Open AccessElongation and load deflection characteristics of reinforced concrete members containing plastic hinges
Author(s) -
R. C. Fenwick,
L. M. Megget
Publication year - 1993
Publication title -
bulletin of the new zealand society for earthquake engineering/nzsee quarterly bulletin
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.917
H-Index - 36
eISSN - 2324-1543
pISSN - 1174-9857
DOI - 10.5459/bnzsee.26.1.28-41
Subject(s) - hinge , plastic hinge , deflection (physics) , structural engineering , axial symmetry , elongation , ultimate tensile strength , plasticity , reinforcement , materials science , flexural strength , composite material , engineering , physics , optics
In regions, described as plastic hinge zones, in beams and columns, tensile yielding of the reinforcement through flexural action can occur in severe earthquakes. Where the beams and columns are lightly loaded, axially, member elongation can occur. Test results show that axial extensions of the order of several percent of the member depth may be expected. This deformation, which is ignored in current design practice, can have a major influence on the distribution of forces in a structure and its ability to survive without collapse. This paper describes the way in which elongation develops in plastic hinge zones together with the form of load deflection characteristics associated with the development of different types of plastic hinge zone.