CN210194935U

CN210194935U - Floor vibration-damping sound-insulation board

Info

Publication number: CN210194935U
Application number: CN201920726247.XU
Authority: CN
Inventors: Haoqiang Chen; 陈浩强
Original assignee: Institute Of Architectural Design Guangdong University Of Technology
Current assignee: Institute Of Architectural Design Guangdong University Of Technology
Priority date: 2019-05-20
Filing date: 2019-05-20
Publication date: 2020-03-27
Anticipated expiration: 2029-05-20

Abstract

The utility model discloses a floor damping sound-proof board, include: bear grid (1), drawknot muscle (2), sound insulation filler material (3), bear grid (1) and arrange according to honeycomb, bear grid (1) for not having the bottom structure, the cavity that encloses is used for filling sound insulation filler material (3) in the bars wall (101) of bearing grid (1), it is equipped with drawknot muscle (2) to bear grid (1) top. The utility model realizes a structure integrating sound insulation, vibration reduction, heat insulation and heat preservation functions by filling the sound insulation material with the grid of the honeycomb structure, and improves the compression strength and sound insulation performance of the sound insulation board; the polymer bearing grid has higher bearing capacity, and the floating building surface layer does not need a reinforcing mesh, so that the manufacturing cost is greatly reduced; the material is light and convenient for construction and cutting.

Description

Floor vibration-damping sound-insulation board

Technical Field

The utility model relates to a building sound insulation technical field, more specifically relates to a floor damping sound-proof board.

Background

Noise pollution causes many damages to physical and psychological health of people, and controlling indoor noise level has become one of important works for indoor environment design. In China, the average residential building area is completed every year for nearly 10 years, and the residential floor noise problem is particularly important to be solved, wherein the residential building area is 7.7 hundred million square meters. Floor impact sounds are generated when objects impact the floor, causing the floor to vibrate and be transmitted to the underlying floor through the rigid connection of the structure. The impact sound insulation performance of the floor slab is directly related to the influence degree of the movement of the upper layer users on the lower layer users. The greater the impact sound pressure level, the greater the impact on the underlying user. According to the measurement, the air sound insulation quantity of the reinforced concrete floor slab with the thickness of 120mm is 48 dB-50 dB, but the weighted standardized impact sound pressure level is more than 80dB, so effective construction measures are adopted to reduce the weighted standardized impact sound pressure level of the floor slab.

The current sound insulation method for buildings mainly comprises three methods:

1. elastic layer

The method comprises the following steps: i.e. carpet, plastic floor or wood floor, etc. are laid on the concrete floor.

The method is characterized in that: most of the materials are soft, the cleaning and maintenance in public places are inconvenient, the application range has certain limitations, the material price is higher, the color, the material and the style are well thought, and the materials are more suitable for projects with professional indoor decoration designs.

2. Floating floor

The method comprises the following steps: laying a sound insulation and vibration reduction cushion layer on the concrete floor, making a reinforcing steel bar and fine stone concrete layer with the thickness not less than 40mm on the cushion layer, and then laying various surface layers according to the design requirements.

The method is characterized in that: the decorative style of the surface layer is not influenced by the sound insulation material. According to "sound absorbing materials and sound insulating materials for buildings" (second edition of 5 months 2012):

in the formula, Δ L represents an improvement value in sound insulation of impact sound in dB; f. of₀The natural frequency of the surface layer and the elastic cushion layer system is in Hz; f the frequency of the impact noise,the unit is Hz;

the natural frequency of the facing and resilient cushion system can be expressed by the following equation:

wherein E represents the modulus of elasticity of the cushion material in kg/m²(ii) a m represents the areal density of the facing material in kg/m²(ii) a d represents the thickness of the mat material in m.

The thicker the cushion material is, the better the impact sound insulation performance is, and the more the surface layer steel bar is used. The national standard general diagram is 'building sound insulation and absorption structure' 08J931 and a Chinese standard diagram 'civil building sound insulation and absorption structure' 15ZJ502, a sound insulation cushion layer is made of 5-10 mm thick rubber, polyethylene and polyurethane materials, and thick plates such as glass wool boards and extruded sheets are adopted, and the floor slabs of the structures can reach the standard of 60-65 dB of impact sound isolation. To satisfy L_nT，wLess than or equal to 55dB, and the thickness of the sound insulation pad is generally more than 20 mm. The elastic material has low compression strength and large deformation after bearing, so the sound insulation cushion layer is usually not thick, and the surface layer fine stone concrete layer must be added with a reinforcing mesh to prevent sinking and cracking. The structure is complicated, is equivalent to a double-layer floor slab, and the floor load, the consumption of reinforcing steel bars, concrete and the like are correspondingly increased, so that the whole construction cost of the building is increased, and the construction unit is unwilling to adopt the construction method. In order to reduce the manufacturing cost and simplify the floating construction method, a rubber polyurethane sound insulation pad or sound insulation coating with the thickness of 2-3 mm is adopted, the cement mortar with the thickness of 40mm is adopted to replace a steel bar fine stone concrete layer due to thinness and small relative compression deformation, and L is detected_nT，w74dB, satisfy the requirement of regulation reluctantly, the surface course is easy hollowly, the fracture, user's evaluation is not high.

