RU199553U1 - Soundproof building panel - Google Patents

Abstract

The utility model relates to the field of construction, namely to sound-absorbing building panels, and can be used for the construction of buildings and structures, fences, noise screens, mobile structures. The panel contains a load-bearing layer (1) of lightweight concrete and outer layers (2), (3) of fiberglass placed on both sides relative to the load-bearing layer. In this case, the ratio of the thicknesses of the carrier layer and the outer layer is from 4 to 50. The technical result is to increase the strength of the noise protection panel under environmental conditions. 7 h. p. f-ly, 3 ill., 1 pr.

Description

Technology area

The utility model relates to the field of construction, namely to noise protection panels and can be used for the construction of fences, noise protection screens and mobile structures.

State of the art

The use of noise-absorbing panels with a load-bearing layer of porous (light) concrete is economically beneficial, since porous concrete has good sound-absorbing properties, is a cheaper material than stone wool, and has better strength characteristics, which makes it possible to exclude reinforcing elements, stiffeners and additional internal partitions.

The closest analogue of the claimed utility model is the noise protection panel disclosed in the Chinese patent for utility model CN2489007, 05/01/2002. The specified panel includes a carrier layer made of foam concrete and outer layers placed on both sides relative to the carrier layer. The outer layers are formed by glass fabric embedded in the foam concrete in such a way that there is no clear boundary between the layers.

The disadvantage of this analogue is that the panel has relatively low strength characteristics. Such a panel can be used to create internal partitions in a building, but is not suitable for soundproofing structures exposed to the external environment. In particular, noise protection screens must withstand the impact of stones flying from under the wheels of cars, the impact of harvesting equipment, which rips off ice from panels and dumps drives snow with stones and debris along the panels. In addition, due to the wind load, variable air flows from vehicles, increased vibration from the main traffic, noise protection screens have constant vibrations and bends of the panels, which leads to displacement of the panels relative to each other and abrasion of the bearing layer at the junction.

Disclosure of the essence of the utility model

The main technical problem to be solved by the claimed utility model is to ensure the reliability and durability of the sound-absorbing panel without loss of sound-absorbing properties.

The technical result of the utility model is to increase the strength of the noise protection panel in the environment. Strength is understood as the ability of the panel to resist destruction under the influence of stresses arising from external forces. Environmental influences include impact, bending, thermal and abrasive effects.

The specified technical result is achieved in the utility model due to the fact that the soundproofing panel contains a load-bearing layer of lightweight concrete and outer layers made of fiberglass located on both sides relative to the load-bearing layer, while the ratio of the thickness of the load-bearing layer and the outer layer is from 4 to 50.

In addition, to achieve the technical result, particular options for the implementation of the utility model are provided, according to which:

- the bearing layer is made reinforced;

- the layers of the panel are held together by means of adhesive interlayers;

- the outer layers are combined into a closed contour, providing connection of the panel layers;

- to connect the panels to each other, fasteners in the form of a spike (4) and a groove (5) in the form of a polygon are placed on its end parts;

- the tongue and groove additionally have elements in the shape of a circle;

- external layers of the panel are made profiled with stiffening ribs;

- the outer layers of the panel have protruding elements extending into the depth of the panel.

In the declared soundproofing panel, the load-bearing layer is made of lightweight concrete, which has good sound-insulating characteristics (necessary for realizing the panel's purpose), but at the same time has a sufficiently high strength and good load-bearing characteristics (in comparison with other sound-insulating and sound-absorbing materials), high resistance to bending and other types of loads.

In addition, unlike the closest analogue in the structure under consideration, the outer layers are made of fiberglass, which is not integrated into the supporting layer, i.e. physically separated from him. Fiberglass acts as external reinforcement of lightweight concrete in the panel. At the same time, unlike concrete-reinforced fiberglass (used in the prototype) or ordinary PVC plastic (which is often used in building panels), fiberglass has a higher impact strength, abrasion resistance, greater bending stiffness and better protects a layer of lightweight concrete from environmental influences Wednesday. In addition, fiberglass, unlike metal, does not corrode, which ensures the preservation of the panel's strength during long-term operation.

The choice of the ratio of the thickness of the bearing and outer layers is due to the following. When the ratio is greater than 50, the outer layers of the fiberglass, being very thin in relation to the layer of lightweight concrete, will not essentially provide a strengthening of the carrier layer. In this case, a ratio of less than 4 is not advisable, since further thickening of the outer layer in relation to the carrier will not increase the strength of the structure.

