Documents disponibles écrits par cet auteur

On the loading/shear strength coupling in the probabilistic formulation of the limit-state in shear for gravity dams / Claudio Carvajal in European journal of environmental and civil engineering, Vol. 14 N° 3 (Mars 2010) 

Public ISBD [article]  in European journal of environmental and civil engineering > Vol. 14 N° 3 (Mars 2010) . - pp. 283-301 Titre : On the loading/shear strength coupling in the probabilistic formulation of the limit-state in shear for gravity dams Type de document : texte imprimé Auteurs : Claudio Carvajal, Auteur ; Laurent Peyras, Auteur ; Claude Bacconnet, Auteur Année de publication : 2010 Article en page(s) : pp. 283-301 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Gravity  dam  Shear  strength  Intrinsic  curve  Reliability Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : This paper proposes a methodology to take into account of the dependence between hydraulic loading and shear strength in a probability-based procedure for assessing the gravity dam structural safety. This is a major point in a probability-based approach where extreme loadings are a determining factor of dam reliability. The proposed approach uses a parabolic formulation of concrete shear strength. It aims at providing a better representation of the intrinsic curve for normal stress lower levels that might develop in the dam upstream area under extreme hydrostatic loading conditions. Based on the FORM method and on Monte Carlo simulations, a case study shows how relevant the proposed method is and the impact thereof on the results of a reliability analysis completed for an existing gravity dam. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/resnum.jsp [article] On the loading/shear strength coupling in the probabilistic formulation of the limit-state in shear for gravity dams [texte imprimé] / Claudio Carvajal, Auteur ; Laurent Peyras, Auteur ; Claude Bacconnet, Auteur . - 2010 . - pp. 283-301. Génie Civil Langues : Anglais (eng) in European journal of environmental and civil engineering > Vol. 14 N° 3 (Mars 2010) . - pp. 283-301 Mots-clés : Gravity  dam  Shear  strength  Intrinsic  curve  Reliability Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : This paper proposes a methodology to take into account of the dependence between hydraulic loading and shear strength in a probability-based procedure for assessing the gravity dam structural safety. This is a major point in a probability-based approach where extreme loadings are a determining factor of dam reliability. The proposed approach uses a parabolic formulation of concrete shear strength. It aims at providing a better representation of the intrinsic curve for normal stress lower levels that might develop in the dam upstream area under extreme hydrostatic loading conditions. Based on the FORM method and on Monte Carlo simulations, a case study shows how relevant the proposed method is and the impact thereof on the results of a reliability analysis completed for an existing gravity dam. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/resnum.jsp

Probability-based assessment of dam safety using combined risk analysis and reliability methods – application to hazards studies / Laurent Peyras in European journal of environmental and civil engineering, Vol. 16 N° 7 (Juillet 2012) 

Public ISBD [article]  in European journal of environmental and civil engineering > Vol. 16 N° 7 (Juillet 2012) . - pp. 795-817 Titre : Probability-based assessment of dam safety using combined risk analysis and reliability methods – application to hazards studies Type de document : texte imprimé Auteurs : Laurent Peyras, Auteur ; Claudio Carvajal, Auteur ; Huguette Felix, Auteur Année de publication : 2012 Article en page(s) : pp. 795-817 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Dam  Reliability  Risk  analysis  Security  Hazards  study Résumé : Dam safety assessment is a major challenge for engineers specialising in hydraulic works. It is now standardised in regulations providing for hazards studies using probability-based risk analysis procedures. Dam safety probability-based assessment includes two key scientific issues: the modelling of complex mechanisms that occur within the works, and a probability-based assessment of structural safety. This paper introduces a combined application of risk analysis and dam reliability methodologies. This combination required the completion of our work on the adaptation of risk analysis methods to dams, and on the probability-based modelling of strength and loading input data for a reliability-based analysis. These methodologies are then implemented as part of a hazards study on a roller-compacted-concrete gravity dam. ISSN : 1964-8189 En ligne : http://www.tandfonline.com/doi/full/10.1080/19648189.2012.672200 [article] Probability-based assessment of dam safety using combined risk analysis and reliability methods – application to hazards studies [texte imprimé] / Laurent Peyras, Auteur ; Claudio Carvajal, Auteur ; Huguette Felix, Auteur . - 2012 . - pp. 795-817. Génie Civil Langues : Anglais (eng) in European journal of environmental and civil engineering > Vol. 16 N° 7 (Juillet 2012) . - pp. 795-817 Mots-clés : Dam  Reliability  Risk  analysis  Security  Hazards  study Résumé : Dam safety assessment is a major challenge for engineers specialising in hydraulic works. It is now standardised in regulations providing for hazards studies using probability-based risk analysis procedures. Dam safety probability-based assessment includes two key scientific issues: the modelling of complex mechanisms that occur within the works, and a probability-based assessment of structural safety. This paper introduces a combined application of risk analysis and dam reliability methodologies. This combination required the completion of our work on the adaptation of risk analysis methods to dams, and on the probability-based modelling of strength and loading input data for a reliability-based analysis. These methodologies are then implemented as part of a hazards study on a roller-compacted-concrete gravity dam. ISSN : 1964-8189 En ligne : http://www.tandfonline.com/doi/full/10.1080/19648189.2012.672200