JP2014012974A - Multiple ceiling structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multiple ceiling structure having high earthquake resistance and sound insulating properties.SOLUTION: A multiple ceiling structure 1 comprises: an upper stage ceiling 2; a lower stage ceiling 3 that is provided at a lower side of the upper stage ceiling 2; a vertical fitting plate 5 that is fixed to the upper stage ceiling 2; a brace 6 that is fixed to the vertical fitting plate 5 and the lower stage ceiling 3; and a suspending bolt 8 that suspends the upper stage ceiling 2 and the lower stage ceiling 3. A lower part of the vertical fitting plate 5 protrudes toward a lower side of the upper stage ceiling 2, and an upper part of the brace 6 is fixed to the lower part of the vertical fitting plate 5.

Description

  The present invention relates to a multiple ceiling structure.

In some cases, the ceiling has a multiple structure (multiple ceiling structure) for the purpose of enhancing sound insulation.
For example, Patent Document 1 discloses a double ceiling structure including an upper ceiling suspended by suspension bolts and a lower ceiling frame suspended via suspension bolts suspended from the upper ceiling. .

Moreover, in order to ensure the earthquake resistance of a ceiling structure, a brace may be arrange | positioned (for example, refer patent document 2). In particular, when the ceiling has a multi-layer structure, the weight is increased, and since the clearance is required to be reduced due to sound insulation, further earthquake resistance is required.
The brace is generally disposed between the upper end of the suspension bolt or the upper structure and the base material (field edge, field edge receiving material, etc.) or ceiling plate material suspended by the suspension bolt. is there.

JP-A-8-93115 JP 2011-190678 A

In a multi-ceiling structure formed for the purpose of improving sound insulation, when a brace is placed between the upper and lower ceilings, the brace diagonally penetrates the ceiling plate material that is the sound insulating material provided on the upper ceiling. Therefore, it is necessary to form an opening in the ceiling board material.
If the opening formed in the ceiling plate material is large, the sound insulation of the multiple ceiling structure will be reduced.

  An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to propose a multiple ceiling structure having high earthquake resistance and sound insulation.

  In order to solve the above problems, a multiple ceiling structure according to the present invention includes an upper ceiling, a lower ceiling disposed below the upper ceiling, a vertical mounting plate fixed to the upper ceiling, and a vertical mounting plate. And a brace fixed to the lower ceiling, wherein the lower portion of the vertical mounting plate protrudes below the upper ceiling, and the upper portion of the brace is fixed to the lower portion of the vertical mounting plate. It is characterized by that.

According to such a multiple ceiling structure, since the brace is fixed to the upper ceiling via the vertical mounting plate, the opening formed in the upper ceiling can be significantly reduced compared to the case where the brace is directly fixed. .
Therefore, the sound insulation of the multiple ceiling structure can be enhanced. Moreover, since the brace is arrange | positioned so that force transmission is possible between an upper stage ceiling and a lower stage ceiling, it is excellent also in earthquake resistance.

  The upper ceiling includes an upper ceiling plate member, an upper step edge holding the upper step ceiling plate member, and an upper step edge receiving member holding the upper step edge, and an upper portion of the vertical mounting plate is the upper step The vertical mounting plate passes through the ceiling plate material and protrudes above the upper stage edge receiving material, and the vertical mounting plate is connected to the upper stage field via a vertical mounting plate support material extending from the upper part of the vertical mounting plate to the upper stage edge receiving material. It may be fixed to the edge receiving material.

  According to such a multiple ceiling structure, it is possible to suppress the rotation of the vertical mounting plate when an external force is applied.

  Further, the upper ceiling is installed on the upper surface of the upper stage edge plate material, the upper stage edge holding the upper stage ceiling plate material, the upper stage edge receiving material holding the upper stage edge, and the upper stage edge receiving material. An upper reinforcing cross member, and an upper portion of the vertical mounting plate passes through the upper ceiling plate member and projects above the upper reinforcing cross member, and the upper reinforcing member extends from the upper portion of the vertical mounting plate. The vertical mounting plate may be fixed to the upper reinforcing horizontal member through a vertical mounting plate support member that reaches the horizontal member.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to form a multiple ceiling structure with high earthquake resistance and sound insulation.

