PRE-STRESSED STEEL CONCRETE BEAM Russian patent published in 2018 - IPC E04C3/294 

FIELD: construction.

SUBSTANCE: invention relates to the field of construction and can be used as beams of ceilings and coatings of residential and public buildings. Pre-stressed steel-concrete beam includes steel profiles, forming an I-section, having anchor elements, longitudinal reinforcing bars and concrete filling. Holes are formed and H-type tensioning devices are installed, supported on the wall with the possibility of rotation in two planes, in the ends of the upper part of the wall of the I-beam, a prestressed flexible reinforcing bars in two rows are fixed with a tension knot at the ends of tensioning devices.

EFFECT: technical result consists in increasing the stiffness, the total bearing capacity of the steel beam by equalizing the forces in the branches of the prestressed reinforcement.

1 cl, 5 dwg