Load-bearing, thin-walled, bar-shaped construction profile of square or rectangular cross-section

摘要

The load-bearing, thin-walled construction profile of closed or open, square or rectangular cross-section, which is subjected to bending and/or longitudinal force, has corner bevels to increase the buckle strength. For this purpose, the profile is constructed, given a predetermined thin-wall ratio of wall thickness (t) to profile height (a) in relation to the projection (s0) of the corner bevel to the profile height (a), in accordance with the mathematical formula (s0)/a = K.(t/a + 0.01) where K = constant in the range between 2.8 and 7 a = profile height, i.e. the length of the largest adjoining planar part s0 = projection of the corner bevel relative to the profile height t = wall thickness. i