Open AccessThe method of analysis of a reinforced concrete section under bending in the post-yield range
Author(s) -
Jacek Korentz
Publication year - 2013
Publication title -
budownictwo i architektura
Language(s) - English
Resource type - Journals
eISSN - 1899-0665
pISSN - 2544-3275
DOI - 10.35784/bud-arch.2182
Subject(s) - spall , structural engineering , plastic hinge , buckling , concrete cover , materials science , bending , reinforced concrete , ductility (earth science) , curvature , yield (engineering) , deformation (meteorology) , bending moment , reinforcement , hinge , reinforced solid , cover (algebra) , composite material , engineering , geometry , mathematics , creep , mechanical engineering
Predicting the behavior of plastic hinges subjected to large inelastic deformations caused by extreme loads such as earthquakes plays an important role in assessing maximum stable deformation capacities of framed concrete structures. This paper presents an analytical procedure for analysing the behaviour of a reinforced concrete section under bending in the post-yield range. The following stages of section behaviour are defined as the uncracked; first cracked; yielding; cover crushing; cover spalling; buckling of bars; and limit stages. The relationship between the moment and curvature in these stages, including the effects of concrete confinement, the spalling of the concrete cover, and the inelastic buckling of the reinforced bars, are considered. The results obtained from analytical calculations have are compared to the results obtained from a computer analysis. The presented method makes it possible to estimate the ductility of reinforced concrete members with various longitudinal and transverse reinforcement.