Civil Engineering Association

A simplified method for flexural capacity assessment of circular RC cross-sections - from ScienceDirect

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Edoardo Cosenzaa, Carmine Galassoa, Corresponding Author Contact Information, E-mail The Corresponding Author and Giuseppe Maddalonib

a Dipartimento di Ingegneria Strutturale, Università degli Studi di Napoli Federico II, via Claudio 21, 80125, Naples, Italy

b Dipartimento per le Tecnologie, Università degli Studi di Napoli Parthenope, Centro Direzionale isola C4, 80143, Naples, Italy
Received 19 August 2010;
revised 17 November 2010;
accepted 1 December 2010.
Available online 5 January 2011.

Abstract

A simplified method for the assessment of bending moment resistance for reinforced concrete (RC) members with circular cross-sections is presented. In the proposed method longitudinal rebars arrangement is replaced with a thin steel ring equivalent to the steel total area; moreover, according to modern codes, simplified stress–strain relationships for concrete and reinforcing steel are used.

The performed analyses demonstrate that the value of flexural capacity determined by the proposed approach, is very close to the results obtained by applying rigorous methods based on analytical and numerical algorithms.

The study also proves that in members subjected to bending moment without axial load, the flexural strength depends on the geometry of the section (i.e. radius and concrete cover) and on mechanical ratio of steel reinforcement by a very simple formula.


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Hi check out this link, the paper as a sligthly different name but is from the same authors
and i think it as the same content.

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