Mechanistic model and numerical analysis for corrosion damage of reinforced concrete structure
Source abstract
Abstract
Through sampling, we have conducted systematically the analyses of changing characteristics of steel bar corrosion and crack width on reinforced concrete surfaces. Based on the analyses from the sampling, we have obtained the mathematical model for outer elliptical contour and the formulas to calculate thickness of corrosion layer at any associated point on steel bars. A stress model of discrete displacement on fictitious boundary for the corrosion layer and corresponding solutions for displacement and stress on the fictitious boundary have been advanced, which solve quantitatively the stress to the structure acted by corrosion layer. Finally, under the conditions of displacement on the fictitious boundary and by applying numerical manifold method, we had performed the simulation of track for crack propagation caused by corrosion and expansion of side steel bars as time elapses in existing reinforced concrete structures. The simulation results have conformed to those of the experiment.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Concrete Corrosion and Durability · Geotechnical Engineering and Underground Structures · Structural Behavior of Reinforced Concrete
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References (13)
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