Abstract
In case of point symmetric Z-section beam, major axis is different from web axis. When the moment acts on web axis, torsional deformation occurs from the beginning and the strength is lower than critical buckling strength of the beam. In this paper, uniform tests of Z-section beams is carried out and their flexural torsional behavior is investigated. Next, we carried out numerical analysis and clarified the relation between the position of moment axis and the maximum strength. The flexural torsional behavior and the strength of Z-section beams are similar to those of channel section beams.
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