Open AccessEnvironment-assisted fatigue of steel bridges: A conceptual framework for life assessment
Author(s) -
J S S Sandviknes,
Nirosha D. Adasooriya,
Dimitrios G. Pavlou,
Tor Hemmingsen
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1201/1/012045
Subject(s) - bridge (graph theory) , fatigue cracking , structural engineering , corrosion fatigue , corrosion , fatigue limit , cracking , materials science , engineering , computer science , metallurgy , composite material , medicine
This paper presents a framework based on a recently proposed fatigue strength curve of corroded steel to assess the life of an existing steel bridge exposed to environment-assisted fatigue. Environment-assisted cracking (EAC) and how it affects the structural integrity of steel bridges are introduced by the framework. Determination of both corroded and uncorroded details in a corrosive environment are also included in this framework. To conform the applicability and significance, a fatigue life of a railway bridge was assessed by methods given in the framework. The obtained fatigue lives were compared. The difference of the estimated fatigue lives emphasizes the importance of having this framework to consider the interaction of corrosion and fatigue mechanisms.