CN111827529A

CN111827529A - Sound insulation composite wall

Info

Publication number: CN111827529A
Application number: CN202010610125.1A
Authority: CN
Inventors: 刘明海; 王洪波; 徐正东; 刘占维
Original assignee: Beijing New Building Material Group Co Ltd; China National Building Materials Innovation and Technology Research Institute Co Ltd
Current assignee: Beijing New Building Material Group Co Ltd; China National Building Materials Innovation and Technology Research Institute Co Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2020-10-27

Abstract

The application discloses sound insulation composite wall, include: the wall unit of vertical setting with set up in the wall unit of support fossil fragments both sides, the wall unit include first wallboard, second wallboard and set up in first wallboard with shock attenuation fossil fragments between the second wallboard, first wallboard is located the second wallboard is kept away from one side of support fossil fragments, both sides form first sound insulation cavity between the wall unit, first wallboard with be formed with second sound insulation cavity between the second wallboard. In the sound insulation composite wall, the sound insulation performance of the wall is greatly improved by arranging the damping keel, the first sound insulation cavity and the second sound insulation cavity.

Description

Sound insulation composite wall

Technical Field

The present invention relates to, but is not limited to, the field of building technology, and more particularly, to a sound insulation composite wall.

Background

Gypsum board walls are increasingly used as indoor partitions in modern buildings as a lightweight wall. In the gypsum board wall body, the gypsum board is fixed on the light steel keel, and the light steel keel is utilized to support and fix the gypsum board. However, although the gypsum board wall has a certain sound insulation capability, a good sound insulation effect is difficult to achieve, and the requirements of people cannot be met.

Disclosure of Invention

The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

The embodiment of the application provides a sound insulation composite wall, which has a good sound insulation effect by arranging various sound insulation structures.

The embodiment of the application provides a sound insulation composite wall, includes: the wall unit of vertical setting with set up in the wall unit of support fossil fragments both sides, the wall unit include first wallboard, second wallboard and set up in first wallboard with shock attenuation fossil fragments between the second wallboard, first wallboard is located the second wallboard is kept away from one side of support fossil fragments, both sides form first sound insulation cavity between the wall unit, first wallboard with be formed with second sound insulation cavity between the second wallboard.

In this sound insulation composite wall body, the shock attenuation fossil fragments have certain elasticity, and when energy such as sound wave acted on wall body or shock attenuation fossil fragments, the shock attenuation fossil fragments can produce the vibration, turns into solid mechanical vibration energy with sound energy through the vibration, turns into heat energy again and dissipates to reach the sound insulation, fall the purpose of making an uproar. Due to the elastic layer function of the air layer, the wall body is similar to the wall body in which three springs or three dampers are added, and sound energy is attenuated due to the vibration of the air, so that the sound insulation purpose is achieved; meanwhile, due to the addition of the air layer, sound waves can be converted among different media in the process of transmission, the reflection and attenuation of the sound waves are increased, the purposes of sound insulation and noise reduction are achieved, and the sound insulation performance of the wall body is greatly improved.

The sound insulation composite wall body of the embodiment of the application has the advantages that the sound insulation performance of the wall body is greatly improved through the arrangement of the damping keel, the first sound insulation cavity and the second sound insulation cavity.

Other features and advantages of the present application will be set forth in the description that follows.

Drawings

The accompanying drawings are included to provide an understanding of the present disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the examples serve to explain the principles of the disclosure and not to limit the disclosure.

Fig. 1 is a schematic structural diagram of a sound insulation composite wall according to a first embodiment of the present application;

fig. 2 is a schematic structural diagram of a wall unit of an acoustic composite wall according to an embodiment of the present application;

fig. 3a is a first schematic structural diagram of a vibration-damping keel of the sound-insulation composite wall body according to the embodiment of the application;

fig. 3b is a schematic structural diagram of a shock-absorbing keel of the sound insulation composite wall according to the embodiment of the application;

fig. 3c is a schematic structural diagram of another vibration-damping keel of the sound-insulation composite wall body according to the embodiment of the application;

fig. 3d is a schematic structural diagram of another shock-absorbing keel of the sound insulation composite wall according to the embodiment of the application;

fig. 4 is a schematic structural diagram of a sound insulation composite wall according to a second embodiment of the present application;

fig. 5 is a schematic structural diagram of a decorative panel of the sound insulation composite wall according to the embodiment of the application;

fig. 6 is a schematic structural diagram of a sound insulation composite wall according to a third embodiment of the present application;

fig. 7 is a schematic layout of the keel of the sound insulation composite wall according to the embodiment of the application.

Reference numerals:

1: a first wall panel; 2: a second wall panel; 3: a shock-absorbing keel; 31: a first fixed arm; 32: a second fixed arm; 33: a connecting arm; 34: curling; 35: a support edge; 4: a support keel; 41: a sound insulating layer; 5: a sound insulating strip; 6: a decorative panel; 61: sticking; 62: leveling the gasket; 71: a first sound-insulating cavity; 72: a second sound-insulating cavity; 73: a third sound-insulating cavity; 81: a first fastener; 82: a second fastener; 83: a third fastener; 9. a sound absorbing layer; 10: a junction box; 101: outer envelope, 102: sealing glue; 11: a ceiling keel; 12: a keel; 13: penetrating the keel; 14: a vertical keel.

Detailed Description

Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.

An embodiment of the present application provides a sound insulation composite wall, as shown in fig. 1 and 2, including: the wall body unit includes first wallboard 1, second wallboard 2 and sets up in the shock attenuation fossil fragments 3 between first wallboard 1 and second wallboard 2, and first wallboard 1 is located one side that support fossil fragments 4 were kept away from to second wallboard 2, forms first sound insulation cavity 71 between the wall body unit of both sides, is formed with second sound insulation cavity 72 between first wallboard 1 and the second wallboard 2. The vertical direction is the direction perpendicular to the ground after the wall body is installed, and the horizontal direction is the direction parallel to the ground after the wall body is installed.

In this sound insulation composite wall, support fixedly through supporting fossil fragments 4 to the wall body unit, connect second wallboard (interior wallboard) 2 and first wallboard (side fascia) 1 through shock attenuation fossil fragments 3. Not only the second wallboard 2 and the first wallboard 1 can play certain sound insulation effect, and the shock attenuation fossil fragments 3 also can play sound insulation, the effect of making an uproar falls. Because the shock absorption keel 3 has certain elasticity, when energy such as sound waves acts on a wall body or the shock absorption keel 3, the shock absorption keel 3 can vibrate, sound energy is converted into solid mechanical vibration energy through vibration, and then the solid mechanical vibration energy is converted into heat energy to be dissipated, so that the purposes of sound insulation and noise reduction are achieved.

