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Evaluation of fatigue bond strength of anchorage zones with a mechanical model / Carlos Zanuy in Journal of structural engineering, Vol. 139 N° 1 (Janvier 2013) 

Public ISBD [article]  in Journal of structural engineering > Vol. 139 N° 1 (Janvier 2013) . - pp. 28–38 Titre : Evaluation of fatigue bond strength of anchorage zones with a mechanical model Type de document : texte imprimé Auteurs : Carlos Zanuy, Auteur ; Luis Albajar, Auteur ; Pablo De la Fuente, Auteur Année de publication : 2013 Article en page(s) : pp. 28–38 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Reinforced  concrete  Anchorages  Fatigue Résumé : The paper describes a numerical model to analyze the fatigue behavior of RC anchorage zones. The model takes into account the cycle-dependent bond-slip behavior at the steel-concrete interface and is able to reproduce the experimental increase of the relative slip developed with number of load cycles, as well as the process of redistribution of stresses that takes place over the anchorage length as a result of fatigue damage. The results compare satisfactorily with existing experimental results. The model has been used to derive S-N curves to provide the fatigue strength of anchorage zones under different confinement conditions and various values of the anchorage length-to-diameter ratio and the steel diameter. The results indicate that the confinement degree plays a significant role in the fatigue bond strength: no fatigue problems are found for the well-confined concrete condition, but significantly short fatigue strength is obtained under the moderately confined and unconfined concrete conditions. ISSN : 0733-9445 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000602 [article] Evaluation of fatigue bond strength of anchorage zones with a mechanical model [texte imprimé] / Carlos Zanuy, Auteur ; Luis Albajar, Auteur ; Pablo De la Fuente, Auteur . - 2013 . - pp. 28–38. Génie Civil Langues : Anglais (eng) in Journal of structural engineering > Vol. 139 N° 1 (Janvier 2013) . - pp. 28–38 Mots-clés : Reinforced  concrete  Anchorages  Fatigue Résumé : The paper describes a numerical model to analyze the fatigue behavior of RC anchorage zones. The model takes into account the cycle-dependent bond-slip behavior at the steel-concrete interface and is able to reproduce the experimental increase of the relative slip developed with number of load cycles, as well as the process of redistribution of stresses that takes place over the anchorage length as a result of fatigue damage. The results compare satisfactorily with existing experimental results. The model has been used to derive S-N curves to provide the fatigue strength of anchorage zones under different confinement conditions and various values of the anchorage length-to-diameter ratio and the steel diameter. The results indicate that the confinement degree plays a significant role in the fatigue bond strength: no fatigue problems are found for the well-confined concrete condition, but significantly short fatigue strength is obtained under the moderately confined and unconfined concrete conditions. ISSN : 0733-9445 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000602