Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6751639 | Journal of Constructional Steel Research | 2016 | 13 Pages |
Abstract
An experimental investigation was conducted on circular hollow section (CHS) T-joints with convex hollow and concrete-filled steel tube (CFST) chord under axial compression. A total of 16 specimens was fabricated by hot-rolled bending the chord members into curvature with three different radii to apply axial compression force to the brace members, in which 6 specimens were tested with convex hollow chord, 6 specimens were tested with convex CFST chord, and 4 traditional CHS T-joints with straight hollow and CFST chord were also tested for comparison. The joint strengths, failure modes, axial load-vertical displacement curves, axial load-chord deformation curves and strain distribution curves of all specimens are reported. It is shown from the comparison that the ultimate strengths of the CHS T-joints with convex chord are generally larger than those of the traditional CHS T-joints with straight chord. Furthermore, the ultimate strengths of traditional CHS T-joints with straight chord are significantly enhanced by filling the concrete in the chord member only. Whereas, the enhancement of the ultimate strengths of CHS T-joints with convex chord by filling the concrete in the chord member only is quite small.
Related Topics
Physical Sciences and Engineering
Engineering
Civil and Structural Engineering
Authors
Ran Feng, Yu Chen, Chaoyang Wang,