Sound absorption and insulation suspended ceiling structure

Abstract

The invention discloses a sound absorption and insulation suspended ceiling structure which comprises a sound absorption layer installed at the bottom of a structural floor slab, the side face of the sound absorption layer is fixed to a building wall, a cement mortar leveling layer and a wood floor are arranged at the top of the structural floor slab, and covering keels which are horizontally distributed are arranged below the sound absorption layer. A gypsum board parallel to the structural floor slab is arranged below the covering keel, and a suspended ceiling cavity is defined by the structural floor slab, the building wall body and the gypsum board; a plurality of U-shaped mounting clamps are arranged between the covering keels and the structural floor slab, the middles of the U-shaped mounting clamps are embedded in the sound absorption layer and connected with the bottom of the structural floor slab through damping washers, the two ends of each U-shaped mounting clamp are connected with the covering keels correspondingly, and edge keels used for bearing the edges of the covering keels are arranged on the wall face of the building wall. The gypsum board is connected with the bottom of the covering keel, and the joint between the gypsum board and the building wall is filled with sealant. The structure has the advantages of being small in structural load, small in occupied floor height and high in air sound insulation performance.

Description

Technical Field

[0001] This invention relates to the field of ceiling structure technology, and in particular to a sound-absorbing and sound-insulating ceiling structure. Background Technology

[0002] In southern China, represented by Guangdong, there is no need for thermal insulation, and the bedroom floors consist of a structural floor slab with a wooden floor surface. This type of floor slab can meet the impact sound insulation performance requirements of the "Residential Project Code," but because the floor slab is too thin (the overall thickness is usually around 140mm), the airborne sound insulation performance does not meet the requirements of the "Residential Project Code."

[0003] To improve airborne sound insulation performance, there are generally two methods:

[0004] (1) The first method is to add a concrete layer (usually 40mm) between the structural floor slab and the wooden floor surface. This method requires less floor height, but the surface density of the concrete layer is high (approximately 96kg / m²). 2 This significantly increases the load on the floor slab structure, resulting in increased structural costs.

[0005] (2) The second method is to construct a soundproof ceiling (usually installed using vertical hangers) below the structural floor slab (i.e., the roof of the lower floor), thereby creating a "mass-spring-mass" system. This method has a lower surface density than the first method. However, the vertical hanger installation usually requires the use of vibration dampers to solve the vibration transmission problem, resulting in a significant increase in floor height (traditional hangers and fittings require 100mm). For example, Chinese utility model patent CN218028405U discloses a sound-absorbing and sound-insulating ceiling structure, which suspends the sound-absorbing cotton layer and composite sound insulation board below the original floor slab using hangers and vibration dampers. According to its patent disclosure, the total thickness, excluding the hangers and vibration dampers, is already 100mm, and with the length of the hangers and vibration dampers added, the structure is expected to occupy 150mm of floor height.

[0006] Therefore, there is an urgent need for a sound-absorbing and sound-insulating suspended ceiling structure with low structural load and low floor height requirement, which can be used to improve the airborne sound insulation performance of floors where there is no need for thermal insulation and wooden flooring is laid directly on the structural floor. Summary of the Invention

[0007] The purpose of this invention is to provide a sound-absorbing and sound-insulating ceiling structure, which has the advantages of low structural load, low floor height occupation, and high airborne sound insulation performance. It effectively solves the problems of high floor height occupation and significantly increased floor structural load in existing treatment methods for floor slab structures such as "structural floor slab + wooden floor surface layer" which do not require thermal insulation.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A sound-absorbing and insulating suspended ceiling structure includes a sound-absorbing layer installed at the bottom of a structural floor slab. The sides of the sound-absorbing layer are fixed to the building wall. The top of the structural floor slab is provided with a cement mortar leveling layer and a wooden floor distributed sequentially from bottom to top. Below the sound-absorbing layer are several horizontally distributed facing joists. Below the facing joists are gypsum boards distributed parallel to the structural floor slab. The structural floor slab, the building wall, and the gypsum boards enclose a suspended ceiling cavity. Several U-shaped mounting clips are provided between the facing joists and the structural floor slab. The middle of the U-shaped mounting clips is embedded in the sound-absorbing layer and connected to the bottom of the structural floor slab through vibration damping washers. The two ends of the U-shaped mounting clips are respectively connected to the facing joists. The wall surface of the building wall is provided with edge joists for supporting the edges of the facing joists. The bottom of the gypsum board is connected to the facing joists, and the connection between the side wall of the gypsum board and the building wall is filled with sealant.

