KR200488126Y1 - Ceiling structure comprising air permeable molding - Google Patents

Abstract

The present invention relates to a ceiling structure including an air-permeable molding for a house, which can further improve a floor impact sound in constructing a ceiling of a building, and air in the ceiling layer is ventilated through the ventilation molding and ceiling structure of the present invention The floor impact sound performance can be improved by reducing the air spring effect of the ceiling layer.

Description

[0001] Ceiling structure comprising air permeable molding [0002]

The present invention relates to a ceiling structure including an air-permeable molding for a house, which can improve a floor impact sound in the construction of a ceiling of a building, in which the air of the ceiling layer is ventilated into a household, To a ceiling structure including a ventilation molding that can improve the floor impact sound performance by reducing the floor impact sound performance.

In Korea, the penetration rate of apartment houses is continuously increasing, but the floor structure that is typically used is a floating floor structure using a cushioning material suitable for mass construction. In addition, although the performance of the floor impact sound is restricted by the law, there is a problem that the blocking performance recognized in the laboratory is not reproduced in the field, and there are many questions about the effectiveness of the regulation system. The main reason that the floating floor method using the cushioning material does not block the impact sound is as follows. First, resonance is generated in the low frequency band to deteriorate the impact sound reducing effect. Second, in the air layer of the ceiling installed in the lower layer generation, there is a problem that the impact sound of the low frequency band is similarly amplified by the action of the air spring to be transmitted to the lower layer generation more.

Especially, the phenomenon amplified by the ceiling of the lower layer generation has become a bigger problem due to the amendment of the law. According to the Enforcement Decree of the Fire Service Installation and Safety Management Act, in the case of specific fire protection objects with 11 stories or more, A new requirement was introduced to install sprinklers (December 15, 2008). According to the regulations (2002.02) on building equipment standards, it is obligatory to install natural ventilation equipment or forced ventilation equipment for apartment houses over 100 generations. Therefore, in recent apartment houses, air ducts of at least 180 mm are formed by using wooden frames or lightweight steel frames on ceilings to install ducts of sprinklers and ventilation units. Specifically, a gypsum board spaced by 180 mm or more from the lower surface of the ceiling slab is installed, and a ceiling structure is installed, and an air layer is formed between the ceiling slab and the gypsum board. However, in the conventional house, since the ceiling gypsum board is installed after securing a space of about 30 mm, the impact sound amplification phenomenon is not a big problem. However, since a space of about 200 mm is secured for installing the sprinkler and the ventilation unit, The phenomenon is pointed out as a big problem. Therefore, it is necessary to evaluate the influence of the ceiling air layer on the performance of the floor impact sound and suggest alternatives.

Meanwhile, the conventional ceiling molding was a simple interior element. In detail, it does not have a separate function as a final finishing material applied to a portion where a ceiling gypsum board and a wall gypsum board meet. Conventional technologies in the field include a combination of a ceiling molding to improve workability, an improvement method of a ceiling, a method of joining with a gypsum board, and a technique of attaching a picture frame to a picture rail molding- It was done. Therefore, it is necessary to develop a ceiling molding capable of reducing interlayer noise.

The object of the present invention is to provide a ceiling structure including a ceiling-closing molding capable of reducing the interlayer noise generated in the upper layer.

In order to achieve the above object, the present invention provides a ceiling slab, A main ceiling plate installed at a rim of the well ceiling plate and provided at a lower portion of the well ceiling plate with a step in height direction with the well ceiling plate; A step closing side wall connecting the well ceiling plate and the main ceiling plate to close between the well ceiling plate and the main ceiling plate; And a ventilating molding installed to connect the main ceiling plate to the wall surface finish and having a plurality of ventilation holes.

In the present invention, the ventilating molding for ceiling finish is provided between the ceiling finish and the wall finish, and includes a plurality of vent holes, which can satisfy the following formula.

[Equation 1]

10%? HA / MA 占 100? 30%

HA / MA x 100 represents the aperture ratio, HA represents the total area of the vent holes, and MA represents the total area of the molding.

In the present invention, the vent hole may have at least one shape selected from the group consisting of a circle, a slit, an ellipse, and a polygon.

The air-permeable molding according to the present invention may be composed of at least one member selected from the group consisting of metal, wood, plastic and ceramic.

