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Title |
Evaluation of Seismic Performance of High Strength Reinforced Concrete Exterior Beam-Column Joints Using High Ductile Fiber-Reinforced Mortar
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DOI |
https://doi.org/10.4334/JKCI.2013.25.4.419 |
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Keywords |
고인성섬유 복합모르타르 ; 내진성능 ; 외부 보-기둥 접합부 ; 반복하중 ; 전단보강근 high ductile fiber-reinforced mortar ; seismic performance ; exterior beam-column joint ; cyclic loads ; shear reinforcement |
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Abstract |
In this study, experimental research was carried out to evaluate the constructability and seismic performance of high strength R/C exterior beam-column joints regions, with or without the shear reinforcement, using high ductile fiber-reinforced mortar. Five specimens of retrofitted the exterior beam-column joint regions using high ductile fiber-reinforced mortar are constructed and tested for their retrofit performances. Specimens designed by retrofitting the exterior beam-column joint regions (BCJNSP series) of existing reinforced concrete building showed a stable mode of failure and an increased its maximum load-carrying capacity by 1.09~2.03 times in comparison with specimen of BCJNS due to the effect of enhancing dispersion of crack control at the time of initial loading and bridging of fiber from retrofitting new high ductile materials during testing. Specimens of BCJNSP series attained its maximum load carrying capacity by 0.92~0.96 times and increased its energy dissipation capacity by 1.62 times when compared to standard specimen of BCJC with a displacement ductility of 4.
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