Abstract
ABSTRACT Corrosion wastage is a significant factor that leads to load bearing capacity degradation of cable steel wire (CSW) structures. This paper aims to study the influence of pitting corrosion parameters on residual fatigue life (RFL) of a steel cable, so as to fit a series of formulas to predict the RFL of steel cables directly and quickly. Firstly, single and double pitting corroded CSWs are modelled by FEM. Secondly, stress concentration factors (SCFs) and residual fatigue lives (RFLs) of the corroded CSWs are calculated. Finally, calculation formulas of SCFs and RFLs of the CSWs with various pit depths and widths are fitted. The results show that SCF increases with the increase of pit depth and decreases with the increase of pit width. RFL decreases with the increase of pit depth and increases with the increase of pit width. SCF and RFL have nothing to do with the amount of corrosion pits, but only affected by the depth of the deepest pit.
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