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Title |
Seismic Performance and Nonlinear Modeling of RC Columns Strengthened with Basalt Fiber Sheets
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Authors |
송정원(Jeong-Weon Song) ; 송진규(Jin-Gyu Song) |
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DOI |
https://doi.org/10.11112/jksmi.2025.29.3.59 |
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Keywords |
내진보수보강; 반복 주기하중; 섬유시트 보강; 바잘트섬유 시트; 내진성능 Seismic rehabilitation; Cyclic lateral loading; Fiber sheet reinforcing; Basalt fiber sheet; Seismic performance |
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Abstract |
This study investigates the seismic strengthening effect of basalt fiber sheet reinforcement and develops a corresponding nonlinear analytical model. Cyclic loading tests and nonlinear analyses were conducted on four reinforced concrete columns: one unreinforced reference specimen and three specimens strengthened with basalt fiber sheets. Nonlinear analyses were performed using Perform-3D (a nonlinear structural analysis software). The strengthened columns exhibited approximately double the lateral strength and drift capacity compared to the unreinforced specimen and showed about nine times greater energy dissipation. The proposed nonlinear model demonstrated close agreement with the experimental results, confirming its validity for simulating the inelastic behavior of reinforced columns.
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