KR20100102406A - Floor structure for reducing impact sound by heavyweight bodies - Google Patents

Abstract

PURPOSE: A floor structure for reducing impact sound by a heavyweight body is provided to be applied to an apartment house by effectively reducing heavyweight impact sound of a low frequency band without increment of slab thickness. CONSTITUTION: A floor structure for reducing impact sound by a heavyweight body is constituted as follows. A space layer is formed between a lower slab(10) and an upper mortar layer(50) in the floor structure. Multiple heavyweight bodies having unit weight bigger than the slab are mounted on an isolation shock absorber(20) in the space layer and are dispersedly arranged in order not to contact slab and a mortar layer.

Description

Floor structure for reducing impact sound by heavyweight bodies

The present invention relates to a floor structure for reducing noise between layers, and more particularly, in the space layer between the lower slab and the upper mortar layer, a plurality of weights having a unit weight larger than that of the slab is seated on the insulating buffer. The present invention relates to a floor structure having a low frequency band heavy impact sound by distributing non-contact with a slab and a mortar layer.

In the case of a multi-storey building, the upper floor floor and the lower floor ceiling share the same slab with the same structure, and thus, various noises generated in the upper floor are transmitted to the lower floor or the neighboring generation through the floor slab. This problem becomes a fire of disputes between the upper and lower residents, especially in the multi-family housing. In order to solve the floor impact sound problem of multi-family houses, Korea has established "Regulations on Housing Construction Standards" to set the standard for preventing noise between floors for improvement of residential environment. Has been implemented since. Here, floor shocks between floors of apartment buildings are divided into light impact sounds and heavy impact sounds, which are light and hard impact sounds (such as small objects falling), have high frequency bands, and heavy impact sounds (such as children running). Sound) is a shock sound caused by heavy and soft impact and has a low frequency band. In the above regulations, the floor impact sound standard is set to 50 dB or less for the heavy impact sound and 58 dB or less for the light impact sound.

In the construction of a common apartment house, the floor structure should be (1) laying insulation (more than 20 mm) on the concrete slab floor, (2) placing light-weight foam concrete (more than 40 mm) on it and curing curing (3) on it. It has been completed by installing a hot water circulation pipe (4) finishing the curing of the finishing mortar (more than 40㎜) and finishing with the final floor finish. It is also possible to change the top and bottom positions of the insulation and lightweight foam concrete.However, in recent years, as consumer complaints about the floor-floor impact sound noise problem have emerged as a social problem, the insulation is replaced with a vibration-proof soundproof cushion or a separate cushion is added. The structure is changing.

However, the change in the structure form as described above, although the effect to some extent to reduce the light impact sound was not significantly reduced. Thus, a method of increasing the reference thickness of the slab from the conventional 12 ~ 13cm to 18cm or more as a method for reducing the weight impact sound has been proposed. This method increases the stiffness of the floor slab so that the slab does not vibrate easily. However, it is still not able to reduce the weight impact sound to less than 50 dB. Therefore, to meet this criterion, the thickness of the slab must be further increased. do.

On the other hand, Figure 1 is a graph showing the vibration acceleration change according to the presence or absence of the brick wall installation, as shown can be seen that the vibration acceleration is increased in the 30 ~ 70Hz band when the wall and the slab is integrated.

In addition, Figure 2 shows the test body (wall structure, moment frame) for the frame method, Figure 3 and Figure 4 shows the results of the impact sound impact evaluation according to the frame method and wall joining method. Impact sound impact assessment is not integrated with the slab with the steel plate (50mm styrofoam, double-sided iron plate finish) on the open part (two sides without wall construction in the wall structure, all four sides in the moment frame) in the test body as shown in FIG. In this way, the wall treatment (steel plate finishing) and the brick (0.5B) and mortar furnace slab integrally (wall, mortar finish) was carried out in two ways. Figure 3 is a graph showing the change in sound pressure (SPL) according to the wall joining method, as shown, in the case of iron plate wallboard finish results that the single evaluation value by the inverse A curve is almost similar results regardless of the frame method (53dB for both structures On the other hand, in the case of brick and mortar finish, it can be seen that higher sound pressure is shown in the wall structure than in the moment frame in the low frequency band below 160Hz. In this case, the single estimate based on the inverse A curve was 58 dB in the wall structure, while the moment frame was 54 dB due to the difference in the low frequency band. Figure 4 is a graph showing the change in sound pressure (SPL) according to the frame method, as shown in the wall structure or the moment frame overall shows a higher sound pressure trend in the brick and mortar finish, but a single evaluation value by the inverse A curve In the moment frame, the difference of 1dB can be confirmed, whereas in the wall structure, the difference of 5dB can be confirmed. In particular, in FIGS. 3 (a) and 4 (a), the sound pressure in the low frequency band is relatively high in the wall structure which is finished with brick and mortar. Based on these results, it can be said that in the structure in which the slab and the wall are integrated, special management of the sound pressure in the low frequency band is required.

