METHOD FOR BRIDGE STRUCTURE RECONSTRUCTION Russian patent published in 2017 - IPC E01D22/00 

FIELD: construction.

SUBSTANCE: method of the bridge structure reconstruction includes the installation of temporary supports on temporary piles, the installation of thrust and supporting crossarms. The temporary supports are installed in pairs from different sides of the bridge structure, after which a thrust crossarm is mounted on each pair of the temporary supports across the bridge structure. Thereinafter, the through openings are drilled in a beam of the bridge structure, and then the bundles of ropes are stretched, first through the thrust crossarm, then into the through openings of the beam of the bridge structure, then through the supporting crossarm previously arranged on the ground under the beam of the bridge structure. Jacks are installed on the thrust crossarm at the points of the rope bundles output, and the supporting crossarm is pulled up with the beam resting on it. Then the existing ropes stretched in the upper slab along the entire bridge structure are strained. Then the inner surface of the lower slab of the beam is reinforced by laying rope bundles into pre-made longitudinal channels along the entire bridge structure, and then these rope bundles are strained and fixed. The thrust and supporting crossarms and the supports with the piles are dismantled.

EFFECT: reinforcing the existing span structure of the bridge.

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