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Title |
Seismic Performance Improved Design of Reinforced Concrete Columns Strengthened by Steel Jackets Using Displacement-based Design
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Keywords |
스틸재킷 ; 변위기반설계법 ; 내진 성능 개선 ; 철근콘크리트 기둥 steel jacket ; displacement-based design ; seismic retrofit ; reinforced concrete column |
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Abstract |
In this study, a procedure of performance-based design for the seismic retrofit of reinforced concrete columns strengthened by steel jackets has been presented. In order to predict the target displacement of retrofitted columns, a nonlinear analysis of reinforced concrete columns retrofitted with steel jackets has been developed based on a segmental model with the fiber cross-sectional approach. The seismic displacement level of retrofitted columns is estimated both by the direct displacement-based design method and by the displacement coefficient method. In examples of seismic retrofitted columns, the current seismic retrofit procedure gives good results in improvements of displacement levels and displacement ductilities of retrofitted columns.
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