[0010] Furthermore, the cladding keel is a channel steel with a C-shaped cross-section, the edge keel is an angle steel with an L-shaped cross-section, and the U-shaped mounting clip is a metal bending member with a U-shaped cross-section.

[0011] Furthermore, the keel covering the surface is distributed at equal intervals, with the distance between two adjacent keels covering the surface being 200mm to 400mm.

[0012] Furthermore, the gypsum board is composed of several gypsum sub-boards spliced ​​together, and the joints between two adjacent gypsum boards are filled with sealant.

[0013] Furthermore, the sound-absorbing layer is polyester fiber sound-absorbing cotton.

[0014] Furthermore, the middle part of the U-shaped mounting clip is fixedly connected to the bottom of the structural floor slab by self-tapping screws, and the two ends of the U-shaped mounting clip are fixedly connected to the cladding keel by self-tapping screws respectively; the edge keel is fixedly connected to the wall surface of the building wall by self-tapping screws, and the gypsum board is fixedly connected to the bottom of the cladding keel by self-tapping screws.

[0015] Furthermore, the total thickness of the ceiling cavity and the gypsum board is 60mm~80mm.

[0016] Furthermore, the thickness of the sound-absorbing layer is 20mm~30mm.

[0017] Furthermore, the distance between the sound-absorbing layer and the gypsum board is 20mm~40mm.

[0018] Furthermore, the thickness of the gypsum board is 9.5mm to 12mm.

[0019] Compared with the prior art, the present invention provides a sound-absorbing and sound-insulating ceiling structure, which has the following beneficial effects:

[0020] (1) The present invention adopts an installation structure of U-shaped mounting clip combined with shock-absorbing washers. The U-shaped mounting clip is directly fixed to the bottom of the structural floor slab, and shock-absorbing washers are set at the fixing point, thereby replacing the traditional vertical hanger structure. This avoids the sound bridge formed by rigid connection, reduces vibration transmission, and significantly reduces the floor height occupied.

[0021] (2) The sound-absorbing layer at the bottom of the structural floor slab absorbs the airborne sound passing through the structural floor slab, and the sealant seals the gypsum board. The structural floor slab, building walls and gypsum board form a ceiling cavity of a certain thickness, which becomes the "spring" structure in the "mass-spring-mass" system. It can buffer the airborne sound, thereby improving the airborne sound insulation performance and solving the problem of insufficient airborne sound insulation performance of wooden floor.

[0022] (3) The present invention uses lightweight structures such as sound-absorbing layers and gypsum board, resulting in a low overall surface density (expected structural surface density <30kg / m). 2 It has a more compact overall thickness (approximately 60mm~80mm), which reduces the impact on the floor structure load and saves building floor height.

[0023] (4) The present invention adopts wall installation, which eliminates the need for traditional vertical hangers, allowing the keel system to be installed more compactly, and further effectively reducing the structural height. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the connection at the U-shaped mounting clip of the present invention.

[0027] Attached reference numerals: 1. Structural floor slab; 2. Building wall; 3. Cement mortar leveling layer; 4. Wooden floor; 5. Sound-absorbing layer; 6. Facing joists; 7. Gypsum board; 8. Ceiling cavity; 9. U-shaped mounting clip; 10. Vibration damping washer; 11. Self-tapping screw; 12. Edge joists; 13. Sealant. Detailed Implementation

[0028] The technical solution of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature and the second feature are in direct contact, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] The present invention will now be described in further detail through detailed embodiments and in conjunction with the accompanying drawings.

