SYSTEM TO ATTACH BOARD OF BALLAST-FREE RAILWAY BRIDGE FLOOR TO LONGITUDINAL BEAM OF BRIDGE SPAN Russian patent published in 2011 - IPC E01D19/12 

FIELD: construction.

SUBSTANCE: available system for attachment of ballast-free railway bridge floor board to a longitudinal beam of the bridge span, comprising a board of the ballast-free railway bridge floor attached to the upper shelf of the longitudinal beam of the bridge span, and an inner layer arranged between them, additionally includes plates hingedly joined with each other into triangular levers and arranged between the board of ballast-free railway bridge floor and the upper shelf of the longitudinal beam of the bridge span, and each plate has a common point of fixation with the neighbouring plate to the upper shelf of the longitudinal beam of the bridge span or to the plate of the bridge floor, at the same time the inner layer is formed with discrete elements, every of which is arranged between long lateral sides of neighbouring plates at the side of their fixation to the upper shelf of the longitudinal beam of the bridge span.

EFFECT: increased durability of ballast-free bridge floor and inner layer between plates of ballast-free bridge floor and the longitudinal beam of the bridge span.

6 cl, 2 dwg