The ventilation molding according to an embodiment of the present invention includes a horizontal member having the plurality of vent holes formed therein; A vertical member extending upwardly from one end of the horizontal member and in close contact with the wall surface finish; And a receiving member which extends to a lower portion of the horizontal member and is bent toward the ceiling finish material and then upwardly bent to form a space into which the ceiling finish material is inserted. Further, a rib formed on the rear surface of the receiving member may be further included can do.

According to another embodiment of the present invention, the air-permeable molding comprises a horizontal member having the plurality of vent holes formed therein; A vertical member extending downward from one end of the horizontal member and in close contact with the wall surface finish; And a receiving member extending to the lower portion of the horizontal member and folded toward the ceiling finishing material to form a space into which the ceiling finishing material is inserted.

According to yet another aspect of the present invention, a breathable molding comprises a hollow hollow body having a stepped shape having a stepwise boundary with a profile of a cross section spaced apart from each other by a predetermined distance, extending and extending along one direction; A plurality of partitions disposed at both ends of the hollow body in one direction and formed as a plane perpendicular to the one direction to divide an internal space of the hollow body into a plurality of spaces; And a plurality of vent holes extending along the one direction in the hollow body and opened along another direction perpendicular to the one direction.

In the present invention, the step-closed side wall may be made of a breathable material.

The ceiling structure according to the present invention may further include a filter installed on an inner surface of the stepped side wall to block foreign matter.

In the present invention, the main ceiling plate may be spaced 180 mm or more from the ceiling slab.

A ceiling structure according to an embodiment of the present invention includes a plurality of main ceiling panel slats installed to be spaced apart from each other from a lower surface of a ceiling slab so as to separate a main ceiling plate from the ceiling slab; A plurality of wells for a ceiling panel suspended from the ceiling slab and spaced apart from each other so as to be spaced apart from the ceiling slab; A plurality of main ceiling panel semi-planes horizontally connecting the plurality of main ceiling panel halves; And a plurality of wells for the well ceiling plate horizontally connecting the plurality of well ceiling panels to each other.

In the ceiling structure according to one embodiment of the present invention, the main ceiling plate is attached to the lower portion of the main ceiling panel and the well ceiling panel can be attached to the lower portion of the ceiling panel for the well ceiling panel. Alternatively, the main ceiling plate may be attached to a lower portion of the main ceiling panel ladder and a lower portion of the main ceiling panel bimetal, and the well ceiling plate may be attached to the lower portion of the lid for the well ceiling plate and the lower portion of the bimetal plate for the well ceiling plate.

The ceiling structure according to another embodiment of the present invention includes a plurality of hanger bolts spaced apart from each other from a lower surface of a ceiling slab so as to separate a main ceiling plate and a well ceiling plate from the ceiling slab; A plurality of hangers provided under the plurality of hanger bolts; A plurality of carrying channels coupled to and supported by the plurality of hanger members; A plurality of embers installed below the plurality of carrying channels to be perpendicular to the carrying channel; And a plurality of embroideres for engaging the embroidering channels with the plurality of carrying channels.

Through the ventilation molding and ceiling structure according to the present invention, the air of the ceiling layer can be ventilated into the household to reduce the air spring effect of the ceiling layer, thereby improving the floor impact sound performance.

According to the present invention, the noise level of the apartment building can be reduced to about 2 dB. In order to verify this, the drill hole was drilled in the whole ceiling gypsum board. As a result, it was confirmed that the weight impact noise was reduced by 5dB when the ceiling was closed by the general gypsum board when the piercing gypsum board was finished. Also, the masonry construction of the developed molding was based on a ceiling structure including a well ceiling plate, and a heavy impact sound blocking effect was confirmed to be about 2 dB.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of an air-permeable molding for ceiling closure according to one embodiment of the present invention.
2 is a perspective view of an air-permeable molding for ceiling closure according to another embodiment of the present invention;
FIG. 3 is a perspective view showing a coupling structure between the ventilation molding and the ceiling finishing material for various ceiling finishes according to the present invention.
4 is a cross-sectional view of a ceiling structure according to an embodiment of the present invention;
5 is a cross-sectional view of a ceiling structure according to another embodiment of the present invention.
6 shows the principle of reducing the interlaminar noise of a breathable ceiling structure according to the present invention.

The present invention relates to an air-permeable molding and a ceiling structure including the same, and relates to a technique of reducing the inter-layer noise by improving the ceiling structure.

The ceiling molding is a closing member that serves to close the ceiling structure that is applied to the joint of the wall of the building and the ceiling finishing material, that is, the edge of the ceiling. Conventional ceiling molding is a simple interior element, The air-permeable molding is characterized by being able to reduce interlayer noise by including a plurality of ventilation holes.

