DEVICE FOR STRENGTHENING A FLAT MONOLITHIC REINFORCED CONCRETE FLOOR SLAB Russian patent published in 2021 - IPC E04G23/00 

FIELD: construction.

SUBSTANCE: invention relates to the field of construction, in particular the field of strengthening building structures, can be used to restore the bearing capacity and serviceability of monolithic reinforced concrete flat slabs damaged by cracks of various opening widths, including through, or reduced strength of concrete, due to technological reasons, overload, and can also be used in the reconstruction of buildings. The device for strengthening a flat monolithic reinforced concrete floor slab contains an arranged system of monolithic beams. The beams are made from the lower side of the reinforced monolithic slab by concreting from the side of the upper plane of the existing slab. The main beams are supported on the support tables of the steel column straps. The secondary beams are monolithically connected with the main ones. Studs passed through the through holes in the floor slab connect the beam elements with the existing floor slab with the subsequent execution of the upper embankment. A single structural system is formed in the form of a monolithic ribbed floor with beam slabs.

EFFECT: invention makes it possible to increase the bearing capacity of a reinforced concrete slab operating on additional loads after reinforcement as a monolithic floor with beam slabs; at the same time, the issue of increasing the bearing capacity of the floor slab for punching is being resolved while maintaining the fundamental operation of the monolithic slab in the interface with the columns as a continuous structure and a horizontal disc.

1 cl, 4 dwg