Documents disponibles écrits par cet auteur

Moment Redistribution in continuous steel-concrete composite beams with compact cross section / Natalino Gattesco in Journal of structural engineering, Vol. 136 N° 2 (Fevrier 2010) 

Public ISBD [article]  in Journal of structural engineering > Vol. 136 N° 2 (Fevrier 2010) . - pp. 193-202 Titre : Moment Redistribution in continuous steel-concrete composite beams with compact cross section Type de document : texte imprimé Auteurs : Natalino Gattesco, Auteur ; Lorenzo Macorini, Auteur ; Massimo Fragiacomo, Auteur Année de publication : 2011 Article en page(s) : pp. 193-202 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Composite  beams  Concrete  Steel  Continuous  beams  Bending  moments  Nonlinear  analysis  Finite-element  method Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : The paper investigates the design of continuous steel-concrete composite beams with compact cross section using the elastic analysis with limited redistribution. The permissible moment redistribution which satisfies the requirements of the ultimate limit state (collapse) and serviceability limit state (crack width in the concrete slab) was computed. An advanced finite element program accounting for all mechanical nonlinearities and time-dependent phenomena (creep and shrinkage of concrete) was used. An extensive parametric analysis aimed to determine the influence of several geometrical parameters on the permissible moment redistribution was carried out on propped cantilevers and fixed-end beams. The analyzed parameters include the shape of the steel profile, the ratio between the depths of concrete slab and steel beam, the steel to concrete area ratio, and the reinforcement percentage of the concrete slab. The analysis was limited to compact steel sections (AISC 360-05) or class 1 steel sections (Eurocode 3) and low ductility reinforcing steel (elongation at maximum load εru = 2.5%). The moment redistribution domain which satisfies the rotation compatibility in the critical sections, due to the attainment of the rupture of the reinforcement or the local buckling of the steel profile, and the control of cracking (<0.3 mm) in service was evaluated and compared with the limits recommended by current codes of practice. A proposal for the allowable moment redistribution domain according to the limits of the study was given. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v136/i2/p193_s1?isAuthorized=no [article] Moment Redistribution in continuous steel-concrete composite beams with compact cross section [texte imprimé] / Natalino Gattesco, Auteur ; Lorenzo Macorini, Auteur ; Massimo Fragiacomo, Auteur . - 2011 . - pp. 193-202. Génie Civil Langues : Anglais (eng) in Journal of structural engineering > Vol. 136 N° 2 (Fevrier 2010) . - pp. 193-202 Mots-clés : Composite  beams  Concrete  Steel  Continuous  beams  Bending  moments  Nonlinear  analysis  Finite-element  method Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : The paper investigates the design of continuous steel-concrete composite beams with compact cross section using the elastic analysis with limited redistribution. The permissible moment redistribution which satisfies the requirements of the ultimate limit state (collapse) and serviceability limit state (crack width in the concrete slab) was computed. An advanced finite element program accounting for all mechanical nonlinearities and time-dependent phenomena (creep and shrinkage of concrete) was used. An extensive parametric analysis aimed to determine the influence of several geometrical parameters on the permissible moment redistribution was carried out on propped cantilevers and fixed-end beams. The analyzed parameters include the shape of the steel profile, the ratio between the depths of concrete slab and steel beam, the steel to concrete area ratio, and the reinforcement percentage of the concrete slab. The analysis was limited to compact steel sections (AISC 360-05) or class 1 steel sections (Eurocode 3) and low ductility reinforcing steel (elongation at maximum load εru = 2.5%). The moment redistribution domain which satisfies the rotation compatibility in the critical sections, due to the attainment of the rupture of the reinforcement or the local buckling of the steel profile, and the control of cracking (<0.3 mm) in service was evaluated and compared with the limits recommended by current codes of practice. A proposal for the allowable moment redistribution domain according to the limits of the study was given. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v136/i2/p193_s1?isAuthorized=no

A novel hybrid system with RC-encased steel joists / Claudio Amadio in European journal of environmental and civil engineering, Vol. 15 N° 10 (Octobre 2011) 

Public ISBD [article]  in European journal of environmental and civil engineering > Vol. 15 N° 10 (Octobre 2011) . - pp. 1433-1463 Titre : A novel hybrid system with RC-encased steel joists Titre original : Un nouveau système hybride composé de poutres en treillis d’acier noyées dans le béton Type de document : texte imprimé Auteurs : Claudio Amadio, Auteur ; Lorenzo Macorini, Auteur ; Sveva Sorgon, Auteur Année de publication : 2012 Article en page(s) : pp. 1433-1463 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Composite  structures  RC  encased  steel  joist  Beam-to-column  connections  Shear  resistance  mechanism  Analytical  models  for  shear  and  bending  resistance Résumé : The paper presents the main results of an experimental and numerical study on a novel structural frame system, which employs RC encased steel joist beams and columns. An accurate 3D numerical model has been used to represent the resistance mechanisms in beams and beam-to-column connections. Experimental and numerical outcomes have been employed to develop suitable analytical models to be used in practical design. In particular, the beam flexural response has been investigated, providing a simple relationship for the flexural rigidity at different load levels. Capacity models have been then proposed for the bending and shear resistance of partially and fully-encased beams, and for exterior beam-to-column joints. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/article.jsp?articleId=17024 [article] A novel hybrid system with RC-encased steel joists = Un nouveau système hybride composé de poutres en treillis d’acier noyées dans le béton [texte imprimé] / Claudio Amadio, Auteur ; Lorenzo Macorini, Auteur ; Sveva Sorgon, Auteur . - 2012 . - pp. 1433-1463. Génie Civil Langues : Anglais (eng) in European journal of environmental and civil engineering > Vol. 15 N° 10 (Octobre 2011) . - pp. 1433-1463 Mots-clés : Composite  structures  RC  encased  steel  joist  Beam-to-column  connections  Shear  resistance  mechanism  Analytical  models  for  shear  and  bending  resistance Résumé : The paper presents the main results of an experimental and numerical study on a novel structural frame system, which employs RC encased steel joist beams and columns. An accurate 3D numerical model has been used to represent the resistance mechanisms in beams and beam-to-column connections. Experimental and numerical outcomes have been employed to develop suitable analytical models to be used in practical design. In particular, the beam flexural response has been investigated, providing a simple relationship for the flexural rigidity at different load levels. Capacity models have been then proposed for the bending and shear resistance of partially and fully-encased beams, and for exterior beam-to-column joints. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/article.jsp?articleId=17024