The newly developed ventilation molding to maintain the function as the conventional finishing material while mitigating the floor impact noise is different from the conventional molding in that the existing gypsum board is installed after the wall and ceiling gypsum board is installed, The air in the ceiling can communicate with the generation through the molding to reduce the air spring effect of the ceiling layer.

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

1 is a perspective view of an air-permeable molding for ceiling finishing according to an embodiment of the present invention. The air-permeable molding 10 according to this embodiment includes a vent 11, a horizontal member 12, a vertical member 13, A member 14 and a rib 15 as shown in Fig.

The air-permeable molding 10 according to this embodiment can be manufactured by mixing one or more kinds of metals such as aluminum, wood (MDF, HDF) and plywood, wood, plastic and ceramic material. The material of the molding may be the same in the following other embodiments.

The air vent 11 may be formed by piercing the surface of the molding 10, and the air inside the ceiling and the indoor air may be communicated through the vent 11.

The vent hole 11 may be formed in a circular shape as shown in FIG. However, the shape of the vent hole 11 is not limited to this, and can be variously changed. For example, the vent hole 11 may be formed in a slit shape, an elliptical shape, a polygonal shape, etc. in addition to the circular shape. It is preferable that all of the plurality of ventilation holes 11 have the same shape, but two or more shapes may be combined.

It is preferable that the aperture ratio of the vent hole 11 satisfies the following formula.

[Equation 1]

10%? HA / MA 占 100? 30%

HA / MA x 100 represents the aperture ratio, HA (hole area) represents the total area of the vent holes, and MA (molding area) represents the total area of the molding. If the opening ratio of the vent hole 11 is too small, the effect of reducing the heavy impact sound may be insufficient. Conversely, if the opening ratio of the vent hole 11 is too large, the effect of reducing the heavy impact sound may be rather deteriorated.

The size of the vent hole 11 may be 0.5 to 5 mm, preferably 1 to 3 mm. The size of the vent hole 11 may mean a diameter in the case of a circular shape, and may mean an average diameter in a shape other than a circular shape. If the size of the vent hole 11 is too small, the effect of reducing the heavy impact sound may be insufficient. Conversely, if the vent hole 11 is too large, the effect of reducing the heavy impact sound may be rather deteriorated.

The spacing of the vent holes 11 may be 0.1 to 3 mm, preferably 0.5 to 2 mm. The spacing of the vent holes 11 is preferably constant as shown in FIG. 1, but may be independently varied. If the space between the vent holes 11 is too narrow, the effect of reducing the heavy impact sound may be lowered. On the contrary, if the space is too wide, the effect of reducing the heavy impact sound may be insufficient.

The vent holes 11 are preferably arranged in a line in a line as shown in FIG. 1, but they may be arranged in an irregular pattern without being aligned.

The position of the vent hole 11 is preferably such that the vent hole 11 is exposed to the outside after the ventilation molding 10 is installed between the ceiling finish material and the wall surface finish material. For example, as shown in FIG. 1, it is preferable that the vent hole 11 is disposed adjacent to the vertical member 13 so as to be exposed to the outside.

The above description of the vent hole 11 may be the same in the following other embodiments.

The horizontal member 12 is a long horizontal plate extending long along the ceiling finishing material, and a plurality of ventilation holes 11 are formed in the horizontal member 12.

The vertical member 13 is an elongated vertical plate extending long along the wall surface finish, extending upwardly from one end of the horizontal member 12 and in close contact with the wall surface finish. The vertical member 13 may be fixed to the wall surface finishing material through a fastening means such as a screw, a bolt, or a nail, and a guide groove may be formed in the vertical member 13.

The receiving member 14 serves to receive the ceiling finish for the combination of the ventilating molding 10 and the ceiling finish. As shown in FIG. 1, the housing member 14 is extended to the lower portion of the horizontal member 12, bent toward the ceiling finish material, Thereby forming a space into which the ceiling finishing material is inserted. Specifically, the housing member 14 is composed of two vertical plates and one horizontal plate, that is, the housing member 14 includes a long vertical plate extending downward, and a horizontal plate extending horizontally from the lower end of the vertical plate. And a short vertical plate extending upward from the end of the horizontal plate. Such a double bending structure not only forms a groove into which the ceiling finishing material is inserted, but also can stably support the ceiling finishing material in a state in which the ceiling finishing material is inserted.

