METHOD TO ERECT REINFORCED MASONRY ARCH WITH TIGHTENING Russian patent published in 2011 - IPC E04B1/32 

FIELD: construction.

SUBSTANCE: method includes laying support elements reinforced with frame rods. Afterwards arch branches are laid from both support elements with arrangement of strengthening spatial reinforcement frame. Longitudinal rods of this frame are pulled through holes of bricks, and their ends are anchored in support elements. Prior to laying of support elements, longitudinal tightening rods are laid onto previously arranged flooring. Then by turns from ends of longitudinal tightening rods to their middles, bricks are threaded on them with holes with further closing of their ends into holes of support elements bricks with concrete. The arch is laid using bricks, which have partial cut down to wedge shape. Support elements are laid on edge in vertical rows with bonding of longitudinal seams. After laying of arch, tightening rods are pre-stressed by means of arch loading. Then bricks threaded onto tightening rod are used to lay the brace on fine-grained concrete and are maintained until this concrete gains strength. Then arch is unloaded, suspensions are arranged, and flooring is disassembled.

EFFECT: increased load-carrying capacity, stability, stiffness, crack resistance and fire resistance.

6 dwg