It is sectional drawing which shows the multiple ceiling structure which concerns on 1st embodiment. It is an expanded sectional view which shows a part of multiple ceiling structure of FIG. It is sectional drawing which shows the multiple ceiling structure which concerns on 2nd embodiment.

This embodiment demonstrates the case where the ceiling structure is made into the multiple ceiling 1 about the building where the sound-insulating property from the noise outside a building and the sound-insulating property for improving an internal acoustic effect are requested | required.
As shown in FIG. 1, the multiple ceiling 1 in the first embodiment is a triple ceiling (multiple ceiling 1) including an upper stage ceiling 2, a first lower stage ceiling 3, and a second lower stage ceiling 4. is there. The number of steps of the multiple ceiling 1 is not limited as long as it is two or more.

A vertical mounting plate 5 is fixed to each of the upper ceiling 2 and the first lower ceiling 3.
Braces 6 are disposed in the space between the upper ceiling 2 and the first lower ceiling 3 and in the space between the first lower ceiling 3 and the second lower ceiling 4.

  The upper ceiling 2 is a so-called suspended ceiling that is disposed below the upper structure 7 made of a ceiling slab, a beam, and the like, and is suspended by suspension bolts 8. Although this embodiment demonstrates the case where the upper stage ceiling 2 is horizontal, the upper stage ceiling 2 may be inclined.

As shown in FIG. 2, the upper ceiling 2 of the present embodiment includes an upper ceiling board material 21, an upper field edge 22, and an upper field edge receiving material 23.
The upper ceiling plate material 21 is a plate material that covers the lower surface of the upper ceiling 2. In addition, although the material of the upper stage ceiling board material 21 is not limited, the thing lightweight and excellent in the sound-insulation property is desirable.

  The upper stage edge 22 is a rod-like member that holds the upper stage ceiling board material 21, and is fixed to the upper surface of the upper stage ceiling board material 21.

The upper stage edge 22 of the present embodiment is a steel base material defined in JIS A 6517 building steel base material (wall / ceiling).
In the present embodiment, the upper stage edge 22 and the upper stage ceiling plate material 21 are fixed in a state where the web of the upper stage edge 22 is in contact with the upper surface of the upper stage ceiling plate material 21, and a pair of flanges are engaged with the mounting bracket 24. It is stopped.

  In addition, the shape material which comprises the upper stage edge 22 is not limited, For example, a cross-section C-shaped channel material, L-shaped steel, etc. may be sufficient. Moreover, the material of the upper stage edge 22 is not limited, for example, an aluminum alloy, stainless steel, etc. may be sufficient. Moreover, the direction of the upper stage edge 22 is not limited, for example, you may fix one flange to the upper stage ceiling board material 21. FIG.

  The upper stage edge receiving member 23 is a rod-like member that holds the upper stage edge 22 and is fixed to the upper surface of the upper stage edge 22 via a mounting bracket 24. In addition, the fixing method of the upper stage edge 22 and the upper stage edge receiving material 23 is not limited, For example, you may fix directly with a bis | screw etc.

The upper stage edge receiving material 23 is suspended by the suspension bolt 8. Note that the member that supports the upper field edge receiving member 23 is not limited to the suspension bolt 8.
Further, the upper edge receiving member 23 is fixed to the beam 71 by welding or by braces 6 disposed between the upper structure 7 and the upper ceiling 2.

  The upper stage edge receiving material 23 is a steel base material defined in JIS A 6517 building steel base material (wall / ceiling). In this embodiment, although the upper stage edge receiving material 23 is arrange | positioned in the direction where a pair of flange is arrange | positioned up and down, the direction of the upper stage edge receiving material 23 is not limited.

