KR102338176B1 - Noise Absorption Structure Of Slab Concrete - Google Patents

Abstract

The present invention relates to a finished ceiling structure for reducing the weight impact sound of the floor, and more particularly, by configuring a sound absorbing material in the space formed inside the ceiling during the construction of a finished ceiling generally applied in architecture and minimizing the space to form an air layer The weight of the floor that reduces the resonance generated by the elastic action of the floor to reduce the occurrence of heavy impact noise, while also maximizing the feeling of openness by increasing the ceiling height in terms of the interior as the interior space of the ceiling decreases It relates to a finished ceiling structure for reducing impact sound.
In a preferred embodiment of the present invention, a well ceiling finish material is formed in the central part of the lower surface of the apartment house floor slab, and the well ceiling part finish material is connected to the side of the well ceiling part finish material by a side finish material. In the ceiling structure, the sound-absorbing material is formed on the lower surface of the central part of the floor slab of the apartment house where the well ceiling is to be formed, and the well ceiling part finishing material is configured in close contact with the lower surface of the sound-absorbing material.

Description

Finished ceiling structure to reduce the weight impact sound of the floor {Noise Absorption Structure Of Slab Concrete}

The present invention relates to a finished ceiling structure for reducing the weight impact sound of the floor, and more particularly, by configuring a sound-absorbing material in the space formed inside the ceiling during the construction of a finished ceiling, which is generally applied in architecture, and minimizing the space to form an air layer. The weight of the floor that reduces the resonance generated by the elastic action of the floor to reduce the occurrence of heavy impact noise, while also maximizing the sense of openness by increasing the ceiling height in terms of the interior as the space inside the ceiling is reduced, enabling a comfortable living environment. It relates to a finished ceiling structure for reducing impact sound.

Currently, floor impact sound reduction technology mainly depends on the construction of floor cushioning material, but there is a limit to improving the performance of heavy impact sound. The reality is that the grade is the highest grade.

In particular, floor impact sound, which is the main culprit of inter-floor noise, is roughly divided into light impact sound and heavy impact sound. The height of the slab is closely related to the vibration of the sphere, especially the floor slab, and as confirmed by many on-site measurement results, the impact sound response magnitude is the largest at the center of the slab, where the vibration response of the floor slab is the largest. The structure of the buffer layer had a problem in that it was difficult to prevent inter-layer noise.

As a technology that is the background of the present invention, there is Utility Model Registration No. 0376919 "a structure for preventing noise between floors in an apartment house floor slab" (Patent Document 1). In the background art, 'In the noise prevention structure between floors of a multi-family house comprising a member having a sound insulation and vibration absorption function on the upper part of the floor slab, a heating pipe, and a foamed concrete layer, a sound insulation material installed on the entire upper area of the floor slab; a vibration absorber installed in the shape of a well in consideration of the copper wire on the upper portion of the sound insulating material; a heating pipe support seated on the upper portion of the protrusion of the vibration absorber; a fastening pin fastened to the fastening groove of the vibration absorber and the fastening hole of the heating pipe support; and a grill network inserted into the square hole of the heating pipe support and installed to strengthen adhesion during curing according to the pouring of foam concrete.

However, the background art also has a problem in that it is difficult to reduce the impact sound in the central part of the slab, and the configuration is complicated.

Utility Model Registration No. 0376919 "Communal house floor slab noise prevention structure"

The present invention is to solve the above problems, and by configuring a sound-absorbing material in the space formed inside the ceiling during the construction of a finished ceiling, which is generally applied in construction, and minimizing the space, resonance generated by the elastic action of the air layer. While reducing the weight impact sound by reducing Its purpose is to provide

The present invention relates to a finishing ceiling structure in which a well ceiling finish material is formed in the central part of the lower surface of a floor slab in an apartment house, and the well ceiling part finish material is connected to the side of the well ceiling part finish material by a side finish material, and is spaced apart from the bottom with a step to form an outer finish material, A sound absorbing material is formed on the lower surface of the central part of the floor slab of the apartment house where the well ceiling is to be formed, and the well ceiling part finishing material is formed in close contact with the lower surface of the sound absorbing material. An object of the present invention is to provide a finished ceiling structure for reducing the weight impact sound of the floor, characterized in that the mass damper is fixed and installed on the support at regular intervals.

In addition, the sound absorbing material 10 is to provide a finished ceiling structure for reducing the weight impact sound of the floor, characterized in that the density of 12 ~ 20kg / ㎥.

