Interface noise prevention structure assembly and construction method of interface noise prevention

Abstract

The present invention relates to a structure for preventing inter-floor noise and a construction method for preventing inter-floor noise. By combining various materials and structures, a structure is provided that can effectively absorb and block inter-floor noise without a foamed concrete layer. In particular, by controlling noise in a multi-layered manner through a composite structure including a plurality of cushioning materials, sound insulation materials, sound-absorbing materials within filled grooves, and non-woven fabric sheets, vibration damping and sound absorption can be simultaneously secured. Furthermore, the invention provides a structure that can effectively absorb and block inter-floor noise without a foamed concrete layer by combining various materials and structures. In particular, by controlling noise in a multi-layered manner through a composite structure including a plurality of cushioning materials, sound insulation materials, sound-absorbing materials within filled grooves, and non-woven fabric sheets, vibration damping and sound absorption can be simultaneously secured, and construction can be simplified while maximizing the effect of reducing inter-floor noise.

Description

Technology Field

[0001] The present invention relates to a structure for preventing inter-floor noise and a construction method for preventing inter-floor noise. More specifically, the invention relates to a structure comprising a cushioning layer, a sound insulation layer, a sound-absorbing filler, a non-woven fabric sheet, a hard board, and a waterproof sheet, wherein a noise-absorbing filler is filled (inserted) into a filling groove of the sound insulation material, thereby enabling effective vibration damping and sound absorption functions without forming a separate foamed concrete layer, unlike conventional technology. Background Technology

[0002] Recently, due to rapid industrial development and economic growth, the demand for buildings has increased, and along with this, land prices have been continuously rising. As a result, in the case of buildings constructed in urban areas where land prices are high, there is a trend toward high-rise buildings as a means of efficiently using land.

[0003] In particular, as population concentration in large cities intensifies, there is a trend toward concentrating residential buildings on multi-story structures, such as apartments, villas, and multi-family houses, in order to solve housing problems in these cities.

[0004] Generally, for multi-unit dwellings such as apartments or villas where multiple generations live together, the foundation work is completed by constructing concrete slab layers according to the number of floors of the building; then, with heating pipes arranged at regular intervals on top of the concrete slab layers, gravel and cement mortar are applied to a predetermined thickness.

[0005] As described above, concrete slabs are used as elements to partition the upper and lower floors in multi-unit housing, and since these concrete slabs are constructed using only concrete, noise and vibrations caused by impact generated inside the corresponding floor of the building are transmitted directly to the floor below through the concrete slabs partitioning the floors.

[0006] Impact sounds applied to the structure of a multi-unit dwelling are transmitted in all directions as solid-borne sound is generated by operations such as walking, opening and closing of doors, movement of objects, or operation or stopping of equipment, and as a result, the surface of the multi-unit dwelling structure vibrates and is transmitted as airborne sound, which is heard by people in the surroundings and is perceived as noise.

[0007] For example, impacts such as falling objects or the sound of dragging a chair generate solid-borne sound, which is transmitted to the floor below through the concrete slab; this is commonly referred to as "inter-floor noise."

[0008] As multi-unit housing such as apartments has become more common, damage caused by inter-floor noise is increasing, and this has recently become a serious social problem. In response, regulations regarding housing construction standards are being further strengthened, and related laws are being revised.

[0009] Accordingly, efforts and research to reduce the aforementioned problem of inter-floor noise are being actively conducted, and various inter-floor noise prevention technologies are being proposed.

[0010] As an example of inter-floor noise prevention technology, a lightweight foamed concrete layer is formed above the concrete slab layer, a heating pipe and finishing mortar layer are formed on top of the lightweight foamed concrete layer, and a floor decoration layer composed of decorative materials such as vinyl flooring, solid wood, or tiles is formed on top of the finishing mortar layer. Here, while the lightweight foamed concrete layer formed above the concrete slab layer serves to cancel out noise, there is a problem in that it alone cannot fundamentally absorb or block noises such as lightweight impact sounds and heavyweight impact sounds.