The arrangement of the first sound insulation cavity 71 between the second wallboards 2 of the two wall units and the second sound insulation cavity 72 (two) between the first wallboard 1 and the second wallboard 2 increases three layers of air layers in the wall body, and due to the action of the elastic layer of the air layers, the wall body is similar to the wall body in which three springs or three dampers are added, and due to the vibration of the air, sound energy is attenuated, so that the sound insulation purpose is achieved; meanwhile, due to the addition of the air layer, sound waves can be converted among different media in the process of transmission, the reflection and attenuation of the sound waves are increased, the purposes of sound insulation and noise reduction are achieved, and the sound insulation performance of the wall body is greatly improved.

The sound insulation composite wall body of the embodiment of the application is matched with the first sound insulation cavity 71 and the second sound insulation cavity 72 through the shock absorption keel 3, so that the sound insulation performance of the wall body is greatly improved.

In some exemplary embodiments, as shown in fig. 2 to 3d, the shock absorbing keel 3 includes a first fixing arm 31, a connecting arm 33 and a second fixing arm 32 connected in sequence, the first fixing arm 31 and the second fixing arm 32 are parallel, the connecting arm 33 is disposed obliquely, and an end of the connecting arm 33 connected with the second fixing arm 32 is inclined toward a side far away from the first fixing arm 31, the first fixing arm 31 is fixedly connected with the second wall board 2, and the second fixing arm 32 is fixedly connected with the first wall board 1. Wherein the wall thickness of the vibration damper keel 3 is omitted in fig. 3b and 3 d.

First fixed arm 31 is parallel with second fixed arm 32, and is parallel with second wallboard 2 and first wallboard 1 to first fixed arm 31 is fixed with second fixed arm 32 respectively after laminating with second wallboard 2 and first wallboard 1. Due to the inclined arrangement of the connecting arm 33, the first fixing arms 31 and the second fixing arms 32 are arranged in a staggered manner (i.e. the projection of the first fixing arms 31 on the plane of the second fixing arms 32 is separated from the second fixing arms), and the close ends of the first fixing arms 31 and the second fixing arms 32 (the right end of the first fixing arms 31 and the left end of the second fixing arms 32) are respectively connected with the two ends of the connecting arm 33.

The vibration-damping keel 3 is approximately in a shape of Chinese character 'ji', and has good elasticity, when energy such as sound waves acts on the vibration-damping keel 3 or a wall body, the vibration-damping keel 3 can vibrate, sound energy is converted into solid mechanical vibration energy through vibration, and then the solid mechanical vibration energy is converted into heat energy to be dissipated, so that the purposes of sound insulation and noise reduction are achieved, and the sound insulation performance of the wall body is improved.

Compare ordinary light gauge steel (like C type etc.), Z type fossil fragments, "it" style of calligraphy damping fossil fragments 3 have better elasticity, connect first wallboard 1 and second wallboard 2 of "it" style of calligraphy damping fossil fragments 3 both sides for non-rigid connection, during the wallboard vibration of its one side, be difficult for passing to the opposite side wallboard with the vibration to improve the sound-proof performance of wall body.

Because the damping material with good elasticity has good noise reduction effect on low frequency, the Z-shaped shock absorption keel 3 has better sound absorption effect than the Z-shaped keel when the low frequency is low, particularly between 100Hz and 300 Hz, and the Z-shaped shock absorption keel 3 has better sound absorption effect, thereby overcoming the defect that the traditional C-shaped keel and the traditional Z-shaped keel have poorer sound absorption performance at the low frequency.

In some exemplary embodiments, as shown in fig. 2-3 d, the end of first fixing arm 31 remote from second fixing arm 32 (the left end of first fixing arm 31) is provided with a bead 34, and bead 34 is bent toward the side where first wall panel 1 is located. Wherein the bead 34 may be L-shaped such that the end of the first fixing arm 31 forms a U-shaped structure. There is a gap between the bead 34 and the first wall panel 1, which are not in contact. Of course, the bead 34 may also be curved, or may be in the shape of a vertical or oblique edge.

In some exemplary embodiments, as shown in fig. 2-3 d, the end of the second fixing arm 32 away from the first fixing arm 31 (the right end of the second fixing arm 32) is provided with a supporting edge 35, and the supporting edge 35 is bent towards the second wall plate 2. The support edge 35 is spaced from the second panel 2 without contact.

The setting of turn-up 34 and support limit 35 can strengthen shock attenuation fossil fragments 3's structural strength, improves the supporting effect of shock attenuation fossil fragments 3 to first wallboard 1. The gap is reserved between the turned edge 34 and the first wall board 1, and the gap is reserved between the supporting edge 35 and the second wall board 2, so that the vibration characteristics of the shock absorption keel 3 under the action of sound waves are not influenced by the arrangement of the turned edge 34 and the supporting edge 35, and the sound insulation and noise reduction effects of the shock absorption keel 3 are not influenced.

In some exemplary embodiments, the angle β between the support edge 35 and the second securing arm 32 is 70 ° to 160 °.

In some exemplary embodiments, as shown in fig. 2-3 b, the supporting edge 35 is a straight edge that is perpendicularly arranged with respect to the second fixing arm 32, i.e. the angle β between the supporting edge 35 and the second fixing arm 32 is 90 °.

In some exemplary embodiments, as shown in fig. 3c and 3d, the supporting edge 35 is a sloping edge that is obliquely arranged with respect to the second fixing arm 32, and the included angle β between the supporting edge 35 and the second fixing arm 32 is an obtuse angle. In some exemplary embodiments, β may range from 100 ° to 160 °, such as 110 °, 120 °, 130 °, 140 °, 150 °, 153 °, 155 °, and so on.

In some exemplary embodiments, the supporting edge 35 is a bevel edge disposed obliquely to the second fixing arm 32, and the included angle β between the supporting edge 35 and the second fixing arm 32 is an acute angle. In some exemplary embodiments, β may range from 70 ° to 90 °, such as may be 75 °, 80 °, 85 °, and so forth.

In some exemplary embodiments, as shown in fig. 2, the gap between the support edge 35 and the second wall panel 2 is 3mm to 12 mm.

When the first wall panel 1 is fixed to the second fixing arm 32 of the vibration-damping keel 3 by a screw (first connecting member 81, described later), the screw passes through the first wall panel 1 and the second fixing arm 32 in this order from the outside. In-process that the screw penetrated, because damping fossil fragments 3 have elasticity, damping fossil fragments 3's second fixed arm 32 can be to keeping away from first wallboard 1 direction motion deformation, lead to the screw can not be effectively connected with damping fossil fragments 3, generally cushion earlier the foam between second fixed arm 32 and second wallboard 2 this moment and play the screw again, but after playing the screw, the foam is difficult to take out completely, can weaken damping fossil fragments's elasticity, reduces wall body sound insulation performance.

The inventor of this application is through research and experiment, will support the limit 35 and with the second wallboard 32 between the interval set up to 3mm-12mm (as 5mm), when the screw was worn, the second fixed arm 32 took place moderate degree deformation back, and support limit 35 can the butt on second wallboard 2, and then the deformation distance of restriction second fixed arm 32, guarantees that the screw penetrates the second fixed arm 32 of damping fossil fragments 3 smoothly, does not influence the sound insulation effect simultaneously.