Thus, all the above features are aimed at achieving a single technical result, which consists in increasing the strength of the soundproof panel under environmental conditions

Brief Description of Drawings

The utility model is illustrated by drawings, where:

Figure 1 schematically shows the structure of the claimed panel;

Figure 2 shows a first preferred embodiment of the structure;

Figure 3 shows a second preferred embodiment of the structure;

Structural elements and other objects are indicated in the figures by the following positions:

1 - carrier layer

2 - the first outer layer;

3 - the second outer layer;

4 - thorn;

5 - groove.

Implementation of the utility model

The multilayer building panel includes a core in the form of a carrier layer (1) on both sides of which the first outer layer (2) and the second outer layer (3) are located.

The carrier layer (1) is the basis of the building panel. The layer is made of lightweight concrete with a density of 100 to 2000 kg / m ³ . In particular, cellular concrete is used, for example, aerated concrete, aerated concrete or concrete with a variotropic structure. If necessary, this layer (1) can be reinforced. Also, the layer (1) can be wrapped in a polymer film, in particular in a polyethylene, cellophane or polyvinyl chloride film. The thickness of the backing layer can be from 10 mm to 150 mm.

The outer layers (2) and (3) are designed to increase the strength of the product and protect it from external environmental influences. The outer layer is made of fiberglass, in particular FRP (glass fiber reinforced plastic). The thickness of each of the outer layers (2,3) is between 0.2 mm and 7 mm.

According to the first embodiment of the structure (Fig. 2), the layers (1), (2), (3) of the panel are connected by means of adhesive interlayers. At the same time, on the edges of the outer layers (2) and (3) of the panel, two spikes (4) and two grooves (5) are formed on opposite sides of the panel, allowing the panels to be joined together.

If it is impossible to use adhesive interlayers, the connection of the layers of the panel to each other can be carried out by combining the outer layers (2) and (3) into a single contour covering both the side and end sides of the panel (Fig. 3). Thus, at least two additional outer layers are provided, located perpendicular to the carrier layer (1), which are produced in a single profile or assembled into a single profile from several parts. In this case, on the end sides of the profile there is a protrusion in the form of a spike (4) and a depression in the form of a groove (5) to ensure the locking connection of the panels to each other. The tongue-and-groove connection profile can have the shape of a rectangle, triangle, part of a circle, polygon, a combination of these shapes, etc.

The layers of the panel can be profiled, corrugated, have stiffeners or projections that go deep into the inner layers.

The panel can be manufactured by methods known to those skilled in the art. In particular, the outer layers (2) and (3) are produced by pultrusion. In the case of panel assembly according to the first design option (Fig. 2), the layers are sequentially glued with an adhesive. When assembling the panel according to the second design option (Fig. 3), the outer layers are made in the form of a single hollow profile or a single hollow profile is assembled from several elements at the locking joints and concrete is poured into the profile. After the concrete has hardened and the bearing layer (1) is formed, the ends are sealed.

Example.

A soundproofing panel was made according to the claimed utility model, which includes: a carrier layer (1) of foam concrete 109 mm thick, and outer layers of fiberglass with a thickness of 3 mm. Such a panel has a strength of 10 MPa and a sound insulation index of 42 dB.

Claims (8)

1. Noise protection panel containing a load-bearing layer (1) made of lightweight concrete and external layers (2), (3) located on both sides relative to the load-bearing layer, characterized in that the outer layers are made of fiberglass, while the ratio of the thickness of the load-bearing layer and the outer layer is from 4 to 50. 2. Panel according to claim 1, characterized in that the carrier layer (1) is made reinforced. 3. The panel according to claim 1, characterized in that the layers of the panel are held together by means of adhesive interlayers. 4. The panel according to claim 1, characterized in that the outer layers (2), (3) are combined into a closed hollow contour, providing connection of the layers of the panel. 5. Panel according to claim 1, characterized in that to connect the panels to each other, fasteners in the form of a thorn (4) and a groove (5) in the form of a polygon are placed on its end parts. 6. Panel according to claim 5, characterized in that the spike (4) and the groove (5) additionally have elements in the shape of a circle. 7. The panel according to claim 1, characterized in that the outer layers of the panel are profiled with ribs. 8. The panel according to claim 1, characterized in that the outer layers of the panel have protruding elements extending deep into the panel.

Images