  Moreover, the profile which comprises the upper stage edge receiving material 23 is not limited, For example, a cross-section C-shaped channel material, L-shaped steel, etc. may be sufficient. Moreover, the material of the upper stage edge receiving material 23 is not limited, for example, aluminum alloy, stainless steel, etc. may be sufficient.

  The upper stage edge receiving material 23 is arranged in a direction intersecting with the upper stage edge 22. That is, the upper ceiling 2 has a lattice-like ceiling base formed by the upper field edge 22 and the upper field edge receiving material 23.

  A vertical mounting plate 5 fixed to the upper ceiling 2 (hereinafter, also referred to as “upper vertical mounting plate 51”) is a plate material, and penetrates the upper ceiling plate material 21 to the upper stage edge receiving member 23. It is fixed.

The lower portion 52 of the upper vertical mounting plate 51 protrudes below the upper ceiling plate member 21, and the upper portion 53 of the upper vertical mounting plate 51 protrudes above the upper step edge receiving member 23.
In the present embodiment, the upper vertical mounting plate 51 and the upper field edge receiving member 23 are directly fixed using screws or the like in the middle portion of the upper vertical mounting plate 51. The edge receiving member 23 is not necessarily fixed directly.

A brace 6 (hereinafter sometimes referred to as “upper brace 61”) disposed between the upper ceiling 2 and the first lower ceiling 3 is fixed to the lower portion 52 of the upper vertical mounting plate 51.
The upper brace 61 is arranged so that force can be transmitted between the upper ceiling 2 and the first lower ceiling 3.

  As shown in FIG. 1, the lower part of the upper brace 61 of the present embodiment is fixed to a first lower stage edge receiving member 33 of the first lower stage ceiling 3 described later. That is, the upper part of the brace 6 is fixed to the upper stage edge receiving member 23 via the upper stage vertical mounting plate 51, and the lower part is directly fixed to the first lower stage edge receiving member 33. In this way, force can be transmitted between the upper ceiling 2 and the first lower ceiling 3 by the brace 6. By transmitting this force, a compressive force is applied to the suspension bolt 8a near the lower end of the brace 6. Therefore, a pipe material (square pipe, round pipe, etc.) 8b as a compression column is provided, and the suspension bolt 8a is passed through the pipe material 8b to prevent buckling of the suspension bolt 8a.

  The brace 6 is made of a steel section having a U-shaped cross section (so-called lightweight grooved steel) having a web and a pair of flanges. In addition, the shape material which comprises the brace 6 is not limited, For example, the field edge receiving material prescribed | regulated to JISA6517 may be diverted, or the channel material of a C-shaped cross section, L-shaped steel, etc. There may be. The material of the brace 6 is not limited, and may be, for example, an aluminum alloy or stainless steel.

The upper part of the brace 6 is fixed to the upper vertical mounting plate 51 with the web in contact with the upper vertical mounting plate 51. The first lower-stage edge receiving member 33 and the brace 6 are fixed in a state where the webs are back to back.
In addition, the fixing method of the brace 6 and the upper stage vertical attachment plate 51 or the first lower stage edge receiving material 33 is not limited.

As shown in FIG. 2, the upper part of the vertical mounting plate support member 9 (hereinafter, also referred to as “upper vertical mounting plate support member 91”) is fixed to the upper part 53 of the upper vertical mounting plate 51.
The upper vertical mounting plate support member 91 is a rod-shaped member extending from the upper portion of the upper vertical mounting plate 51 to the upper step edge receiving member 23, and the lower portion of the upper step vertical mounting plate supporting member 91 is fixed to the upper step edge receiving member 23. ing. The vertical mounting plate support member 9 is inclined in the same direction as the brace 6 (in a direction that becomes lower toward the center of the drawing in FIG. 1). The brace 6 and the vertical mounting plate support member 9 may be parallel, may not be parallel, or may be inclined in opposite directions.

