Abstract
The paper is intended as a study on simplification of joins of single-layer trusses composed of twisted H-shaped steel members. This kind of strucuture adopts friction type H.T.B. and such connections can possibly be simplified by omitting the flange or web splice plates because the major stress in the truss is axial one. However, the existence of the bending moments and the shear forces in real structures requires the correct evaluation of the mechanism of stress transferring. To do this, a number of connections of different types are tested under shearbending loads and the experimental results are analyzed. Also, the buckling tests are carried out regarding twisted Hshaped steel members with different connection types at the ends. This test elucidates the influences of the connection types on the buckling strength, which can also be estimated by adopting the potential energy method, considering the rotational rigidity of the connection.
