RU214565U1 - SOUND PROOFING - Google Patents

Abstract

The utility model relates to construction and is intended for use as a soundproof barrier between rooms in residential, public and industrial buildings. In the soundproof enclosure, which consists of two outer linings, a middle layer made of a rigid light material and two dividing layers made of an elastic material, reinforcing meshes are installed on the dividing layers, while the outer linings are made monolithic. The technical result of using the utility model is to increase the sound insulation of the soundproof enclosure. 2 ill.

Description

The utility model relates to construction and is intended for use as a soundproof barrier between rooms in residential, public and industrial buildings.

Currently, in the conditions of urban development, the protection of the population from noise is relevant. This task is important in the construction of new and renovation of existing buildings. Elevated noise levels cause great harm to human health, lead to the emergence and development of serious diseases. Therefore, the creation of new types of soundproof enclosures (partitions between rooms) that provide the required noise reduction in residential buildings, as well as at workplaces in public and industrial buildings, is an urgent and important task for the Russian construction industry.

Closest to the claimed device, selected as a prototype, is a soundproof fence, protected by utility model patent No. 153758, publ. July 27, 2015

In a well-known soundproof enclosure, consisting of two outer sheet facings, a middle layer of rigid, lightweight, porous material and two separating layers of elastic material, the fence consists of at least two separate panels interconnected, in which the outer sheet facings attached to metal profiles, and two separating layers are made of fibrous elastic material.

The disadvantages of the well-known sound-insulating barrier analog are: 1) when exposed to sound waves on the fence, the metal profiles of the frame limit the oscillatory movements of the outer sheet linings, which causes an increase in the resonant passage of sound through the known fence and, accordingly, a decrease in its sound insulation; 2) for the construction of partitions between the premises of the building using a well-known soundproof fence requires the use of two or more panels interconnected. This leads to the formation of vertical joints between the individual panels, which reduce the sound insulation of the known enclosure.

The technical problem solved by the proposed utility model is the improvement of the known soundproof enclosure for its use in the construction of soundproof partitions between rooms in residential, public and industrial buildings.

The technical result of using the utility model is to increase the sound insulation of the soundproof enclosure.

This result is achieved by the fact that in the soundproof enclosure, which consists of two outer linings, a middle layer made of a rigid light material and two separating layers made of an elastic material, reinforcing meshes are installed on the separating layers, while the outer linings are made monolithic.

In FIG. 1 shows a horizontal section of a fragment of a soundproof enclosure; in fig. Figure 2 shows the experimental frequency characteristics of sound insulation, showing an increase in the sound insulation of a patented fence compared to an analogous design.

The soundproof enclosure consists of external monolithic facings 1, a middle layer 2 made of a rigid lightweight material and two dividing layers 3 made of an elastic material. Reinforcing meshes 4 are installed on the separating layers 3 for fixing to the enclosing structures of the room and for ensuring the strength of monolithic external linings.

The sequence of installation of a soundproof fence between the premises of the building is as follows. On the floor of the room, a middle layer 2 is installed from a rigid lightweight material, with separating layers 3 made of an elastic material fixed on it. Reinforcing meshes 4 are installed on the separating layers 3, which are fixed to the enclosing structures along the perimeter of the room (walls, floor, ceiling). Perform external monolithic lining 1 by applying the mortar manually or using mechanized devices. Further finishing of the soundproof enclosure (painting, pasting with decorative materials) is carried out at the request of the operating organization.

To perform external monolithic claddings 1, various mortars can be used (for example, based on gypsum, cement, magnesia, and other types of binders). The middle layer 2 is made of a rigid lightweight material (for example, rigid mineral wool, rigid fiberglass, foam, expanded polystyrene, wood fibers, etc.). The layers of elastic material 3 can be made from various elastic materials (for example, polyester fiber, mineral wool, glass fiber, etc.). Reinforcing mesh 4 can be made of various materials (for example, fiberglass, steel, etc.).

In FIG. 2 shows the frequency characteristics of sound insulation, which were obtained by experimental measurements in the reverberation chambers of the laboratory of acoustics of NNGASU (Large acoustic chambers, the volume of the high-level chamber V _KVU = 259 m ³ , the volume of the low-level chamber V _KNU = 211 m ³ , the area of the test opening S = 10.5 m ² ), in accordance with the requirements of GOST 27296-2012.

In FIG. 2 graph number 5 shows the soundproofing of a patented soundproof enclosure with external monolithic linings 1 having a thickness of 25 mm, a middle layer 2 of rigid mineral wool having a thickness of 100 mm, separating layers 3 of an elastic material having a thickness of 4 mm (polyester fiber mats ), reinforcing grids 4 made of fiberglass. Graph number 6 shows the soundproofing of an analogue fence.

Based on the results of the measurements, airborne noise insulation indices (R _w , dB) for the considered soundproof fences were determined:

1) Patent-pending soundproof enclosure (partition) with external monolithic claddings made using shotcrete technology (Fig. 1): R _w = 57 dB;

2) soundproofing fence-analogue: R _{w (analogue)} = 54 dB.