  As shown in FIG. 1, the first lower ceiling 3 is arranged below the upper ceiling 2 (between the upper ceiling 2 and the second lower ceiling 4), and the suspension bolt 8 penetrating the upper ceiling 2. It is suspended by. In the present embodiment, the case where the first lower ceiling 3 is horizontal will be described, but the first lower ceiling 3 may be inclined. The first lower ceiling 3 is a “lower ceiling” in relation to the upper ceiling 2, but is an “upper ceiling” in relation to the second lower ceiling 4.

The first lower ceiling 3 of the present embodiment includes a first lower ceiling plate 31, a first lower field edge 32, and a first lower field edge receiving material 33.
The configurations of the first lower-stage ceiling board material 31, the first lower-stage field edge 32, and the first lower-stage field edge receiving material 33 are the same as those of the upper stage ceiling board material 21, the upper-stage field edge 22 and the upper-stage field edge receiving material 23, respectively. Detailed description will be omitted.

  The vertical mounting plate 5 (hereinafter sometimes referred to as “lower vertical mounting plate 54”) fixed to the first lower ceiling 3 is a plate material, It is fixed to the lower step edge receiving material 33.

The lower portion of the lower vertical mounting plate 54 protrudes below the first lower ceiling plate material 31, and the upper portion of the lower vertical mounting plate 54 protrudes above the first lower field edge receiving member 33.
In the present embodiment, the lower vertical mounting plate 54 and the first lower step edge receiving member 33 are directly fixed at the middle portion of the lower vertical mounting plate 54. The edge receiving member 33 is not necessarily fixed directly.

A brace 6 (hereinafter sometimes referred to as “lower brace 62”) disposed between the first lower ceiling 3 and the second lower ceiling 4 is fixed to the lower portion of the lower vertical mounting plate 54. .
The lower brace 62 is disposed so that force can be transmitted between the first lower ceiling 3 and the second lower ceiling 4.

The lower part of the lower brace 62 of the present embodiment is fixed to a second lower field edge receiving member 43 of the second lower ceiling 4 described later. That is, the lower brace 62 has an upper portion fixed to the first lower step edge receiving member 33 via the lower step vertical mounting plate 54 and a lower portion directly fixed to the second lower step edge receiving member 43. Therefore, the force is transmitted between the first lower ceiling 3 and the second lower ceiling 4. By transmitting this force, a compressive force is applied to the suspension bolt 8a near the lower end of the brace 6. Therefore, a pipe material (square pipe, round pipe, etc.) 8b as a compression column is provided, and the suspension bolt 8a is passed through the pipe material 8b to prevent buckling of the suspension bolt 8a.
Since the other configuration of the lower brace 62 is the same as that of the upper brace 61, detailed description thereof is omitted.

The upper part of the vertical mounting plate support member 9 (hereinafter referred to as “lower vertical mounting plate support member 92”) is fixed to the upper portion of the lower vertical mounting plate 54.
The lower vertical mounting plate support member 92 is a rod-shaped member that extends from the upper portion of the lower vertical mounting plate 54 to the first lower step edge receiving member 33. The lower portion of the lower vertical mounting plate support member 92 is fixed to the first lower step edge receiving member 33.

  The second lower ceiling 4 is disposed below the first lower ceiling 3 and is suspended by suspension bolts 8 penetrating the first lower ceiling 3. In the present embodiment, the case where the second lower ceiling 4 is horizontal will be described, but the second lower ceiling 4 may be inclined.

The second lower stage ceiling 4 of the present embodiment includes a second lower stage ceiling plate material 41, a second lower stage field edge 42, and a second lower stage field edge receiving material 43.
The configurations of the second lower-stage ceiling board material 41, the second lower-stage field edge 42, and the second lower-stage field edge receiving material 43 are the same as the upper-stage ceiling board material 21, the upper-stage field edge 22 and the upper-stage field edge receiving material 23, respectively. Description is omitted.

