What does this research mean for the field?

Concrete columns reinforced with CFRP bars and spirals exhibit minimal residual drift but larger transient drift and approximately 50% less energy dissipation compared to steel-reinforced columns under near-fault ground motions. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To investigate the seismic behavior of concrete columns reinforced with carbon-fiber-reinforced polymer (CFRP) bars and spirals subjected to near-fault ground motions compared to conventional steel-reinforced columns.

September 10, 2026InfrastructuresOpen Access

Seismic Response of Concrete Columns Reinforced with CFRP Bars and Spirals Under Near-Fault Ground Motions

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Authors

MVMinh Quang VoNational University of Civil Engineering TMTakeshi MakiSaitama University

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Implication

Simulation and experimental study reveals minimal residual drift but higher transient drift in CFRP-reinforced concrete columns under near-fault earthquakes, highlighting self-centering behavior.

Key Points

To investigate the seismic behavior of concrete columns reinforced with carbon-fiber-reinforced polymer (CFRP) bars and spirals subjected to near-fault ground motions compared to conventional steel-reinforced columns.
Conducted cyclic loading experiments on a CFRP-reinforced concrete (RC) column and a seismic-resistant steel-RC column to calibrate and validate finite element (FE) models.
Performed numerical simulations on four column designs (one CFRP-RC and three steel-RC variants with varying detailing and stiffness) subjected to cyclic loading and 11 matched near-fault ground motion records.
The CFRP-RC column dissipated approximately 50% less energy than the seismic-resistant steel-RC reference during cyclic loading.
CFRP-reinforced columns sustained no material-level failure despite peak base shears exceeding nominal quasi-static capacities under the ground motion suite.
Under near-fault earthquake records, the CFRP-RC column exhibited the largest transient drift but maintained minimal residual drift, contrasting with steel-RC columns that limited transient drift via hysteretic dissipation but suffered permanent plastic offsets.

Cite This Study

Vo et al. (2026) studied this question.

synapsesocial.com/papers/6aa27ab158559d80afc73742 https://doi.org/10.3390/infrastructures11090317

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Implication

Simulation and experimental study reveals minimal residual drift but higher transient drift in CFRP-reinforced concrete columns under near-fault earthquakes, highlighting self-centering behavior.

Seismic Response of Concrete Columns Reinforced with CFRP Bars and Spirals Under Near-Fault Ground Motions

Discussion

Member takes

Implication

Key Points

Cite This Study

Seismic Response of Concrete Columns Reinforced with CFRP Bars and Spirals Under Near-Fault Ground Motions

Discussion

Member takes

Implication

Key Points

Cite This Study

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