In some exemplary embodiments, as shown in fig. 2-3 d, the height B1 of the supporting edge 35 is less than the height B of the vibration-damping keel 3, such that there is a height difference B2 between the supporting edge 35 and the first fixing arm 31 (the distance between the supporting edge 35 and the end surface of the first fixing arm 31 that is away from the second fixing arm 32). In some exemplary embodiments, the distance B2 between the supporting edge 35 and the end surface of the first fixing arm 31 remote from the second fixing arm 32 is 3mm-10mm to ensure that the gap between the supporting edge 35 and the second wall panel 2 is in the range of 3mm-12 mm.

In an exemplary embodiment, the height B1 of the supporting edge 35 may be 20mm, and the height B of the vibration-damping keel 3 may be 25mm, so that the distance B2 between the supporting edge 35 and the end surface of the first fixing arm 31 remote from the second fixing arm 32 may be 5 mm.

In some exemplary embodiments, as shown in fig. 2-3 d, the height B3 of the rolled edge 34 is less than the height B of the vibration-damping keel 3, so that a gap is formed between the rolled edge 34 and the first wall panel 1, and the sound-proof and noise-reducing effects of the vibration-damping keel 3 are not affected.

In some exemplary embodiments, the height B3 of bead 34 is less than the height B1 of support edge 35. In an exemplary embodiment, the height B of the vibration dampening spine 3 may be 25mm, the height B1 of the support rim 35 may be 20mm, and the height B3 of the bead 34 may be 3.5 mm. In other exemplary embodiments, the height B3 of the hem 34 may be equal to or greater than the height B1 of the support rim 35.

In other exemplary embodiments, a bead 34 is provided at an end of the second fixing arm 32 remote from the first fixing arm 31, and a support edge 35 is provided at an end of the first fixing arm 31 remote from the second fixing arm 32; alternatively, a curled edge 34 is provided at both ends, or a support edge 35 is provided at both ends. When the two ends of the first fixing arm 31 and the second fixing arm 32, which are far away from each other, are provided with the curled edges, the distance between the curled edge provided on the second fixing arm 32 and the end face of the first fixing arm 31, which is far away from the second fixing arm 32, is 3mm-10 mm.

In some exemplary embodiments, as shown in fig. 2-3 d, the angle α between the connecting arm 33 and the first retaining arm 31 is 100 ° -160 °. Such as: the included angle α can be 110 °, 118 °, 120 °, 122 °, 125 °, 128 °, 130 °, 133 °, 135 °, 140 °, 145 °, 150 °, and so forth.

The included angle alpha between the connecting arm 33 and the first fixing arm 31 is set to be 100-160 degrees, the vibration reduction keel 3 is guaranteed to have enough elasticity and rigidity, the problem that the vibration reduction keel 3 is insufficient in elasticity and poor in sound insulation due to the fact that the angle alpha is too small is avoided, or the vibration reduction keel 3 is insufficient in rigidity due to the fact that the angle alpha is too large, and therefore a wallboard cannot be stably supported.

In some exemplary embodiments, the width a1 of the first securing arm 31 is different than the width a2 of the second securing arm 32. In one exemplary embodiment, as shown in fig. 3 a-3 d, the width a1 of the first securing arm 31 is less than the width a2 of the second securing arm 32.

In some exemplary embodiments, the width a1 of the first securing arm 31 is approximately equal to half the width a2 of the second securing arm 32.

In an exemplary embodiment, as shown in fig. 3a and 3b, the width a of the vibration dampening keel 3 may be 90mm, the width a1 of the first securing arm 31 may be 23mm-27mm (e.g., may be 24mm), and the width a2 of the second securing arm 32 may be 50 mm.

In another exemplary embodiment, as shown in fig. 3c and 3d, the width a of the vibration dampening keel 3 may be 130mm, the width a1 of the first securing arm 31 may be 23mm-27mm (e.g., may be 24mm), and the width a2 of the second securing arm 32 may be 50 mm.

When in the sound insulation wall body, the first fixed arm 31 of the shock absorption keel 3 is connected with the second wall board 2 at the inner side, and the second fixed arm 32 is connected with the first wall board 1 at the outer side. When the seam of two first wallboards 1 corresponds second fixed arm 32, need fix the flange limit of two first wallboards 1 simultaneously on second fixed arm 32, when the nailing is fixed, the screw is apart from the flange limit more than 10mm at least, if second fixed arm 32 is too narrow, just is not fixed two first wallboards 1 well. Therefore, the width a2 of second fixing arm 32 is set to be larger, so that nailing and fixing are facilitated on the plate edges of two first wall plates 1 at the joint of the two first wall plates 1.

In some exemplary embodiments, the width A of the shock absorbing runner is 50mm to 150 mm. In an exemplary embodiment, the width a of the vibration damper keel 3 as a whole may be 64mm or 90mm or 130 mm.

In some exemplary embodiments, the height B of the shock absorbing keel is 10mm-50 mm. In an exemplary embodiment, the height B of the vibration damping keel 3 as a whole may be 15mm or 25 mm.

In some exemplary embodiments, the wall thickness of the vibration dampening keel 3 may be 0.4mm to 1 mm. In an exemplary embodiment, the wall thickness of the vibration damping keel 3 may be 0.6mm or 1 mm. The wall thickness of the vibration-damping keel 3 is not limited to 0.6mm or 1mm, and can be adjusted as required.

In an exemplary embodiment, the width a of the vibration-damping keel 3 may be about 64mm, the height B may be 15mm, and the wall thickness may be 0.6mm, that is, the cross-sectional dimension of the vibration-damping keel 3 is 64 × 15 × 0.6 (referred to as 64 vibration-damping keel), the cross-sectional dimension is smaller, the wall thickness is thinner, and the vibration-damping keel 3 has good elasticity, so that the noise reduction function of the middle and low frequency noise can be enhanced. The wall thickness of the vibration reduction keel 3 is 0.6mm, and in order to enhance the noise reduction effect of the vibration reduction keel 3, the wall thickness of the vibration reduction keel 3 can be thinner under the condition of ensuring the use strength, so that the elasticity of the vibration reduction keel 3 is enhanced, and the capability of reducing noise at medium and low frequencies is enhanced. The better the elasticity of the vibration-damping keel 3 is, the better the sound-absorbing effect thereof on low frequencies is.

In an exemplary embodiment, the width a of the vibration damper keel 3 may be about 90mm, the height B may be 25mm, and the wall thickness 0.6mm, i.e., the cross-sectional dimension of the vibration damper keel 3 is 90 × 25 × 0.6.

In an exemplary embodiment, the width a of the vibration damper keel 3 may be about 130mm, the height B may be 25mm, and the wall thickness 0.6mm, i.e. the cross-sectional dimension of the vibration damper keel 3 is 130 × 25 × 0.6.

