METHOD OF BUTT BOLTED JOINT OF COMPOSITE PREFABRICATED REINFORCED CONCRETE COLUMNS Russian patent published in 2025 - IPC E04B1/38 

FIELD: construction.

SUBSTANCE: invention relates to the construction industry, specifically to the composite prefabricated and prefabricated monolithic reinforced concrete columns butt bolted connection method, intended for the construction of a prefabricated monolithic reinforced concrete beamless frame or as part of the “column-bar-filigran” system of civil and industrial buildings. Claimed method of the composite prefabricated reinforced concrete columns butt bolted connection, the superior of which is provided with a projection and in the lower part has niches (4) located at distance of 400-800 mm from its lower end to the recess, as well as cylindrical through cavities (5) made in the body of column (3), passing from its lower end to said niches (4), and the underlying column in the upper part is provided with a slot and has brought out anchor bolts (2), at which the superior assembled reinforced concrete column (3) is mounted by the lower end on the derived anchor bolts (2) of the inferior assembled reinforced concrete column (1) so that the projection of the superior assembled reinforced concrete column (3) enters the groove of the inferior assembled reinforced concrete column (1), and anchor bolts (2) enter cylindrical through cavities (5), washers (6) are installed and nuts (6) are tightened in niches (4) of superior assembled reinforced concrete column (3) on brought out through cylindrical cavities (5) anchor bolts (2), after which niches (4) are caulked with a solution.

EFFECT: increase in the building frame installation speed, reduction in the metal consumption, increase in the structure rigidity and frost resistance, absence of wet works and absence of construction formwork use, due to butt bolted connection of composite prefabricated reinforced concrete columns, providing dry joint of “column-column” interface unit.

8 cl, 4 dwg