SOUND BARRIER Russian patent published in 2018 - IPC E01F8/00 

FIELD: construction.

SUBSTANCE: invention relates to noise-reducing structures installed, in particular, along motor roads and railways, airports, open sections of underground stations, near test sites, noise-active construction and production sites, or any other sources of high noise radiation, characterized as technical objects producing negative acoustic environment pollution. The sound barrier comprises a foundation base, a socle part, a load-bearing base, transverse racks, longitudinal profiles, a rear sound reflecting panel, a front sound transparent panel perforated with through holes, a sound absorbing panel. The sound absorbing panel is made up of acoustic panel modules made in the form of interlocked Helmholtz's acoustic resonators. The modules are formed by used recyclable hollow cavitary bottle tanks of PET-containers (PET-polyethylene terephthalate), comprising capacitive chamber parts and open threaded neck parts with dismantled screw plugs. The tanks are placed with their threaded neck parts in the mounting holes of the assembly and neck die represented by a perforated metal sheet or polymer structure, and rigidly fixed therein with corresponding screwed threaded fastening elements.

EFFECT: providing broadband noise-damping efficiency covering the low-, mid- and high-frequency area of the sound spectrum.

17 cl, 22 dwg