In some exemplary embodiments, the shock absorbing runner 3 is a steel runner. Specifically, the shock-absorbing keel 3 can be made of galvanized steel strips, and can be a light steel keel made of the same material as the supporting keel 4.

In some exemplary embodiments, the ends of the vibration damping keel 3 are free ends.

One side (inboard) of damping fossil fragments 3 is connected with support fossil fragments 4 and second wallboard 2, and opposite side (outside) is connected with first wallboard 1, and both ends are the free end, and then damping fossil fragments 3 realize the suspension setting on support fossil fragments 4. In other words, only one side (inside) of the vibration-damping keel 3 is fixedly connected with a building wall (such as a ceiling, a floor and a side wall) or a structural member (such as a supporting keel and a ceiling keel), the other side (outside) is only connected with the first wall plate 1, and both ends and the other side (outside) are not provided with connecting structural members. The damping fossil fragments 3's that suspension set up home range is bigger, and elasticity is better, so it is better to the low frequency sound absorption. The better the elasticity of the vibration reduction keel 3 is, the sound insulation wall not only has obvious improvement on the sound insulation quantity of the low-frequency band, but also weakens the coincidence effect, and the weighted sound insulation quantity is larger.

In some exemplary embodiments, the vibration dampening keels 3 are arranged laterally (as shown in fig. 2) or longitudinally or obliquely.

The upper and lower both ends of the damping fossil fragments 3 of vertical setting can not be connected with world fossil fragments for damping fossil fragments 3 are the suspended state, and both ends are free. The left end and the right end of the vibration reduction keel 3 which is transversely arranged are not connected with the keel (such as the supporting keel 4) which is vertically arranged on the sound insulation wall body.

In some exemplary embodiments, the support grid 4 is a C-grid, H-grid or Z-grid.

The sound insulation effect of the vibration-damping keel 3 will be described below with reference to three wall structures.

1. Wall structure 1: sound insulation amount 1: rw (C; Ctr) 49 (-4; -12) dB

The construction method comprises the following steps: 9.5 thick (9.5mm thick, same below) ordinary gypsum plaster slab +12 thick ordinary gypsum plaster slab +75 light gauge steel (50mm thick rock wool is filled in) +12 thick ordinary gypsum plaster slab +9.5 thick ordinary gypsum plaster slab

2. The wall structure 2: sound insulation amount 2: rw (C; Ctr) is 53dB

The construction method comprises the following steps: 9.5 thick common thistle board +12 thick common thistle board + Z type 75 fossil fragments (fill 50 thick rock wool) +12 thick common thistle board +9.5 thick common thistle board

3. And (3) wall structure: sound insulation amount 3: rw (C; Ctr) 52 (-2; -8) dB

The construction method comprises the following steps: 9.5 thick common paper-surface gypsum board, 12 thick common paper-surface gypsum board, 64 vibration-damping keel, 75 light steel keel (filled with 50 thick rock wool), 64 vibration-damping keel, 12 thick common paper-surface gypsum board, 9.5 thick common paper-surface gypsum board

TABLE 1

It can be seen from table 1 that, compared with the common C-shaped light steel keel, the Z-shaped keel and the vibration damping keel are used, which have a very obvious noise reduction effect on middle and low frequency noise, especially below 1000Hz (hertz).

Generally, the low-frequency sound insulation of a light wall is poor, and the main reason is that the wall board is light and is difficult to block low-frequency sound with large vibration amplitude and long wavelength. The Z-shaped keel and the vibration reduction keel are used, so that the defect that a gypsum board wall body using the light steel keel is poor in low-frequency sound insulation performance can be overcome.

As can be seen from the table 1, the sound absorption and noise reduction effects of the vibration reduction keel are better than those of the Z-shaped keel in the low frequency range, namely between 125Hz and 315Hz, and the condition that the noise reduction effect of the Z-shaped keel in the low frequency range is not ideal can be compensated. The sound insulation wall body using the vibration reduction keel has good sound absorption and noise reduction effects in a low-frequency range, and reduces the pollution of low-frequency noise such as a motor and a fan.

As can be seen from the table 1, the Z-shaped keel and the vibration reduction keel are used, so that the sound absorption and noise reduction effects are good at medium and high frequencies. Under the condition of using gypsum boards of the same type and rock wool of the same thickness, compared with the traditional C-shaped light steel keel, the sound insulation performance of the wall is improved by using the Z-shaped keel and the vibration reduction keel, the sound insulation quantity of the wall using the Z-shaped keel is improved by 3dB (decibel), and the sound insulation quantity of the wall using the vibration reduction keel is improved by 2 dB.

In some exemplary embodiments, as shown in fig. 1, sound insulation strips 5 are provided between the vibration-absorbing joists 3 and the first wall panel 1, between the vibration-absorbing joists 3 and the second wall panel 2, and between the support joists 4 and the wall units.

Be equipped with sound insulation strip 5 between second fixed arm 32 of shock attenuation fossil fragments 3 and first wallboard 1, be equipped with sound insulation strip 5 between first fixed arm 31 of shock attenuation fossil fragments 3 and the second wallboard 2, support fossil fragments 4 can be C shape fossil fragments, its both sides arm respectively with two wall body unit's second wallboard 2 between be equipped with sound insulation strip 5. The sound insulation strip 5 can be an elastic strip, such as a rubber strip, a nylon strip and the like, can be adhered and fixed, or can be formed by damping sound insulation sealant.

The sound insulation strip 5 is arranged, so that hard connection (direct connection) does not exist between the shock absorption keel 3 and the first wallboard 1, between the shock absorption keel 3 and the second wallboard 2 and between the support keel 4 and the second wallboard 2, attenuation of sound energy is enhanced through the sound insulation strip 5, and the purpose of further sound insulation is achieved.

In some exemplary embodiments, a sound insulation strip 5 is disposed between the first fixing arm 31 of the vibration-damping keel 3 and the second wall board 2, and a gap between the supporting edge 35 of the second fixing arm 32 and the second wall board 2 is greater than a distance between the supporting edge 35 and an end face of the first fixing arm 31 far away from the second fixing arm 32. In some exemplary embodiments, the sound-proof strip 5 is not disposed between the first fixing arm 31 of the vibration-damping keel 3 and the second wall panel 2, and the gap between the supporting edge 35 of the second fixing arm 32 and the second wall panel 2 is equal to the distance between the supporting edge 35 and the end face of the first fixing arm 31 far away from the second fixing arm 32. Wherein, the thickness of the sound insulation strip 5 can be 2mm-5 mm.