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In addition, it is intended to provide a finished ceiling structure for reducing the weight impact sound of the floor, characterized in that the mass damper penetrates in the longitudinal direction in the widthwise central portion of the lower surface to form a seating hole, and a support is inserted into the seating hole to be fixed.

In addition, a plurality of supports are formed at regular intervals to connect from the side finishing material to the outer wall direction, and a mass damper is respectively fixed to the upper portion of the support, and the longitudinal ends of the mass damper are seated on the upper portion of the support to provide a plurality of mass dampers. An object of the present invention is to provide a finished ceiling structure for reducing the weight impact sound of the floor, characterized in that the side support is configured parallel to the side finishing material to be connected.

In addition, it is intended to provide a finished ceiling structure for reducing the weight impact sound of the floor, characterized in that the weight per unit area of the mass damper is 5.7 ~ 6.7 kg/m2.

The finished ceiling structure for reducing the weight impact sound of the floor of the present invention consists of a sound absorbing material in the space formed inside the ceiling during the construction of the finished ceiling, which is generally applied in construction, and minimizes the space, which is generated by the elastic action of the air layer. While reducing resonance to reduce the occurrence of weight impact sound, as the interior space of the ceiling is reduced, the ceiling height is increased from the interior aspect to maximize the sense of openness, which has a very useful effect of realizing a comfortable living environment.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and serve to further understand the technical spirit of the present invention together with the detailed description of the present invention, so the present invention is limited to the matters described in the accompanying drawings It should not be construed as being limited.
1 is a cross-sectional view showing an embodiment of the finished ceiling structure for reducing the weight impact sound of the floor according to the present invention.
2 is a graph showing the results of measuring the weight impact sound according to the depth of the ceiling plate.
3 is a cross-sectional view and a plan view showing another embodiment of the finished ceiling structure for reducing the weight impact sound of the floor according to the present invention.
4 is a diagram illustrating a fixing structure of the mass damper in FIG. 3 .
5 is a graph showing the results of measuring the weight impact sound for each ceiling condition.

Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the presented embodiments are illustrative for a clear understanding of the present invention, and the present invention is not limited thereto.

Hereinafter, the technical configuration of the present invention will be described in detail according to a preferred embodiment.

1 is a cross-sectional view showing an embodiment of the finished ceiling structure for reducing the weight impact sound of the floor according to the present invention.

The finished ceiling structure for reducing the weight impact sound of the floor of the present invention is applied in the finished ceiling structure in which the well ceiling is configured in the central part of the lower surface of the floor slab 1 in the apartment house to reduce the weight impact sound of the floor do.

In general, the well ceiling part is formed with a well ceiling finishing material 20 to a certain size on the lower surface of the central part of the floor slab 1, and the side of the well ceiling finishing material 20 is lowered to have a step difference with the well ceiling finishing material 20. The outer finishing material 40 is formed spaced apart, and the well ceiling part finishing material 20 and the outer finishing material 40 are configured to be closed by the side finishing material 30 .

In particular, in the present invention, the sound absorbing material 10 is formed on the lower surface of the central part of the floor slab 1 of the apartment house where the well ceiling is to be formed, and the well ceiling part finishing material 20 is configured in close contact with the lower surface of the sound absorbing material 10. By removing the space behind the ceiling from the ceiling of the well, it is possible to reduce the resonance caused by the elastic action of the air layer, thereby reducing the occurrence of heavy impact noise. It is to create a comfortable living environment.

As a result of experimentally examining the effect of the impact sound on the performance of the floor impact sound according to the depth of the ceiling fan (rear air layer), the weight impact sound appears most unfavorable at a depth of 100 to 150 mm, and since the space behind the ceiling is the main cause of performance degradation, in the present invention, the ceiling The rear space is removed, and a sound-absorbing material 10 having sound-absorbing properties is formed between the lower surface of the floor slab 1 and the well ceiling part finishing material 20 to reduce the weight shaft sound.

The well ceiling part finishing material 20, the side finishing material 30 and the outer finishing material 40 may be made of various materials such as known gypsum board and plywood, and the sound absorbing material 10 is a porous material such as glass wool with sound absorption properties. material to be formed.

The density of the sound absorbing material 10 may be formed in various ways depending on the material, and it is effective to reduce the weight impact sound to be composed of a density of 12 to 20 kg/m 3 .

