Predicting the flexural capacity of RC beam with partially unbonded steel reinforcement

Xiao-Hui Wang and Xi-La Liu

Abstract

Due to the reduction of bond strength resulting from the high corrosion level of reinforcing bars, influence of this reduction on flexural capacity of reinforced concrete (RC) beam should be considered. An extreme case is considered, where bond strength is complete lost and/or the tensile steel are exposed due to heavy corrosion over a fraction of the beam length. A compatibility condition of deformations of the RC beam with partially unbonded length is proposed. Flexural capacity of this kind of RC beam is predicted by combining the proposed compatibility condition of deformations with equilibrium condition of forces. Comparison between the model

Key Words

flexural capacity; partial; unbonded length; exposed steel; compatibility condition of deformations

Address

Xiao-Hui Wang: Department of Civil Engineering, Shanghai Jiaotong University, Minhang, Shanghai, 200240, P. R. China Xi-La Liu: Department of Civil Engineering, Shanghai Jiaotong University, Minhang, Shanghai, 200240, P. R. China

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