In some exemplary embodiments, as shown in fig. 1, the vibration-damping keel 3 and the first wall panel 1 are fixed by a first fastener 81, the vibration-damping keel 3 and the second wall panel 2 and the support keel 4 are fixed by a second fastener 82, the second wall panel 2 and the support keel 4 are fixed by a third fastener 83, the first fastener 81 and the second fastener 82 are arranged in a staggered manner, and the first fastener 81 and the third fastener 83 are arranged in a staggered manner. Wherein the first fastener 81, the second fastener 82 and the third fastener 83 may be screws.

The first fasteners 81, the second fasteners 82 and the third fasteners 83 are arranged in a staggered mode, so that a metal sound bridge of the oppositely-penetrating self-tapping screws and the keels is not formed in the whole wall, sound transmission of the sound bridge is blocked, and the sound insulation purpose is achieved. In addition, the sound insulation strip 5 between the shock absorption keel 3 and the first wallboard 1, between the shock absorption keel 3 and the second wallboard 2 and between the support keel 4 and the second wallboard 2 makes no hard connection (direct connection) between the second wallboard 2, the first wallboard 1, the shock absorption keel 3 and the support keel 4, and no sound bridge, so that the purpose and the effect of better cutting off the sound bridge are achieved, and the sound insulation effect of the wall body is improved.

In some exemplary embodiments, the plate thicknesses of the two second wall panels 2 of the wall elements on both sides are the same, the plate thicknesses of the two first wall panels 1 of the wall elements on both sides are the same, and the plate thicknesses of the second wall panels 2 and the first wall panels 1 are the same or different.

In some exemplary embodiments, the two second wall panels 2 of the wall units on both sides have different plate thicknesses, the two first wall panels 1 of the wall units on both sides have different plate thicknesses, and the second wall panel 2 of the wall unit on one side of the support keel 4 has the same plate thickness as the first wall panel 1 of the wall unit on the other side of the support keel 4.

The thickness of the two second wall panels 2 may be the same or different, the thickness of the two first wall panels 1 may be the same or different, and the thickness of the second wall panels 2 may be the same or different from the thickness of the first wall panels 1. The second wall panel 2 and the first wall panel 1 may be 9.5mm, 12mm or 15mm thick gypsum board, such as glass fibre felt gypsum board, fibre gypsum board, paper-faced gypsum board or paperless gypsum board. Such as: the second wall panel 2 and the first wall panel 1 may each be 12mm thick gypsum board. Alternatively, the second wall panel 2 on one side (the lower side in fig. 1) of the support grid 4 is 9.5mm thick gypsum board and the first wall panel 1 is 12mm thick gypsum board; the second wall panel 2 on the other side (upper side in figure 1) of the support grid 4 is 12mm thick plasterboard and the first wall panel 1 is 9.5mm thick plasterboard. Alternatively, the second wall panel 2 on one side (the lower side in fig. 1) of the support grid 4 is 12mm thick gypsum board and the first wall panel 1 is 15mm thick gypsum board; the second wall panel 2 on the other side (upper side in figure 1) of the support grid 4 is 15mm thick plasterboard and the first wall panel 1 is 12mm thick plasterboard.

The thickness and the surface density of the second wallboard 2 are different from those of the first wallboard 1, and when sound energy is transmitted between different mediums through different mediums, the attenuation speed is faster than that of the same material, so that the sound energy can be more attenuated through the structural combination, and the sound insulation purpose is achieved.

The sound insulation effect of the wall panels with different thicknesses and surface densities is described below in conjunction with three wall structures.

1. And (3) wall structure 4: sound insulation amount 4: rw (C; Ctr) 51 (-2; -7) dB

The construction method comprises the following steps: 15 thick common paper-surface gypsum board, 12 thick common paper-surface gypsum board, 75 light steel keel (filled with 50 thick rock wool), 12 thick common paper-surface gypsum board, 15 thick common paper-surface gypsum board

2. Wall structure 5: sound insulation amount 5: rw (C; Ctr) 54 (-2; -7) dB

The construction method comprises the following steps: 15 thick common paper-surface gypsum board, 12 thick common paper-surface gypsum board, 64 vibration-damping keel, 75 light steel keel (filled with 50 thick rock wool), 64 vibration-damping keel, 12 thick common paper-surface gypsum board, 15 thick common paper-surface gypsum board

3. And (6) wall structure: sound insulation amount 6: rw (C; Ctr) 50 (-3; -10) dB

The construction method comprises the following steps: 12 thick common paper-surface gypsum board, 75 light steel keel (filled with 50 thick rock wool), 12 thick common paper-surface gypsum board

TABLE 2

As can be seen from Table 2, two paper faced gypsum boards, 12mm and 15mm thick, have two different areal densities and different resonant frequencies. The resonance frequency of the paper-faced gypsum board wall with the thickness of 15mm is basically lower than the lowest 100Hz, and outside the hearing sensitive range, the gypsum board with the thickness of 15mm is preferably selected in the area with low-frequency noise as the main part, so that the resonance frequency has less influence on the sound insulation performance of the wall body with the gypsum board structure with the thickness of 15 mm. The resonance frequency of a wall body consisting of gypsum boards with the thickness of 12mm has a great influence on the sound insulation performance near 100Hz, so that the sound insulation quantity at the positions of 100Hz, 125Hz and 200Hz is greatly reduced compared with that of gypsum boards with the thickness of 15mm, mainly because of the resonance frequency, and the sound insulation quantity at the positions of 200Hz and 250Hz except the resonance frequency is close to that of the gypsum boards with the thickness of 12mm, which is because of damping control.

The resonance frequency of the double-layer board wall is related to the surface density and the board spacing of the two-layer board, and the larger the surface density is, the larger the spacing is, the smaller the resonance frequency is. Therefore, when designing a gypsum board sound insulation wall, the gypsum board with higher density is used as much as possible, and the resonant frequency of the gypsum board is lower than 100Hz as much as possible.

Meanwhile, according to the mass law, a general rule exists for sound insulation of the partition wall, namely, the heavier the material (the larger the surface density) is, the better the sound insulation effect is. For double-layer paper-faced gypsum board walls, the law of mass plays an important role, namely, the sound insulation quantity can be improved by increasing the number of layers or the thickness of the board.

Further, as can be seen from table 2, the sound insulation amount of the gypsum board composition 12 +15 thick was improved more than that of the gypsum board composition 12 +12 thick, and was particularly significant at low frequencies (160Hz or less).

Gypsum boards of different areal densities have different mating effects fc, beyond which the amount of sound insulation begins to decrease. The coincidence frequency fc of the double-layer identical plate superposition is basically identical to that of the single-layer plate, but the coincidence effect is more severe, and the coincidence valley becomes deeper. If plates of different thicknesses are used for superposition, the anastomotic valleys (anastomotic frequency) will be staggered from each other, and each anastomotic valley is shallower, which is advantageous for improving the sound insulation performance.

The larger the surface density is, the thinner the wallboard has better sound insulation performance, the larger the density is, the larger the sound insulation quantity is, the thinner the wallboard is, the higher the matching valley appeared in the medium-high frequency is, the higher the frequency deviation is, which is the result of the combined action of the mass law and the matching effect.

