Analytical prediction of ultimate moment and curvature of RC rectangular sections in compression

Maurizio Papia, Piero Colajanni, Marinella Fossetti, Piero Colajanni

Risultato della ricerca: Article

4 Citazioni (Scopus)

Abstract

This paper presents closed form expressions linking the ultimate bearing capacity to the ultimate curvature of rectangular RC sections subjected to axial load and bending moment acting in one of the two symmetry planes of the section. With respect to possible simplified formulations the following effects are also considered: confinement of the concrete, hardening of the longitudinal reinforcement, and presence of reinforcing bars distributed orthogonally to the neutral axis. The formulation is proposed in dimensional terms after a preliminary definition of the geometrical and mechanical parameters governing the structural response of the class of sections considered. The analytical expressions derived using the proposed approach also allow one to determine the compression level that makes the ultimate bending moment maximum as well as to evaluate the curvature corresponding to the first yielding of the principal reinforcement in tension. Comparing this value of curvature with the ultimate one, an approximate estimation of the available ductility of curvature of the section can be made. The analytical procedure is validated by comparing the results with those obtained using a typical numerical approach. Some experimental results are also considered. © 2013 Springer Science+Business Media Dordrecht.
Lingua originaleEnglish
pagine (da-a)2055-2078
Numero di pagine24
RivistaBulletin of Earthquake Engineering
Volume11
Stato di pubblicazionePublished - 2013

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Bending moments
curvature
Reinforcement
compression
moments
bending moments
Axial loads
Bearing capacity
prediction
predictions
reinforcement
Ductility
Hardening
Concretes
axial loads
formulations
structural response
ductility
bearing capacity
hardening

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology
  • Geophysics

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Analytical prediction of ultimate moment and curvature of RC rectangular sections in compression. / Papia, Maurizio; Colajanni, Piero; Fossetti, Marinella; Colajanni, Piero.

In: Bulletin of Earthquake Engineering, Vol. 11, 2013, pag. 2055-2078.

Risultato della ricerca: Article

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AB - This paper presents closed form expressions linking the ultimate bearing capacity to the ultimate curvature of rectangular RC sections subjected to axial load and bending moment acting in one of the two symmetry planes of the section. With respect to possible simplified formulations the following effects are also considered: confinement of the concrete, hardening of the longitudinal reinforcement, and presence of reinforcing bars distributed orthogonally to the neutral axis. The formulation is proposed in dimensional terms after a preliminary definition of the geometrical and mechanical parameters governing the structural response of the class of sections considered. The analytical expressions derived using the proposed approach also allow one to determine the compression level that makes the ultimate bending moment maximum as well as to evaluate the curvature corresponding to the first yielding of the principal reinforcement in tension. Comparing this value of curvature with the ultimate one, an approximate estimation of the available ductility of curvature of the section can be made. The analytical procedure is validated by comparing the results with those obtained using a typical numerical approach. Some experimental results are also considered. © 2013 Springer Science+Business Media Dordrecht.

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