BRIDGE REINFORCEMENT METHOD Russian patent published in 2006 - IPC E01D22/00 

FIELD: bridge building, particularly to reconstruct and reinforce little bridges and pipes in active railroad and motor roads.

SUBSTANCE: method involves installing removable form inside bridge opening to create reinforcement structure having shape close to bridge opening shape and filling gaps between removable form and bridge pier with concrete mix and reinforcement to form new span structure. Foundation, namely concrete base is arranged, then space between existent piers and form is filled with concrete mix to create reinforcement structure having walls integrally connected with existent piers by tie members, for instance by anchoring rods. Air gap is created between existent span structure and top of new span structure to provide free deflection of existent span structure. After strength development in concrete mix old span structure is disassembled and new road pavement is formed so that the road pavement is supported by new span structure.

EFFECT: possibility of normal bridge usage during bridge reconstruction, reduced material consumption and provision of maximal throat area of bridge opening.

3 cl, 1 dwg, 1 ex