Documents disponibles écrits par cet auteur

A Bayesian approach to estimate material properties from global statistical data / Benjamin Richard in European journal of environmental and civil engineering, Vol. 16 N° 3-4 (Mars/Avril 2012) 

Public ISBD [article]  in European journal of environmental and civil engineering > Vol. 16 N° 3-4 (Mars/Avril 2012) . - pp. 460-470 Titre : A Bayesian approach to estimate material properties from global statistical data Type de document : texte imprimé Auteurs : Benjamin Richard, Auteur ; Lucas Adelaide, Auteur ; Christian Cremonab, Auteur Année de publication : 2012 Article en page(s) : pp. 460-470 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Bayesian  networks  Updating  Damage  mechanics  Finite  elements  Modelling Résumé : This paper is devoted to presenting an updated approach based on the use of Bayesian networks. This methodology aims to update the statistical parameters related to a mechanical model thanks to experimental data. The proposed updating process has been applied to engineering problems. The results show that the proposed approach could be used to estimate the material parameters of a given structure and avoids carrying out destructive tests on site. DEWEY : 624 ISSN : 1964-8189 En ligne : http://www.tandfonline.com/doi/abs/10.1080/19648189.2012.667999 [article] A Bayesian approach to estimate material properties from global statistical data [texte imprimé] / Benjamin Richard, Auteur ; Lucas Adelaide, Auteur ; Christian Cremonab, Auteur . - 2012 . - pp. 460-470. Génie Civil Langues : Anglais (eng) in European journal of environmental and civil engineering > Vol. 16 N° 3-4 (Mars/Avril 2012) . - pp. 460-470 Mots-clés : Bayesian  networks  Updating  Damage  mechanics  Finite  elements  Modelling Résumé : This paper is devoted to presenting an updated approach based on the use of Bayesian networks. This methodology aims to update the statistical parameters related to a mechanical model thanks to experimental data. The proposed updating process has been applied to engineering problems. The results show that the proposed approach could be used to estimate the material parameters of a given structure and avoids carrying out destructive tests on site. DEWEY : 624 ISSN : 1964-8189 En ligne : http://www.tandfonline.com/doi/abs/10.1080/19648189.2012.667999

Damage mechanics applied to the modelling of corroded reinforced concrete structures / Frédéric Ragueneau in European journal of environmental and civil engineering, Vol. 14 N° 6-7 (Juin 2010) 

Public ISBD [article]  in European journal of environmental and civil engineering > Vol. 14 N° 6-7 (Juin 2010) . - pp. 869-890 Titre : Damage mechanics applied to the modelling of corroded reinforced concrete structures : Steel, concrete and interface Type de document : texte imprimé Auteurs : Frédéric Ragueneau, Auteur ; Benjamin Richard, Auteur ; Christian Crémona, Auteur Année de publication : 2011 Article en page(s) : pp. 869-890 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Corrosion  Damage  Plasticity  Steel/concrete  interface Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Continuum damage mechanics allows accounting at the representative elementary volume for microcracks growth. Nowadays, describing the mechanical behavior of corroded structures remains of primary importance, especially when optimal maintenance policies have to be defined. Expressed within the framework of continuum damage mechanics, three constitutive models to describe the behavior of corroded steel, concrete and steel/concrete interface are exposed in this paper. To highlight the coupling use of these models, a bidimensional structural application is shown. It consists in a corroded RC beam subjected to a four-point bending test. Numerical results appear as encouraging for further developments. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/resnum.jsp [article] Damage mechanics applied to the modelling of corroded reinforced concrete structures : Steel, concrete and interface [texte imprimé] / Frédéric Ragueneau, Auteur ; Benjamin Richard, Auteur ; Christian Crémona, Auteur . - 2011 . - pp. 869-890. Génie Civil Langues : Anglais (eng) in European journal of environmental and civil engineering > Vol. 14 N° 6-7 (Juin 2010) . - pp. 869-890 Mots-clés : Corrosion  Damage  Plasticity  Steel/concrete  interface Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Continuum damage mechanics allows accounting at the representative elementary volume for microcracks growth. Nowadays, describing the mechanical behavior of corroded structures remains of primary importance, especially when optimal maintenance policies have to be defined. Expressed within the framework of continuum damage mechanics, three constitutive models to describe the behavior of corroded steel, concrete and steel/concrete interface are exposed in this paper. To highlight the coupling use of these models, a bidimensional structural application is shown. It consists in a corroded RC beam subjected to a four-point bending test. Numerical results appear as encouraging for further developments. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/resnum.jsp

Influence of accelerated corrosion on the reinforced cover concrete cracking behavior / Benjamin Richard in European journal of environmental and civil engineering, Vol. 16 N° 3-4 (Mars/Avril 2012) 