The ribs 15 are formed on the rear surface of the housing member 14 to structurally reinforce the housing member 14. [ The rib 15 may be formed at an intermediate portion of the receiving member 14 as shown in FIG. 1 and may be formed at the end of the receiving member 14 as shown in the second drawing of FIG.

2 is a perspective view of an air-permeable molding for ceiling closure according to another embodiment of the present invention, wherein the air-permeable molding 20 according to this embodiment includes a vent hole 21, a horizontal member 22, a vertical member 23, And a member (24).

The configuration of the vent hole 21, the horizontal member 22, and the vertical member 23 is the same as or similar to that of the embodiment of FIG. 1, and thus a detailed description thereof will be omitted.

The receiving member 24 extends to the lower portion of the horizontal member 22 and is bent toward the ceiling finishing material to form a space into which the ceiling finishing material is inserted. Specifically, the housing member 24 is constituted by one vertical plate and one horizontal plate, that is, the housing member 24 includes a short vertical plate extending downward, and a long vertical plate extending horizontally from the lower end of the vertical plate. Flat plate. Compared with the embodiment of FIG. 1, the housing member 24 according to this embodiment is formed in the opposite direction, i.e., formed in the same direction as the vertical member 23. 1, the housing member 24 according to this embodiment is composed of two plates and has a single folding structure, and a long horizontal plate of the housing member 24 is connected to the horizontal member 22, Extending to the distal end of the horizontal member 22 to provide a general groove shape. Further, unlike the embodiment shown in Fig. 1, the air-permeable molding 20 according to this embodiment does not include ribs, and ribs may be formed as necessary.

FIG. 3 is a perspective view illustrating a coupling structure with various ceiling finishing breathable moldings and ceiling finishing according to the present invention, wherein the first drawing shows the breathable molding 20 according to the embodiment of FIG. 2, 1 shows a breathable molding 10 according to the embodiment of FIG. 1, and FIG. 4 shows a breathable molding according to another embodiment of the present invention.

As shown in FIG. 3, the air-permeable molding according to the fourth embodiment of the present invention may have a stepped shape in section and may include hollow hollow bodies, and a plurality of air holes may be formed in the hollow body.

FIG. 4 is a cross-sectional view of a ceiling structure according to an embodiment of the present invention. The ceiling structure 100 according to this embodiment includes a ventilated molding 10, a well top plate 101, a main top plate 102, 103, and is spaced apart from the lower portion of the ceiling slab 1.

The ventilating molding 10 serves to close the edges of the ceiling structure 100 by connecting the main ceiling panel 102 spaced from the ceiling slab 1 and the wall surface finishing material 110 installed on the wall body 2. As the air-permeable molding 10 used in this embodiment, the air-permeable molding 10 according to FIG. 1 is illustrated, but it is needless to say that the air-permeable molding according to FIGS.

The well ceiling plate (101) is installed at the lower central portion of the ceiling slab (1). The central part of the ceiling plate is depressed like a well and is called the well ceiling plate.

The main ceiling plate 102 is installed at the edge of the well ceiling plate 101 and is installed below the well ceiling plate 101 with a step difference in height direction from the well ceiling plate 101. The main ceiling plate 102 is preferably spaced by 180 mm or more from the lower surface of the ceiling slab 1, according to the fire-fighting and building-related ordinance. The well ceiling plate 101 is spaced from the lower surface of the ceiling slab 1 less than the main ceiling plate 102, that is, less than 180 mm from the lower surface of the ceiling slab 1, Or may be directly attached. This causes the main ceiling plate 102 to face the entire lower surface of the ceiling slab 1 in combination with the well ceiling plate 101. The main ceiling plate 102 may consist of only one plate with an opening formed therein, and a plurality of plates may be assembled to form an opening.

The well ceiling plate 101, the main ceiling plate 102, and the wall surface finish 110 may be, for example, gypsum boards. These are usually manufactured as boards of a unit standard, and can be installed by connecting a plurality of boards.

The step closing side wall 103 connects the well top plate 101 and the main top plate 102 and closes the gap between the top plate 101 and the main top plate 102. At this time, an air layer is formed between the ceiling slab 1 and the ceiling structure 100, and a duct of a sprinkler and a ventilation unit can be installed. The step closing side wall 103 can be made of a breathable material through which the air can be moved from the air layer formed between the ceiling slab 1 and the ceiling structure 100 through the stepped closed side wall 103 made of a breathable material to the room And conversely, it can move from the room to the air layer. Therefore, the air between the ceiling slab 1 and the ceiling structure 100 is also movable through the step-closing sidewall 103.