The strong anastomotic effect of the double-layer panels is very pronounced and results in a partition wall made up of two 15mm thick panels having an inverse sound insulation lower than a partition wall made up of two 12mm thick panels. A partition wall in which a sheet of 12mm and a sheet of 15mm thick are laminated has a lower areal density than a double 15mm partition wall, but sometimes the sound insulation is increased inversely, as a result of the anastomosis effect.

In some exemplary embodiments, as shown in fig. 4, the wall unit further comprises a decorative panel 6, the decorative panel 6 is fixed to the side of the first wall panel 1 remote from the second wall panel 2 (i.e. the outer side of the first wall panel 1), and a third sound-proof cavity 73 is formed between the decorative panel 6 and the first wall panel 1.

A third sound insulation cavity 73 is formed between the decorative panel 6 and the first wall plate 1, so that two air layers are added to the wall body, and the wall body has five air layer gaps. The vibration of the air in the air layer attenuates sound energy, and simultaneously, the sound waves are converted among different media, so that the reflection and attenuation of the sound waves are increased, the purposes of sound insulation and noise reduction are achieved, and the sound insulation performance of the wall body is further improved.

In some exemplary embodiments, as shown in fig. 4, the decorative panel 6 and the first wall panel 1 are adhesively fixed by a plurality of adhesive masses 61, and a leveling pad 62 is disposed between the decorative panel 6 and the first wall panel 1.

In some exemplary embodiments, the veneer panel 6 is outermost and may be a gypsum-based decorative sheet material (luban universal) and may be bonded to the first wall panel 1 by a bond (gypsum-based gypsum bond) 61. A leveling gasket 62 is also arranged between the decorative panel 6 and the first wall panel 1.

The trim panel 6 and the first wall panel 1 are adhesively secured by a plurality of adhesive clusters 61 to form a third acoustical cavity 73 between the trim panel 6 and the first wall panel 1. A leveling gasket 62 is arranged between the decorative panel 6 and the first wallboard 1, so that the plate surface of the decorative panel 6 is vertical and cannot be inclined, and the decorative panel 6 can be kept level and level when a plurality of walls are connected; the leveling shim 62 prevents the gypsum dough from being pressed too flat and losing water quickly, resulting in insufficient bond strength.

In addition, the decoration panel 6 is bonded on the first wall board 1 through the sticky balls, so that the whole wall body is ensured not to form a metal sound bridge of the pair-penetrating self-tapping screw and the keel, sound transmission of the sound bridge is blocked, and the purpose of sound insulation is achieved. In addition, the thickness and the surface density of the decorative panel 6 adopting the gypsum-based decorative plate, the second wallboard 2 adopting the paper-surface gypsum board and the first wallboard 1 are different, so that the sound energy is more quickly attenuated when being transmitted between different media, and more sound energy can be attenuated to achieve better sound insulation effect.

In some exemplary embodiments, the sticky mass 61 is in the shape of dots or stripes. In other exemplary embodiments, the sticky mass 61 may have other shapes, such as a block shape, etc., which is not limited in this application.

In some exemplary embodiments, as shown in fig. 5, the plurality of dough 61 is arranged in a rectangular array.

In some exemplary embodiments, as shown in FIG. 5, the dough 61 is in the shape of a dot (circle) with a diameter of 50mm or more and a thickness of 5mm or more. The thickness of the sticky ball 61 is more than or equal to 5mm, so that the thickness of the third sound insulation cavity 73 is more than or equal to 5 mm.

In some exemplary embodiments, the diameter of the dough 61 may be 50mm to 100mm, such as may be: 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm, etc.

In some exemplary embodiments, the thickness of the dough 2 may be 5mm to 10mm, such as may be 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, and the like.

In some exemplary embodiments, the spacing between adjacent clumps 61 (the spacing between center points) is ≦ 300 mm. As shown in FIG. 5, the distance S3 between two transversely adjacent sticky clumps 61 is not more than 300mm, and the distance S4 between two longitudinally adjacent sticky clumps 61 is not more than 300mm for the plurality of sticky clumps 61 arranged in a rectangular array.

In some exemplary embodiments, S3 may be equal to S4, such as: s3 and S4 may be 200mm-300mm, such as 220mm, 240mm, 260mm, 280mm, etc.

In some exemplary embodiments, the blob 61 is located at a distance of 30mm to 60mm from the edge of the trim panel 6. As shown in fig. 5, the distance between the sticky ball 61 and the vertical edge of the decorative panel 6 is S1, the distance between the sticky ball 61 and the lateral edge of the decorative panel 6 is S2, and the values of S1 and S2 range from 30mm to 60 mm.

In some exemplary embodiments, S1 may be equal to S2, such as: s1 and S2 can be 35mm, 40mm, 45mm, 50mm, 55mm, etc.

It should be understood that the diameter, thickness, and spacing S1-S4 of the dough 61 are not limited to those described above and can be adjusted as desired.

In some exemplary embodiments, as shown in fig. 4, the thickness of the third sound-insulating cavity 73 (i.e., the distance between the first wall panel 1 and the decorative panel 6 in fig. 4) is less than the thickness of the second sound-insulating cavity 72 (i.e., the distance between the second wall panel 2 and the first wall panel 1 in fig. 4), and the thickness of the second sound-insulating cavity 72 is less than the thickness of the first sound-insulating cavity 71 (i.e., the distance between two second wall panels 2 in fig. 4).

In some exemplary embodiments, the support runner 4 in the first sound-insulating cavity 71 is a C-shaped runner having dimensions of 75 x 50 x 0.6 (width x height x wall thickness in mm), the thickness of the first sound-insulating cavity 71 may be about 75mm, or slightly greater than the width of the support runner 4 (e.g., 76-77mm), the thickness of the second sound-insulating cavity 72 may be about 15mm or 25mm, and the thickness of the third sound-insulating cavity 73 may be about 5 mm.

The sound insulation cavities with different thicknesses have good sound insulation and noise reduction effects on sound waves with different frequencies, and the sound insulation cavities with three different thicknesses are matched to achieve good sound insulation and noise reduction effects on the sound waves in a wider frequency range.

In some exemplary embodiments, as shown in fig. 1 and 4, at least one of the first sound-proof cavity 71, the second sound-proof cavity 72, and the third sound-proof cavity 73 is filled with a sound-absorbing layer 9 formed of a sound-absorbing material. For example, a porous sound absorbing material such as glass wool, rock wool, or ceramic wool may be inserted into the first soundproof cavity 71, the second soundproof cavity 72, and the third soundproof cavity 73.

In some exemplary embodiments, the thickness of the sound absorption layer 9 is smaller than that of the sound insulation cavity in which the sound absorption layer is located, so that a gap is formed between the cavity wall of the sound insulation cavity and the sound absorption material filled in the sound insulation cavity, wherein the gap may be not smaller than 20mm, and of course, the size of the gap may also be adjusted according to needs.

