A caulking device for bridge steel expansion joints

Abstract

The invention provides a caulking device for a bridge profile steel expansion joint. A pair of profile steel serves as mirror images for each other to be arranged on the two sides of the expansion joint. The two ends of a sealing strip are embedded in grooves, and the middle of the sealing strip is lower than the two ends. The caulking device capable of stretching and retracting in the length direction of a bridge is arranged in a joint groove. The caulking device comprises a caulking lining strip and a sealant waterproof layer. The caulking lining strip is elastic, the two vertex angles of the caulking lining strip are clamped in the grooves in the two sides, and the outer side wall of the caulking lining strip is fixed to the inner side wall of the joint groove. A gap is formed between the bottom of the caulking lining strip and the groove bottom of the joint groove. The top face of the caulking lining strip is an externally-protruding cambered face. The sealant waterproof layer is elastic and is arranged above the caulking lining strip, the cross section of the sealant waterproof layer is in the shape with the two ends bigger than the middle portion, and the two ends of the sealant waterproof layer are tightly connected with the profile steel on the two sides. The bottom face of the sealant waterproof layer is an internally-recessed cambered face, and the bottom face of the sealant waterproof layer is tightly attached to the top face of the caulking lining strip.

Description

technical field [0001] The invention relates to a caulking device for bridge-shaped steel expansion joints. Background technique [0002] The presence of bridge and culvert expansion joints makes it possible to accommodate displacements and linkages between the superstructure caused by vehicle loads and bridge construction materials. Steel single-slit expansion joints and modular expansion joints are the two most widely used types of bridge expansion joints. Once the expansion joint is destroyed, it will not only affect the driving comfort and safety, but also greatly shorten the service life of the bridge and culvert. [0003] Due to the special structure of the bridge steel expansion joints, it is easy to accumulate gravel and debris, causing the failure of the steel expansion joints; at the same time, it is exposed to the harsh environment of water, dust, and corrosive deicing chemicals for a long time. The erosion and damage caused to the expansion joints and the subst...

AI Technical Summary

Problems solved by technology

Once the expansion joint is destroyed, it will not only affect the driving comfort and safety, but also greatly shorten the service life of the bridge and culvert

[0003] Due to the special structure of the bridge steel expansion joints, it is easy to accumulate gravel and debris, causing the steel expansion joints to fail. At the same time, they are exposed to the harsh environment of water, dust, and corrosive deicing chemicals for a long time. The erosion and damage caused to the expansion joints and the substructure will also have a serious impact on the bridge deck pavement and the overall structure of the bridge in the long run

At the same time, frequent pointing, cleaning, and maintenance are required during the operation of section steel expansion joints, which is difficult and inefficient under heavy traffic conditions

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