[0011] Conventionally, sound-absorbing materials of a certain thickness are inserted into the indoor floor or arranged in layers to prevent noise from being transmitted to other layers, but there is a problem in that gaps are formed between the layers or a certain bonding surface is not formed, and thus the noise is amplified as gaps are formed between them.

[0012] Conventionally, as moisture continuously accumulates in the gaps between layers, mold can grow, causing indoor contamination and contaminating the bonding surfaces between the layers, which can lead to a decrease in sound absorption performance.

[0013] Heating pipes are buried in the indoor floors of multi-unit dwellings for heating purposes. In addition to the noise generated as heating water flows through the pipes, there is also a problem that the sound-absorbing layer may be damaged due to the temperature rise of the heating pipes during heating.

[0014] Most conventional floor construction methods for preventing inter-floor noise involve installing inter-floor noise prevention materials, such as sound insulation, on top of a concrete slab layer before installing a heating system. However, while this method is highly effective in preventing high-frequency lightweight impact noise, it has the disadvantage of not being suitable for suppressing inter-floor noise because it easily transmits low-frequency heavyweight impact noise to the floor slab layer. Prior art literature

[0015] Republic of Korea Published Patent No. 10-2022-0146738 (Publication Date: November 02, 2022) Republic of Korea Published Patent No. 10-2021-0156140 (Publication Date: December 24, 2021) The problem to be solved

[0016] The present invention was developed to improve upon the aforementioned problems. The objective of the present invention is to provide a structure capable of effectively absorbing and blocking inter-floor noise without a foamed concrete layer by combining various materials and structures. In particular, by controlling inter-floor noise in a multi-layered manner through a composite structure comprising a plurality of cushioning materials, sound insulation materials, noise-absorbing fillers within filled grooves, and non-woven fabric sheets, the invention provides an inter-floor noise prevention structure and an inter-floor noise prevention construction method that can simultaneously secure vibration damping and sound absorption, while being easy to construct and maximizing the effect of reducing inter-floor noise.

[0018] The technical problems of the present invention are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0019] To achieve the above objective, the inter-floor noise prevention structure according to the present invention is an inter-floor noise prevention structure disposed on the upper surface of a concrete slab layer that partitions the upper and lower floors of a building, comprising: a cushioning layer composed of a plurality of cushioning materials disposed on the upper surface of the concrete slab layer; a sound insulation layer composed of a plurality of sound insulation materials disposed on the upper surface of the cushioning layer, wherein a plurality of grooves (slots) are formed along the lower surface and a plurality of filling grooves are provided inside the grooves; a noise-absorbing filler material filled into the filling grooves; a non-woven fabric sheet bonded to the upper and lower surfaces of the sound insulation layer to prevent the noise-absorbing filler material filled in the filling grooves from escaping; a hard board disposed between the cushioning material and the sound insulation material to support the sound insulation material; a waterproof sheet disposed on the upper surface of the sound insulation layer to provide a waterproofing function; and a finishing layer disposed on the upper surface of the sound insulation layer for finishing. The technical feature is that it provides vibration damping and sound absorption functions without separately forming a foamed concrete layer by means of a structure in which the noise-absorbing filler is filled into the filling groove.

[0021] The cushioning material of the above cushioning layer may be formed from one or more materials selected from rubber, polyurethane, or high-elasticity polyethylene.

[0023] The cushioning material of the above cushioning layer may be composed of recycled sponge.

[0025] The above buffer layer is configured to have irregularities formed at regular intervals to disperse the mechanical resonance frequency of the sound insulation layer.

[0027] The sound insulation material of the above sound insulation layer can be formed from EVA (ethylene vinyl acetate) or PE (polyethylene) foam.

[0029] The above nonwoven sheet may be a high-density nonwoven material with improved sound absorption performance.

[0031] The above noise-absorbing filler may include any one of an inorganic filler, an organic filler, a polyester fiber, a natural material filler, or a composite filler.