Generally, when an impact is applied to the ceiling slab 1, an air spring effect occurs in the air layer between the ceiling slab 1 and the ceiling structure. In the ceiling structure 100 of the present invention, since the air flows through the vent hole 11 and the step-closed side wall 103 of the air-permeable molding 10, the air spring effect by the air layer is reduced, The low frequency resonance phenomenon due to the air spring effect can be reduced between the ceiling structure 100 and the ceiling structure 100. Therefore, the air-permeable molding 10 and the step-closed side wall 103 can reduce the impact sound due to the impact applied to the ceiling slab 1 from being transmitted through the ceiling structure 100.

A filter 131 may be provided on the inner side surface of the stepped closed sidewall 103. The filter 131 functions to block foreign matter. It is preferable that the hole of the filter 131 is smaller than the hole of the stepped closing side wall 103. At this time, even the minute foreign matters which can not be blocked by using the step closing side wall 103 can be blocked by the filter 131.

Air can flow through the filter 131 and the step-closed side wall 103, but the foreign matter does not pass through the filter 131 because it has a larger particle size than air. Therefore, the foreign substances in the ceiling structure 100 according to the present invention (i.e., the air layer between the ceiling slab 1 and the ceiling structure 100) can not pass through the filter 131, The indoor air may be prevented from being contaminated by the foreign materials inside the ceiling structure 100. [

In addition, the step-closed sidewall 103 provides a recessed well shape from the ceiling structure 100 toward the ceiling slab 1 in combination with the well top plate 101. In addition, the stepped closed sidewall 103 is formed with holes that provide air permeability, and the holes may be arranged to have a specific shape. Because of this, the step-closed sidewall 103 is also used to provide the appearance of a beautiful ceiling structure 100.

The ceiling structure 100 according to the present invention may further include a plurality of main ceiling panel members 104, a main ceiling panel half board 105, a well ceiling panel 106, and a water ceiling panel half board 107 . They keep the well ceiling plate 101 and the main ceiling plate 102 away from the ceiling slab 1.

The main ceiling panel ladle 104 is installed downward from the bottom surface of the ceiling slab 1 so as to be spaced apart from the ceiling slab 1 from the main ceiling plate 102. The main ceiling panel bobbin 105 horizontally connects the main ceiling panel bobbin 104. At this time, the main ceiling plate 102 may be attached only to the lower part of the main ceiling panel ladle 104 or the main ceiling panel ladle 104 as shown in FIG. 4, It may be attached to both the lower portion of the half- That is, the main ceiling plate 102 is installed in the ceiling slab 1 by the combination of the main ceiling panel ladle 104 and the main ceiling panel ladle 105.

The louver 106 for the well ceiling plate is installed downward from the lower surface of the ceiling slab 1 so as to be spaced apart from the ceiling slab 1 so that the well ceiling plate 101 is spaced apart from the ceiling slab 1, short. The bottom plate 107 for the well ceiling plate horizontally connects the louver 106 for the well ceiling plate. At this time, the well ceiling plate 101 may be attached only to the lower part of the well 106 for the ceiling panel or the lower part of the well 110 for the ceiling panel, and the lower part of the lid 106 for the well ceiling panel and the lower part . That is, the well ceiling plate 101 is installed in the ceiling slab 1 by a combination of a ladle 106 for the well ceiling plate and a flatbed 107 for the well ceiling plate.

On the other hand, the well ceiling plate 101 may be attached to the ceiling slab 1 by attaching it to a well plate 107 for a ceiling slab 1 attached to the ceiling slab 1 without a tongue 106 for a well ceiling plate.

5 is a sectional view of a ceiling structure according to another embodiment of the present invention. The ceiling structure according to this embodiment includes a plurality of air-permeable moldings 10, a hanger bolt 121, a hanger 122, a carrying channel 123, An embroidery clip 124 and an emblem 125. The hanger bolt 121, the hanger 122, the carrying channel 123, the emblem clip 124, and the emblem 125 may all be provided in plural numbers.

FIG. 5 is a view showing the construction of a carrying channel ceiling using an embroider. In the case of constructing a ceiling using the carrying channel as described above, the air-permeable molding according to the present invention can be applied. This is because ceiling gypsum boards and wall gypsum boards must be spaced apart at regular intervals, and air in the ceiling can be ventilated by molding to reduce floor impact noise.

