WIT Press


Comparison Of A Truss Model For Confinement With UBC And NZS Requirements

Price

Free (open access)

Paper DOI

10.2495/CMEM970641

Volume

17

Pages

11

Published

1997

Size

901 kb

Author(s)

Panagis G. Papadopoulosv & Hans C. Xenidis

Abstract

A truss model with structural instability, recently proposed for the confinement of concrete columns, is compared with the requirements of Uniform Building Code and New Zealand Standards, as regards the amount and spacing of transverse reinforcement. The truss model is found in a satisfactory approximation with the UBC. Whereas the NZS require a larger amount of transverse reinforcement, by assuming that this compensates the ductility loss due to a possible heavy axial compression. ^Introduction The last twenty-five years, a lot of test results and empirical formulae, based on them, have been published, concerning the confinement of concrete columns [1, 2, 5-7]. The above have been taken into account in the formulation of requirements of various seismic codes [3, 8]. Recently, a theoretical truss model has

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