COMBINED BEAM Russian patent published in 2021 - IPC E04C3/12 

FIELD: construction.

SUBSTANCE: invention relates to the field of construction, in particular to structures of combined I-beams. The combined I-beam includes belts of nail material, a transversely corrugated metal wall with teeth on the longitudinal edges pressed into the belts. The belts are made with curvilinear or discretely curved longitudinal mutually coordinated grooves corresponding to the geometry of the wall, and the teeth are partially or alternately bent, molded, pressed into the cavity of the curved grooves. The corrugated wall is additionally fixed with a compound placed in the curved grooves of the belts.

EFFECT: increasing the bearing capacity of the structure.

6 cl, 7 dwg