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Can stirrups suppress size effect on shear strength of RC beams? in Journal of structural engineering, Vol. 137 N° 5 (Mai 2011)
Can stirrups suppress size effect on shear strength of RC beams? [texte imprimé] / Qiang Yu, Auteur ; Zdenek P. Bazant, Auteur . - 2011 . - pp. 607-617.
Génie Civil
Langues : Anglais (eng)
in Journal of structural engineering > Vol. 137 N° 5 (Mai 2011) . - pp. 607-617
Mots-clés : Concrete design Size effect Shear reinforcement Failure probability RC beams Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : This paper demonstrates the size effect on the shear strength of reinforced concrete (RC) beams with stirrups and does so in two separate and independent ways: (1) by fracture mechanics, based on finite-element analysis calibrated by a large beam test; and (2) by purely statistical analysis in which a newly assembled database of 234 tests is filtered to eliminate spurious size effects caused by nonuniformity of secondary influencing parameters. Both ways show that stirrups, whether minimum or heavier, cannot suppress the size effect completely, although they can mitigate it significantly for beam depth d1 m (39.4 in.), the size effect cannot be neglected.
DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v137/i5/p607_s1?isAuthorized=no