The present invention was developed to improve the problems of the related art of reducing noise between floors by increasing the thickness of the conventional slab, and can effectively reduce the weight shock sound of the low frequency band without increasing the thickness of the slab. It is a technical object to provide an applicable floor structure.

In order to solve the above technical problem, the present invention, in the floor structure is provided between the bottom slab and the mortar layer of the upper slab in the state in which a large number of weights larger than the slab in the space layer is seated on the insulating buffer material And it provides a impact sound reduction floor structure by the weight body characterized in that the dispersing is arranged in contact with the mortar layer.

According to the present invention, the following effects can be expected.

First, it is possible to effectively reduce the weight shock sound in the low frequency band without increasing the slab thickness.

Second, it can be applied to existing buildings as well as new buildings with economical and short construction period.

Third, it can be applied to a ramen structure or a flat plate structure, but it can be more usefully applied to a wall structure in which a slab and a wall are integrally constructed, such as an apartment house.

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

Figure 5 shows various embodiments of the floor structure according to the present invention, Figures 6 and 7 are insulating buffers 20, the weight according to adopting the corrugated plate as a protective cover in the bottom structure of Figure 5 (b), respectively 30 shows the laminated state of the protective cover 40 and the corrugated plate 41, and FIG. 8 shows the pillar plate 42 as a protective cover in the bottom structure of FIG.

In the floor structure according to the present invention, in the bottom structure in which a space layer is provided between the lower slab 10 and the upper mortar layer 50, a plurality of weight bodies 30 having a larger unit weight than the slab 10 in the space layer. The dog is disposed in contact with the slab 10 and the mortar layer 50 in a state in which the dog is seated on the isolation buffer 20. In other words, since the natural frequency generating the noise felt by the human being is higher order frequency than the second order, vibration reduction for these vibration modes is required. In the present invention, the vibration causing noise is separated from the shock absorber 20 and the weight 30. ) To control the noise to the floor impact sound.

Since the vibration energy can be controlled by the behavior of the insulating buffer 20 and the weight body 30, in the present invention, a space layer is provided between the slab 10 and the mortar layer 50, and the weight body 30 in the space layer. ) Is proposed to be placed in a state seated on the insulating buffer (20). In addition, in order to prevent the concentrated load from being applied by the weight body 30, a multiple method of distributing the plurality of weight bodies 30 is proposed, and further, the weight body 30 is slab 10 in a preferred manner. It is suggested to disperse and prepare prepared with the weight having 5 ~ 10% of the weight of). The weight range of the above and the weight body 30 is proposed in consideration of the load increase with the impact sound reduction effect.

In Figure 5 shows a specific scheme for the isolation installation of the weight body 30, the isolation installation of the weight body 30 is to install the isolation buffer 20 on the slab 10, the weight body (on the isolation buffer 20) 30 is provided, the protective cover 40 which covers the weight body 30 while being in contact with the weight body 30 is provided, and the mortar layer 50 is processed on the protective cover 40. The isolation buffer 20 may be partially installed only at the installation position of the weight body 30, or may be installed over the entire bottom of the slab 10. FIG. 5 (a) shows that the insulating buffer 20 is partially installed only at the installation position of the weight body 30, and the protective cover 40 is simultaneously covered by the insulation buffer 20 and the weight body 30. An example of the structure, Figure 5 (b) is to install the insulating buffer 20 to the bottom of the slab 10 as a whole and to provide a protective cover 40 to the bone plate 41 to cover the weight 30. Figure 5 (c) is an example of the floor structure completed by the installation of the insulating shock absorber 20 to the bottom of the slab 10 as a whole, as well as providing a protective cover 40 to the pillar plate 42, the weight 30 It is an example of the floor structure completed by covering.

