Vibration and noise reduction method based on howling of traffic flow on elevated road outside building

Abstract

The invention provides a vibration and noise reduction method based on the howling of traffic flow on an elevated road outside a building. The method uses a noise reduction device which includes a noise monitoring unit, a computational analysis model, a processing unit and a plurality of noise reduction units arranged in an array. The method comprises the following steps: S1, monitoring the howling of traffic flow on an elevated road in real time through the noise monitoring unit, sending the howling to the computational analysis model through a data transmission unit, and establishing a data model library through the computational analysis model; S2, obtaining, by the computational analysis model,a basic noise isoline of the howling of traffic flow on the elevated road through the data model library, and establishing a space simulation model according to the noise space change trend; and S3, carrying out extraction processing on the space simulation model through the processing unit, and analyzing an distribution order of magnitude and a noise distribution gradient of the of traffic flow on the elevated road. According to the invention, the howling of traffic flow on the elevated road can be effectively processed, and the influence of noise on building users is reduced.

Description

technical field [0001] The present invention relates to the technical field of vibration reduction and noise reduction and traffic howling, and more specifically relates to a method for reducing vibration and noise based on the howling of traffic on elevated roads outside buildings. Background technique [0002] With the development of the layout of road traffic lines between cities, since many elevated roads are built around residential areas and office areas, when vehicles drive on elevated roads, they will produce a negative and low-frequency whistling noise, which is mostly Due to the periodical frequency conversion noise generated by the friction between the body and the air and the friction between the wheels and the ground during the high-speed driving of the vehicle, if the traffic flow on the elevated road increases and the peak traffic period of the road is maintained, it will have great impact on the surrounding users. influences. At present, most of the processi...

AI Technical Summary

Problems solved by technology

At present, most of the processing methods for reducing low-frequency vibration and noise in the prior art are sound-insulating materials and damping materials through the conversion of sound energy. However, when traditional materials are used to isolate sound waves and vibrations, the thickness of sound-insulating material parts The size matches the wavelength of the sound wave, that is, the longer the wavelength of the sound wave, the thicker the thickness of the sound insulation material required. Although some metal materials have good sound insulation ability, they are too expensive and heavy to be used outside buildings. And the range of noise processing ability is too limited, and the processing frequency range is relatively narrow, so it is difficult to adjust the frequency conversion noise with time period characteristics

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