Experimental Verification on Bearing Capacity of Concrete-Filled Steel Tube Short Columns Based on Unified Theory

Abstract:

To verify the rationality of calculation method on unified theory of concrete - filled steel tube short columns under axial force, Experimental Study on mechanical properties of the 12 concrete -filled steel tube short columns with 7 different sections under axial force is preformed. Failure process and Failure mode of them are observed, load-displacement curves are obtained, and the influence for confinement coefficient ξ to the mechanical properties of short columns under axial load is analyzed. Based on load-displacement curves, ultimate bearing capacities of them are given. By comparison for ultimate bearing capacity obtained by testing and the bearing capacity according to unified theory, the results show both are in good agreement. Calculation method on unified theory of concrete - filled steel tube is fit for calculating ultimate bearing capacity of short columns under axial force with different sections, and the results are safe and reliable.

• Periodical: Advanced Materials Research (Volumes 163-167)
• Pages: 1999-2004
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.163-167.1999
• Online since: December 2010
• Authors: Jing Ji, Wen Fu Zhang, Hai Yan Sui
• Keywords: Concrete-Filled Steel Tube (CFST), Confinement Coefficient, Short Column, Ultimate Bearing Capacity, Unified Theory

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