Usually, it is a general tendency to try to finish by ignoring a narrow gap and attaching one gypsum board directly, but in the present invention, the well ceiling part finishing material 20 and In order to easily fill the narrow gap between the floor slabs 1, the sound absorbing material 10 should use a material with a density of 12 kg/m3 or higher, and using a material with a density of 20 kg/m3 or higher is inefficient and increases the unit price. It is preferable to use a material with a density of m3.

2 is a graph showing the results of measuring the weight impact sound according to the depth of the ceiling plate.

As a result of experimentally examining the effect of the ceiling panel depth (rear air layer) on the performance of the floor impact sound, the weight impact sound was most unfavorable at a depth of 100 to 150 mm. Based on 275, a trend line was derived and shown as in FIG. 2 .

Currently, most apartment houses in Korea are constructed around 170mm, so performance distribution is formed in the top 8% of unfavorable conditions when judging based on performance.

Therefore, in the present invention, since the impact sound response amplitude is the largest at the central part of the slab where the vibration response of the floor slab is the largest, the sound absorbing material 10 is formed on the lower surface of the floor slab 1 in the well ceiling formed in the central part of the slab. And to configure the well ceiling part finishing material 20 in close contact with the sound absorbing material 10 to remove the ceiling space from the well ceiling part and to reduce the weight impact sound by configuring the sound absorbing material 10 .

division Well Ceiling Area Ratio
(well ceiling/living room) note 75 types or less 45% or more living room area
Excluding hallways More than 75 to less than 100 50% or more more than 100 types 60% or more

Table 1 is a graph showing an example of the well ceiling area ratio.

As shown in Table 1, the area of the living area is the area including the well ceiling, excluding the hallway, and based on this, calculate the well ceiling area ratio in proportion to the well ceiling area.

In order to secure the maximum area that can be installed a well ceiling based on the living room, it is designed in a structure that deletes the space behind the ceiling in all parts except for the width of 600 mm or more on both sides and the width of 800 mm or more on the window side for air conditioner installation. About 45-60% can be designed as well ceilings with no backspace.

3 is a cross-sectional view and a plan view showing another embodiment of the finished ceiling structure for reducing the weight impact sound of the floor according to the present invention, and FIG. 4 is a view showing the fixing structure of the mass damper in FIG. 3 .

In addition, since space is required to construct facilities such as ducts, sprinklers, and air conditioners, the space between the floor slab 10 and the outer finishing material 40, which is a part that cannot inevitably remove the rear space, is a mass damper of a certain size. (52) can be configured to help reduce the weight impact sound.

Such a mass damper 52 is a material having a high density per unit area, and may be made of a material such as stone or slag. A fixed support 51 may be formed in the space between the lower surfaces of the , and the mass damper 52 may be fixedly installed at regular intervals on the fixed support 51 .

The mass damper 52 may be installed to be fixed to the fixed support 51, and in particular, the mass damper 52 penetrates in the longitudinal direction in the width direction central portion of the lower surface to form a seat hole 521, and the seat hole ( The mass damper 52 can be easily installed by inserting the fixing support 51 into the 521 to be fixed.

The fixed support 51 can be made to use a square material such as a square piece of wood, and a plurality of mass dampers 52 are fixed to the fixed support 51 except for the space in order to construct facilities such as ducts, sprinklers, and air conditioners. can

In particular, the fixed support 51 is connected in the direction of the outer wall from the side finishing material 30 so that a plurality of them are formed at regular intervals, so that the mass damper 52 is fixed to the upper portion of the fixed support 51, respectively. .

At this time, at both ends of the mass damper 52 in the longitudinal direction, the side support 53 is seated on the upper portion of the fixed support 51 to connect the plurality of mass dampers 52 in parallel with the side finishing material 30. By connecting the plurality of mass dampers 52 with the side finishing material 30 , it is possible to effectively respond to the heavy impact sound.

In this way, the mass dampers 52 are arranged at regular intervals to evenly distribute the load, and in the case of a ceiling, they are installed at equal intervals to evenly distribute them in a narrow area. It is installed using the more densely fixed support 51 and the side support 53, and the mass dampers 52 are arranged at regular intervals to evenly distribute the load.

In particular, since the mass damper 52 may have an effect on the finish quality when deformation occurs due to the deflection of the finished ceiling, the appropriate load was derived through a mock-up experiment for about two months using weights, and as a result, 5.7 ~ 6.7 kg/ m2 was found to be adequate. If more load is applied, defects in the quality of the painting may occur due to the deflection of the finished ceiling.

<Experimental example>

5 is a graph showing the results of measuring the weight impact sound for each ceiling condition.

A weight impact sound performance comparison experiment was conducted according to the ceiling structure.