In the bottom structure according to the present invention, the insulating buffer 20 is a member that serves to isolate the weight 30 and the slab 10 while exhibiting a cushioning effect. As the insulating buffer 20, synthetic resins such as EVA (Ethylene Vinyl Acetate), PS (Poly Styrene), PE (Poly Ethylene), and PU (Poly Urethane) are foamed, as well as various materials such as viscoelastic materials, metal springs, and air springs. It can be adopted, the thickness is suitable about 10mm. However, the insulating buffer 20 of the viscoelastic material or the metal spring to the air spring is more advantageous for absorbing vibration energy.

In the floor structure according to the present invention, the weight body 30 is installed in a state in which the unit weight is greater than that of the slab and is seated on the insulating buffer 20, whereby the impact sound transmitted to the slab 10 is the weight body 30. In the process of re-delivery to the buffer is to be buffered by the isolation buffer (20). Representative weight body 30 may be iron plate or heavy concrete or lead which is widely used in the seismic isolator.

The weight 30 may be fixedly seated on the isolation buffer by a separate adhesive means, but in some cases may be fixed to the isolation buffer 20 by the weight of the weight itself. The weight body 30 may be provided in a block shape as shown in FIG. 6 (a), but for the convenience of installation, a bar weight body as in FIG. 6 (b) is preferable.

In the bottom structure according to the present invention, the protective cover 40 is a member that serves to isolate the weight body 30 and the mortar layer 50. That is, a space layer in which the weight body 30 is accommodated is formed between the slab 10 and the weight body 30 by the protective cover 40. The protective cover 40 is installed in a manner of separately covering each of the plurality of weights 30 dispersedly arranged as shown in Figure 5 (a), as well as prepared by the bone plate 41 or pillar plate 42 It can install by the method of covering the several weight body 30 distributedly arrange | positioned simultaneously. In FIG. 5 (b), the floor structure adopting the protective cover 40 as the corrugated plate 41 can be confirmed, and in FIG. 5 (c), the floor using the protective cover 40 as the pillar plate 42 as shown in FIG. 8. You can check the structure.

As the protective cover 40, the corrugated plate 41 is a member in which an upwardly convex peak portion 41a and a downwardly concave valley portion 41b are continuously formed, as shown in FIGS. 6 and 7. 42 is a member provided with a plurality of support pillars 42b spaced apart from each other under the flat plate 42a, as shown in FIG. 8. It is advantageous in that it can simultaneously cover 30). When the corrugated plate 41 to the column plate 42 is installed on the slab 10 to the insulating buffer 20, the space layer is naturally formed under the hill 41a of the bone plate or below the flat plate 42a of the column plate. This space layer becomes a space in which the weight body 30 is accommodated. The corrugated plate 41 to the column plate 42 is preferably adopted to be made of a foamed synthetic resin, and if considering the performance first, the EVA series is preferable, and considering the economic efficiency compared to the PS series is preferable.

In particular, according to the patent application 10-2007-41899, the bone plate 41 has a minimum thickness of 14 mm so that the portion leading from the bone portion 41b to the ridge 41a has an inclination of 45 to 65 °. Most preferably, the bone-shaped plate 41 made of a foamed synthetic resin is more preferred. More preferably, the distance between the peak 41a and the peak 41a is about 120 mm, and the height from the bottom of the valley 41b to the ceiling of the peak 41a is 65 mm. Inside and outside, the thickness of the peak portion 41a is about 30 mm, the thickness of the valley portion 41b is about 35 mm, and the thickness of the portion extending from the valley portion 41b to the peak portion 41a is about 15 mm. Of course, the dimension can be adjusted according to the special requirements, and as shown in Figure 7 (b) it can also be formed in the groove 41c in the lower surface of the valley (41b).

On the other hand, the pillar plate 42 is a member provided with a plurality of support pillars 42b spaced apart from each other under the flat plate 42a as shown in FIG. 8, wherein the support pillars 42b have various shapes such as cylinders as well as polygonal columns. You can arrange.