[0033] The above inorganic filler may include any one of glass wool, rock wool, perlite, and vermiculite; the above organic filler may include any one of urethane foam, melamine foam, and polyester fiber; the above natural material filler may include any one of wool, fiber from hemp / flax, and wood fiber; and the above composite filler may include any one of polyurethane foam + glass wool and melamine foam + aluminum foil.

[0035] The above groove (slot) can be formed in a grid shape along the lower surface of the sound insulation layer.

[0037] The above-mentioned filling groove can be formed at the intersection of the grid-shaped grooves.

[0039] The hard board is integrally bonded to the lower surface of the sound insulation material, and the sound insulation material is composed of unit modules having a certain area, so that adjacent unit modules can be assembled together during construction.

[0041] It is preferable that the above unit module be structured such that grooves and protrusions are alternately provided to each other, and the grooves and protrusions are connected in an interlocking manner.

[0043] The above-described noise-absorbing filler forms a porous structure composed of a plurality of fine fibers, and when sound waves pass through the interior of the noise-absorbing filler, energy is converted into heat due to frictional resistance and viscous resistance, and is configured to absorb high-frequency airborne sound during this process.

[0045] The above hard board is a heat-blocking material and may include at least one of XPS (Isopink), EPS, I2board, or E-board.

[0047] The finishing material of the floor finishing layer above consists of linoleum or floorboards, and a functional surface coating having antibacterial, anti-slip, and anti-static functions may be applied.

[0049] The finishing material of the above finishing layer may be composed of any one of wood-based flooring, PVC tile, or composite flooring.

[0051] Meanwhile, the inter-floor noise prevention construction method according to the present invention is a method of constructing an inter-floor noise prevention structure on the upper surface of a concrete slab layer that partitions the upper and lower floors of a building, and comprises the following technical features: providing a sound insulation material having a plurality of grooves (slots) formed along the lower surface and a plurality of filling grooves inside the grooves, filling a noise-absorbing filling material into the filling grooves, bonding a non-woven fabric sheet to the upper and lower surfaces of the sound insulation material to prevent the noise-absorbing filling material filled in the filling grooves from escaping, and manufacturing a unit module having a certain area (size) in which a hard board is bonded to the lower surface of the sound insulation layer; forming a cushioning layer on the upper surface of the concrete slab layer; assembling and connecting a plurality of the unit modules on the upper surface of the cushioning layer to form a sound insulation layer; installing a waterproof sheet that provides a waterproofing function on the upper surface of the sound insulation layer; and forming a finishing layer on the upper surface of the sound insulation layer to perform finishing treatment.

[0052] By means of a structure in which the noise-absorbing filler is filled into the aforementioned filling groove, vibration damping and sound absorption functions are provided without separately forming a foamed concrete layer. Effects of the invention

[0053] As explained above, the present invention has the following effects.

[0054] First, by including a cushioning layer composed of a plurality of cushioning materials disposed on the upper surface of a concrete slab layer, a sound insulation layer composed of a plurality of sound insulation materials having a plurality of grooves and filling grooves on top thereof, a noise-absorbing filler inserted into the filling grooves of the sound insulation layer, non-woven fabric sheets bonded to the upper and lower surfaces of the sound insulation materials respectively, a hard board interposed between the cushioning layer and the sound insulation layer to support the sound insulation material, a waterproofing sheet disposed on top of the sound insulation layer to provide a waterproofing function, and a finishing layer at the top, it is possible to provide an effective inter-floor noise prevention function without separately forming a foamed concrete layer, unlike conventional technology, and to properly absorb or block noise such as light impact sound and heavy impact sound at the source.