[0033] Example 1

[0034] Please refer to Figure 1 and Figure 2This embodiment provides a sound-absorbing and sound-insulating suspended ceiling structure, including a sound-absorbing layer 5 installed at the bottom of a structural floor slab 1. The sides of the sound-absorbing layer 5 are fixed to the building wall 2. The top of the structural floor slab 1 is provided with a cement mortar leveling layer 3 and a wooden floor 4 arranged sequentially from bottom to top. Below the sound-absorbing layer 5 are several horizontally distributed covering joists 6. Below the covering joists 6 are gypsum boards 7 arranged parallel to the structural floor slab 1. The structural floor slab 1, the building wall 2, and the gypsum boards 7 enclose a suspended ceiling. Cavity 8; Several U-shaped mounting clips 9 are provided between the facing keel 6 and the structural floor slab 1. The middle part of the U-shaped mounting clip 9 is embedded in the sound-absorbing layer 5 and connected to the bottom of the structural floor slab 1 through the shock-absorbing washer 10. The two ends of the U-shaped mounting clip 9 are respectively connected to the facing keel 6. The wall surface of the building wall 2 is provided with edge keel 12 for supporting the edge of the facing keel 6. The gypsum board 7 is connected to the bottom of the facing keel 6. The connection between the side wall of the gypsum board 7 and the building wall 2 is filled with sealant 13.

[0035] The above structural design achieves the following effects:

[0036] Firstly, the sound-absorbing layer 5 located at the bottom of the structural floor slab 1 absorbs the airborne sound passing through the structural floor slab 1, and the sealant 13 seals the gypsum board 7. The structural floor slab 1, the building wall 2, and the gypsum board 7 form a ceiling cavity 8 of a certain thickness, which becomes a "spring" structure in the "mass-spring-mass" system. This can buffer the airborne sound, thereby improving the airborne sound insulation performance and solving the problem of insufficient airborne sound insulation performance of wooden floors.

[0037] Secondly, an installation structure combining U-shaped mounting clips 9 and vibration damping washers 10 is adopted. The U-shaped mounting clips 9 are directly fixed to the bottom of the structural floor slab 1, and vibration damping washers 10 are set at the fixing point, thereby replacing the traditional vertical hanger structure. This avoids the sound bridge formed by rigid connection, reduces vibration transmission, and significantly reduces the floor height occupied.

[0038] Thirdly, the use of lightweight structures such as sound-absorbing layer 5 and gypsum board 7 results in a lower overall surface density and a more compact overall thickness, which reduces the impact on the floor structure load and saves on building height.

[0039] Fourthly, wall mounting eliminates the need for traditional vertical hangers, allowing for a more compact installation of the keel system and further reducing the structural height.

[0040] In some specific implementation methods, such as Figure 1 and Figure 2 As shown, the facing keel 6 is a channel steel with a C-shaped cross-section, the edge keel 12 is an angle steel with an L-shaped cross-section, and the U-shaped mounting clip 9 is a metal bending component with a U-shaped cross-section.

[0041] In some specific embodiments, the cladding joists 6 are evenly spaced, with the distance between two adjacent cladding joists 6 being 200mm to 400mm. As an example, the distance between two adjacent cladding joists 6 can be set to 300mm.

[0042] In some specific embodiments, the gypsum board 7 is composed of several gypsum sub-boards spliced ​​together, and the joints between two adjacent gypsum boards are filled with sealant 13. This facilitates construction and installation, and the sealant is used to fill and seal, thereby improving airborne sound insulation performance.

[0043] In some specific implementations, the sound-absorbing layer 5 is made of polyester fiber sound-absorbing cotton, which has a good airborne sound absorption effect.

[0044] In some specific implementation methods, such as Figure 1 and Figure 2 As shown, the middle of the U-shaped mounting clip 9 is fixedly connected to the bottom of the structural floor slab 1 by self-tapping screws 11, and both ends of the U-shaped mounting clip 9 are fixedly connected to the facing keel 6 by self-tapping screws 11. The edge keel 12 is fixedly connected to the wall surface of the building wall 2 by self-tapping screws 11, and the gypsum board 7 is fixedly connected to the bottom of the facing keel 6 by self-tapping screws 11. Since a standardized installation and fixing method using self-tapping screws is adopted, the construction and installation efficiency can be improved.

