KR102082255B1 - The Floor Structure for reducing sound transmission between floors - Google Patents

Abstract

The present invention is a floor structure in which the foamed concrete layer, the mortar layer and the bottom finishing layer is sequentially stacked on the floor slab top and bottom muscles are arranged, the upper and lower muscles are arranged in a constant shape continuously It is configured in a connected form, when viewed from above the upper and lower muscles are characterized in that they are arranged to look staggered with each other.
In another aspect, the present invention in the floor structure in which the bubble concrete layer, mortar layer and the floor finishing layer is sequentially stacked on the floor slab with the upper and lower muscles are arranged, closed wire mesh of the form that is continuously connected to a predetermined shape inside the floor structure or It is characterized in that the expanded metal of the mesh type is inserted.

Description

The floor structure for reducing sound transmission between floors}

The present invention relates to a floor structure for attenuating floor noise generated in a multi-unit house, and more particularly, the upper and lower roots of a floor slab are connected to each other in a shape in which a constant section is continuously connected. Stacked closed wire mesh or meshed expanded metal in multiple layers with staggered reinforcement or continuous cross-section, installed inside the floor structure to disperse waves of noise or impact sound transmitted from the top Or it relates to a floor structure to attenuate the interlayer noise transmitted to the lower layer by absorption.

Recently, multi-family housing such as apartments, townhouses and villas has been steadily spread, and the number of multi-family housing in Korea is known to occupy more than 50% of the total households.

Such multi-family housing has a disadvantage in that many households are adjacent to each other with walls or floors interposed therebetween, so that noise or vibrations are immediately transmitted to the neighbors. According to the survey of residential environment and inconveniences of apartment houses, the first level of dissatisfaction of the residential environment is inter-floor noise, which is causing social problems in recent years.

In the conventional multi-unit house, as shown in FIG. 1, the sound insulation plate 110 or the sound insulation sheet is formed on the reinforced concrete slab layer 100, the foam concrete layer 120 is formed thereon, and the heating pipe for hot water circulation thereon. 130 was placed, and the cement mortar 140 was filled thereon, and then the surface was plastered, and finished with surface finish 150 such as cardboard or wood floor.

In the above method, since the reinforced concrete slab layer that separates the upper and lower layers has a specific gravity and airtightness, it is possible to block a certain amount of air transmission sound transmitted to the medium, such as a human voice, TV, or radio sound. However, unlike the air transmission sound, the solid transmission sound generated when an impact is applied to the slab layer transmits sound and vibration well, and in some cases, amplifies the sound or vibration. Although not shown in FIG. 1, in the conventional slab layer, the upper and lower muscles are arranged in a lattice shape, but a wave of noise generated between the upper and lower layers is passed through the lattice gap as it is, causing noise.

Recently, various sound insulation products have been developed to attenuate the noise and vibration generated between floors. In the floor structure, a sound insulation board (sound insulation sheet) is installed on the reinforced concrete slab layer to form a space layer in the middle of the floor. It is configured to prevent noise.

However, it is not effective in the product efficiency such as styrofoam or EVA resin constituting the sound insulation plate, but the effect on the light impact sound, but has shown a limit to the heavy impact sound. In addition, a sound insulation plate such as styrofoam has a problem that the sound insulation performance is reduced by reducing the volume due to pressing during long-term existence, thereby forming voids. In addition, in the living room, the room, etc., the floated floor itself vibrates greatly, generating a negative effect that sounds like a drum.

In order to eliminate such vibration, the thickness of the slab may be increased, but since the thickness of the slab increases, the construction cost increases and structural reinforcement due to the increase of the weight of the structure is inevitably disadvantageous in many aspects and difficult to apply in reality.

The present invention developed to solve the above problems is to attenuate the interlayer noise without increasing the thickness of the slab by increasing the upper and lower muscles in the form of a continuous connection of a constant cross section inside the floor slab for the purpose of effectively reducing the interlayer noise do.

In another aspect, the present invention is another object to disperse and attenuate the floor shock wave by inserting a closed wire mesh or a mesh of expanded metal in the form of a continuous connection of a constant cross section into the floor structure laminated in multiple layers.

