic responses of the specimens. The significant differences among the roles of the parameters were revealed. Especially, compared with their GFRP-RC counterparts, the ultimate loads and the related beam-end displacements of CFRP-RC specimens increased by up to 92.3% and 22.2%, respectively. Taking FRP type into account, a hysteretic model that can accommodate degradations in stiffness and strength was developed for the seismic design of FRP-RC beam–column joints.
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BibTeX
@article{li2026parametric,
title = {{Parametric Study on Seismic Performance of FRP-RC Exterior Beam–Column Joints}},
author = {Jiming Li and Bu Wang and Jing Huang and Xinyi Wang and Peng Zhang and Yabo Wang},
journal = {Polymers},
year = {2026},
month = oct,
doi = {10.3390/polym18202590},
url = {https://www.mdpi.com/2073-4360/18/20/2590},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Parametric Study on Seismic Performance of FRP-RC Exterior Beam–Column Joints
AU - Jiming Li
AU - Bu Wang
AU - Jing Huang
AU - Xinyi Wang
AU - Peng Zhang
AU - Yabo Wang
PY - 2026
DA - 2026/10/21
JO - Polymers
DO - 10.3390/polym18202590
UR - https://www.mdpi.com/2073-4360/18/20/2590
AB - A comprehensive and quantitative understanding of the seismic performance of fiber-reinforced polymer (FRP) reinforced concrete (FRP-RC) beam–column joints is still lacking. The issue is further complicated by a wide variety of FRP reinforcements. In this study, the challenge was investigated numerically and theoretically. A refined three-dimensional nonlinear finite element modeling approach was developed and validated against experimental results. The complex stress state of FRP reinforcements and the bond-slip behavior between FRP bars and concrete were reproduced. A total of 20 full-scale exterior beam–column joints were designed to quantify the effects of a series of parameters, including FRP type, beam shear–span ratio, the diameter of beam longitudinal bars, the diameter of beam-end stirrups, and the diameter and spacing of joint-panel stirrups. Satisfactory seismic performance was confirmed by the hysteretic responses of the specimens. The significant differences among the roles of the parameters were revealed. Especially, compared with their GFRP-RC counterparts, the ultimate loads and the related beam-end displacements of CFRP-RC specimens increased by up to 92.3% and 22.2%, respectively. Taking FRP type into account, a hysteretic model that can accommodate degradations in stiffness and strength was developed for the seismic design of FRP-RC beam–column joints.
SN - 2073-4360
ER -