Stress-block parameters for unconfined and confined concrete based on a unified stress-strain model / Madhu M. Karthik in Journal of structural engineering, Vol. 137 N° 2 (Fevrier 2011)  

Stress-block parameters for unconfined and confined concrete based on a unified stress-strain model [texte imprimé] / Madhu M. Karthik, Auteur ; Mander, John B., Auteur . - 2011 . - pp. 270-273.
Génie Civil
Langues : Anglais (eng)
in Journal of structural engineering > Vol. 137 N° 2 (Fevrier 2011) . - pp. 270-273

Mots-clés :	Concrete Stress strain blocks Confined concrete Moment curvature
Index. décimale :	624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes
Résumé :	Equations to obtain equivalent rectangular stress-block parameters for unconfined and confined concrete are derived for rapid (hand) analysis and design purposes. To overcome a shortcoming of existing commonly used stress-strain models that are not easy to integrate, a new stress-strain model is proposed and validated for a wide range of concrete strengths and confining stresses. The efficacy of the equivalent rectangular stress-block parameters is demonstrated for hand calculations in predicting key moment-curvature results for a confined concrete column. Results are compared with those obtained from a computational fiber-element analysis using the proposed stress-strain model and another widely used existing model; good agreement between the two is observed.
DEWEY :	624.17
ISSN :	0733-9445
En ligne :	http://ascelibrary.org/sto/resource/1/jsendh/v137/i2/p270_s1?isAuthorized=no