Stress-Strain Model for Confined Concrete in Cross-Shaped Columns

Abstract:

To establish complete stress-strain curve equations for confined concrete in cross-shaped columns, we designed 7 test specimens corresponding to the usable eigenvalue range of stirrup of the cross-shaped columns. We obtained the test results of the reinforced concrete cross-shaped columns through axial compression test, got the system parameters of a stress-strain model through statistical analysis of the test data, and then established stress-strain curves for confined concrete in the cross-shaped columns. This model reflects the variation rule of the stress-strain curve of confined concrete in cross-shaped columns. Compared with the stress-strain model for confined concrete in square columns, the confined concrete in cross-shaped columns has smaller peak stress, larger peak strain, and relatively steeper descending part of curve. The research results provide theorotical basis for nonlinear analysis of cross-shaped columns.

• Periodical: Advanced Materials Research (Volumes 450-451)
• Pages: 822-826
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.450-451.822
• Online since: January 2012
• Authors: Lin Zhu Sun, Tie Cheng Wang, Fang Yang
• Keywords: Confined Concrete, Cross-Shaped Column, Stress-Strain Model

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