Application of Sleeve Joints between Steel Beams and CFT Columns to Railway Structures

A design equation for estimating the ultimate strength of sleeve joints was presented on the basis of the experimental study. The static loading tests by using the T-shaped sleeve joint specimens were carried out in order to investigate the effects of the diaphragm and the applicability of the sleeve joints to railway structures. The test results indicate that the diaphragm affects the ultimate strength, and that the application of the proposed design method to the T-shaped sleeve joints is promising.