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Title |
Earthquake-Resistant Capacity of RC Columns Retrofitted by Fiber-Steel Composite Plate
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Authors |
박태만 ; 박성민 ; 홍혁준 ; 강경수 ; 윤정배 |
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Keywords |
기둥보강 ; 내진성능 ; 섬유-강판 ; 복합판 ; 반복하중 retrofitted column ; seismic capacity ; fiber-steel ; composite plate ; cyclic load |
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Abstract |
The purpose of this study is to investigate the strength and ductility improvement of columns retrofitted by steel-fiber composite plate. Test specimens strengthened by three different materials - steel plate(SP), carbon fiber sheet(CF) and fiber-steel composite plate(CP) - were tested under cyclic lateral load with a constant axial load equal to 20% of the axial compression capacity. The structural capacity of composite plate was good or better than that of other retrofitting materials. Test results from all retrofitted specimens showed that considerably higher retrofitting amount was required for strength enhancement. The ductility of retrofitted columns by composite plate was fairly improved. Also, energy ductility ratio was more effective than displacement ductility ratio for ductility estimation of retrofitted column.
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