A Study on the Strength Capacity and the Strengthening Effects of Steel Reinforced Concrete(SRC) Beams with Carbon Fiber Sheets (CFS) and Glass Fiber Sheets (GFS)

탄소섬유 및 유리섬유로 보강한 합성보의 내력산정과 보강효과에 대한연구

This study is on the strength capacity and the strengthening effects of crarbon fiber sheets(CFS) and glass fiber sheets (GFS) on steel reinforced concrete(SRC) beams. SRC beams are often used on high-rise building construction to save story height and construction cost. However, there are no strengthening design code in Korea and most engineers design it as steel beams ignored the composite effect if reinforced concrete. Test results on steel reinforced concrete beams reveal thar the strength capacity of SRC beam is more than simple addition of steel and reinforced concrete beams. In case of steel reinforced concrete beams, ultimate moment capacity of strengthening beam of carbon fiber sheets is 120% of non-strengthening one.