Documents disponibles écrits par cet auteur

Shear strength model for steel fiber reinforced concrete beams without stirrup reinforcement / Hai H. Dinh in Journal of structural engineering, Vol. 137 N° 10 (Octobre 2011) 

Public ISBD [article]  in Journal of structural engineering > Vol. 137 N° 10 (Octobre 2011) . - pp. 1039-1051 Titre : Shear strength model for steel fiber reinforced concrete beams without stirrup reinforcement Type de document : texte imprimé Auteurs : Hai H. Dinh, Auteur ; Gustavo J. Parra-Montesinos, Auteur ; James K. Wight, Auteur Année de publication : 2012 Article en page(s) : pp. 1039-1051 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Fiber  reinforced  concrete  Steel  fibers  Shear  Diagonal  tension Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : A simple model is presented to estimate the shear strength of steel fiber reinforced concrete (FRC) beams without stirrup reinforcement. The model was developed on the basis of observations from tests of 27 large-scale beams under monotonically increased concentrated loading. Three types of hooked steel fibers were evaluated in volume fractions ranging between 0.75% (59  kg/m3 or 100  lb/yd3) and 1.5% (118  kg/m3 or 200  lb/yd3). All but one beam failed in shear either prior to or after flexural yielding. In the proposed model, shear in steel FRC beams is assumed to be resisted by shear stress carried in the compression zone and tension transferred across diagonal cracks by steel fibers. Shear carried in the compression zone is estimated by using the failure criterion for concrete subjected to combined compression and shear proposed by Bresler and Pister. The contribution from fiber reinforcement to shear strength, on the other hand, is tied to material performance obtained through standard ASTM 1609 four-point bending tests. Comparison of predicted versus experimental shear strengths for a large number of FRC beams tested in this and other investigations indicates that the proposed model is capable of predicting the shear strength of steel FRC beams with reasonable accuracy; mean and standard deviation values are 0.79 and 0.12, respectively. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v137/i10/p1039_s1?isAuthorized=no [article] Shear strength model for steel fiber reinforced concrete beams without stirrup reinforcement [texte imprimé] / Hai H. Dinh, Auteur ; Gustavo J. Parra-Montesinos, Auteur ; James K. Wight, Auteur . - 2012 . - pp. 1039-1051. Génie Civil Langues : Anglais (eng) in Journal of structural engineering > Vol. 137 N° 10 (Octobre 2011) . - pp. 1039-1051 Mots-clés : Fiber  reinforced  concrete  Steel  fibers  Shear  Diagonal  tension Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : A simple model is presented to estimate the shear strength of steel fiber reinforced concrete (FRC) beams without stirrup reinforcement. The model was developed on the basis of observations from tests of 27 large-scale beams under monotonically increased concentrated loading. Three types of hooked steel fibers were evaluated in volume fractions ranging between 0.75% (59  kg/m3 or 100  lb/yd3) and 1.5% (118  kg/m3 or 200  lb/yd3). All but one beam failed in shear either prior to or after flexural yielding. In the proposed model, shear in steel FRC beams is assumed to be resisted by shear stress carried in the compression zone and tension transferred across diagonal cracks by steel fibers. Shear carried in the compression zone is estimated by using the failure criterion for concrete subjected to combined compression and shear proposed by Bresler and Pister. The contribution from fiber reinforcement to shear strength, on the other hand, is tied to material performance obtained through standard ASTM 1609 four-point bending tests. Comparison of predicted versus experimental shear strengths for a large number of FRC beams tested in this and other investigations indicates that the proposed model is capable of predicting the shear strength of steel FRC beams with reasonable accuracy; mean and standard deviation values are 0.79 and 0.12, respectively. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v137/i10/p1039_s1?isAuthorized=no