Abstract

PRIETO-SERRANO, Luis Rafael. Strain method for doubly reinforced rectangular beams design. Rev. Fac. ing. [online]. 2015, vol.24, n.40, pp.31-40. ISSN 0121-1129.

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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