A New Sound Barrier with Resonant Cantilever Beam

Abstract

A new type of sound barrier with resonant cantilever beams, including upper and lower structures composed of combined sound-absorbing and insulating barrier panels, and an intermediate structure composed of fixed sound-insulating frames and transparent plates. The fixed sound insulation frame connects the transparent plate and the upper and lower combined sound-absorbing and insulating barrier plates as a whole, and the transparent plate not only can provide a certain observation field of view for driving traffic vehicles, but also has a certain sound insulation effect. The present invention applies the resonant sound-absorbing structure such as the resonant cantilever beam to the sound barrier for the first time, which can further enhance the noise reduction effect of the sound barrier and minimize the impact of traffic noise on people's lives.

Description

technical field [0001] The invention relates to the technical field of sound-absorbing and insulating barriers, in particular to a novel sound-absorbing and insulating barrier containing resonant cantilever beams. Background technique [0002] In recent years, with the rapid development of my country's highways, railways, urban expressways and urban rail transit and other transportation infrastructure, although it provides convenience for people's travel, the accompanying noise problem has become more and more prominent. In some areas, there is even a phenomenon that the transportation infrastructure "convenience to the people also disturbs the people". Therefore, it is imminent to solve the problem of noise pollution. [0003] At present, the most effective way to solve the problem of traffic noise pollution is to install sound barriers on both sides of roads and railway lines. The traditional sound barrier works in a relatively simple way: one is guided by sound absorptio...

AI Technical Summary

Problems solved by technology

The traditional sound barrier works in a relatively simple way: one is guided by sound absorption, that is, the interior is filled with polymer porous sound-absorbing materials to absorb sound energy; the other is guided by sound insulation, that is, the use of metal, brick walls, etc. Thick and dense non-porous material to weaken the transmitted sound energy and block the transmission of sound

The sound barriers that use these two working methods alone often perform poorly in practical applications. Although some current sound barriers also have the ability to absorb and insulate sound, most of them still rely on the characteristics of the material itself to absorb and insulate sound. Structural design is rarely used to reduce noise, such as resonant sound-absorbing structures, multi-layer sound-insulating structures, etc.

Images