4, the ventilating molding 10 is connected to the main ceiling panel 102 spaced apart from the ceiling slab 1 and the wall surface finishing material 110 provided on the wall body 2 to finish the edges of the ceiling structure 100 . As the air-permeable molding 10 used in this embodiment, the air-permeable molding 10 according to FIG. 1 is illustrated, but it is needless to say that the air-permeable molding according to FIGS.

A hanger bolt 121 is installed downward from the ceiling slab 1 so as to be spaced apart from the lower surface of the ceiling slab 1 so as to be spaced apart from the main ceiling plate 102 and the well ceiling plate 101 . The hanger bolts 121 serve the same or similar functions as the lanes 104 and 106 of Fig.

The hanger 122 is installed under the hanger bolt 121 and engages with the lower end of the hanger bolt 121. The hanger 122 may have a space or groove for receiving the carrying channel 123. The hanger 122 and the hanger bolt 121 may be made of metal or the like.

A carrying channel 123 may be coupled to and supported by the hanger 122. The carrying channel 123 can be inserted into the receiving space of the hanger 122 or supported over the latching groove of the hanger 122. [ The carrying channel 123 may be made of metal or the like and may be a long frame having a substantially U-shaped cross section.

The M-bar 125 may be installed to be perpendicular to the carrying channel 123 below the carrying channel 123. The emblem 125 may be made of metal or the like and may be a long frame having a substantially M-shaped cross section. The carrying channel 123 and the emblem 125 serve the same or similar functions as the half jumpers 105 and 107 of FIG. The emblem 125 may have a rail structure slidably engageable with the emblem clip 124.

The M-bar clip 124 serves to fasten the emblem 125 to the carrying channel 123. For example, the upper portion of the emblem clip 124 may be formed in a latching structure capable of engaging with the carrying channel 123, and the lower portion of the emblem clip 124 may have a stepped structure .

In the following, an interlayer noise reduction experiment was carried out by improving the ceiling structure of the ceiling structure using the ventilation molding according to the present invention.

[Experimental Example]

1. Experimental conditions

First, the impact sound amplification phenomenon according to the size of the ceiling air layer was analyzed. First, the floor impact sound isolation performance was evaluated under the condition that no ceiling air layer was present and the ceiling air layer was installed at a thickness of 200 mm. The ceiling structure was made of a gypsum board with a thickness of 9.5 mm with a spacing of 200 mm using a timber pan and a semi-planet similar to Fig. Also, to prevent the air spring action of the ceiling air layer, the floor impact sound performance was evaluated after perforating the surface of the gypsum board.

Then, the lower layer ceiling method which can prevent air springs was proposed and the impact sound blocking performance was evaluated. The lower layer ceiling method proposed in this experiment focused on providing ventilation to the ceiling and ceiling moldings so that the air trapped inside the ceiling can communicate.

Also, in this experiment, a dry double bottom structure was applied instead of a floating floor structure to which a conventional cushioning material was applied at the bottom of the upper layer generation. The dry double bottom structure used in the experiment was constructed by joining the rubber supporting angle arranged at regular intervals with wooden joist lines, and a particle board (PB) having a thickness of 18 mm and a corrugated board were laid on the upper part. In order to satisfy the adiabatic performance, glass wool was applied to the lower part of the upper plate, and a heat sink was installed on the upper part of the upper plate. Even when the dry double bottom is installed on the upper layer, the air spring action of the lower layer ceiling always occurs regardless of the structure of the upper layer.

The measurement was carried out at the floor test of the KCC Central Research Laboratory. The unit room size was 5.0 m in width and 4.4 m in length, and consisted of 180 ㎜ slabs. Measurements were carried out in accordance with KS F 2810-1,2 to evaluate the floor impact sound isolation performance. Experiments were performed by setting the frequency analyzer to an octave band. The air pressure of the weight impact source was adjusted to 2.4 kgf / m 2, and then measured under the same air pressure conditions.

2. Experimental results

When the air layer of 200 ㎜ is installed, it is confirmed that the light impact sound is reduced by 3 dB, while the heavy impact sound is amplified by 6 dB. Since the lightweight impact sound is transmitted to the lower and upper generations through the air transmission rather than the structure transmission, it can be confirmed that when the gypsum board is installed, it is reduced by 2 to 3 dB in the entire frequency band. However, in the case of the heavy impact sound, the blocking performance is reduced by about 6 dB in the 63 Hz band. This is the same result as the above predicted result, because the first natural frequency shifts to the low frequency band due to the elastic action of the air layer. The results of the second measurement showed that the cause of the damage was more precise. As a result of re - measuring the hole with a diameter of 10 ㎜ and a gap of 200 ㎜ on the gypsum board, the blocking performance was improved by 5 dB again. Table 1 shows the floor impact sound measurement results.

