SOUND SCREEN

FIELD: construction; acoustics.SUBSTANCE: invention relates to noise reducing structures. Sound screen contains foundation base, bearing base, transverse posts and longitudinal profiles, rear sound-reflecting panel, face sound transparent panel, perforated with through holes, sound-absorbing panels, presented by perforated porous sound-absorbing briquettes. Rear sound-reflecting panel is presented by internal embedded bearing flat-sheet structure containing perforated tubular hollow bearing bypass elements, on which supporting sound-absorbing panels are installed, arranged with their rear surfaces on both sides of rear sound-reflecting panel wall surface. Sound-absorbing panels, presented by perforated porous sound-absorbing briquettes, contain through mounting and perforation bypass holes, perforation assembly holes axes coincide with axes of rear sound-reflecting panel tubular hollow bearing bypass elements, distances t between axes of perforated porous sound-absorbing briquettes through bypass holes are in the range of t=0.1...0.2 a, where a is rear sound-reflecting panel overall height, diameters d of perforated porous sound-absorbing briquettes through bypass holes perforation are in the range d=0.05...0.2b, where b is sound protecting screen cross-section thickness. Perforated porous sound-absorbing briquettes, mounted on both sides of sound-reflecting panel rear wall are composed of separate crushed fragmented sound-absorbing elements, interconnected by sound-transparent adhesive joints into solid three-dimensional structures and/or additionally placed in cylindrical sound transparent containers, made of sound transparent film and/or sound transparent foil materials, on top of which face cylindrical sound transparent panels are mounted, perforated by through holes.EFFECT: higher noise reducing efficiency.23 cl, 15 dwg Изобретение относится к шумопонижающим конструкциям. Шумозащитный экран содержит фундаментное основание, несущее основание, поперечные стойки и продольные профили, тыльную звукоотражающую панель, лицевую звукопрозрачную панель, перфорированную сквозными отверстиями, звукопоглощающие панели, представленные перфорированными пористыми звукопоглощающими брикетами. Тыльная звукоотражающая панель представлена внутренней закладной несущей плосколистовой конструкцией, содержащей перфорированные трубчатые полые несущие перепускные элементы, на которых смонтированы звукопоглощающие панели, расположенные своими тыльными поверхностями по обе сторо