Bridge expansion and contraction device with noise lowering function and expansion joint component of bridge expansion and contraction device

Abstract

The invention relates to a bridge expansion and contraction device with a noise lowering function and an expansion joint component of the bridge expansion and contraction device. The bridge expansion and contraction device with the noise lowering function comprises two oppositely-arranged expansion joint components. A gap of expansion joints is formed between the two expansion joint components. Side beams are arranged on the sides, deviating from a bridge, of transverse beams of the telescopic joint components in an overhanging manner, and an exhaust channel is formed between the upper side face of each side beam and the side face of the side deviating from the bridge in a communication manner. When wheels of a vehicle pass through the gap of the expansion joints, the wheels instantly compress air in the gap, due to the fact that the exhaust channel can exhaust a part of gas in the gap during compression, the wheels difficultly further compress air in the gap, and the phenomenon of air explosion caused by the fact that in gaps without exhaust channels at present, wheels compress the air and instantly leave, and consequently the compressed air immediately releases pressure is avoided; and in the other words, when the wheels start to compress air in the gap, the exhaust channel is used for starting exhausting, instant pressure reduction of air is avoided, and accordingly noise pollution caused by air explosion is avoided.

Description

technical field [0001] The invention relates to a bridge expansion device with noise reduction function and expansion joint components thereof. 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 of the beam end. 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 ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a bridge expansion device with noise reduction function to solve the technical problem of air explosion and noise pollution caused by vehicles passing through the expansion device of the bridge; the purpose of the present invention is also to provide an expansion joint component

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