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Title |
Seismic Retrofit Effect for Column of Subway Tunnel Reinforced by FRP-Ductile Material Layered Composites
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Keywords |
FRP-연성재 적층복합체 ; 적층조건 ; 내진보강 ; 내진성능 ; FRP-Ductile Material ; Layered Composites ; Seismic Reinforcement ; Seismic Performance |
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Abstract |
Recently the earthquake occurrences in Korea are likely to increase. Therefore, the facilities such as bridges and tunnels under the unexpected earthquakes need to be enhanced. Especially most of the subways previously built before 1988 have not been seismically designed, so their seismic safety requirements are required to be inspected and/or reinforced. In this study, the seismic reinforcement using FRP-ductile material layered composites was proposed to reinforce for the subway columns. Material properties of FRP-ductile material layered composites were calculated by laboratory tests considering the laminated conditions of the composites. Numerical simulations were performed using the experimental results of the specimens and the calculated properties of the composites. Seismic performance varied according to the types of composites: ductile material, number of layers, fiber orientations.
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