Ceiling air layer Heavy impact sound Lightweight impact sound Ceiling Finish Material none 41 40 none 200 mm 47 37 9.5 mm gypsum board 200 mm 42 39 9.5 mm perforated gypsum board

3. Evaluation of barrier performance of lower layer ceiling construction

The basic direction of the method applied to the lower floor ceiling was developed in such a way as to prevent the low frequency resonance phenomenon caused by the air spring action. In other words, we focused on making an outlet to communicate the air formed in the ceiling to the bottom.

FIG. 6 shows the principle of reducing the interlayer noise of the air-permeable ceiling structure according to the present invention, and shows a structure of a well ceiling in which air can be communicated through the side. A perforated plate was installed on the side of the well ceiling to serve as an exit from which the trapped air could escape. In addition, the ventilating ceiling molding as shown in Fig. 3 is installed on the side portion to facilitate air communication. When the impact occurred near the midpoint of the upper floor, it played a role to reduce the impact sound in the passage of the well ceiling and to reduce the passage of the ventilation molding when the impact occurred at the bottom of the upper floor.

After the ceiling construction proposed above was applied to masonry in the floor test section, the evaluation of the abatement performance was carried out. First, in order to construct a ceiling similar to that shown in Fig. 4, after installing a lunar and a half-planter, a well ceiling was installed at the center, and a ventilating molding was installed at the side edge. Table 2 shows detailed specifications of the masonry construction of the installed well ceiling and molding.

division Detailed specifications Remarks Construction Area 4500 x 5000 mm KICT floor experiment Ceiling height 200 mm - Gap between bars 450 mm Tree structure Well ceiling area 2000 x 2000 mm Step 150 mm Perforated molding installation length 19 m AL molding

Table 3 compares the floor impact sound performance according to the installation of the well ceiling and shows the effect of the perforated well ceiling.

division Ceiling height
(mm) Upper layer
floor Impulsive sound per frequency (dB) 63 Hz 125 Hz 250 Hz 500 Hz Uninstalled 180 Double floors 83.0 70.6 52.5 40.4 Installation of well ceiling 79.4 70.6 51.6 38.5 Difference 3.6 0.0 0.9 1.9

As shown in Table 3, the effect of reducing the air spring effect generated in the ceiling layer in the case of a borehole type ceiling was reduced by about 3.6 dB at a low frequency impact sound of 63 Hz. Generally, it is very difficult to reduce low-frequency impact sound, and since it is rarely proven that the performance of the sound absorption material is considerably high, the reduction effect of the low-frequency impact sound as shown in Table 3 is remarkable.

Table 4 compares the performance of floor impact sound according to whether or not a ventilation molding is installed, and shows the effect of perforation molding. The perforated molding has an aperture ratio of 18%.

division Ceiling height
(mm) Upper layer
floor Impulsive sound per frequency (dB) Remarks 63 Hz 125 Hz 250 Hz 500 Hz Uninstalled 200 Double floors 83.4 63.3 50.5 37.6 - Perforated molding installation 81.9 60.6 50.0 38.0 Aperture ratio 18% Difference 1.5 2.7 0.5 -0.4

As shown in Table 4, the reduction effect was observed in three of the four low-frequency bands of the heavy impact sound measurement frequency, and a significant reduction effect was observed particularly at 63 Hz and 125 Hz. The principle of impact noise reduction is the same as that of the perforated well ceiling. Based on the above results, it is expected that impact sound reduction effect will be obtained when the minimum aperture ratio is 12% or more.

As a result of the measurement of the reduction performance of the floor impact sound, the heavy impact sound was reduced by 3 dB or more, and the reduction performance was such that the performance grade of the cushioning material installed in the upper structure could be raised by one grade .

