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Titre :
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Stress-block parameters for unconfined and confined concrete based on a unified stress-strain model (2011)
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Auteurs :
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Madhu M. Karthik, Auteur ;
Mander, John B., Auteur
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Type de document :
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Article : texte imprimé
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Dans :
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Journal of structural engineering (Vol. 137 N° 2, Fevrier 2011)
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Article en page(s) :
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pp. 270-273
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Note générale :
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Génie Civil
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Langues :
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Anglais
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Index. décimale :
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624 (Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes)
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Tags :
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Concrete Stress strain blocks Confined concrete Moment curvature
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Résumé :
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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.
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DEWEY :
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624.17
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ISSN :
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0733-9445
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En ligne :
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http://ascelibrary.org/sto/resource/1/jsendh/v137/i2/p270_s1?isAuthorized=no
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