[0055] Second, by forming multiple filling grooves within the grooves formed on the lower surface of the sound insulation material and filling the filling grooves with a noise-absorbing filler, sound absorption performance can be maximized along with structural stability. The noise-absorbing filler improves the performance of blocking resonance and impact noise, and non-woven fabric sheets attached to the upper and lower surfaces of the sound insulation material, respectively, to prevent the noise-absorbing filler from detaching from the filling grooves, ensure the long-term fixation of the filler and effectively suppress friction noise between materials.

[0056] Third, the hard board inserted between the cushioning layer and the sound insulation layer evenly distributes the load of the upper sound insulation layer to ensure structural stability, while the waterproof sheet effectively blocks moisture penetration from the top to provide waterproofing functionality. Additionally, the finishing layer provides a surface finish suitable for general residential environments and contributes to improving the quality of the exterior appearance.

[0058] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description in the claims. Brief explanation of the drawing

[0059] FIG. 1 is a drawing showing a cross-sectional view of the construction of an inter-floor noise prevention structure according to the present invention. FIG. 2 is an enlarged view of section A of FIG. 1. FIG. 3 is a combined perspective view of an inter-floor noise prevention structure according to the present invention. FIG. 4 is an exploded perspective view of an inter-floor noise prevention structure according to the present invention. FIG. 5 is a bottom view of a sound insulation material according to the present invention. FIG. 6 is a longitudinal section along line AA of FIG. 3 FIG. 7 is a longitudinal section along line BB of FIG. 3 FIG. 8 is a perspective view illustrating the recycled sponge of the present invention. FIG. 9 is a block diagram illustrating a construction method for preventing inter-floor noise according to the present invention. FIG. 10 is a test report of the inter-floor noise prevention structure of the present invention. Specific details for implementing the invention

[0060] Hereinafter, an inter-floor noise prevention structure and an inter-floor noise prevention construction method according to a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0061] FIG. 1 is a drawing showing a cross-sectional view of a floor noise prevention structure according to the present invention, FIG. 2 is an enlarged view of part A of FIG. 1, FIG. 3 is a combined perspective view of a floor noise prevention structure according to the present invention, FIG. 4 is an exploded perspective view of a floor noise prevention structure according to the present invention, FIG. 5 is a bottom view of a sound insulation material according to the present invention, FIG. 6 is a longitudinal cross-sectional view along line AA of FIG. 3, FIG. 7 is a longitudinal cross-sectional view along line BB of FIG. 3, FIG. 8 is a perspective view showing a recycled sponge of the present invention, and FIG. 9 is a block diagram showing a floor noise prevention construction method according to the present invention.

[0062] First, referring to FIGS. 1 to 8, the inter-floor noise prevention structure (100) according to a preferred embodiment of the present invention is an inter-floor noise prevention structure placed on top of a concrete slab layer (10) that separates the upper and lower floors of a building.

[0063] A floor noise prevention structure (100) according to a preferred embodiment of the present invention comprises: a cushioning layer (110L) composed of a plurality of cushioning materials (110) disposed on the upper surface of a concrete slab layer (10); a sound insulation layer (120L) composed of a plurality of sound insulation materials (120) disposed on the upper surface of the cushioning layer (110), wherein a plurality of grooves (slots) (121a) are formed along the lower surface and a plurality of filling grooves (121b) are provided inside the grooves (121a); ​​a noise-absorbing filling material (122) filled into the filling grooves (1211b); and a non-woven fabric sheet (123) bonded to the upper and lower surfaces of the sound insulation material (120) to prevent the noise-absorbing filling material (122) filled into the filling grooves (121b) from escaping. A hard board (124) that supports the sound insulation material (120) by being placed between the cushioning material (110) and the sound insulation material (120); a waterproof sheet (130) that provides a waterproof function by being placed on top of the sound insulation material (120); and a finishing material layer (140L) that is placed on top of the sound insulation material layer (120L) for finishing; wherein, by a structure in which the noise-absorbing filling material (122) is filled into the filling groove (121b), it provides dustproof and sound-absorbing functions without separately forming a foamed concrete layer.

[0065] The above buffer layer (110L) is composed of a plurality of buffer materials (110) disposed on the upper surface of the concrete slab layer (10).

