Waterproof device suitable for expansion joint of railway bridge of existing railway lines

Abstract

The invention discloses a waterproof device suitable for an expansion joint of a railway bridge of existing railway lines, and relates to the field of bridge expansion devices. The waterproof device comprises anchoring steel bars, anchoring profiles and a waterproof rubber band. The anchoring profiles are symmetrically arranged on the end parts of adjacent bridge bodies and are fixedly connected with the anchoring steel bars. The waterproof rubber band is connected between the symmetrically arranged anchoring profiles, and a mould cavity is formed in each anchoring profile. The opening of eachmould cavity is in a C shape, and each mould cavity is internally provided with a pressing block and a pressing plate; the waterproof rubber band comprises two connecting lug straps on the outer sides and an expansion body arranged between the two connecting lug straps, and the connecting lug straps are fixed in the mould cavities through the pressing blocks and the pressing plates to form a sealing structure with the anchor profiles. The waterproof rubber band of the waterproof device has high adaptability in stretching and deformation, good water stopping performance and high clamping force, and is not prone to falling off and convenient to maintain and replace. Thus, the service life of the bridge expansion joint is prolonged, the maintenance and replacement cost of an existing expansion joint is reduced, and the service life of beam end expansion joints is prolonged.

Description

technical field [0001] The invention relates to the field of bridge expansion devices, in particular to a waterproof device suitable for expansion joints of existing railway bridges. Background technique [0002] The elevation of the expansion joints of the existing existing railway bridges is shown in the accompanying drawings figure 2 As shown, the clamping force between the porous waterproof rubber belt and the anchor profile is small, and the ability of the porous waterproof rubber belt to adapt to the change of the gap at the beam end is weak. When the gap between the beam gap becomes larger, it exceeds the porous waterproof rubber The deformation ability of the belt, and because of the small clamping force, and the accumulation of water and dust above the waterproof rubber belt, the porous waterproof rubber belt is very easy to fall off from the cavity of the anchor profile, resulting in water leakage at the beam end. The lower part of the original porous waterproof r...

AI Technical Summary

Problems solved by technology

[0002] The elevation of the expansion joints of the existing existing railway bridges is shown in the accompanying drawings figure 2 As shown, the clamping force between the porous waterproof rubber belt and the anchor profile is small, and the ability of the porous waterproof rubber belt to adapt to the change of the gap at the beam end is weak. When the gap between the beam gap becomes larger, it exceeds the porous waterproof rubber The deformation ability of the belt, and because of the small clamping force, and the accumulation of water and dust above the waterproof rubber belt, the porous waterproof rubber belt is very easy to fall off from the cavity of the anchor profile, resulting in water leakage at the beam end

The lower part of the original porous waterproof rubber belt connecting ear is not easy to observe whether it is stuck in the anchoring cavity groove, and the upper part of the connecting ear belt is not easy to insert when it is installed from the side, especially the expansion joint under the track plate, which is not easy to operate and install. In place, it is difficult to install, and it is easy to cause the phenomenon that the installation is not in place

[0003] Therefore, it is necessary to improve the waterproof device of the existing existing ballastless track expansion joints. It is hoped that there is no need to remove the anchor profiles of the original expansion joints, and the original anchor profiles will be used as the fixed connectors of the waterproof devices to solve the problems in the existing waterproof devices. The waterproof rubber belt has the defects of poor adaptability to stretching and deformation, poor water-stop performance, low clamping force, and troublesome maintenance and replacement.

Images