As described above, according to the multiple ceiling structure 1 of the present embodiment, since the plurality of ceilings 2, 3, and 4 are provided, a ceiling structure excellent in sound insulation and sound insulation can be configured.
Further, since the brace 6 is fixed to the upper ceiling 2 (or the first lower ceiling 3) via the vertical mounting plate 5, the upper ceiling board material 21 (or the first lower ceiling 21) is compared with the case where the brace 6 is directly fixed. The opening formed in the stepped ceiling 31) can be greatly reduced.

That is, since the opening only needs to have a cross-sectional integral of the plate-like vertical mounting plate 5, the opening area can be reduced as compared with the case where the brace 6 made of the shape material penetrates obliquely.
Thus, the sound insulation of the multiple ceiling structure 1 can be improved by reducing the opening.

  Since the stress transmitted from the brace 6 is transmitted to the upper stage edge receiving member 23 (or the first lower stage edge receiving member 33) via the vertical mounting plate 5, the multiple ceiling structure 1 having excellent earthquake resistance is obtained. It is formed.

Further, since the upper portion of the vertical mounting plate 5 is fixed to the upper stage edge receiving member 23 and the first lower stage edge receiving member 33 via the vertical attachment plate supporting member 9, the vertical attachment plate 5 is rotated by the force received from the brace 6. It is suppressed.
Therefore, since the burden on the joint portion between the vertical mounting plate 5 and the field edge receiving members 23, 33 can be reduced, the cross-sectional dimensions of the vertical mounting plate 5 and the field edge receiving materials 23, 33 are minimized. Can do.

  Further, since the force transmission performance between the upper ceiling 2 and the first lower ceiling 3 and between the first lower ceiling 3 and the second lower ceiling 4 is excellent, the multiplex having excellent earthquake resistance is provided. A ceiling structure 1 is formed.

  The multiple ceiling 1 according to the second embodiment assumes the orthogonal direction of the first embodiment, and as shown in FIG. 3, the upper ceiling 2, the first lower ceiling 3, and the second lower ceiling 4 are These are different from the multiple ceiling 1 of the first embodiment in that they include reinforcing cross members 25, 35, 45 installed on the upper surfaces of the field edge receiving members 23, 33, 43, respectively.

As shown in FIG. 3, the upper ceiling 2 of the present embodiment includes an upper ceiling plate member 21, an upper field edge 22, an upper field edge receiving material 23, and an upper reinforcement horizontal member 25.
Since the configurations of the upper ceiling board material 21, the upper field edge 22 and the upper field edge receiving material 23 are the same as those shown in the first embodiment, detailed description thereof is omitted.

  The upper reinforcing cross member 25 is a rod-like member fixed to the upper surface of the upper step edge receiving member 23 via a mounting bracket (not shown). The upper reinforcing cross member 25 is arranged in a direction intersecting with the upper step edge receiving member 23. In addition, the fixing method of the upper stage edge receiving material 23 and the upper stage reinforcing cross member 25 is not limited, and may be directly fixed by, for example, screws.

  The upper reinforcing cross member 25 is made of a steel cross section having a U-shaped cross section (so-called lightweight channel steel) provided with a web and a pair of flanges. The shape of the upper reinforcing cross member 25 is not limited. For example, a field receiving material defined in JIS A 6517 may be used, or a channel material having a C-shaped cross section may be used. L-shaped steel or the like may be used. Further, the material of the upper reinforcing cross member 25 is not limited, and may be, for example, an aluminum alloy or stainless steel.

In the present embodiment, the upper reinforcing cross member 25 is arranged in such a direction that the pair of flanges are vertically positioned. However, the direction of the upper reinforcing cross member 25 is not limited. 23 may be provided on the lower side so as to be in contact with 23.
The upper reinforcing cross member 25 is fixed to the beam 72 by welding or braces 6 disposed between the upper structure 7 and the upper ceiling 2.

  The vertical mounting plate 5 (hereinafter sometimes referred to as “upper vertical mounting plate 51”) fixed to the upper ceiling 2 is a plate material, and penetrates the upper ceiling plate material 21 to the upper reinforcing horizontal member 25. It is fixed.