Technical configuration of the present invention developed to achieve the above object is as follows.

The present invention is a floor structure in which the foamed concrete layer, the mortar layer and the floor finishing layer is sequentially stacked on the floor slab top and bottom muscles, the upper and lower muscles are arranged in a constant shape continuously It is configured in a connected form, and when viewed from above the upper and lower muscles are characterized in that they are arranged to look staggered with each other.

In another aspect, the present invention in the floor structure in which the foamed concrete layer, mortar layer and the floor finishing layer is sequentially stacked on the floor slab with the upper and lower muscles are arranged, closed wire mesh of the form that is continuously connected to a predetermined shape inside the floor structure or The expanded metal in the form of a net is characterized in that the installation is inserted.

Technical effects according to the configuration of the present invention are as follows.

First, the interlayer noise can be effectively attenuated without increasing the thickness of the slab.

Because, without providing a separate laminated structure, the conventional floor slab thickness is maintained as it is, and the shape of the upper and lower muscles is formed in a form in which a constant cross-section is continuously connected, and when viewed from above, the noise transmitted from the upper side This is because the probability of the wave passing through the gap between the upper and lower muscles decreases, so most of them are dispersed or absorbed.

Second, the closed wire mesh or fine eye expanded metal is installed inside the mortar layer to effectively attenuate and absorb the floor impact sound.

In other words, the closed wire mesh or expanded metal installed inside the mortar layer maximizes the attenuation effect of the floor impact sound by moving and dispersing and attenuating the floor shock waves transmitted from the floor finishing layer in the horizontal direction using dynamic elasticity such as metal. can do.

Third, maximize the impact sound reduction effect by placing a separate shock absorbing layer between the floor slab and the foam concrete layer, and simply lay a heating pipe and fix the heating pipe by placing a closed wire mesh or expanded metal on the shock absorbing layer to form a bubble concrete layer. Easy to install and shorten the air.

1 is a cross-sectional view of a conventional floor structure in a conventional building.
Figure 2a and 2b is an exploded perspective view showing a first embodiment of the floor structure for attenuating the interlayer noise in accordance with the present invention.
3 (a) to 3 (c) show various forms of the upper and lower muscles in the first embodiment according to FIGS. 2A and 2B of the present invention.
Figure 4 is an exploded perspective view showing a second embodiment of the floor structure for attenuating the interlayer noise in accordance with the present invention.
5 and 6 are cross-sectional views showing embodiments to which the second embodiment of the present invention is variously applied.
7 and 8 are cross-sectional views showing a third embodiment of a floor structure for attenuating inter-noise noise in accordance with the present invention.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

<First Example >

Figure 2a and 2b is an exploded perspective view showing a first embodiment of the floor structure (FS) for attenuating the inter-layer noise in accordance with the present invention, Figure 3 (a) to (c) is a first embodiment according to the present invention It shows the various forms of the upper and lower muscles 12 and 14.

According to the first embodiment of the present invention, the foamed concrete layer 20, the mortar layer 30, and the bottom finishing layer 40 are disposed on the bottom slab 10 having the upper and lower roots 12 and 14 disposed therein. In the bottom structure (FS) to be sequentially stacked, the upper and lower muscles 12 and 14 arranged in the bottom slab 10 is formed in a continuous connection form a constant cross-section, when viewed from the top root ( 12) and the lower muscles 14 are characterized in that they are arranged to look staggered with each other.

The first embodiment of the present invention is characterized in that the upper muscles 12 and the lower muscles 14 arranged in the bottom slab 10 are configured in a shape in which a constant cross-section is continuously connected, and they are alternately arranged. In this case, the upper root 12 and the lower root 14 may be formed in various forms such as a honeycomb cross section, a circular cross section, and a polygonal cross section as shown in FIGS. 3 (a) to 3 (c).

Since the upper root 12 and the lower root 14 are installed up and down alternately, the wave due to the vibration or impact sound transmitted from the upper portion is dispersed or absorbed, thereby reducing the noise transmission.

