ArticleScientific reports2026
Structural response of RC beam-column joints reinforced with smart alloys and polyvinyl alcohol fibers.
Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
This study introduces an innovative experimental approach that combines a hybrid system of polyvinyl alcohol (PVA) fiber–reinforced composites and shape memory alloys (SMA) to enhance the seismic performance of exterior reinforced concrete (RC) beam–column joints (BCJs). The proposed technique leverages the excellent self-centering capability of SMA together with the excellent energy dissipation characteristics of steel and PVA fibers to improve joint behavior without compromising load capacity. Four one-third–scale RC-BCJ specimens were cast and tested under quasi-static reversed cyclic loading. The results showed that both the PVA fiber scheme and the proposed hybrid system exhibited reduced residual displacements, higher self-centering capacity, greater energy dissipation, improved load and displacement capacities, smaller crack widths, and slower stiffness degradation compared with the control specimen. Furthermore, a finite element (FE) model was developed in ABAQUS to simulate the hysteretic response of the tested joints, and the numerical results showed good agreement with the experimental findings.
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