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Sealing protection structure for road bridge expansion device

A technology of telescopic devices and protective structures, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of increased safety hazards for maintenance workers, open circuit construction, uneven road surface temperature, etc., so as to reduce daily maintenance and cleaning work, improve damping and reduce The vibration function and the effect of reducing the impact of car jumping

Active Publication Date: 2014-04-02
AVIC BEIJING INST OF AERONAUTICAL MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the existing road bridge expansion devices are modular road bridge expansion devices. The sealing rubber belt of the expansion device is easy to age and needs to be replaced frequently. The deformation of different parts is also different, which brings many difficulties to the replacement of the sealing rubber belt, the replacement period is long, and the circuit breaker construction is required
Secondly, the daily maintenance of special-shaped steel expansion devices requires frequent cleaning of debris accumulated between the joints, which not only increases the maintenance workload, but also increases the safety hazards of maintenance workers

Method used

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  • Sealing protection structure for road bridge expansion device
  • Sealing protection structure for road bridge expansion device
  • Sealing protection structure for road bridge expansion device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Such as figure 1 , special-shaped steel 2 adopts "F" steel, and the expansion device composed of special-shaped steel 2 and 5 and sealing rubber belt 3 is filled with elastic filling material 4. Special-shaped steel 2 and 5 are embedded in the top of bridge beam body 1 and 6, and the Expansion joints are formed on 1 and 6, and the sealing rubber belt 3 is embedded on the special-shaped steel 2 and 5 on both sides. The upper part of the sealing rubber belt 3 forms a V-shaped space, and the elastic filling material 4 is placed in the V-shaped space formed on the upper part of the sealing rubber belt 3. , flush with the top surfaces of the bridge girders 1 and 6, and the elastic filling material 4 and the special-shaped steel 2 and 5 are bonded together.

[0017] The elastic filling material 4 is polysulfide sealant, which is filled into the expansion joint and vulcanized naturally into an elastic body.

Embodiment 2

[0019] Below in conjunction with the embodiment schematically provided of accompanying drawing, describe the present invention in detail, wherein:

[0020] Such as figure 2 The special-shaped steel 2 adopts "E"-shaped steel, and the telescopic device composed of the special-shaped steel 2 and 5 and the sealing rubber belt 3 is filled with elastic filling material 4. The special-shaped steel 2 and 5 are embedded in the top of the bridge beam body 1 and 6. Expansion joints are formed on 1 and 6, and the sealing rubber belt 3 is embedded on the special-shaped steel 2 and 5 on both sides. The upper part of the sealing rubber belt 3 forms a V-shaped space, and the elastic filling material 4 is placed in the V-shaped space formed on the upper part of the sealing rubber belt 3. , flush with the top surfaces of the bridge girders 1 and 6, and the elastic filling material 4 and the special-shaped steel 2 and 5 are bonded together.

[0021] The elastic filling material 4 is silicone s...

Embodiment 3

[0023] Below in conjunction with the embodiment schematically provided of accompanying drawing, describe the present invention in detail, wherein:

[0024] Such as image 3 The special-shaped steel 2 adopts "C" steel, and the expansion device composed of the special-shaped steel 2 and 5 and the sealing rubber belt 3 is filled with elastic filling material 4, and the special-shaped steel 2 and 5 are embedded in the top of the bridge beam body 1 and 6. Expansion joints are formed on 1 and 6, and the sealing rubber belt 3 is embedded on the special-shaped steel 2 and 5 on both sides. The upper part of the sealing rubber belt 3 forms a V-shaped space, and the elastic filling material 4 is placed in the V-shaped space formed on the upper part of the sealing rubber belt 3. , flush with the top surfaces of the bridge girders 1 and 6, and the elastic filling material 4 and the special-shaped steel 2 and 5 are bonded together.

[0025] The elastic filling material 4 is polyurethane se...

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Abstract

The invention belongs to the technical field of bridge expansion devices, and relates to a sealing protection structure for a road bridge expansion device. The expansion device consisting of deformed steel and a sealing rubber belt is full of an elastic filling material; the deformed steel is embedded into the upper top of a bridge beam body; an expansion joint is formed on the beam body; the sealing rubber belt is clamped on the deformed steel on both sides; a V-shaped space is formed on the upper part of the sealing rubber belt; the elastic filling material is placed into the V-shaped space formed on the upper part of the sealing rubber belt, and is flush with the upper top surface of the bridge beam body; the elastic filling material is bonded together with the deformed steel; the filling material is a high polymer material, and is vulcanized into an elastomer in a natural state. Due to the adoption of the sealing protection structure for the road bridge expansion device, the service life of the road bridge expansion device is prolonged, the maintenance difficulty of the road bridge expansion device is lowered, the construction period is shortened, the road smoothness is improved, the influence of jumping is lowered, and the service life of a bridge is prolonged.

Description

technical field [0001] The invention belongs to the technical field of bridge expansion devices, and relates to a sealing protection structure of a road bridge expansion device, and is especially suitable for the maintenance of a newly modeled digital road bridge expansion device and a road bridge expansion device with a damaged sealing rubber belt. Background technique [0002] Most of the existing road bridge expansion devices are modular road bridge expansion devices. The sealing rubber belt of the expansion device is easy to age and needs to be replaced frequently. The deformation of different parts is also different, which brings many difficulties to the replacement of the sealing rubber belt, the replacement period is long, and the circuit breaker construction is required. Secondly, the daily maintenance of special-shaped steel expansion devices requires frequent cleaning of debris accumulated in the gaps, which not only increases the maintenance workload, but also inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/06
Inventor 蔺艳琴王君瑾谭华青汤怀国高利杰王子涵
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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