Details

Autor(en) / Beteiligte

• Maljaars, Johan
• Bonet, Eric
• Pijpers, Richard J.M.

Titel

Fatigue resistance of the deck plate in steel orthotropic deck structures

Ist Teil von

• Engineering fracture mechanics, 2018-10, Vol.201, p.214-228

Ort / Verlag

New York: Elsevier Ltd

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •Deck plate crack in orthotropic decks studied with fracture mechanics (FM)•FM confirmed high fatigue resistance experienced in tests.•Fast initial crack growth is followed by slow growth of large cracks.•Surface finish (e.g. asphalt) reduces stress range.•Surface finish increases initial growth rate but reduces rate for large cracks. Steel orthotropic decks in bridges and ferries have shown to be prone to fatigue cracking. A typical fatigue crack observed in these structures initiates at the root of the weld between the deck plate and stringer and grows into the deck plate. Due to limited fatigue test data available and the deviating characteristics of this type of crack as compared to other types of fatigue cracks, the fatigue strength is uncertain. In this study, a linear elastic fracture mechanics model has been developed for this type of crack, providing insight into its fatigue performance. The model predicts a relatively high fatigue resistance which is close to the results of fatigue tests. The model further predicts a relatively long residual fatigue life after crack detection, providing large inspection intervals.