| Title |
The Behavior of Gap N-joints in Cold-formed Square Hollow Sections with Connection Plate for a Tension Member |
| Authors |
Park, Keum-Sung ; Bae, Kyu-Woong ; Choi, Yun-Cheul |
| Keywords |
Connection Plate ; High Tensile Bar ; Square Hollow Sections ; The Chord Width to Thickness Ratio ; The Width Ratio ; Gap N-joints |
| Abstract |
This paper's objective is to evaluate the experimental behavior of gap N-joints made of cold-formed, square, hollow steel sections, with a connection plate as a tension member. The principal parameters for testing included the ratio of chord width to thickness, the ratio of brace width to chord width, eccentric ratio, the shape of the compression member, the branch angle, and the stiffening plate of the chord flange. The strength and failure mode were examined through the test for the gap N-joint, consisting of several parameters. Based on the results of the test, the gap N-joints were determined according to the capacity preceding the displacement of the tension, regardless of the width ratio, and the split failure mode-connected surface for a chord in joints. The strength of the gap N-joints increased proportionally as the (B/T) ratio decreased, and as the width ratio() of branch to chord increased. Particularly, (B/T) decreased as the capacity of gap N-joint increased. The results of the test were summarized for the capacity, initial stiffness, ductility, and change of the failure mode of each gap N-joint. |