Public ISBD [article]  in European journal of environmental and civil engineering > Vol. 16 N° 3-4 (Mars/Avril 2012) . - pp. 450-459 Titre : Influence of accelerated corrosion on the reinforced cover concrete cracking behavior : Experimental and numerical study Type de document : texte imprimé Auteurs : Benjamin Richard, Auteur ; Marc Quiertant, Auteur ; Véronique Bouteiller, Auteur Année de publication : 2012 Article en page(s) : pp. 450-459 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Reinforced  concrete  Corrosion  Corrosion  modeling  Electrochemical  tests Résumé : This article aims to present both experimental and numerical studies of the corrosion induced cracking pattern evolution of a reinforced concrete sample subjected to accelerated corrosion. The beam was not mechanically loaded. Rebars were intentiostatically corroded using a current density of 100μA/cm² of steel, in a chloride pond and for a 30 day period. Electrochemical tests and visual inspections were carried out in order to characterise the rebar state. Width evolution of the main longitudinal cover crack was measured thanks to ball-extensometer. A numerical modeling of the corroded RC beam has also been realised. The experimental and numerical results are in good agreement confirming the efficiency of the proposed modelling. DEWEY : 624 ISSN : 1964-8189 En ligne : http://www.tandfonline.com/doi/abs/10.1080/19648189.2012.667997 [article] Influence of accelerated corrosion on the reinforced cover concrete cracking behavior : Experimental and numerical study [texte imprimé] / Benjamin Richard, Auteur ; Marc Quiertant, Auteur ; Véronique Bouteiller, Auteur . - 2012 . - pp. 450-459. Génie Civil Langues : Anglais (eng) in European journal of environmental and civil engineering > Vol. 16 N° 3-4 (Mars/Avril 2012) . - pp. 450-459 Mots-clés : Reinforced  concrete  Corrosion  Corrosion  modeling  Electrochemical  tests Résumé : This article aims to present both experimental and numerical studies of the corrosion induced cracking pattern evolution of a reinforced concrete sample subjected to accelerated corrosion. The beam was not mechanically loaded. Rebars were intentiostatically corroded using a current density of 100μA/cm² of steel, in a chloride pond and for a 30 day period. Electrochemical tests and visual inspections were carried out in order to characterise the rebar state. Width evolution of the main longitudinal cover crack was measured thanks to ball-extensometer. A numerical modeling of the corroded RC beam has also been realised. The experimental and numerical results are in good agreement confirming the efficiency of the proposed modelling. DEWEY : 624 ISSN : 1964-8189 En ligne : http://www.tandfonline.com/doi/abs/10.1080/19648189.2012.667997

A simplified numerical approach of global behaviour of RC beams degraded by corrosion / Lucas Adelaide in European journal of environmental and civil engineering, Vol. 16 N° 3-4 (Mars/Avril 2012) 

Public ISBD [article]  in European journal of environmental and civil engineering > Vol. 16 N° 3-4 (Mars/Avril 2012) . - pp. 414-439 Titre : A simplified numerical approach of global behaviour of RC beams degraded by corrosion Type de document : texte imprimé Auteurs : Lucas Adelaide, Auteur ; Benjamin Richard, Auteur ; Frédéric Ragueneau, Auteur Année de publication : 2012 Article en page(s) : pp. 414-439 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Steel/concrete  interface  Modelling  Multifiber  Corrosion  Reinforced  concrete Résumé : One of major causes responsible for the performance loss of reinforced concrete structures is the corrosion phenomenon. Thereby, taking into account the local effects of the steel/concrete interface is of primary importance to predict properly the response of corroded reinforced concrete structures. A multifiber-based model including the steel/concrete interface is proposed. This interface model allows taking into consideration the bond strength variation due to corrosion. Such an approach leads to reasonable computational costs which a powerful feature of the model. A numerical study of beams already studied in the French project « benchmark des poutres de la Rance » is proposed in order to show the efficiency and reliability of the proposed model. DEWEY : 624 ISSN : 1964-8189 En ligne : http://www.tandfonline.com/doi/abs/10.1080/19648189.2012.667990 [article] A simplified numerical approach of global behaviour of RC beams degraded by corrosion [texte imprimé] / Lucas Adelaide, Auteur ; Benjamin Richard, Auteur ; Frédéric Ragueneau, Auteur . - 2012 . - pp. 414-439. Génie Civil Langues : Anglais (eng) in European journal of environmental and civil engineering > Vol. 16 N° 3-4 (Mars/Avril 2012) . - pp. 414-439 Mots-clés : Steel/concrete  interface  Modelling  Multifiber  Corrosion  Reinforced  concrete Résumé : One of major causes responsible for the performance loss of reinforced concrete structures is the corrosion phenomenon. Thereby, taking into account the local effects of the steel/concrete interface is of primary importance to predict properly the response of corroded reinforced concrete structures. A multifiber-based model including the steel/concrete interface is proposed. This interface model allows taking into consideration the bond strength variation due to corrosion. Such an approach leads to reasonable computational costs which a powerful feature of the model. A numerical study of beams already studied in the French project « benchmark des poutres de la Rance » is proposed in order to show the efficiency and reliability of the proposed model. DEWEY : 624 ISSN : 1964-8189 En ligne : http://www.tandfonline.com/doi/abs/10.1080/19648189.2012.667990