The lower portion of the upper vertical mounting plate 51 protrudes below the upper ceiling plate member 21, and the upper portion of the upper vertical mounting plate 51 protrudes above the upper reinforcing cross member 25.
In the present embodiment, the upper vertical mounting plate 51 and the upper reinforcing horizontal member 25 are directly fixed at the middle portion of the upper vertical mounting plate 51. However, the upper vertical mounting plate 51 and the upper reinforcing horizontal member 25 are not necessarily provided. There is no need to fix directly.

A brace 6 (upper brace 61) disposed between the upper ceiling 2 and the first lower ceiling 3 is fixed to the lower portion of the upper vertical mounting plate 51.
The upper brace 61 is arranged so that force can be transmitted between the upper ceiling 2 and the first lower ceiling 3. The brace 6 of this embodiment is disposed in a direction intersecting with the field edge receiving material (upper field edge receiving material 23 and the like).

  As shown in FIG. 1, the lower portion of the upper brace 61 is fixed to a first lower reinforcing reinforcing member 35 described later. That is, the upper brace 61 has its upper part fixed to the upper reinforcing horizontal member 25 via the upper vertical mounting plate 51 and its lower part fixed directly to the first lower reinforcing horizontal member 35. Thus, it is arranged so that force can be transmitted between the upper ceiling 2 and the first lower ceiling 3. By transmitting this force, a compressive force is applied to the suspension bolt 8a near the lower end of the brace 6. Therefore, a pipe material (square pipe, round pipe, etc.) 8b as a compression column is provided, and the suspension bolt 8a is passed through the pipe material 8b to prevent buckling of the suspension bolt 8a.

  Since the other details of the upper brace 61 are the same as the contents shown in the first embodiment, the detailed description is omitted.

The upper portion 53 of the upper vertical mounting plate 51 is fixed with the upper portion of the vertical mounting plate support member 9 (hereinafter referred to as “upper vertical mounting plate support member 91”).
The upper vertical mounting plate support member 91 is a rod-shaped member extending from the upper portion of the upper vertical mounting plate 51 to the upper reinforcing cross member 25, and the lower portion of the upper vertical mounting plate support member 91 is fixed to the upper reinforcing cross member 25. ing.

The first lower stage ceiling 3 of the present embodiment includes a first lower stage ceiling plate material 31, a first lower stage field edge 32, a first lower stage field edge receiving material 33, and a first lower stage reinforcing cross member 35. And.
The configurations of the first lower-stage ceiling board material 31, the first lower-stage field edge 32, the first lower-stage field edge receiving material 33, and the first lower-stage reinforcing cross member 35 are the upper-stage ceiling board material 21, the upper-stage field edge 22, Since it is the same as the upper-stage edge receiving member 23 and the upper-stage reinforcing cross member 25, detailed description is omitted.

  The vertical mounting plate 5 (hereinafter sometimes referred to as “lower vertical mounting plate 54”) fixed to the first lower ceiling 3 is a plate material, It is fixed to the lower reinforcing member 35.

A lower portion of the lower vertical mounting plate 54 protrudes below the first lower ceiling plate member 31, and an upper portion of the lower vertical mounting plate 54 protrudes above the first lower reinforcing cross member 35.
In the present embodiment, the lower vertical mounting plate 54 and the first lower reinforcing member 35 are directly fixed at the intermediate portion of the lower vertical mounting plate 54, but the lower vertical mounting plate 54 and the first lower reinforcing member are fixed. The cross member 35 does not necessarily need to be fixed directly.

A brace 6 (lower brace 62) disposed between the first lower ceiling 3 and the second lower ceiling 4 is fixed to the lower portion of the lower vertical mounting plate 54.
The lower brace 62 is disposed so that force can be transmitted between the first lower ceiling 3 and the second lower ceiling 4.

