Numerical Simulation Of Corroded Reinforced Concrete Beam Flexural Capacity

More and more reinforced concrete structures are destroyed for durability problems, and corrosion of the steel bar is one important factor influencing the durability of the reinforced concrete structures, which have been indicating through the engineering surveys these years.In this thesis, the author researches influences of corrosion towards the bending bearing capacity, by making the model of corroded beams considering the effects both to mechanical property of steel bar and steel bar-concrete bond strength on the basis of the familiar part corrosion of the reinforced concrete structures. This thesis contains four parts following:(1) researches on the degeneration towards both the mechanical property of steel bar and steel bar-concrete bond strength;(2) the foundation of the finite analysis models considering the effects both to mechanical property of steel bar and steel bar-concrete bond strength based on familiar part corroded beams;(3) figuring out the bending bearing capacity of the part corroded beams under different quotiety and length of corrosion, then analyzing the results such as stress of steel bar,stress of concrete,flexibility,slippage between steel bar and concrete;(4) providing a reasonable method to calculate the bending bearing capacity of part corroded beams based on the analysis towards the nonlinearity results above. Finally the author gives some suggestion to this subject for further study.