In other words, the wave caused by the vibration or shock transmitted from the upper part is first dispersed or absorbed while meeting the upper root 12 of the bottom slab 10, and some waves are passed through the empty space formed between the upper root 12, Passed wave meets the lower root 14 and is dispersed or absorbed secondarily. At this time, in the first embodiment of the present invention, the upper root 12 and the lower root 14 are alternately arranged so that a path through which a noise wave due to vibration or shock is passed is almost blocked. For example, when the upper root 12 and the lower root 14 are installed in parallel with the grid as in the prior art, since the empty space on the plane is formed wider, the probability of passing the noise-inducing wave to the lower layer is increased. As in the first embodiment, when the upper and lower muscles 12 and the lower muscles 14 are alternately arranged in a shape in which a constant cross-section is continuously connected, most of the noise waves are formed by narrowing the empty space on the plane, so that most of the noise waves are generated in the upper and lower muscles 12 and 14. ), The wave absorbed or dispersed in contact with the wave, and partially collapsed, increases the probability of being absorbed in the floor slab 10.

The figure below shows the bang machine and the impact ball used as the impact source of the standard squeeze sound of the apartment house. The results of experiments on the structure (FS) were measured with the above mentioned bang machine and impact ball.

[Figure 1] (Bang Machine)

[Figure 2] (Impact Ball)

When the upper and lower muscles are placed in a parallel grid When the upper and lower roots are staggered in a shape where a certain section is connected continuously
Base value (DB)

Batting circle

Bang Machine
4th grade (48DB)
Class 3 (45DB) <Level 4>
47≤ DB ≤50
<Class 3>
43≤ DB ≤47
Impact Ball
4th class (46DB)
Level 3 (43DB) <Level 4>
44≤ DB ≤47
<Class 3>
40≤ DB ≤44

Batting circle Improvement effect (%) Bang Machine {(48-45) / 45} * 100 = 6.7% Impact Ball {(46-43) / 43} * 100 = 7.0%

As shown in Tables 1 and 2 above, the floor structure FS according to the first embodiment of the present invention has upper and lower roots 12 and 14 so that the upper and lower roots 12 and 14 are alternately arranged in a shape in which a constant cross section is continuously connected. It is about 6.7 to 7.0% better in terms of noise blocking ability than the conventional floor structure FS in which the vicinity 12 and 14 are arranged in parallel to the grid.

In summary, the first embodiment of the present invention is similar to the principle of the silencer of an automobile. When the upper and lower roots 12 and 14 are made into a closed cross section, the floor shock wave hits the upper and lower roots 12 and 14 and proceeds. The floor shock wave, which is broken and the path is broken, disappears in the concrete medium, and the floor shock wave passing through the medium is greatly attenuated, thereby reducing the amount of noise transmitted to the lower layer.

<Second Example >

Figure 4 is an exploded perspective view showing a second embodiment of the floor structure (FS) for attenuating the inter-layer noise in accordance with the present invention, Figure 5 and Figure 6 shows an embodiment of various applications of the second embodiment of the present invention It is a cross section.

According to the second embodiment of the present invention, the foamed concrete layer 20, the mortar layer 30, and the bottom finishing layer 40 are disposed on the bottom slab 10 having the upper and lower roots 12 and 14 disposed therein. In the floor structure (FS) to be sequentially stacked, the closed wire mesh 50 or the expanded metal 60 of the net shape of the form is continuously inserted into the floor structure (FS) connected continuously characterized in that the installation do.

The second embodiment of the present invention is suitable for the floor structure (FS) in which the heating pipe 80 is installed for the ondol system, and the closed wire mesh 50 or expanded inside the floor structure FS composed of several layers. It is characterized in that the metal 60 is inserted.

At this time, the closed wire mesh 50 is made of a wire entangled like a net, and the shape of the mesh (holes perforated in the net) has a honeycomb-shaped cross section, a circular cross section like the upper and lower roots 12 and 14 mentioned in the first embodiment. It may be made of various shapes such as polygonal cross section.

