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비선형 유한요소법에 의한 철근콘크리트 보의 보강에 따른 구조성능 평가
하기주 ( Ha Gee Joo ),신종학 ( Shin Jong Hack ),김광연 ( Kim Kwang Yeon ),이영범 ( Lee Young Bum ),홍석열 ( Hong Suk Youl ) 한국구조물진단유지관리공학회 2001 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.5 No.1
In this study, analytical results were compared with experimental results and estimated the results by analysis using non-linear finite element analysis method for existing reinforced concrete beams and steel plate or carbon fiber sheet strengthened reinforced concrete beams. In the case of specimens, strengthened with steel plate having the strengthening length which was reinforced 0.5m to each direction of its length starting from the lower center part of the beam and the strengthening thickness of 6mm, 9mm, 12mm(SS100-6, SS100-9, SS100-12), ultimate load-carrying capacity of each specimen are 18.5ton, 19ton, 20ton and increased about 12%, 15%, 21% compared with standard specimen(BLS-S). In the case of specimens, strengthened with carbon fiber sheet having the strengthening length which was reinforced 0.5m to each direction of its length starting from the lower center part of the beam and the strengthening sheet figures of 1, 3, 5(CS100-1, CS100-3,SS100-5), ultimate load-carrying capacity of each specimen are 18ton, 20ton, 21ton and increased about 8%, 21%, 27% compared with standard specimen(BLS-S). Therefore, the structural performance for reinforced concrete beams with strengthening method and quantity of steel plate and carbon fiber sheet can be estimated and after on, it is judged that the results of this study can be applied to analysis and design for reinforcing of reinforced concrete beams.