| 摘要 |
FIELD: construction. ^ SUBSTANCE: acoustic structure comprises a shop carcass, window openings and acoustic barriers in the form of acoustic sound-absorbing panels assembled into sections. Window openings comprise vacuum sound-insulating glasing units. Acoustic sound-absorbing panels consist of a frame made in the form of a parallelepiped formed by front and rear walls of the panel, every of which is ""-shaped. The floor is made on an elastic base and comprises a bearing ceiling slab joined to the building wall, a base plate made of concrete reinforced with vibration damping material, which is installed on a basic plate of a floor slab with cavities via layers of vibration damping material and hydraulic insulation material installed with a gap relative to bearing walls of a production room, which are made with flanging that tightly adjoins bearing structures of the walls and the basic bearing wall. Cavities of the basic plate are filled with vibration damping material, for instance, with a foamed polymer. A link sound absorber comprises a rigid frame suspended at hooks by ropes to the production building ceiling with sound-absorbing material installed inside the frame and wrapped by a meshy capron tissue. An expanded steel sheet is fixed to the frame. The frame is arranged in its shape as a rectangular parallelepiped with dimensions of ribs dùhùb, ratio of which is in the optimal range of values d:h:b=2:1:0.5, or a cube with rib dimensions kùL, where min L=100 mm, k - coefficient of proportionality within the range from 1 to 10 with the pitch of 2. All types of bracket arrangement observe optimal ratios of dimensions: m - from a point of frame suspension on a guide to the ceiling and c - distance between axes of neighbouring frames. Ratio of these dimensions must be in the optimal range of dimensions: m:c=1:1Ç0.5:1. ^ EFFECT: invention makes it possible to improve efficiency of noise attenuation. ^ 6 dwg |