Mortar layer 50 in the floor structure according to the invention is formed on the protective cover 40, the bottom structure is completed by the formation of the mortar layer (50). The thickness of the mortar layer 50 is suitable as it is about 40 mm above the highest point (mountain of the bone plate) of the protective cover 40. However, the heating pipe may be piped in the process of forming the mortar layer 50 for the ondol floor.

9 shows a simulation result according to the arrangement of the weight body 30. The simulation was carried out under the condition that a rod-shaped iron plate was prepared as a weight body to complete the bottom structure as shown in FIG. As shown in FIG. 9, it can be seen that the more the weight body 30 is disposed, the more favorable the effect of reducing the impact. If the result of FIG. 9 is evaluated by the method according to the inverse A curve defined in the Korean Industrial Standard, the weight body 30 is not disposed (No control) is 51 dB, and the weight body 30 is placed on the slab 10 weight. When the 5% disposed (MTMD 5%) is 47dB, the weight 30 is placed 10% of the weight of the slab 10 (MTMD 10%) is 44dB. According to the result, it can be said that the present invention satisfies the "regulation on housing construction standards".

On the other hand, when the slab and the wall is integrally treated with the brick and mortar as described above in the prior art, the weight shock sound of the low frequency band was found to be amplified. Considering this, the floor structure according to the present invention is the slab and the wall. It is expected that the present invention can be more preferably applied to integrated wall structures. Of course, when applied to structures such as ramen structure or flat plate structure will have an advantageous effect.

The present invention has been described in detail above with reference to specific embodiments, but the embodiments are only for illustrating the present invention, and thus the embodiments substituted, added, and modified within the scope without departing from the spirit of the present invention are also described below. It will be said to belong to the protection scope of the present invention as defined by the claims appended hereto.

1 is an experimental result of the impact sound impact evaluation according to the brick wall installation.

2 to 4 are the test body and the test results for the impact sound impact evaluation according to the frame method and the wall joining method.

5 illustrates various embodiments of a floor structure according to the present invention.

Figure 6 shows the laminated state of the insulating buffer, the weight and the bone plate in the floor structure according to Figure 5 (b).

Figure 7 shows a bone plate preferably applied to the floor structure according to Figure 5 (b).

Figure 8 shows a pillar plate that can be applied to the floor structure according to Figure 5 (c).

9 shows simulation results according to the weight arrangement.

<Code Description of Main Parts of Drawing>

10: slab

20: Quarantine

30: weight

40: protective cover

41: bone plate

42: pillar plate

50: mortar layer

Claims (6)

In the bottom structure in which the space layer is provided between the lower slab 10 and the upper mortar layer 50, a plurality of weights 30 having a unit weight greater than that of the slab 10 is seated on the insulating buffer 20 in the space layer. The impact sound reduction floor structure by the weight body, characterized in that the dispersing arrangement in contact with the slab 10 and the mortar layer 50 in a state. In claim 1, Install the insulating buffer 20 on the slab 10, Installing the weight body 30 on the isolation buffer 20, A protective cover 40 covering the weight body 30 while being in contact with the weight body 30, Impact sound reduction floor structure by the weight characterized in that the mortar layer 50 is treated on the protective cover 40. In claim 2, The isolation buffer 20 is a shock absorbing floor structure by the weight, characterized in that made of a viscoelastic material or a metal spring or air spring. In claim 2, The protective cover 40 is installed with a bone plate 41 formed with a ridge 41a and a valley 41b continuously, The weight body 30 is the impact sound reduction floor structure by the weight body, characterized in that installed to be accommodated in the peak (41a) of the bone plate. In claim 2, The protective cover 40 is installed by a column plate 41 provided with a plurality of support pillars 42b spaced apart from each other under the flat plate 42a, The weight body 30 is the impact sound reduction floor structure by the weight body, characterized in that installed between the support pillars (42b) of the pillar plate. The method according to any one of claims 1 to 5, The plurality of weight body 30 is the impact sound reduction floor structure by the weight body, characterized in that prepared by dispersing the weight having 5 to 10% of the weight of the slab (10).

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