Speaker
Description
Most steel bridge failures and collapses demonstrate that environmental influences substantially impact the structural integrity of steel bridges. Fatigue and corrosion have been recognized as the primary aging processes for steel bridges, especially in marine environments. Acknowledged gaps in research due to the absence of detailed guidelines for evaluating structural integrity in relation to fatigue and corrosion are challenging. Additionally, the absence of general S-N curves for structures of steel prone to corrosive environments, alongside the lack of research on both fatigue and corrosion increasing the vulnerability and failure of steel classes used in bridges,
makes the estimation of the fatigue life of steel bridges uncertain. This paper presents an application of recently proposed framework which is based on fatigue strength curve of corroded steel to assess the life of an existing steel bridge exposed to environment-assisted fatigue. Further this work determines a more accurate fatigue life for steel bridges based on corrosion wastage and actual traffic loads. The obtained fatigue lives by using conventional method (Minner’s rule) and two other proposed methods different scenarios of actual traffic loads to calculate the fatigue life of a specific steel bridge are compared and discussed.
| Conference Topic Areas | Track3: Computational Mechanics and Structural Integrity |
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