[0066] The cushioning material (110) can be formed from one or more materials including rubber, polyurethane, or high-elasticity polyethylene.

[0068] As shown in FIG. 8, the cushioning material (110) of the cushioning layer (110L) may also be composed of recycled sponge.

[0069] Although not shown in the drawing, the cushioning material (110) of the cushioning layer (110L) may be configured to have irregularities formed at regular intervals to disperse the mechanical resonance frequency of the sound insulation layer (120L).

[0071] The above sound insulation layer (120L) is disposed on the upper part of the cushioning layer (110) and is composed of a plurality of sound insulation materials (120) having a plurality of grooves (slots) (121a) formed along the lower surface and a plurality of filling grooves (121b) inside the grooves (121a).

[0072] It is preferable that the hard board (124) is integrally bonded to the lower surface of the sound insulation material (120), and that the sound insulation material (120) is composed of unit modules (UM) having a certain area and a square shape, so that adjacent unit modules (UM) are assembled together during construction.

[0073] Although not illustrated in the drawing, the unit module (UM) may be configured with a structure in which grooves and protrusions are alternately provided to each other, and the grooves and protrusions are connected in an interlocking manner.

[0074] The sound insulation material (120) can be formed from EVA (ethylene vinyl acetate) or PE (polyethylene) foam.

[0075] A plurality of grooves (slots) (121a) are formed along the lower surface of the soundproofing material (120), and a plurality of filling grooves (121b) are provided inside the grooves (121a).

[0076] The above groove (slot) (121a) can be formed in a grid shape along the lower surface of the sound insulation material (120) (see FIG. 5). The above filling groove (121b) can be formed at the intersection of the grid-shaped groove (121a), and the above filling groove (121b) can be formed in a conical shape.

[0077] The above noise-absorbing filler (122) is formed as a porous structure composed of a plurality of fine fibers, and when sound waves pass through the interior of the noise-absorbing filler (122), energy is converted into heat by frictional resistance and viscous resistance, and in this process, airborne sound in the high-frequency band is absorbed.

[0078] The above noise-absorbing filler (122) may be composed of any one of an inorganic filler, an organic filler, a polyester fiber, a natural material filler, or a composite material filler.

[0079] The above inorganic filler may include any one of glass wool, rock wool, perlite, and vermiculite, the above organic filler may include any one of urethane foam, melamine foam, and polyester fiber, the above natural material filler may include any one of wool, fiber from hemp / flax, and wood fiber, and the above composite filler may be composed of polyurethane foam + glass wool and melamine foam + aluminum foil.

[0080] The above nonwoven sheet (123) is preferably made of a high-density nonwoven material with improved sound absorption performance.

[0081] The hard board (124) above is a heat-blocking material and may be composed of at least one of XPS (Isopink), EPS, I2board, or E-board.

[0083] And the floor finishing material (140) of the floor finishing layer (140L) above is made of floorboards or floorboards, and a functional surface coating having antibacterial, anti-slip, and anti-static functions may be applied.

[0084] The finishing material (140) of the above finishing material layer (140L) may be composed of any one of wood-based flooring, PVC tile, or composite flooring.

[0086] Meanwhile, FIG. 9 is a block diagram illustrating a construction method for preventing inter-floor noise according to the present invention.

[0087] The inter-floor noise prevention construction method according to the present invention is a method of constructing an inter-floor noise prevention structure (100) on top of a concrete slab layer (10) that separates the upper and lower floors of a building.

[0088] Referring further to FIG. 9, the inter-floor noise prevention construction method according to the present invention comprises the steps of: manufacturing a unit module (UM) (S10); forming a cushioning layer (110) on the upper surface of the concrete slab layer (10) (S20); assembling and connecting a plurality of the unit modules (UM) on the upper surface of the cushioning layer (110) to form a sound insulation layer (120L) (S30); installing a waterproof sheet (130) that provides a waterproofing function on the upper surface of the sound insulation layer (120L) (S40); and forming a finishing layer (140L) on the upper surface of the sound insulation layer (120L) to perform a finishing treatment (S50).

