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Vol. 24 No. 40 (2015)

Papers

Strain method for doubly reinforced rectangular beams design

https://doi.org/10.19053/01211129.4024

Published 2015-09-10

  • Luis Rafael Prieto-Serrano

Luis Rafael Prieto-Serrano
Universidad Pedagógica y Tecnológica de Colombia

Abstract

The compressed steel in a doubly reinforced beam improves ductility, reduces immediate and long-term deflections, it is available to support the tension in sections under reversal stress, and in low-height beams, it increases strength. With the expected strain as a measure of the section ductility, the paper proposes a direct methodology to determine the necessary compression quantities and tension reinforcement. It finds that the most efficient sections are those for which the tension reinforcing strain is 0.005.

Keywords

beams design, doubly reinforced beam, ductility, strain, structural concrete

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References

  • Committee ACI 318–American Concrete Institute, Building Code Requirements for Structural Concrete (ACI 318-02) and Commentary (ACI 318R-02), Farmington Hills, Michigan, American Concrete Institute, 2002, pp. 85-118.
  • Asociación Colombiana de Ingeniería Sísmica, “Título C – Concreto estructural”. En Reglamento Colombiano de Construcción Sismo Resistente - NSR-10, Bogotá, Colombia, Asociación Colombiana de Ingeniería Sísmica, 2010, pp. C1-C227.
  • Asociación Colombiana de Ingeniería Sísmica, “Título C – Concreto estructural”. En Normas Colombianas de Diseño y Construcción Sismo Resistente - NSR-98, Bogotá, Colombia, Asociación Colombiana de Ingeniería Sísmica,1998, pp. C1-C588.
  • R. Park, T. Paulay, Estructuras de concreto reforzado, Tr. S. Fernández, México D.F., México: Limusa S. A., 1983.
  • Comité ACI 318–American Concrete Institute, Requisitos de Reglamento para Concreto Estructural (ACI 318S-11) y Comentario, Tr. Subcomité 318-S – American Concrete Institute, Farmington Hills, Michigan, American Concrete Institute, 2011.
  • A. Nilson, D. Darwin, C. Dolan, Design of concrete structures, McGraw-Hill, 2010.
  • O. González, O. Robles, Aspectos fundamentales del concreto reforzado, México D.F., México:Limusa S. A., 2005.
  • C. S. Whitney, “Design of reinforced concrete members under flexure or combined flexure and direct compression”, J. ACI, vol. 33, pp. 483-498, Mar.-Apr. 1937.

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