Floor impact noise generated in apartment buildings, especially apartment buildings, is not simply a matter of intergenerational friction, but it has become a big issue because it has become a social issue. Especially, the apartment house which is currently being constructed in Korea is adopting a wall structure that is vulnerable to floor impact sound, so the solution is not easy. In addition to the structure of the apartments, there is also the difficulty that the performance evaluated in the laboratory can not be reproduced in the apartment because the characteristics of the slab intensity of each apartment and the impact sound are different according to the plan type. Therefore, this design is devised as a countermeasure to compensate the abatement performance of the cushioning material applied to the upper floor. When controlling the floor impact sound depending on the cushioning material of the upper floor, it is inevitable to use cushioning material having an excessive elastic modulus in order to satisfy the first grade of the regulation law. In this case, And it is difficult to secure a sense of walking due to the bigger problem. As a result of investigating the cushioning materials that have been developed and marketed so far, it is analyzed that the blocking performance that can be expected for the upper cushioning material is at the level of the third grade in the condition of satisfying the three factors of price competitiveness, workability and structural stability. However, the third grade of heavy impact sound is somewhat insufficient for the occupant to achieve a satisfactory blocking performance. Therefore, it is necessary to use a method that can reduce the impact sound from the ceiling or the wall other than the floor as in the present invention.

While the present invention has been described in connection with certain exemplary embodiments, it will be understood by those skilled in the art that various changes may be made without departing from the scope of the present invention.

1: ceiling slab
2: Wall (wall)
10, 20: Breathable molding
11, 21: Ventilation holes
12, 22: horizontal member
13, 23: vertical member
14, 24: housing member
15: rib
100: Ceiling structure
101: Well ceiling board
102: Main ceiling board
103: stepped closing side wall
104: Moon roof for main ceiling
105: Semi-plank for main ceiling board
106: ladder for wells
107: Bumpers for wells
110: Wall finish
121: Hanger Bolt
122: Hanger
123: Carrying channel
124: embro clip
125: embaras
131: Filter

Claims (9)

A well ceiling plate installed on a lower central portion of the ceiling slab;
A main ceiling plate installed at a rim of the well ceiling plate and provided at a lower portion of the well ceiling plate with a step in height direction with the well ceiling plate;
A step closing side wall connecting the well ceiling plate and the main ceiling plate to close between the well ceiling plate and the main ceiling plate; And
A ventilating molding installed to connect the main ceiling plate to the wall surface finishing material and having a plurality of ventilation holes,
Wherein the air permeable molding comprises: a horizontal member having the plurality of vent holes; A vertical member extending upward from one end of the horizontal member and being in contact with the wall surface finishing material and having a guide groove to which the fastening means for fixing the air permeable molding to the wall surface finishing material can be fastened; A receiving member that extends to a lower portion of the horizontal member, is bent toward the ceiling finishing material, and then upwardly bent to form a space in which the ceiling finishing material is inserted and supported by having a double-folded structure; And a rib formed on a rear surface of the receiving member.
delete delete The method according to claim 1,
Characterized in that the breathable molding satisfies the following formula:
[Equation 1]
10%? HA / MA 占 100? 30%
In this formula,
HA / MA x 100 represents the aperture ratio,
HA represents the total area of the vent holes,
MA represents the total area of the molding.
The method according to claim 1,
Wherein the main ceiling plate is spaced from the ceiling slab by 180 mm or more, the step closing side wall is made of a breathable material, and a filter for blocking foreign matter is installed on an inner side surface of the step closing side wall.
The method according to claim 1,
A plurality of main ceiling tiles installed to be spaced apart from each other from a lower surface of the ceiling slab so as to be spaced apart from the ceiling slab;
A plurality of wells for a ceiling panel suspended from the ceiling slab and spaced apart from each other so as to be spaced apart from the ceiling slab;
A plurality of main ceiling panel semi-planes horizontally connecting the plurality of main ceiling panel halves; And
Further comprising a plurality of wells for the well ceiling panel horizontally connecting the plurality of well ceiling panels.
The method according to claim 6,
Wherein the main ceiling plate is attached to a lower portion of the main ceiling plate half-
Wherein the well ceiling plate is attached to a lower portion of the bottom plate for a well ceiling plate.
The method according to claim 6,
Wherein the main ceiling plate is attached to a lower portion of the lattice for the main ceiling plate and a lower portion of the main ceiling plate for the ceiling plate,
Wherein the well ceiling plate is attached to a lower portion of the ladle for the well ceiling plate and to a lower portion of the ceiling plate for the well ceiling plate.
The method according to claim 1,
A plurality of hanger bolts spaced apart from each other on a lower surface of a ceiling slab so as to separate the main ceiling plate and the well ceiling plate from the ceiling slab;
A plurality of hangers provided under the plurality of hanger bolts;
A plurality of carrying channels coupled to and supported by the plurality of hanger members;
A plurality of embers installed below the plurality of carrying channels to be perpendicular to the carrying channel; And
Further comprising a plurality of embroidering clips for engaging the embroidering with the plurality of carrying channels.

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