| Title |
Evaluation on the Design In-plane Bending Strength for Branch-rotated T-joints with Square Hollow Structural Sections |
| Authors |
Park Keum-Sung ; Lee Sang-Sup ; Bae Kyu-Woong |
| Keywords |
Branch-rotated ; Flange Failure Mode ; Deformation Limit ; T-joint ; Yield Line Theory Model |
| Abstract |
The object of this paper is to evaluate the in-plane design strength T-joints made of cold-formed square hollow steel sections. The T-joints had the configuration that a branch member was oriented at 45 degrees to the main chord in the plane. This study focused on the branch-rotated T-joints governed by main chord flange failure mode among previous studies. Based on the test results of the branch-rotated T-joint in square hollow sections, the deformation limit was found as 1%B for 16.7≤2γ(=B/T)≤33.3 and 0.53≤β(=b1/B)≤0.71. Existing strength formulae for original T-joint were investigated to be main chord flange failure for the branch-rotated T-joint, and the new proposed design formula was based on yield line theory model. Finally, There is a reasonably good agreement between the ultimate strength predicted using this formula and that determined experimentally. |