Condition heavy impact sound Example 1 Well ceiling minimization structure 50 dB Example 2 Minimize well ceiling + MD 5.7kg/㎡ 49 dB Example 3 Minimize well ceiling + MD 3.9kg/㎡ 50 dB Example 4 Minimal well ceiling + MD 2.0kg/㎡ 50 dB Comparative Example 1 no ceiling 49 dB Comparative Example 2 general well ceiling 51 dB Comparative Example 3 Flat ceiling (structure without a well) 52 dB

As shown in Table 2, in Example 1, the sound absorbing material 20 is formed between the floor slab 1 and the well ceiling part finishing material 20 to remove the ceiling space, and Examples 2 to 4 are implemented It is an embodiment in which the mass damper 52 is configured on the side of the well ceiling in the configuration of Example 1, Comparative Example 1 has a structure without a ceiling, Comparative Example 2 is a general well ceiling, and Comparative Example 3 is a flat ceiling without a well ceiling. The weight impact sound in the structure was measured, which is shown in FIG. 5 .

As shown in Table 2 and FIG. 5 , Comparative Example 1 was measured at 49 dB in weight impact sound, showing the best performance, and Comparative Example 3 was measured at 52 dB, showing the most unfavorable performance.

In addition, as in Comparative Example 2, the conventional well ceiling was 1 dB more advantageous than the flat ceiling of Comparative Example 3, but the structure for minimizing the well ceiling of Example 1 was measured to be 1 dB more advantageous than Comparative Example 2.

In addition, in the embodiment using the mass damper, the weight per unit area of the mass damper 52 was reduced by 1 dB when 5.7 kg, and improved to the same level as the structure without the ceiling of Comparative Example 1.

The finished ceiling structure for reducing the weight impact sound of the floor of the present invention consists of a sound-absorbing material in the space formed inside the ceiling during the construction of the finished ceiling, which is generally applied in architecture, and minimizes the space, which is generated by the elastic action of the air layer. While reducing resonance to reduce the occurrence of heavy impact sound, as the interior space of the ceiling is reduced, the ceiling height is increased from the interior aspect to maximize the sense of openness, which has a very useful effect in enabling a comfortable living environment.

So far, the present invention has been described in detail with reference to the presented embodiments, but those skilled in the art can make various modifications and modified inventions without departing from the technical spirit of the present invention with reference to the presented embodiments. will be. The present invention is not limited by such variations and modifications, but only by the claims appended hereto.

1: floor slab
10: sound absorbing material
20: Well ceiling part finishing material
30: side finish
40: outer finishing material
51: fixed support
52: mass damper
521: seating hole
53: side support

Claims (6)

A well ceiling part finishing material 20 is formed in the central part of the lower surface of the apartment house floor slab (1), and it is connected to the side of the well ceiling part finishing material 20 by a side finishing material 30, and is spaced apart from the bottom with a step, and the outer finishing material In the finished ceiling structure in which (40) is formed,
A sound-absorbing material (10) is formed on the lower surface of the central part of the floor slab (1) of the apartment house where the well ceiling is to be formed,
The well ceiling part finishing material 20 is configured in close contact with the lower surface of the sound absorbing material 10,
A fixed support 51 is formed in the space between the outer finishing material 40 and the lower surface of the apartment house floor slab 1, and the mass damper 52 is fixed and installed at regular intervals on the fixed support 51. Finished ceiling structure to reduce the weight impact sound of the floor. The method according to claim 1,
The sound-absorbing material (10) is a finished ceiling structure for reducing the weight impact sound of the floor, characterized in that the density of 12 ~ 20kg / ㎥. delete The method according to claim 1,
The mass damper 52 penetrates in the longitudinal direction in the central part of the width direction of the lower surface to form a seat hole 521, and the fixed support 51 is inserted into the seat hole 521 to be fixed. Finished ceiling structure for reduction. 5. The method according to claim 4,
A plurality of fixed supports 51 are formed at regular intervals to connect from the side finishing material 30 to the outer wall direction,
A mass damper 52 is fixed to the upper portion of the fixed support 51, respectively,
At both longitudinal ends of the mass damper 52, the side support 53 is seated on the upper portion of the fixed support 51 to connect the plurality of mass dampers 52 in parallel with the side finishing material 30, characterized in that the side support 53 is configured Finished ceiling structure to reduce the weight impact sound of the floor. The method according to claim 1,
The mass damper 52 has a weight per unit area of 5.7 to 6.7 kg/m 2 .

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