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Field modification method for bridge expansion device

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

Active Publication Date: 2017-11-17
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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  • Field modification method for bridge expansion device
  • Field modification method for bridge expansion device
  • Field modification method for bridge expansion device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0030] Embodiment 2 of the method for on-site reconstruction of a bridge expansion device of the present invention: This embodiment is different from Embodiment 1 in that this embodiment is aimed at figure 2 The on-site modification of the bridge expansion device of the wave-shaped gap 8 shown, such as Figure 5 As shown, grooves 5 are cut at the positions of the wave troughs of the wave-shaped side beams 4, and the shape, depth, and size of the grooves 5 are adjusted according to needs to meet the needs of exhaust gas and smooth vehicle driving. It is required to keep the arc of the wave crest in order to reduce the impact on the wheel.

Embodiment 3

[0031] Embodiment 3 of the method for on-site reconstruction of a bridge expansion device of the present invention: This embodiment is different from Embodiment 1 in that this embodiment is aimed at Image 6 The on-site modification of the rectangular comb-teeth bridge expansion device shown, such as Figure 7 As shown, a 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 a convex arc 9 to reduce the impact on the wheel and have the effect of reducing noise.

Embodiment 4

[0032] Embodiment 4: The difference between this embodiment and the embodiment 3 is that this embodiment is aimed at Figure 8 The on-site modification of the ladder-shaped comb bridge expansion device shown, such as Picture 9 As shown, an exhaust groove 5 is processed at the connection between the teeth of the trapezoidal comb teeth, and the teeth of the trapezoidal comb teeth are trimmed into convex arcs 9 to reduce vibration and noise.

[0033] In other embodiments, the groove in the above embodiment can also be replaced with a through hole that penetrates from the upper side of the edge beam to the side of the edge beam on the side close to the gap. In this case, the through hole is used for exhaust, as opposed to Groove, this embodiment has better vehicle running comfort; the shape of the groove or the through hole can be wavy, or can be replaced with a sawtooth or other geometric or irregular shape, the groove or the through hole can be a step The groove can also be a chut...

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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 method for on-site reconstruction 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 vehicle loads, the length of the bridge will change, which will cause displacement at both ends. In order to adapt to this displacement and maintain smooth driving, it must be installed 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 ensure that the gap formed is as small as possible to make the vehicle run as smoothly as possible. Even so, it is inevitable that the vehicle will still produce when driving through the expansion joint. A lot of noise, analyze the cause of the noise. 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 w...

Claims

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Application Information

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