According to the 'building interior decoration design fire protection code' GB 50222-2017, most building floors are required to be not lower than B1 level, and important building floors are required to be A level. The flame-retardant processed sound insulation material of the common electronic cross-linked polyethylene, rubber and polyurethane has the combustion performance grade of only B2 grade, and does not meet the requirement of fire protection specification.

3. Sound insulation mortar

The method comprises the following steps: laying sound insulation mortar with the thickness of more than 30mm on the concrete floor, wherein the sound insulation mortar mainly comprises perlite, vitrified micro bubbles and polyphenyl granule thermal insulation mortar, and then laying a surface layer.

The method is characterized in that: belongs to a slurry type heat insulation material, the product quality is unstable, the construction process is difficult to control, and the environment is polluted in the storage and stirring processes of raw materials. Unstable sound-insulating effect, L_nT，wIs more than or equal to about 70dB, belongs to a loose porous material, is not firmly adhered to a surface layer material, and is easy to absorb water, permeate water and hollowly.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome among the above-mentioned prior art defect that floor building sound insulation effect is unsatisfactory, with high costs, the structure is complicated, provide a floor damping sound-proof board.

The technical scheme of the utility model as follows:

a floor vibration damping and sound insulating panel comprising: the bearing grating is arranged in a honeycomb manner, the bearing grating is of a bottomless structure, a cavity formed by the grating walls of the bearing grating is used for filling the sound insulation filling material, and the top of the bearing grating is provided with the tie bars. The honeycomb structure is adopted, the compressive strength is high, the honeycomb structure is used for bearing upper load, thicker sound insulation filling materials are filled in the middle, and the sound insulation performance is higher. The filling material has the functions of heat insulation and preservation, reduces the energy consumption of indoor air conditioning and heating, and improves the comfort level of indoor environment.

In this scheme, bear the weight of the grid and be modified polymer HDPE structure. The modified high polymer HDPE (high density polyethylene) is environment-friendly, nontoxic, impact-resistant, ageing-resistant, ultraviolet-resistant, wear-resistant, corrosion-resistant, good in flame retardance and recyclable.

In the scheme, the thickness of the grid wall of the bearing grid is 2 mm. Floor loads are transmitted to the floor slab through the load-bearing grid, and since HDPE is an elastomeric material, the acoustic energy transmitted through a 2mm thick grid wall is small.

In the scheme, the tie bar is of a 2mm modified high-molecular HDPE structure.

In the scheme, the sound insulation filling material is an extruded polystyrene foam plastic plate or a glass fiber plate. The extruded polystyrene foam plastic plate has good vibration reduction, compression resistance, heat preservation and permeability resistance. The glass fiber board has good moisture resistance and is suitable for places with high fireproof requirements.

In the scheme, the bearing grating is formed by splicing a plurality of unit gratings which are in regular hexagonal column shapes.

In the scheme, the height of the bearing grating is 10mm-50 mm.

Compared with the prior art, the utility model discloses technical scheme's beneficial effect is:

the utility model realizes a structure integrating sound insulation, vibration reduction, heat insulation and heat preservation functions by filling the sound insulation material with the grid of the honeycomb structure, and improves the compression strength and sound insulation performance of the sound insulation board; the polymer bearing grid has higher bearing capacity, and the floating building surface layer does not need a reinforcing mesh, so that the manufacturing cost is greatly reduced; the material is light and convenient for construction and cutting.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a perspective view of the present invention in use.

FIG. 3 is a schematic cross-sectional view of the structure of example 1.

FIG. 4 is a schematic cross-sectional view of the structure of example 2.

FIG. 5 is a schematic cross-sectional view of the structure of example 3.

Fig. 6 is a schematic plan view of a carrier grid.

Fig. 7 is a schematic cross-sectional view of a carrier grid.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.

Example 1

Fig. 1 shows a floor vibration-damping sound-insulating board, comprising: bear grid 1, lacing wire 2, sound insulation filler material 3, bear grid 1 and arrange according to honeycomb, bear grid 1 and be the structure of no end, the cavity that the bars wall 101 that bears grid 1 encloses is used for bearing sound insulation filler material 3, bear 1 tops of grid and be equipped with lacing wire 2. The bearing grating 1 is formed by splicing a plurality of unit gratings in regular hexagonal column shapes.

It should be noted that fig. 6 is a schematic plan view of the carrier grid, and fig. 7 is a schematic cross-sectional view of the carrier grid.

The bearing grating 1 is of a honeycomb structure, high in compressive strength and used for bearing upper load, thicker sound insulation filling materials are filled in the middle, and the sound insulation performance is higher. The filling material has the functions of heat insulation and preservation, reduces the energy consumption of indoor air conditioning and heating, and improves the comfort level of indoor environment.