In some exemplary embodiments, as shown in fig. 1 and 4, a gap of not less than 20mm is formed between one cavity wall (the upper cavity wall in fig. 1 and 4) of the first sound-proof cavity 71 and the sound-absorbing layer 9, so that the sound-absorbing layer 9 is not tightly packed in the first sound-proof cavity 71, and the sound-absorbing layer 9 does not form a sound bridge between the two second wall panels 2, thereby achieving better sound absorption and noise reduction effects. The other chamber wall of the first sound-insulating cavity 71 (the chamber wall on the lower side in fig. 1 and 4) can be in contact with the sound-absorbing layer 9, facilitating the filling installation of the sound-absorbing layer 9. Of course, the first sound-insulating cavity 71 may have a gap between only one cavity wall (the cavity wall located on the upper side or the lower side in fig. 1 and 4) and the sound-absorbing layer 9 filled in the sound-insulating cavity, or a gap between both cavity walls (the cavity walls located on the upper side and the lower side in fig. 1 and 4) and the sound-absorbing layer 9 filled in the sound-insulating cavity.

In some exemplary embodiments, the side panels of two adjacent wall panels are staggered, and the side panels of the second wall panels 2 of two wall panels are staggered.

In the multilayer wallboard of compound sound insulation wall body, the curb plate limit of adjacent two-layer wallboard is crisscross to be set up, and the curb plate limit of nonadjacent wallboard can be located the parallel and level, perhaps crisscross setting. That is, decorative panel 6 sets up with the curb plate limit of adjacent first wallboard 1 is crisscross, and second wallboard 2 sets up with the curb plate limit of adjacent first wallboard 1 is crisscross, and the curb plate limit of two adjacent second wallboards 2 is crisscross, and when actual erection construction, the seam that adjacent two-layer wallboard department formed is crisscross to be set up like this, realizes the stagger joint installation, avoids forming through seam sound leakage, influences the sound insulation effect.

In some exemplary embodiments, when different sound insulation composite walls are connected, the joints between the second wall panels 2 and the joints between the first wall panels 1 are filled with sealing materials.

During actual installation and construction, the side face of the sound insulation composite wall body can be connected with another sound insulation composite wall body or a side wall, so that a seam is formed at the side plate edge of the second wall plate 2 and the first wall plate 1, and caulking gypsum (such as plaster gypsum and other materials) can be smeared at the seam for sealing and filling, so that sound leakage at the seam is further prevented.

In some exemplary embodiments, as shown in fig. 6, the sound insulation composite wall further includes junction boxes 10 installed on the wall units, and a sound insulation layer 41 is disposed between two adjacent junction boxes 10 on the wall units on both sides. Among them, the sound insulation layer 41 may be formed of a sound insulation material.

Set up sound insulation layer 41 on the wall body unit of both sides and between two adjacent terminal boxes 10, be located the wall body unit of both sides promptly and two adjacent terminal boxes 10 are located the both sides of sound insulation layer 41 respectively, avoided the sound wave to get into from the terminal box 10 of one side, after passing first sound insulation cavity 71, directly spread from the terminal box 10 of opposite side, sound insulation layer 4 can block the transmission of sound wave between the terminal box 10 of both sides, avoided taking place the sound leakage in terminal box 10 department, make compound sound insulation wall body have good sound insulation effect.

In some exemplary embodiments, as shown in fig. 6, one or more supporting keels 4 are provided between two adjacent junction boxes 10 on the wall units on both sides, and at least one of the one or more supporting keels 4 is provided with a sound insulation layer 41.

In some exemplary embodiments, as shown in fig. 6, the sound insulation layer 4 is perpendicular to the wall units on both sides, and both ends of the sound insulation layer 4 extend to the wall units on both sides respectively. The sound insulation layer 4 is in butt contact with the wall units on the two sides, so that sound leakage from the junction box 10 is avoided after sound waves pass through gaps between the sound insulation layer 4 and the wall units.

In other exemplary embodiments, the end of the sound insulation layer 4 may not be in abutting contact with the wall unit, and the gap between the two may be sealed with a sealant. The gap between the sound insulation layer 4 and the wall unit is sealed by the sealant, so that sound leakage at the gap is prevented, and the sound insulation composite wall still has good sound insulation performance.

In some exemplary embodiments, as shown in fig. 6, the junction box 10 is embedded in and extends through the wall unit, and a sealing member 102 may be disposed at a gap between the junction box 10 and the wall unit.

As shown in fig. 6, the junction box 10 passes through the decorative panel 6, the first wall panel 1 and the second wall panel 2. The gap between the junction box 10 and the decorative panel 6 can be filled with sealant.

The junction box 10 located on one side (upper side in fig. 6, left side of paper) of the support keel 4 penetrates the decorative panel 6, the first wall panel 1 and the second wall panel 2 on one side (upper side in fig. 6, left side of paper) of the support keel 4, and the junction box 10 located on the other side (lower side in fig. 6, right side of paper) of the support keel 4 penetrates the decorative panel 6, the first wall panel 1 and the second wall panel 2 on the other side (lower side in fig. 6, right side of paper) of the support keel 4, so that the sound insulation effect at the junction box 10 is weakened. In order to avoid sound leakage at the junction box 10, two junction boxes 10 which are located on two sides of the sound insulation composite wall and are adjacently arranged are respectively arranged on two sides of a support keel 4 provided with a sound insulation layer 41, namely at least one support keel 4 is arranged between the two junction boxes 10, and the sound insulation layer 41 is arranged on the support keel 4 (if a gypsum board is arranged on the support keel 4, the sound insulation layer 41 is formed), so that a good sound insulation effect is achieved.

In some exemplary embodiments, as shown in fig. 6, the exterior of the junction box 10 is provided with an outer casing 101 with one open end, which can wrap five sides of the junction box 10 except the front side. At least one layer of the outer envelope 101 is made of sound insulating material. Specifically, the outer case 101 includes a two-layer case, wherein the inner case may be made of rubber and wrapped outside the case body of the junction box 10, and the outer case may be made of gypsum board and wrapped outside the inner case. Of course, the outer envelope 101 is not limited to including a two-layer envelope, and the material of the envelope is not limited to rubber, gypsum board.

In some exemplary embodiments, the box of the junction box 10 is made of sound insulation material. Specifically, the box body of the junction box 10 can use a special sound insulation junction box body 10 made of gypsum base and other materials.

The outer casing 101 and the box body made of sound insulation material can prevent sound from being transmitted from the junction box 10, and further enhance the sound insulation effect of the wall.

In some exemplary embodiments, as shown in fig. 7, the sound insulation composite wall further includes a ceiling keel 11 disposed above, a floor keel 12 disposed below, and a vertical keel disposed at a side portion, wherein sound insulation materials are disposed on the ceiling keel 11, the floor keel 12, and the vertical keel 14.

