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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Modeling of Stress-Strain Relationship and Deformability for Confined High-Strength Concrete
Author(s): H. Kinugasa, Y. Xiao, and A. Martirossyan
Publication: Special Publication
Appears on pages(s): 111-126
Keywords: confinement; deformability; high-strength concrete; performance; strain energy; stress-strain models
Abstract:Some of the most widely referenced models for stress-strain relationship of confined concrete columns with square cross section are reviewed, and the performance under monotonic compressive loading are evaluated based on a database in which compressive strength ranges from 40 to 140 MPa and yield strength of transverse reinforcement ranges from 400 to 1400 MPa. It is found that majority of the models examined can predict the strength of confined concrete reasonably well, however, the predictability to the deformation is rather low. A model for predicting deformability of confined concrete column subjected to monotonic compressive loading is proposed in terms of strain energy provided by confining reinforcement up to the peak point and the point of 85% of the maximum stress beyond the peak point. Predictions based on the strain energy are found to be in good agreement with experimental results.
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