[0045] In some specific implementations, the total thickness of the ceiling cavity 8 and the gypsum board 7 is 60mm~80mm; the thickness of the sound-absorbing layer 5 is 20mm~30mm, the thickness of the gypsum board 7 is 9.5mm~12mm, and the distance between the sound-absorbing layer 5 and the gypsum board 7 is 20mm~40mm. This arrangement achieves high airborne sound insulation performance, reduces the impact on the floor structure load, and saves on building height.

[0046] As an example, in a specific construction application, the total thickness of the ceiling cavity 8 and the gypsum board 7 is set to 62mm; wherein, the thickness of the sound-absorbing layer 5 is set to 20mm, the thickness of the gypsum board 7 is set to 12mm, and the distance between the sound-absorbing layer 5 and the gypsum board 7 is set to 30mm.

[0047] The above embodiments are merely illustrative of the concept and technical solution of the present invention and are not intended to limit the present invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sound-absorbing and sound-insulating suspended ceiling structure, comprising a sound-absorbing layer installed at the bottom of a structural floor slab, the side of the sound-absorbing layer being fixed to a building wall, and the top of the structural floor slab being provided with a cement mortar leveling layer and a wooden floor distributed sequentially from bottom to top, characterized in that, Below the sound-absorbing layer are several horizontally distributed facing keels. Below the facing keels are gypsum boards distributed parallel to the structural floor slab. The structural floor slab, the building wall, and the gypsum boards enclose a ceiling cavity. Several U-shaped mounting clips are provided between the facing keels and the structural floor slab. The middle of the U-shaped mounting clips is embedded in the sound-absorbing layer and connected to the bottom of the structural floor slab through a damping washer. The two ends of the U-shaped mounting clips are connected to the facing keels. The wall surface of the building wall is provided with edge keels to support the edges of the facing keels. The bottom of the gypsum board is connected to the facing keels, and the connection between the side wall of the gypsum board and the building wall is filled with sealant.

2. The sound-absorbing and sound-insulating ceiling structure according to claim 1, characterized in that, The cladding keel is a C-shaped channel steel, the edge keel is an L-shaped angle steel, and the U-shaped mounting clip is a U-shaped metal bending component.

3. The sound-absorbing and sound-insulating ceiling structure according to claim 1, characterized in that, The keel covering the surface is distributed at equal intervals, with the distance between two adjacent keels being 200mm to 400mm.

4. The sound-absorbing and sound-insulating ceiling structure according to claim 1, characterized in that, The gypsum board is composed of several gypsum sub-boards spliced ​​together, and the joints between two adjacent gypsum boards are filled with sealant.

5. The sound-absorbing and sound-insulating ceiling structure according to claim 1, characterized in that, The sound-absorbing layer is made of polyester fiber sound-absorbing cotton.

6. The sound-absorbing and sound-insulating ceiling structure according to claim 1, characterized in that, The middle part of the U-shaped mounting clip is fixedly connected to the bottom of the structural floor slab by self-tapping screws, and the two ends of the U-shaped mounting clip are fixedly connected to the cladding keel by self-tapping screws respectively; the edge keel is fixedly connected to the wall surface of the building wall by self-tapping screws, and the gypsum board is fixedly connected to the bottom of the cladding keel by self-tapping screws.

7. The sound-absorbing and sound-insulating suspended ceiling structure according to any one of claims 1 to 6, characterized in that, The total thickness of the ceiling cavity and the gypsum board is 60mm~80mm.

8. The sound-absorbing and sound-insulating ceiling structure according to claim 7, characterized in that, The thickness of the sound-absorbing layer is 20mm~30mm.

9. The sound-absorbing and sound-insulating ceiling structure according to claim 7, characterized in that, The distance between the sound-absorbing layer and the gypsum board is 20mm~40mm.

10. The sound-absorbing and sound-insulating ceiling structure according to claim 7, characterized in that, The thickness of the gypsum board is 9.5mm to 12mm.

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