When the wall body is actually installed, the wall body passes through ceiling keel 11 and is connected with the upper floor slab, be connected with the lower floor slab through ground keel 12, be connected with the side wall through vertical keel 14, ceiling keel 11, ground keel 12, vertical keel can be U type fossil fragments, C type fossil fragments etc., can set up sound insulation material such as sound insulation strip or sound insulation sealant in the bottom surface of U type fossil fragments, C type fossil fragments, the sealed joint filling of materials such as plaster is smeared to the seam crossing all around of wall body simultaneously, prevent that the wall body from leaking sound all around, lead to the wall body sound insulation effect to descend.

In some exemplary embodiments, the vertical spacing between the laterally disposed shock absorbing runners 3 may be no greater than 600mm, and the lateral spacing between the vertically disposed support runners 4 may be 600 mm. Figure 7 shows the arrangement structure of each keel in the sound insulation composite wall body with the height of 3.0 meters. A plurality of 3 top-down equidistant settings of shock attenuation fossil fragments, a plurality of support fossil fragments 4 are from the equidistant setting of left hand right side. The sound insulation composite wall further comprises through keels 13, and after the frameworks of the support keels 4 are built, the through keels 13 penetrate through the support keels 4 so as to connect all the support keels 4 together to form a whole.

According to the sound insulation composite wall body, the shock absorption keel, the sound blocking bridge, the sound insulation cavity and the multilayer wallboard are combined by multiple materials, and the sound absorption material is arranged to attenuate sound waves, so that sound absorption is realized; through setting up the stagger joint installation, dodging the through joint, sealed terminal box, wall body are sealed all around, prevent the sound leakage, realize the sound insulation. The sound insulation composite wall has sound insulation quantity improved by at least 1-2 decibels for sound waves above 100Hz or medium and high frequencies compared with the sound insulation quantity of the existing wall.

Although the embodiments disclosed in the present application are described above, the descriptions are only for the convenience of understanding the present application, and are not intended to limit the present application. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims.

Claims

1. An acoustical insulation composite wall, comprising: the wall unit of vertical setting with set up in the wall unit of support fossil fragments both sides, the wall unit include first wallboard, second wallboard and set up in first wallboard with shock attenuation fossil fragments between the second wallboard, first wallboard is located the second wallboard is kept away from one side of support fossil fragments, both sides form first sound insulation cavity between the wall unit, first wallboard with be formed with second sound insulation cavity between the second wallboard.

2. A sound insulation composite wall as claimed in claim 1, wherein the vibration-damping keel comprises a first fixing arm, a connecting arm and a second fixing arm which are connected in sequence, the first fixing arm and the second fixing arm are parallel, the connecting arm is arranged in an inclined manner, one end of the connecting arm connected with the second fixing arm is inclined towards one side far away from the first fixing arm, the first fixing arm is fixedly connected with the second wall board, and the second fixing arm is fixedly connected with the first wall board.

3. The sound insulation composite wall of claim 2, wherein an end of the second fixing arm away from the first fixing arm is provided with a supporting edge, the supporting edge is bent towards the second wall plate, and a gap is formed between the supporting edge and the second wall plate;

the supporting edge is a straight edge which is arranged vertically relative to the second fixing arm, or the supporting edge is a bevel edge which is arranged obliquely relative to the second fixing arm, and an included angle between the supporting edge and the second fixing arm is an obtuse angle.

4. An acoustical insulating composite wall of claim 3, wherein the gap between said support edge and said second wall panel is between 3mm and 12 mm.

5. The sound insulation composite wall of claim 2, wherein an end of the first fixing arm away from the second fixing arm is provided with a rolled edge, the rolled edge is bent towards a side where the first wall plate is located, and a gap is formed between the rolled edge and the first wall plate.

6. An acoustical insulation composite wall as in any one of claims 1-5, wherein both ends of said vibration dampening grid are free ends.

7. An acoustical insulating composite wall of any one of claims 1-5, wherein acoustical insulating strips are disposed between the vibration dampening furring channel and the first wall panel, between the vibration dampening furring channel and the second wall panel, and between the support furring channel and the wall element.

8. The sound-insulating composite wall body according to any one of claims 1 to 5, wherein the vibration-absorbing keel and the first wall plate are fixed through a first fastener, the vibration-absorbing keel and the second wall plate and the support keel are fixed through a second fastener, the second wall plate and the support keel are fixed through a third fastener, the first fastener and the second fastener are arranged in a staggered mode, and the first fastener and the third fastener are arranged in a staggered mode.

9. A sound-insulating composite wall body according to any one of claims 1 to 5, wherein the second wall panels of the wall elements on both sides have the same plate thickness, the first wall panels of the wall elements on both sides have the same plate thickness, and the second wall panels have the same or different plate thicknesses as the first wall panels;

or the second wall plates of the wall units on two sides have different plate thicknesses, the first wall plates of the wall units on two sides have different plate thicknesses, and the second wall plate of the wall unit on one side has the same plate thickness as the first wall plate of the wall unit on the other side.

10. An acoustical insulating composite wall according to any one of claims 1-5, wherein said wall unit further comprises a decorative panel secured to a side of said first wall panel remote from said second wall panel, said decorative panel and said first wall panel defining a third acoustical insulating cavity therebetween.

11. An acoustical insulating composite wall according to claim 10, wherein said decorative panel and said first wall panel are adhesively secured by a plurality of adhesive clusters, and wherein a leveling shim is disposed between said decorative panel and said first wall panel.

12. An acoustically insulating composite wall as claimed in claim 10 in which the thickness of said third acoustically insulating cavity is less than the thickness of said second acoustically insulating cavity, and the thickness of said second acoustically insulating cavity is less than the thickness of said first acoustically insulating cavity.

13. The sound-insulation composite wall body of claim 10, wherein at least one of the first sound-insulation cavity, the second sound-insulation cavity and the third sound-insulation cavity is filled with a sound-absorption layer formed by a sound-absorption material, and the thickness of the sound-absorption layer is smaller than that of the sound-insulation cavity in which the sound-absorption layer is arranged.

14. A sound-insulating composite wall body according to any one of claims 1-5, wherein in the wall body unit, the side plate edges of two adjacent layers of wall boards are staggered;

the side plates of the second wall plates of the wall units on the two sides are arranged in a staggered mode.

15. The sound insulation composite wall body as claimed in any one of claims 1 to 5, further comprising junction boxes mounted on the wall units, wherein a sound insulation layer is arranged between two adjacent junction boxes on the wall units on two sides.

16. An acoustic insulation composite wall as claimed in claim 15, wherein one or more supporting keels are provided between two adjacent junction boxes on the wall units on both sides, and at least one of the one or more supporting keels is provided with the acoustic insulation layer.

17. An acoustical insulation composite wall according to claim 15, wherein said junction box is externally provided with an open-ended outer casing comprising at least one shell layer made of acoustical insulation material; or the box body of the junction box is made of sound insulation materials.