Behaviour of welded T-end connection to rectangular hollow section (RHS) in axial tension

This paper presents the results of an experimental investigation of the behaviour of T-end connections welded to rectangular hollow section (RHS) members subjected to axial tension. A total of 19 specimens were tested to failure. Parameters considered for the investigation were the tube size and the cap plate thickness. The cleat plate thickness was kept constant for all tests. The cleat plate orientation relative to the tube was investigated and was found to affect the joint strength. There was evidence of shear lag taking place. The test results also revealed that the use of very thick cap plates (more than 20 mm) does not lead to increased joint capacity. The yield line analysis was used to predict the failure loads and a comparison is made with the test results.