PRESTRESSED COMPOSITE WOODEN BEAM Russian patent published in 2020 - IPC E04C3/18 

FIELD: construction.

SUBSTANCE: invention relates to beams of floors and coatings of buildings. Prestressed compound wooden beam includes a glued pack of boards, a monolithic insert, anchor rods and longitudinal prestressed rods. Monolithic insert with height not less than the height of the compressed section of the beam is taken with a design resistance exceeding the similar parameter of wood by three or more times, to the suction end of which is supported with the possibility of rotation in the middle of the plate from the spring material through the deformed lining, and to the ends of the plate prestressed rods are connected.

EFFECT: technical result is higher strength.

1 cl, 4 dwg