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Title |
Seismic Retrofitting of Existing Reinforced Concrete Columns Using Binding Column Method
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Authors |
허무원(Moo-Won Hur) ; 박태원(Tae-Won Park) ; 이상현(Sang-Hyun Lee) ; 박현수(Hyun-Soo Park) |
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DOI |
https://doi.org/10.11112/jksmi.2022.26.5.119 |
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Keywords |
필로티 구조; 외부부착형 내진보강공법; 내진 보강; 포스트텐션; 구속 효과 Piloti Structure; BCM; Seismic; Seismic retrofitting; Post-tension; Confinement effect |
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Abstract |
This study proposed a BCM(Binding Column Method) that can reinforce the insufficient seismic force of piloti buildings that are not designed for seismic resistance. In addition, 4 reinforcement specimens and 1 reference specimen were manufactured for the proposed seismic reinforcement method. The effect of improving seismic performance before and after reinforcement was examined through repeated loading tests. As a result of experiment, seismic reinforcement specimen with BCM system showed hysteretic characteristics of a large ellipse with great energy dissipation ability and increased strength and stiffness, while reference specimen showed rapid reduction in strength and brittle shear failure column. In addition, it can be seen that the reinforcing effect is improved as the gap is narrow, the torque is large, and the thickness of the L-shaped steel sheet is thicker. The SC4 specimen showed the best seismic performance reinforcement effect.
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