Easy-to-replace waterproof device applicable to existing railway bridge expansion joint

Abstract

The invention discloses an easy-to-replace waterproof device applicable to an existing railway bridge expansion joint. The waterproof device comprises anchoring ribs fixed in beam-end concrete on twosides and is characterized in that anchoring profile steel is fixed to the ends of the anchoring ribs, the lateral wall of each of the two profile steel is provided with a mounting groove, a clamp plate nut is mounted in each mounting groove in a clamped manner, a waterproof rubber belt and a pressing plate are sequentially fixed to each clamp plate nut through an anchoring bolt, each anchoring bolt penetrates the lateral walls on two sides of the corresponding pressing plate and waterproof rubber belt to be connected with the corresponding clamp plate nut, and the waterproof rubber belts aremounted between the two anchoring profile steel. The easy-to-replace waterproof device has the advantages that the waterproof rubber belts of the existing railway bridge ballastless track expansion joint can be conveniently and efficiently maintained and replaced, the replaced waterproof rubber belts are high in expansion deformation adaptability, good in waterproof performance, incapable of falling off, the service life of a bridge expansion device is prolonged, the maintenance and replacement cost of the existing expansion joint is lowered, and the service life of the beam-end expansion joint is further prolonged.

Description

technical field [0001] The invention belongs to the field of railway bridges and relates to an easily replaceable waterproof device suitable for expansion joints of existing railway bridges. Background technique [0002] The bridge expansion joint is an important accessory facility of the bridge. Its main function is to prevent rainwater or other accumulated water on the bridge deck from flowing directly into the end of the beam body, and play an important role in the water collection, drainage, and waterproof performance of the bridge end. At the same time, the necessary displacement along the bridge, across the bridge, vertical displacement and rotation of the girders on both sides must be met, and its quality and performance will directly affect the durability of the entire bridge. [0003] Years of experience in the operation of railway bridges in my country shows that there are many diseases in the expansion joints of high-speed railway bridges in operation. The diseas...

AI Technical Summary

Problems solved by technology

[0005] 1) The connection between the waterproof rubber belt and the section steel is not dense or falls off, and the aging of the rubber strip leads to serious water leakage at the expansion joint;

[0006] 2) There is no drainage system in the expansion device, and the long-term accumulation of water in the expansion device will cause accelerated corrosion of the metal components of the expansion joint;

[0007] 3) The operation time of the high-speed rail skylight is short and the safety requirements are high, which brings great challenges to the expansion joint renovation construction;

[0009] When repairing the expansion joints of the ballastless track of existing railway bridges, the normal operation of railway transportation cannot be affected, and the bridge deck pavement cannot be damaged. Generally, the maintenance of railway bridges is carried out during the skylight period of railway operation, and the daily time is about 3 hours, the operation time of the high-speed rail skylight is short, and the safety requirements are high, which brings great challenges to the expansion joint renovation construction, and the replacement efficiency of the waterproof rubber belt is low, and the replacement time is long, so the old expansion joint anchoring steel is continued Based on the above, optimize the waterproof rubber belt, improve its installation convenience, deformation adaptability, and easy replacement performance, so as to solve the shortcomings of the current expansion joints

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