Experimental Study on Strength of Corner Connections of Cantilever Frame Structure

Abstract

For convenience in loading long cargos, the decks of heavy cargo carriers are mostly supported by frames of cantilever. As this construction is statically determinate, sufficient care must be paid in designing to the strength of corner connections of this structure. The results of an investigation into this problem are summarized as follows: (1) The effective breadth Be of cantilever deck can be expressed as follows with span l: B_e=0.35l (l/B≦2) where B:1 trans. web space (2) Stiffeners and brackets are more effective when they are inserted in principal stress direction, that is, this method reduces possibility of local buckling and increases ultimate strength. (3) As for the type of the joint, it seems that ordinary types are superior to straight type from the view point strength. However, it is also considered that the strength of the straight type can be increased by putting a bracket on the cross point.