STRUCTURE OF STRENGTHENING OF REINFORCED CONCRETE HOLLOW-CORE SLABS Russian patent published in 2017 - IPC E04G23/02 

FIELD: building.

SUBSTANCE: invention relates to the construction and, in particular, to structures of strengthening of reinforced concrete hollow-core slabs, the access to which is not possible from above, for example, floor slabs, mainly used in buildings with a roof combined. The invention is that the structure of strengthening reinforced concrete slabs has protrusions formed below the lower face of slab plane, where in the zone of slab hollows additional reinforcement is put and built-in along slab zone in above mentioned protrusions. Additional built in armature is provided with, at least, two built-in anchors, where additional built in armature has bent ends passing through openings formed in the bottom of the slab. The bent ends of the additional reinforcement are placed and built-in in slab hollows. Concrete dowels are made close to slab openings in slab hollows.

EFFECT: invention allows increasing the carrying capacity, stiffness and fracturing resistance of a plate, reducing labor costs and material consumption, and weight reducing after plates strengthening.

3 cl, 3 dwg