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Title |
Numerical Study for Seismic Strengthening of RC columns Using Fiber Reinforced Plastic Composite
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Keywords |
내진보강 ; FRP 복합재료 ; 섬유 ; 기둥보강 ; Push-Over 해석 ; 유한요소 Seismic retrofitted ; FRP composite ; Fiber ; Column retrofitted ; Push-Over Analysis(NSA) ; Finite element |
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Abstract |
As increasing number of large-size earthquake around Korean peninsula, many interests have been focused to the earthquake strengthening of existing structures. Fiber reinforced plastic composite material is one of strengthening material widely used to increase seismic performance of structures. It should have high stiffness as well as large ductility to provide best strengthening result. Thus selection of stiffener and fiber in composite is of important. In this study, the optimal combination of fiber and stiffener is selected with variety of tensile tests. In order to investigate performance of chosen composite material, several finite element analyses are performed with proposed FRP composite material for existing RC columns. It is discussed that the seismic performance of strengthened columns through the load-displacement relationship. It is shown that the proposed composite material can increase the strength as well as ductility of exiting RC columns.
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