| 摘要 |
FIELD: construction. ^ SUBSTANCE: acoustic structure of a production room comprises a frame of a workshop, bearing walls with barriers in the form of a floor and a ceiling, which are lined by sound-absorbing structures, window and door openings. Separate sound absorbers are installed above noisy equipment in the room, and they contain a frame, where a sound-absorbing material is installed. Floor is arranged on an elastic base and comprises a positioning slab made of a concrete reinforced with vibration damping material. The positioning slab is installed on a base slab of a floor slab with cavities via layers of vibration damping material and hydraulic insulation material with a gap relative to bearing walls of a production room. Cavities of the base slab are filled with vibration damping material, for instance, with a foamed polymer. Sound-absorbing plates in the form of a triangular prism without a single face are installed on the ceiling. Each plate comprises sound-absorbing blocks tightened with side covers by means of a string with an element of its tension control, which is at the same time a bracket for fixation of the board either to the ceiling or to the room wall. ^ EFFECT: invention makes it possible to improve efficiency of noise attenuation. ^ 5 cl, 3 dwg |