[0089] In the step (S10) of manufacturing a unit module (UM), a sound insulation material (120) is provided having a plurality of grooves (slots) (121a) formed along the bottom surface and a plurality of filling grooves (121b) inside the grooves (121a), a noise-absorbing filling material (122) is filled into the filling grooves (121b), and a non-woven fabric sheet (123) is bonded to the upper and lower surfaces of the sound insulation material (120) to prevent the noise-absorbing filling material (122) filled into the filling grooves (121b) from escaping, and a unit module (UM) having a certain area (square shape) is manufactured by bonding a hard board (124) to the bottom surface of the sound insulation material (120).

[0090] Next, a cushioning layer (110) is formed on the upper surface of the concrete slab layer (10) (S20).

[0091] Next, a plurality of the unit modules (UM) are assembled and connected on the upper part of the buffer layer (110) to form a sound insulation layer (120L) (S30).

[0092] Next, a waterproof sheet (130) that provides a waterproof function is installed on the upper part of the sound insulation layer (120L) (S40).

[0093] Then, a finishing layer (140L) is formed on top of the sound insulation layer (120L) to finish the process (S50).

[0094] In the inter-floor noise prevention construction method according to the present invention, by means of a structure in which the noise-absorbing filler (122) is filled into the filling groove (121b), unlike the prior art, vibration damping and sound absorption functions can be provided without separately forming a foamed concrete layer.

[0096] Meanwhile, FIG. 10 is a test report of the inter-floor noise prevention structure of the present invention.

[0097] Referring to Fig. 10, the inter-floor noise blocking plate F1 will be described.

[0098] Test Method: KS F ISO 16283-2:2015 (Architectural Acoustics_Measurement of Sound Insulation Performance Indoors)

[0099] KS F ISO 717-2:2020 (Classification of sound insulation performance for airborne sound)

[0100] Testing agency: Korea Construction & Living Environment Testing Institute (KCL)

[0101] Test specimen: Sound-absorbing noise blocking plate F4 (present invention)

[0102] Test Item: Sound insulation (airborne sound blocking ability) (Rw) by item

[0103] Test environment: Temperature (11 ± 1 ℃), Humidity (43 ± 3 % RH)

[0105] Average sound insulation performance: 32 dB (based on KS F ISO 16283-2)

[0106] Thickness: 90 mm

[0107] Unit of measurement: Decibel (dB)

[0108] Test Result: Rw 32 dB

[0110] When an impact noise source is generated on the inter-floor noise blocking plate, measuring the blocking performance of the inter-floor noise prevention blocking structure of the present invention shows that it passes KCL certification and KS standard tests, and secures sound insulation performance of Rw 47dB or higher, thus having the best blocking performance, effective impact noise reduction performance can be expected even under actual usage conditions.

[0111] The inter-floor noise prevention barrier structure of the present invention is optimal for construction near construction sites, apartments, and schools, and can maintain its performance even under climatic conditions.

[0113] As explained above, the present invention has the following effects.

[0114] First, by including a cushioning layer composed of a plurality of cushioning materials disposed on the upper surface of a concrete slab layer, a sound insulation layer composed of a plurality of sound insulation materials with a plurality of grooves and filling grooves provided on the upper surface, a noise-absorbing filling material inserted into the filling grooves of the sound insulation layer, non-woven fabric sheets bonded to the upper and lower surfaces of the sound insulation materials respectively, a hard board interposed between the cushioning layer and the sound insulation layer to support the sound insulation material, a waterproofing sheet disposed on the upper surface of the sound insulation layer to provide a waterproofing function, and a finishing layer at the top, it is possible to provide an effective inter-floor noise prevention function without separately forming a foamed concrete layer, unlike conventional technology, and to properly absorb or block noise such as light impact sound and heavy impact sound at the source.

