Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 187, Issue -, Pages 681-690Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2018.07.249
Keywords
Corrosion; Bridge wire; Fatigue life; Accelerated corrosion tests; AFGROW
Categories
Funding
- Key Project of Chinese National Programs for Fundamental Research and Development (973 Program) [2013CB036303]
- National Natural Science Foundation of China [51408424]
- Fundamental Research Funds for the Central Universities
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This paper presents an experimental research on the fatigue performance of corroded high-strength steel wires used in bridges. Three dimensional (3D) profile measurements and fatigue tests were conducted on the steel wires on six corrosion levels. It is found that the experimental pitting depth followed a normal distribution and both the location and scale parameters increased with the corrosion degree. The fatigue test results indicated that corrosion could cause a significant decrease in the fatigue life of corroded steel wires. The S-N curves were bilinear in the log-log scale and the logarithmized fatigue life decreased linearly with the corrosion degree. An empirical formula for fatigue life calculation was established considering the corrosion effect. A method based on 3D measurements and AFGROW software was proposed to predict the remaining fatigue life of corroded steel wires. The predicted fatigue lives agreed well with the test results. (C) 2018 Elsevier Ltd. All rights reserved.
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