Numerical Approach to Structural Performance Assessment of Corroded Reinforced Concrete Structures

摘要

This paper presents a reliable method for assessing structural performance of reinforced concreternstructures. A spring network model, which is one of the discrete-type numerical approaches, is usedrnto predict current structural performance of deteriorated reinforced concrete structures due to steelrncorrosions. The influence of corrosion distribution of steel reinforcing bars on flexural behavior ofrnreinforced concrete beams is studied. The numerical results indicates that the flexural capacity ofrnreinforced concrete beams with steel corrosion depends on the minimum cross sectional area ofrncorroded steel bars, and ductility of beams is strongly influenced by the condition of bondrndeterioration between concrete and steel bars.