FIELD: construction.
SUBSTANCE: invention relates to composite beams working on bend used as bearing elements of buildings and structures. Reinforced concrete beam contains metal H-section and interconnected guncrete arched element. At that, the guncrete arch element is equipped with a piston element with a support foot entering the cavity of the guncrete arch and at the base in the lower beam of the beam. Hole of lower belt along contour can be made with lower quarter, and support foot with mating quarter. Support plate can protrude beyond the lower belt by a value two times or more exceeding ultimate deformation of the concrete.
EFFECT: technical result is an increase in the overall bearing capacity of the beam.
3 cl, 5 dwg
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