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On-site modification method of bridge expansion device

A telescopic device, bridge technology, applied in the direction of bridges, bridge construction, bridge maintenance, etc., can solve the problems of air explosion noise and pollution, and achieve the effect of avoiding noise pollution and reducing impact force.

Active Publication Date: 2020-04-24
刘强 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for on-site transformation of bridge telescopic devices that have been installed on site, so as to solve the technical problem of noise pollution caused by air explosions when vehicles pass through the telescopic devices of existing bridges

Method used

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  • On-site modification method of bridge expansion device
  • On-site modification method of bridge expansion device
  • On-site modification method of bridge expansion device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0030] Embodiment 2 of the on-site transformation method of the bridge expansion device of the present invention: the difference between this embodiment and embodiment 1 is that this embodiment is aimed at figure 2 The on-site modification made by the bridge expansion device of the wave-shaped gap 8 shown, such as Figure 5 As shown, grooves 5 are respectively cut at the positions of the troughs of the wave-shaped side beams 4, and the shape, depth and size of the grooves 5 are adjusted according to the needs, which not only meet the needs of exhaust, but also meet the smooth running of the vehicle. To meet the requirements of safety, the arc of the peak position is reserved to reduce the impact on the wheel.

Embodiment 3

[0031] Embodiment 3 of the on-site transformation method of the bridge expansion device of the present invention: The difference between this embodiment and Embodiment 1 is that this embodiment is aimed at Image 6 The field modification made by the bridge telescoping device with the rectangular comb shown, such as Figure 7 As shown, the groove 5 is processed at the connection between the teeth of the comb teeth for exhaust noise reduction. At the same time, in order to reduce the impact of the end of the comb teeth on the wheel, the teeth of the comb teeth are trimmed. The comb teeth are processed into convex arcs 9 to reduce the impact on the wheels and have the effect of noise reduction.

Embodiment 4

[0032] Embodiment 4 of the on-site transformation method of the bridge telescopic device of the present invention: The difference between this embodiment and Embodiment 3 is that this embodiment is aimed at Figure 8 The field modification made by the bridge expansion device of the trapezoidal comb shown, such as Figure 9 As shown, the exhaust groove 5 is processed at the connection between the teeth of the trapezoidal comb, and the teeth of the trapezoidal comb are trimmed into convex arcs 9 to reduce shock and noise.

[0033] In other embodiments, the groove in the above embodiment can also be replaced by a through hole penetrating from the upper side of the side beam to the side of the side beam near the gap. The groove, this embodiment has better vehicle ride comfort; the shape of the groove or the through hole can be wavy, and can also be replaced with a zigzag or other geometric or special-shaped shape, and the groove or the through hole can be a step The groove can also...

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Abstract

The invention relates to a field modification method for a bridge expansion device. An exhaust channel is machined in a side beam of an existing bridge expansion device and penetrates to the upper side face of the side beam from the side face of the side, away from a bridge, of the side beam, and thus when wheels of a vehicle pass expansion joints, especially when the wheels compress air in the joints, the exhaust channel is used for discharging part of gas in the joints, the wheels can hardly compress the air in the joints further, and the air explosion phenomenon generated by the fact that according to existing joints without exhaust channels, wheels compress air and leave immediately, and compressed air releases pressure immediately is avoided; that is, the exhaust channel starts to discharge air when wheels compress air in the joints, immediate pressure reduction of air is avoided, and noise pollution caused by air explosion is avoided.

Description

technical field [0001] The invention relates to a field transformation method of a bridge expansion device. Background technique [0002] As we all know, due to temperature changes, concrete shrinkage and creep, uneven settlement of the foundation, and the influence of vehicle loads, the length of the bridge will change, resulting in displacement at both ends. In order to adapt to this displacement and maintain smooth driving, it is necessary to set Bridge expansion device, also known as expansion joint device. The bridge expansion device must not only compensate for the deformation between the two bridges, but also make the gap as small as possible to make the vehicle run as smoothly as possible. There is a lot of noise, and the reason for the noise is analyzed. On the one hand, it is the vibration caused by the direct impact of the wheel on the expansion joint. On the other hand, the wheel instantly compresses the air in the gap and decompresses it instantly, causing the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/06E01D22/00
CPCE01D19/06E01D22/00
Inventor 刘强李西清刘喆
Owner 刘强