Test on Eccentricaly Loaded Four-Tube Concrete-Filled Steel Tubular (CFST) Laced Columns of No Yield Point

Abstract:

In order to study the characteristics about deformation and stress of four-tube concrete-filled steel tubular(CFST) laced columns of no yield point, a test with the parameter of eccentricity on two our-tube concrete-filled steel tubular(CFST) laced columns of no yield point has been finished by means of 500t press. The results of the test shows that the larger the eccentricity, the more obvious the global deformation of laced columns tends to become, and the four-tube CFST laced columns of no yield point under eccentric compression were subjected to overall bending failure and ductile failure with obvious premonition; In the meanwhile, confinement effect of main tubes away from the loading point of laced columns under eccentric compression was inapparent , while confinement effect of the two main tubes close to the loading point begain to play and increase before it was to fail, which made the characteristics about deformation and stress of the the two main tubes close to the loading point similar to the single CFST column under axial compression.

• Periodical: Applied Mechanics and Materials (Volumes 204-208)
• Pages: 4658-4663
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.204-208.4658
• Online since: October 2012
• Authors: Ran He, Xing Ping Shu, Bo Wang Chen
• Keywords: Eccentric Compression, Four-Tube Concrete-Filled Steel Tube, Laced Column, No Yield Point

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