METHOD OF COMPLETE RECOVERY OF SERVICEABILITY OF DANGEROUS COLUMN REINFORCED CANTILEVER TAKING UP BEARING REACTIONS OF ADJACENT CRANE GIRDERS Russian patent published in 2013 - IPC B66C7/00 

FIELD: transport.

SUBSTANCE: invention relates to recovery of structures of industrial and civil buildings, primarily, heat and power plants. Prefabricate casing is produced at metalworks consisting of channel-like bent prefabricated elements with aligned holes in flanges and connection sheets following the cantilever outer surface, and retainer with holes at its brackets for casing suspension. Concrete damaged protective layer is removed from corroded column outline and finished prefabricated casing elements are transferred into the shop. Retainer is installed so that its ends extend beyond column sides to install casing bottom part. Casing upper part is mounted on aligning coaxial holes in casing tip and bottom flanges to joint said edges by bolts. Concrete pipelines are connected to casing pipes to force fine expanding concrete via said pipes into casing "from bottom-to-top" to integrate said casing and said column. At cementation, dangerous cantilever is squeezed by the casing on all sides, prestressed to render the cantilever an integral concrete tube of recovered serviceability.

EFFECT: complete recovery of column serviceability.

4 dwg