ACOUSTIC CONSTRUCTION FOR INDUSTRIAL FACILITIES Russian patent published in 2017 - IPC E04B1/74 E04B5/00 E04F15/18 

FIELD: construction.

SUBSTANCE: acoustic design of the industrial facilities contains the frame of the workshop, the walls carrying the floor and ceiling fences, which are lined with sound-absorbing structures, window and door openings, as well as piece sound absorbers containing the frame in which the sound-absorbing material is located and installed above the noisy equipment. The floor is made on an elastic foundation. The structure of the floor on the elastic foundation contains an installation plate, made of reinforced concrete with a vibration damping material, which is installed on two rigidly interconnected base plates of the high-strength interlayer overlap and seismic resistance with cavities through the layers of the vibration damping and waterproofing material with a gap in relation to the bearing walls of the production room. Layers of vibration damping and waterproofing material are made with a flange, tightly adjacent to the bearing structures of the walls and the base load-bearing slabs. A layer of vibration damping material is laid between the base plates of the interfloor overlapping. The cavities of the base plates are staggered and filled with a vibration damping material, for example, foam polymer, polyethylene or polypropylene. The walls are faced with sound-absorbing structures. As a sound-absorbing material, a rigid porous material can be used, for example, foam aluminium or cermet, or a shell stone with a porosity degree in the range of optimum values: 30÷45%. The elastic base of the floor is made of needle-punched mats of the Vibrosil type on the basis of silica or aluminoborosilicate fiber, or from hard vibrating damping materials, for example a plastic material, or from soundproofing plates based on a glass staple fiber of the type "NoisyStep" with a material density of 60÷80 kg/m³. In the cavities of the base plates of the interfloor overlap, the vibration damping inserts are located, made in the form of a cylinder of rigid vibration damping material, inside of which axially symmetric and coaxial resilient core is placed, along the axis of which rigidly fixed along the entire length of the cavity damping disks. The end discs are fixed "flush" with a cylinder of vibration damping material, the ends of which are in turn flush with the side surfaces of the base plate.

EFFECT: invention makes it possible to increase the strength and seismic stability of the building, as well as the efficiency of noise attenuation.

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