[0115] Second, by forming multiple filling grooves within the grooves formed on the lower surface of the sound insulation material and filling the filling grooves with a noise-absorbing filler, sound absorption performance can be maximized along with structural stability. The noise-absorbing filler improves the performance of blocking resonance and impact noise, and non-woven fabric sheets attached to the upper and lower surfaces of the sound insulation material, respectively, to prevent the noise-absorbing filler from detaching from the filling grooves, ensure the long-term fixation of the filler and effectively suppress friction noise between materials.

[0116] Third, the hard board inserted between the cushioning layer and the sound insulation layer evenly distributes the load of the upper sound insulation layer to ensure structural stability, while the waterproof sheet effectively blocks moisture penetration from the top to provide waterproofing functionality. Additionally, the finishing layer provides a surface finish suitable for general residential environments and contributes to improving the quality of the exterior appearance.

[0118] Meanwhile, the present specification and drawings disclose preferred embodiments of the present invention. Although specific terms have been used, they are used merely in a general sense to facilitate the explanation of the technical content of the invention and to aid in understanding the invention, and are not intended to limit the scope of the invention.

[0119] It is obvious to those skilled in the art that, in addition to the embodiments disclosed herein, other variations based on the technical concept of the present invention are possible. Explanation of the symbols

[0120] 10: Concrete slab layer 100: Inter-floor noise prevention structure 110: Cushioning material 110L: Cushioning layer 120: Soundproofing material 120L: Sound insulation layer 121a: Home (Slot) 121b: Filling groove 122: Noise-absorbing filler 123: Non-woven fabric sheet 124: Hardboard 130: Waterproof sheet 140: Finishing materials 140L: Finishing layer

