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Failure analysis of prestressed anchor bars

AuthorsElices, M.; Valiente, Andrés ; Caballero, L.; Iordachescu, M.; Fullea, J. ; Sánchez-Montero, J.; López, Víctor
KeywordsEutectoid steel
Damage tolerance
Fracture toughness
Prestressing bars
Issue Date2012
CitationEngineering Failure Analysis 24: 57-66 (2012)
AbstractThree broken steel bars from a sewed crack in a dam are reported. The inspection of the fracture surfaces of the prestressed bars suggests that fractures were triggered by small cracks and by the inherent brittleness of the bars, as fracture toughness was about 40MPam 1/2. The analysis of the failures shows that the usual design requirements for prestressing bars fail to warn against brittle failures if some damage exists. Some recommendations, based on the concept of damage tolerance, are suggested to avoid similar unfortunate incidents. © 2012 Elsevier Ltd.
Identifiersdoi: 10.1016/j.engfailanal.2012.03.007
issn: 1350-6307
Appears in Collections:(IETCC) Artículos
(CENIM) Artículos
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