Application of Stress Box in Self-Stressing Test of Expansion Concrete Filled Steel Tube

Abstract:

In order to validate the interface concrete self-stressing method of the homemade stress box can achieve the accuracy of the traditional test methods of the strain gauge pasted on the outer wall of steel tube and make up for its shortcomings, in this article, the self-stressing of expansion concrete filled steel tubular short columns with different expansive agent dosages are tested from homemade stress boxes, and the interface concrete stresses are converted from the measured strain by the strain gauge pasted on the outer wall of steel tube. The calculation stresses are smaller than the conversion stresses because of the surface friction of rebar by comparison, but the changing trends are the same, such arrangement and test method is proved to be feasible.

• Periodical: Advanced Materials Research (Volumes 706-708)
• Pages: 530-534
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.706-708.530
• Online since: June 2013
• Authors: Chang Wu Xu, Kai Cheng Huo, Zhi Gang Ren, Rui Xiong, Tao Yang
• Keywords: Concrete-Filled Steel Tube (CFST), Expansion Concrete, Self-Stressing, Stress Box

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