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Title |
Seismic Performance of Piloti-Type Structures with Columns Strengthened with Aramid Fiber Sheets
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Authors |
양근혁(Keun-Hyeok Yang) ; 문주현(Ju-Hyun Mun) ; 임채림(Chae-Rim Im) ; 노광근(Kwang-Geun Rho) |
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DOI |
https://doi.org/10.11112/jksmi.2023.27.6.201 |
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Keywords |
필로티 구조물; 내진성능; 아라미드 섬유시트 보강; 편심율; 연성보강 Piloti-type structures; Seismic performance; Aramid fiber sheet strengthening; Eccentricity; Ductile strengthening |
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Abstract |
This study is to evaluate the ductility strengthening effect of aramid fiber sheets on piloti-type structures. Two piloti-type structure specimens were prepared and tested under statical cyclic lateral loads. The ductility strengthening effect was validated from the analysis of lateral load-displacement relationship, displacement ductility ratio, work damage index and torsion behavior. Test results showed that the post-peak behavior of piloti-type structures with columns strengthened with aramid fiber sheets tended to be ductile resulting from preventing shear failure and minimizing torsion due to the effective lateral confinement of column concrete by aramid fiber sheet. Consequently, the displacement ductility ratio and work damage index of piloti-type structures with columns with strengthened with aramid fiber sheets were 4.63 and 42.81 times higher than those of non strengthened piloti-type structures.
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