4 shows that the closed mesh 50 or expanded metal 60 is installed above the upper root 12 in the bottom slab 10. This is a structure that attenuates interlayer noise by installing the closed wire mesh 50 or expanded metal 60 thereon after the upper and lower roots 12 and 14 are disposed in a conventional manner. That is, the waves due to the impact and noise transmitted to the bottom finishing layer 40 are transmitted to the bottom slab 10, which is absorbed or dispersed by a collision with the closed wire mesh 50 or expanded metal 60. do. In addition, even though the waves due to impact and noise pass through the closed wire mesh 50 or the expanded metal 60, they are secondarily hit by the upper and lower muscles 12 and 14, which are disposed below, to be absorbed or dispersed. Therefore, the noise between layers can be greatly attenuated. In this case, the closed wire mesh 50 or the expanded metal 60 increases the rigidity of the floor slab 10 more effectively because it is connected to the floor slab 10 integrally, and thus plate vibration of the floor slab 10 is caused. This suppression reduces the weight impact sound caused by the floor slab 10. That is, since the effective weight at the impact point is increased by increasing the rigidity of the bottom slab 10, it is possible to obtain an effect of reducing the transmission of the weight shock sound.

Meanwhile, as shown in FIG. 5, in the present invention, the upper root 12 of the bottom slab 10 is disposed by only a predetermined length from both ends of the bottom slab 10 to form a space spaced apart from the center portion, and the upper root 12 of both sides. The closed wire mesh 50 or the expanded metal 60 may be inserted into and spaced apart from each other. For example, the lower muscles 14 are the normal muscles, the upper muscles 12 are arranged only at both ends of the bottom slab 10, corresponding to the space between the upper muscles 12 which are arranged on both sides ( 3/4 of the floor slab 10) may be installed a closed wire mesh 50 or expanded metal 60. In other words, the upper part 12 is normally placed at the end where the parent moment acts to maintain structural stability, and the closed part mesh 50 or the expanded metal 60 is installed at the center part in which the constant moment acts as described above. The same principle can reduce the noise between floors. Thus, the interlayer noise can be efficiently attenuated without increasing the thickness of the floor slab 10.

In addition, in the present invention, as shown in Figure 6 (a) and (b), the closed wire mesh 50 or the expanded metal 60 may be inserted into the mortar layer 30, the bottom slab ( 10) and a shock absorbing layer 70` of appropriate thickness is further formed between the foamed concrete layer 20 and an additional closed wire mesh 50 or expanded metal 60 is inserted into the foamed concrete layer 20. Can be installed.

When the closed wire mesh 50 or the expanded metal 60 is installed inside the mortar layer 30, the sound wave is dispersed or absorbed directly under the floor finishing layer 40, and the closed wire mesh 50 or the expanded metal 60 is expanded. Some of the noise waves collided with the depressed metal 60 are weakened or extinguished through the medium inside the floor structure FS composed of several layers. In addition, the closed wire mesh 50 or the expanded metal 60 installed in the mortar layer 30 has a function of preventing cracks of the mortar layer 30.

The shock absorbing layer 70` is installed on the floor slab 10 for the purpose of insulation or sound insulation, and lightweight aggregate is used as shown in Fig. 6 (a) or AE concrete as shown in Fig. 6 (b). Panels can be used.

Particularly, lightweight aggregates may include volcanic stone desulfurized foamed plastics, recycled glass foamed aggregates, high density foamed polystyrene foams, and the like. Such lightweight aggregates are made of foamed polymer and filled with air capable of absorbing the floor impact sound therein, thereby further improving the floor impact sound attenuation efficiency.

In addition, by using the standardized AE concrete panel in the shock absorbing layer (70`) can improve the workability, it is possible to retain the insulation and sound insulation effect due to the porous for a long time.

Meanwhile, as shown in the figure, the mortar layer 30 and the bubble concrete layer 20 may be further provided with a closed wire mesh 50 or an expanded metal 60 to further maximize the attenuation effect of interlayer noise. For example, by providing the expanded metal 60 of the eye which is thin in the mortar layer 30, the solid shock wave applied to the floor can be absorbed and moved in the horizontal direction to disperse and attenuate using the dynamic elasticity of the metal material. Due to this, it is possible to effectively reduce the solid impact sound, and to effectively absorb and attenuate the air transmission sound causing the interlayer noise together with the solid impact sound. That is, the expanded metal 60 installed in the mortar layer 30 is made of a metal member made of a material having dynamic elasticity with respect to the vertical direction, and causes deformation downward in response to the vertical impact, but the deformation is restored by the restoring force. It is preferable that it is comprised so that. In addition, the foam concrete layer 20 is installed by installing expanded metal 60 having a thick eye and fastening and fixing the heating pipe 80 by using the same, and then pouring foam concrete to form the foam concrete layer 20. It can reduce the construction period and maximize the attenuation and absorption of the floor shock wave.