Claims

Claim 1 A floor noise prevention structure (100) disposed on the upper surface of a concrete slab layer (10) that separates the upper and lower floors of a building, comprising: a cushioning layer (110L) composed of a plurality of cushioning materials (110) disposed on the upper surface of the concrete slab layer (10); a sound insulation layer (120L) composed of a plurality of sound insulation materials (120) disposed on the upper surface of the cushioning layer (110L), wherein a plurality of grooves (slots) (121a) are formed along the lower surface and a plurality of filling grooves (121b) are provided inside the grooves (121a); ​​a noise-absorbing filling material (122) filled into the filling grooves (121b); a non-woven fabric sheet (123) bonded to the upper and lower surfaces of the sound insulation material (120) to prevent the noise-absorbing filling material (122) filled into the filling grooves (121b) from escaping; and the cushioning material (110) and the A structure for preventing interlayer noise, comprising: a hard board (124) placed between sound insulation materials (120) to support the sound insulation materials (120); a waterproof sheet (130) placed on top of the sound insulation materials (120) to provide a waterproofing function; and a finishing layer (140L) placed on top of the sound insulation layer (120L) for finishing, wherein the sound-absorbing filling material (122) is filled into the filling groove (121b), thereby providing vibration damping and sound absorption functions without separately forming a foamed concrete layer. Claim 2 A structure for preventing interlayer noise, characterized in that, in claim 1, the cushioning material (110) of the cushioning layer (110L) is formed of one or more materials including rubber, polyurethane, or high-elasticity polyethylene. Claim 3 A structure for preventing interlayer noise, characterized in that, in claim 1, the cushioning material (110) of the cushioning layer (110L) is composed of recycled sponge. Claim 4 A floor noise prevention structure according to claim 1, wherein the cushioning material (110) of the cushioning material layer (110L) has irregularities formed at regular intervals to disperse the mechanical resonance frequency of the sound insulation material layer (120L). Claim 5 A structure for preventing interlayer noise, characterized in that, in claim 1, the sound insulation material (120) of the sound insulation layer (120L) is formed of EVA (ethylene vinyl acetate) or PE (polyethylene) foam. Claim 6 In claim 1, the interlayer noise prevention structure is characterized in that the nonwoven sheet (123) is a high-density nonwoven material with improved sound absorption performance. Claim 7 A floor noise prevention structure according to claim 1, characterized in that the noise-absorbing filler (122) comprises any one of an inorganic filler, an organic filler, a polyester fiber, a natural material filler, or a composite material filler. Claim 8 The interlayer noise prevention structure according to claim 7, wherein the inorganic filler comprises any one of glass wool, rock wool, perlite, and vermiculite; the organic filler comprises any one of urethane foam, melamine foam, and polyester fiber; the natural material filler comprises any one of wool, fiber from hemp / flax, and wood fiber; and the composite filler comprises any one of polyurethane foam + glass wool and melamine foam + aluminum foil. Claim 9 A floor noise prevention structure according to claim 1, characterized in that the groove (slot) (121a) is formed in a grid shape along the lower surface of the sound insulation material (120). Claim 10 In claim 9, the interlayer noise prevention structure is characterized in that the filling groove (121b) is formed at the intersection of the grid-shaped groove (121a). Claim 11 A floor noise prevention structure according to claim 1, characterized in that the hard board (124) is integrally bonded to the lower surface of the sound insulation material (120) of the sound insulation layer (120L), and the sound insulation material (120) is composed of unit modules (UM) having a certain area, so that adjacent unit modules (UM) are assembled together during construction. Claim 12 In claim 11, the inter-floor noise prevention structure is characterized in that the unit module (UM) is provided with grooves and protrusions intersectingly with each other and has a structure in which the grooves and protrusions are connected in an interlocking manner. Claim 13 In claim 1, the sound-absorbing filler (122) forms a porous structure composed of a plurality of fine fibers, and when sound waves pass through the interior of the sound-absorbing filler (122), energy is converted into heat by frictional resistance and viscous resistance, and in this process, airborne sound in the high-frequency band is absorbed, characterized in that the interlayer noise prevention structure. Claim 14 In claim 1, the hard board (124) is a heat-blocking material and is a floor noise prevention structure comprising at least one of XPS (Isopink), EPS, I2board, or E-board. Claim 15 In claim 1, the floor finishing material (140) of the finishing material layer (140L) is made of linoleum or floorboard, and the interlayer noise prevention structure is applied with a functional surface coating having antibacterial, anti-slip, and anti-static functions. Claim 16 A floor noise prevention structure according to claim 1, characterized in that the finishing material (140) of the finishing material layer (140L) is composed of any one of wood-based flooring material, PVC tile, or composite flooring material. Claim 17 A method for constructing a floor noise prevention structure (100) on top of a concrete slab layer (10) that separates the upper and lower floors of a building, comprising the step (S10) of manufacturing a unit module (UM) having a certain area (size) in which a plurality of grooves (slots) (121a) are formed along the lower surface and a plurality of filling grooves (121b) are provided, wherein a noise-absorbing filling material (122) is filled into the filling grooves (121b), and a non-woven fabric sheet (123) is bonded to the upper and lower surfaces of the sound insulation material (120) to prevent the noise-absorbing filling material (122) filled into the filling grooves (121b) from escaping, and a hard board (124) is bonded to the lower surface of the sound insulation material (120); and a cushioning layer (110) is formed on the upper surface of the concrete slab layer (10). A method for preventing inter-floor noise, comprising: a step of forming (S20); a step of assembling and connecting a plurality of unit modules (UM) on top of the buffer layer (110) to form a sound insulation layer (120L) (S30); a step of installing a waterproof sheet (130) that provides a waterproofing function on top of the sound insulation layer (120L) (S40); and a step of forming a finishing layer (140L) on top of the sound insulation layer (120L) to provide a finishing treatment (S50). Claim 18 A construction method for preventing interlayer noise, characterized by providing vibration damping and sound absorption functions without separately forming a foamed concrete layer, by means of a structure in which the noise-absorbing filler (122) is filled into the filling groove (121b) of claim 17.

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