In the scheme, the bearing grating 1 is a modified high-molecular HDPE structure. The modified high polymer HDPE (high density polyethylene) is environment-friendly, nontoxic, impact-resistant, ageing-resistant, ultraviolet-resistant, wear-resistant, corrosion-resistant, good in flame retardance and recyclable.

In this embodiment, the thickness of the grid wall 101 of the bearing grid is 2 mm. Floor loads are transmitted to the floor slab through the load-bearing grid, and since HDPE is an elastomeric material, the acoustic energy transmitted through a 2mm thick grid wall is small.

In the scheme, the tie bar 2 is a 2mm modified high-molecular HDPE structure.

In the present solution, the height of the carrier grid 1 is determined by the design requirements, and is generally 10mm to 50 mm.

It should be noted that, in the prior art, the thicker the sound insulation pad used for sound insulation of the floor slab, the more easily the sound insulation pad is pressed and deformed, and the decorative surface of the floor tile and the like of the room is cracked, so the steel bar mesh needs to be added, and the requirement of the manufacturing cost can only be made into a thin (2-5mm) sound insulation pad. The utility model discloses a design thickness is calculated according to the sound insulation needs or sound insulation and is confirmed, undertakes mechanical function by the grid, and the acoustic function is only undertaken to the sound-proof material, so the utility model discloses do not do the reinforcing bar net when the embodiment and also can do very thickly, generally 10mm-50 mm.

To facilitate the defecationIt is understood that this embodiment provides 3 cases for the application of the present invention, fig. 2 shows a perspective view of the present invention, fig. 3 shows embodiment 1, wherein the embodiment 1 adopts a floor tile 6 veneer, the weighting standardized impact sound pressure level L of this embodiment_nT，w52 dB. FIG. 4 shows example 2, which is a wood floor 10 facing example 2, wherein the weighted normalized impact sound pressure level L is_nT，w＝53dB。

FIG. 5 shows example 3, wherein example 3 shows a normalized impact sound pressure level L of the weighted impact of the example using a rough floor_nT，w56 dB. Wherein, the marks in the embodiment 1, the embodiment 2 and the embodiment 3 are explained as follows: 1 denotes a carrier grid; 2, a tie bar; 3 denotes a sound-insulating filling material, 4 denotes an original reinforced concrete floor, 5 denotes a 20mm thick 1: 3, dry and hard cement mortar; 5.1 denotes a 40mm thick 1: 3, dry and hard cement mortar or C20 fine stone concrete; 6, a floor tile; 7 represents a building sealant; 8 denotes a wall body; 9 represents a thick foam; and 10 denotes a wood flooring.

The construction of the embodiment is convenient, the floating slurry of the original reinforced concrete floor slab 4 is removed, and the floating slurry with the thickness of 20 is firstly manufactured to be 1: 30 dry and hard cement mortar 5 makes level, adopts the wet method of spreading, and the limit is made level the limit and is spread and paste the sound insulation board, the drawknot muscle up, after the screed-coat maintenance reached intensity, the face was spread 30 ~ 40 thick 1: 30 dry and hard cement mortar or C20 fine stone concrete 5.1. The veneer includes, but is not limited to, floor tiles 6 and wood flooring 10.

The weighted standardized impact sound pressure level index of the extruded sheet is extracted from 15ZJ502 of civil building sound insulation and absorption structure of the Central and south Standard Diagram.

The same or similar reference numerals correspond to the same or similar parts;

the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent;

it is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A floor vibration damping and sound insulation board is characterized by comprising: bear grid (1), drawknot muscle (2), sound insulation filler material (3), bear grid (1) and arrange according to honeycomb, bear grid (1) for not having the bottom structure, the cavity that encloses is used for filling sound insulation filler material (3) in the bars wall (101) of bearing grid (1), it is equipped with drawknot muscle (2) to bear grid (1) top.

2. A floor vibration damping and sound insulation board as claimed in claim 1, characterized in that the bearing grid (1) is of modified high molecular HDPE structure.

3. A floor vibration damping and sound insulating panel according to claim 1, characterized in that the thickness of the grid walls (101) of the load-bearing grid is 2 mm.

4. The floor vibration damping and sound insulation board as claimed in claim 1, wherein the tie bar (2) is a 2mm modified high polymer HDPE structure.

5. A floor vibration-damping and sound-insulating board as claimed in claim 1, wherein the sound-insulating and filling material is extruded polystyrene foam board or glass fiber board.

6. A floor vibration damping and sound insulation board according to any one of claims 1 to 4, characterized in that the bearing grating (1) is formed by splicing a plurality of unit gratings in a regular hexagonal cylinder shape.

7. A floor vibration damping and sound insulation board according to claim 6, wherein the height of the unit grid is 10mm-50 mm.