<Third Example >

The third embodiment of the present invention is characterized in that a PC slab 10`, which is a precast concrete member prefabricated in a factory, is used as a floor slab.

7 and 8 are cross-sectional views showing a third embodiment of a floor structure (FS) for attenuating interlayer noise according to the present invention.

The present invention is made of precast concrete, in the bottom structure (FS) in which the overlay concrete 20` is poured onto the PC slab 10` with the upper and lower roots 12 and 14 disposed therein. The PC slab 10 'is composed of a half-PC slab, wherein an additional lattice muscle 16 is installed between the upper muscle 12 and the lower muscle 14 and is fixed above the upper muscle 12. A closed wire mesh 50 having a cross-section connected continuously is installed, and the overlay concrete 20 'is poured so that the closed wire mesh 50 is embedded. It is possible to omit the bottom formwork process because the overlay concrete 20 'is placed after the closed wire mesh 50 is installed on the upper root 12, and the wave due to the shock and noise transmitted between the upper and lower layers is closed. Dispersion attenuation in the horizontal direction through the (50), as well as transmitted to the lower root 14 in the opposite direction through the lattice root 16 made of four-row as shown in Figure 7 (a) and (b) Dispersion of the wave attenuates interlayer noise.

The present invention is made of precast concrete, in the bottom structure (FS) in which the overlay concrete 20` is poured onto the PC slab 10` with the upper and lower roots 12 and 14 disposed therein. The impact reduction layer 70 is further included between the PC slab 10` and the overlay concrete 20`, and the closed shape is continuously connected to a certain cross section in the space in which the overlay concrete 20` is placed. The die mesh 50 is characterized in that the installation is inserted. That is, in the present invention, the impact reduction layer 70 is made on the PC slab 10 'manufactured as shown in FIG. 8, and the closed wire mesh 50 or the expanded metal 60 is embedded thereon. The overlaid concrete 20` may be poured.

At this time, the impact reduction layer 70 may be made of a material for thermal insulation and cushioning, such as foam rubber or EPS (Expended-Poly-Styrene) panel, the upper surface in order to increase the adhesion with the overlay concrete (20`) placed on the top Processing may be carried out.

Although the present invention has been described in connection with the preferred embodiment as mentioned above, various modifications and variations are possible without departing from the gist of the present invention, and can be used in various fields.

Therefore, the claims of the present invention include modifications and variations that fall within the true scope of the invention.

FS: floor structure
10: floor slab
10`: PC slab
12: upper muscle
14: lower muscle
16: Lattice muscle
20: foam concrete layer
20`: overcast concrete
30: mortar layer
40: floor finishing layer
50: closed wire mesh
60: expanded metal
70: impact reduction layer
70`: shock absorbing layer
80: heating piping

Claims (4)

Floor structure in which the foamed concrete layer 20, the mortar layer 30, and the bottom finishing layer 40 are sequentially stacked on the bottom slab 10 in which the upper and lower roots 12 and 14 are disposed. )in,
Inside the bottom structure (FS) is inserted into a closed wire mesh 50 or a mesh expanded expanded metal 60 of a certain cross-section connected continuously,
The upper root 12 of the bottom slab 10 is only a predetermined length from the both ends of the bottom slab 10 to form a space spaced from the central portion, the closed wire mesh in the spaced space of both the upper root 12 Floor structure to attenuate inter-noise noise, characterized in that 50 or expanded metal 60 is inserted. In claim 1,
An impact absorbing layer 70` is further formed between the bottom slab 10 and the foamed concrete layer 20,
The closed concrete net 50 or expanded metal 60 is inserted into the foam concrete layer 20,
The shock absorbing layer (70`) is a floor structure to attenuate interlayer noise, characterized in that the light aggregate or AE concrete panel (Air Entrainded Concrete Panel) is used.
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