In accordance with clause 9.2, table. 2 SP 51.13330 "Protection from noise", a patented soundproof fence (partition) with external monolithic linings made using the shotcrete technology (Fig. 1) can be used:

1) in residential buildings - as partitions without doors between rooms (R _wreq ≥ 43 dB); partitions between the kitchen and the room in the apartment (R _wreb ≥ 43 dB); partitions between a bathroom and a room of one apartment (R _wreq ≥ 47 dB);

2) in hotels with categories "five stars" and "four stars" - as partitions between rooms (R _wreq ≥ 53 dB); as partitions separating rooms from common areas (R _wreq ≥ 53 dB);

3) in hotels with a category of "three stars" - as partitions between rooms (R _wreq ≥ 51 dB); as partitions separating rooms from common areas (R _wreq ≥ 51 dB);

4) in hotels with categories below "three stars" - as partitions between rooms (R _wreq ≥ 50 dB); as partitions separating rooms from common areas (R _wreq ≥ 51 dB);

5) in administrative buildings and offices - as partitions between offices and separating offices from working rooms ( _Rwreq ≥ 45 dB);

6) in administrative buildings and offices - as partitions between offices of different firms, between offices of different firms ( _Rwreq ≥ 48 dB);

7) in hospitals and sanatoriums - as partitions between wards, doctors' offices (R _wreb ≥ 48 dB); partitions between operating rooms and partitions separating operating rooms from other rooms (R _wreq ≥ 54 dB);

8) in educational organizations - as partitions between classes, classrooms and auditoriums and partitions separating these premises from common areas (R _wreq ≥ 48 dB);

9) in preschool educational organizations - as partitions between group rooms, bedrooms and between other children's rooms (R _wreq ≥ 47 dB); partitions separating group rooms, bedrooms from kitchens ( _Rwreq ≥ 52 dB).

Analyzing the measurement results presented in Fig. 2, the following conclusions can be drawn:

1) a patented soundproof enclosure with external monolithic linings (Fig. 1) provides the required sound insulation values in the normalized frequency range from 100 Hz to 3150 Hz. Airborne sound insulation index is R _w = 57 dB;

2) the sound insulation of the patented soundproof fence with external monolithic linings (Fig. 1) exceeds the sound insulation of the analog fence by 1 dB to 11 dB in the frequency range from 100 Hz to 125 Hz, from 200 Hz to 1600 Hz, at a frequency of 3150 Hz ;

3) an increase in the airborne sound insulation index of a patented soundproof fence with external monolithic claddings (Fig. 1), compared with an analogue fence, is: ΔR _w = R _w - R _{w (analogue)} = 57 dB - 54 dB = 3 dB.

The achievement of the technical result is ensured as follows:

1) increasing the sound insulation of the patented soundproof enclosure with external monolithic linings (Fig. 1) is provided by reducing the resonant sound transmission in the normalized frequency range from 100 Hz to 3150 Hz. This result is achieved through the use of monolithic outer linings, which oscillate on separating layers of elastic material. The presence of monolithic outer facings ensures the absence of vertical joints between individual panels, which are available for an analogue fence, which further increases the sound insulation of the patented fence.

2) a patented soundproof enclosure with external monolithic claddings (Fig. 1), ensures compliance with the regulatory requirements of SP 51.13330 "Protection from noise" for sound insulation (the value of the airborne sound insulation index R _w , dB) when used as the following types of building envelopes:

2.1) in residential buildings - as partitions without doors between rooms (R _wreq ≥ 43 dB); partitions between the kitchen and the room in the apartment (R _wreb ≥ 43 dB); partitions between a bathroom and a room of one apartment (R _wreq ≥ 47 dB);

2.2) in hotels with categories "five stars" and "four stars" - as partitions between rooms (R _wreq ≥ 53 dB); as partitions separating rooms from common areas (R _wreq ≥ 53 dB);

2.3) in hotels with a category of "three stars" - as partitions between rooms (R _wreq ≥ 51 dB); as partitions separating rooms from common areas (R _wreq ≥ 51 dB);

2.4) in hotels with categories below "three stars" - as partitions between rooms (R _wreq ≥ 50 dB); as partitions separating rooms from common areas (R _wreq ≥ 51 dB);

2.5) in administrative buildings and offices - as partitions between offices and separating offices from working rooms (R _wreq ≥ 45 dB);

2.6) in administrative buildings and offices - as partitions between offices of different firms, between offices of different firms (R _wreq ≥ 48 dB);

2.7) in hospitals and sanatoriums - as partitions between wards, doctors' offices ( _Rwreq ≥ 48 dB); partitions between operating rooms and partitions separating operating rooms from other rooms (R _wreq ≥ 54 dB);

2.8) in educational organizations - as partitions between classes, classrooms and auditoriums and partitions separating these premises from common areas (R _wreq ≥ 48 dB);

2.9) in preschool educational organizations - as partitions between group rooms, bedrooms and between other children's rooms (R _wreq ≥ 47 dB); partitions separating group rooms, bedrooms from kitchens ( _Rwreq ≥ 52 dB).

In addition, the complexity of the installation of partitions using the proposed soundproof enclosure is reduced.

The patent is issued as part of the implementation of the Russian Science Foundation grant No. 21-19-00813.

Claims (1)

Soundproof enclosure consisting of two outer facings, a middle layer made of a rigid light material and two separating layers made of an elastic material, characterized in that reinforcing meshes are installed on the separating layers, while the outer facings are made monolithic.

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