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Behavior of Confined Concrete Columns under Axial Load and Flexure
Sixteen large size reinforced concrete specimens were tested under combined axial force and flexure. The research program investigated the influence of several variables on the behavior of concrete columns confined with rectilinear ties. Variables considered included: (1) distribution of longitudinal and lateral steel (steel configuration), (2) level of axial load, (3) spacing of ties, and (4) amount of lateral steel. Four confined concrete models available in the literature were used to predict the experimental results. Only one analytical model, proposed by Sheikh and Uzumeri, provided consistent results. This model was modified to include the effects of strain gradient and the level of axial load. Predictions from the modified model yielded excellent comparisons with the experimental results.
Behavior of Confined Concrete Columns under Axial Load and Flexure
Sixteen large size reinforced concrete specimens were tested under combined axial force and flexure. The research program investigated the influence of several variables on the behavior of concrete columns confined with rectilinear ties. Variables considered included: (1) distribution of longitudinal and lateral steel (steel configuration), (2) level of axial load, (3) spacing of ties, and (4) amount of lateral steel. Four confined concrete models available in the literature were used to predict the experimental results. Only one analytical model, proposed by Sheikh and Uzumeri, provided consistent results. This model was modified to include the effects of strain gradient and the level of axial load. Predictions from the modified model yielded excellent comparisons with the experimental results.
Behavior of Confined Concrete Columns under Axial Load and Flexure
C. C. Yeh (author) / S. A. Sheikh (author)
1988
337 pages
Report
No indication
English
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