A two-stage numerical simulation method for steel bar corrosion in concrete

Abstract

The invention provides a two-stage numerical simulation method for steel bar corrosion. This method is useful for concrete structures in the ocean or in harsh environments. Chloride ion erosion in the environment can cause steel bar corrosion, resulting in a decrease in the mechanical properties of the reinforced concrete structure, which seriously affects the overall performance of the structure. Since the detection and monitoring of steel bar corrosion in concrete is difficult, it is particularly important to accurately simulate the steel bar corrosion process caused by chloride ion diffusion in concrete. The present invention couples the chloride ion diffusion in concrete with steel bar corrosion for analysis, realizes the numerical simulation of the steel bar corrosion process during the service life of the reinforced concrete structure and gives its corrosion process, which can be used for the analysis and evaluation of the performance of reinforced concrete structures.

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