BEAM WITH THE ALTERNATE- CORRUGATED WALL

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Invention relates down the building, in particular to the girder constructions of industrial and civil buildings and construction. Beam consists of compressed and tension chords (1, 2), connected by the transverse- corrugated wall (3). Step and height of the corrugations of wall (3) change along the length beam in accordance with the shear diagrams and bending moments. Corrugations with a relatively frequent step and a high altitude are concentrated in the [priopornykh] sections, where intensive transverse forces act. A decrease of height and an increase in the step of the corrugations along the length of beam (“damping” of corrugation) occurs in proportion to reduction in the transverse forces and growth of the bending moments. Corrugations with the relatively rare step and by the smallest height are located in the middle section of the beam, where the intensive bending moments act. The separately undertaken corrugation on the height of wall (3) has constant section. Technical result consists before reduction in the material consumption of girder constructions and increase in their bearing capacity. 8 [z].[p]. of formula., 14 illus.