Abstract
The results of numerical and empirical analysis of a new type frame T- joints for rectangular hollow sections are presented. The butt T-joints are designed as connected by screws into bushes formed in the wall of rectangular hollow sections bars by use of a thermal drilling technology. Literature in this subject applies only to joints without additional stiffeners or T-joints with concrete filled hollow steel columns. In the paper deals with the 4 proposals of a new butt T-joints for hollow sections including additional stiffeners. Numerical analyses conducted for the designed new types of T-joints proved that the proposed joints stiffeners lead to higher capacity than in case of unstiffened joint. Experimental verification of the joints behaviour confirmed results of the numerical simulation.
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