The paper takes the corrosion fatigue damage of cable or sling in the actual bridge as a starting point. The high-strength steel wire is chosen as the basic component to study the corrosion fatigue failure mode. The service life prediction model is put forward, which provides a basis for future research. In this paper, the S-N curves of the steel wire with the different corrosion degrees are given through fatigue tests of six groups of steel wire under different corrosion conditions. The results show that the higher the corrosion degree, the steeper the S-N curve, and the fatigue life considering corrosion are much lower than that without considering corrosion. Finally, a fatigue life prediction model considering the coupling effect of corrosion fatigue is proposed and embedded into Abaqus v6.14 (Dassault, Paris, French). The calculation results show that the fatigue model considering the corrosion can predict the service life to some extent.

中文翻译：

---

高强度钢丝腐蚀疲劳试验与数值模拟

本文以实际桥梁中电缆或吊索的腐蚀疲劳损伤为起点。选择高强度钢丝作为研究腐蚀疲劳失效模式的基本组成部分。提出了使用寿命预测模型，为今后的研究提供了依据。通过对六组钢丝在不同腐蚀条件下的疲劳试验，给出了不同腐蚀程度的钢丝的SN曲线。结果表明，腐蚀程度越高，SN曲线越陡峭，考虑腐蚀的疲劳寿命远低于不考虑腐蚀的疲劳寿命。最后，提出了一种考虑腐蚀疲劳耦合效应的疲劳寿命预测模型，并将其嵌入到Abaqus v6.14（Dassault，巴黎，法国）中。