TRUSSED GIRDER Russian patent published in 2018 - IPC E04C3/29 E04C3/11 

FIELD: construction.

SUBSTANCE: invention relates to construction, namely, to farms of coatings and ceilings of buildings and structures, to crane farms and other elements operating mainly under bending conditions. Trussed girder consists of a beam-spacer, a main yoke, including a carrier puff and racks with guides for its free movement, additional pairs of truss rods, including stabilizing puffs, freely passed through the guides in the posts of the main yoke. In this case, the stabilizing puffs on one part of the span of the grider are attached to the beam-spacer in its bearing zones, and on the other – to the bearing tightening, and have the form of broken lines inscribed in curves of variable curvature, the outlines of which are directed in the area of attachment to the carrier puff by convexity downward with the smallest radius of curvature at the points of the greatest transverse strains of the roof-beam, and in the area of attachment to the beam-spacer – convex upward within the outer dimensions of the main yoke.

EFFECT: technical result consists in reducing the material consumption of the trussed girder shank under the action of predominantly one-sided loads.

1 cl, 8 dwg