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Failure behavior of RC beams flexural reinforced with fiber reinforced polymer (FRP) sheet will be influenced by several factors, such as dimensional characteristics, material properties, and reinforcing conditions. This study is devoted for numerical investigation on influences of main rebar yielding on failure behavior of RC beams flexural reinforced with FRP sheet. In this study, two kinds of reinforcing material were used as main rebar: deformed steel bar and aramid FRP rod. Numerical analysis was carried out by using three-dimensional finite element method, in which, discrete crack approach is employed to take the geometrical discontinuities into account. From this study, it can be confirmed that main rebar yielding gives a significant influence on failure behavior of RC beams flexural reinforced with FRP sheet, and there is no tendency for FRP sheet to be peeled off in case that main rebar without yielding is used

Numerical Study on Influences of Main Rebar Yielding on Failure Behaviorof RC Beams Flexural Reinforced with FRP Sheet