Limit Analysis of Reinforced Concrete Beams Subjected to Pure Torsion
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Volume 123, Issue 1
Abstract
A limit analysis method for predicting the torsional strength of reinforced concrete beams is introduced in this paper. This method uses the modified Coulomb-Mohr failure criterion as the constitutive law of concrete, and assumes the plastic flow of concrete after yielding to be associated with its failure surface. A generalized formulation for energy dissipation rate along a yield line in accordance with the failure criterion as well as the upper-bound method are employed in this research. The ultimate strength of reinforced concrete beams subjected to pure torsion is then predicted by the work equation based upon the energy dissipation rate and the permissible failure mechanism at the ultimate state. The theoretical torsional strengths are compared with the existing experimental results and they appear to be in good agreement.
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Published In
Journal of Structural Engineering
Volume 123 • Issue 1 • January 1997
Pages: 86 - 94
Copyright
Copyright © 1997 American Society of Civil Engineers.
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Published online: Jan 1, 1997
Published in print: Jan 1997
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