COMPOSITE LAMINATED BEAM Russian patent published in 2020 - IPC E04C3/29 

FIELD: construction.

SUBSTANCE: invention relates to the field of low-height construction and can be used as beams of floors and coatings of residential and public buildings. Composite beam comprises glued stack of boards with curvilinear recess of annular section, filled with hardening composition. Curved sampling is made in the form of arch along trajectory of main compressing stresses, filled with concrete polymer or wood polymer on expanding binder and reinforced with spiral-shaped fittings with variable pitch decreasing to supports. Arches with bases at ends of beam rests through lower board on additional plate entering inside section of arch recess. In addition, the beam can be reinforced along the trajectory of the main tensile stresses by mutually crossing flexible rods connecting the beam diagonal angles.

EFFECT: high strength, bearing capacity, reduced material consumption.

1 cl, 5 dwg