Quick Repair Method of Existing Expansion Joints in Railway Concrete Bridges

[0031] will now refer to Figure 1-5 A preferred embodiment of the present invention will be described in detail. in, figure 1 It is a structural schematic diagram of a railway bridge expansion joint repaired according to a preferred embodiment of the present invention.

[0032] A rapid repair method for existing expansion joints of railway concrete bridges, comprising the following steps: a. removing residual water-stop rubber strips; b. removing scum, floating soil, oil stains, Rust and other dirt and rubbish, then dry; c, according to the condition of the beam end and the width of the beam gap, select the bottom lining and side lining, install and position the bottom lining and side lining, and the bottom lining is composed of multiple sections of 2-3m Splicing of long plate-shaped or rod-shaped materials; d. Spraying the primer: the primer should be sprayed evenly, without accumulation and not exposed to the bottom surface; e. Pouring repair materials: after the primer ...

[0036] Next, refer to figure 1 Another preferred embodiment of the present invention will be described in detail. A quick repair method for existing expansion joints of railway concrete bridges, comprising the following steps:

[0037] a. Clearance of the failed existing expansion joints: The failure of the existing expansion joints of high-speed railway bridges mainly manifests in the shedding and peeling of the water-stop rubber strips, the blockage of the drainage channels, and cannot be repaired and replaced. Therefore, the quick repair must first remove the original water-stop rubber strip; for the ballasted track, the ballast retaining cover plate must also be removed.

[0038] b. Cleaning and drying the bonding base surface: the treatment of the base surface is the process of removing scum, floating soil, oil stains, rust and other dirt and garbage on the exposed surface of the concrete base surface and metal edge beams, and drying them , special attention should be ...