The lower part of the lower brace 62 is fixed to the second lower reinforcing cross member 45. That is, the upper part of the brace 6 is fixed to the first lower reinforcing member 35 via the lower vertical mounting plate 54, and the lower part is directly fixed to the second lower reinforcing member 45. Thus, the first lower stage ceiling 3 and the second lower stage ceiling 4 are disposed so as to be able to transmit force. By transmitting this force, a compressive force is applied to the suspension bolt 8a near the lower end of the brace 6. Therefore, a pipe material (square pipe, round pipe, etc.) 8b as a compression column is provided, and the suspension bolt 8a is passed through the pipe material 8b to prevent buckling of the suspension bolt 8a.
Since the other configuration of the lower brace 62 is the same as that of the upper brace 61, detailed description thereof is omitted.

The upper part of the vertical mounting plate support member 9 (hereinafter referred to as “lower vertical mounting plate support member 92”) is fixed to the upper portion of the lower vertical mounting plate 54.
The lower vertical mounting plate support member 92 is a rod-shaped member extending from the upper portion of the lower vertical mounting plate 54 to the first lower reinforcing cross member 35. A lower portion of the lower vertical mounting plate support member 92 is fixed to the first lower reinforcing cross member 35.

  The second lower ceiling 4 is disposed below the first lower ceiling 3 and is suspended by suspension bolts 8 penetrating the first lower ceiling 3. In the present embodiment, the case where the second lower ceiling 4 is horizontal will be described, but the second lower ceiling 4 may be inclined.

The second lower stage ceiling 4 of the present embodiment includes a second lower stage ceiling plate material 41, a second lower stage field edge 42, a second lower stage field edge receiving material 43, and a second lower stage reinforcing horizontal member 45. .
The configurations of the second lower-stage ceiling board material 41, the second lower-stage field edge 42, the second lower-stage field edge receiving material 43, and the second lower-stage reinforcing cross member 45 are respectively the upper-stage ceiling board material 21, the upper-stage field edge 22, and the upper-stage field edge receiver. Since it is the same as the material 23 and the upper reinforcing cross member 25, a detailed description thereof will be omitted.

  According to the multiple ceiling structure 1 of the second embodiment, the same effect as the multiple ceiling structure 1 shown in the first embodiment is obtained even in the ceiling structure in which the field edge receiving material and the brace intersect. be able to.

  The embodiment according to the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and the above-described components can be appropriately changed without departing from the spirit of the present invention.

In the first embodiment, the vertical mounting plate is fixed to a field edge receiving material (upper field edge receiving material or first lower field edge receiving material) at the middle portion of the vertical mounting plate, and vertically mounted via a vertical mounting plate support material. Although the case where the plate is fixed to the field edge receiving material has been described, the vertical mounting plate and the field edge receiving material may be fixed by only one of them.
Similarly, the fixing method between the vertical mounting plate and the reinforcing cross member (the upper reinforcing cross member or the first lower reinforcing cross member) in the second embodiment is not limited.

  When the vertical mounting plate is directly fixed to the field receiving member or the reinforcing cross member and the vertical mounting plate supporting member is omitted, the upper portion of the vertical mounting plate is not necessarily the upper part of the field receiving member or the reinforcing horizontal member. There is no need to protrude upward from the top surface.

What is necessary is just to arrange | position the pipe material as a compression pillar as needed.
Furthermore, for the purpose of further improving the sound insulation performance, a configuration may be adopted in which vibration is suppressed by attaching a vibration damping sheet to a suspension bolt or a brace or applying a vibration damping paint.

DESCRIPTION OF SYMBOLS 1 Multiple ceiling structure 2 Upper stage ceiling 21 Upper stage ceiling board material 22 Upper stage edge 23 Upper stage edge receiving material 3 First lower stage ceiling 4 Second lower stage ceiling 5 Vertical installation board 6 Brace 7 Upper structure 8 Suspension bolt 9 Vertical installation board support Material

Claims (3)

The upper ceiling,
A lower ceiling disposed below the upper ceiling;
A vertical mounting plate fixed to the upper ceiling;
A multiple ceiling structure comprising the vertical mounting plate and a brace fixed to the lower ceiling,
The multi-ceiling structure according to claim 1, wherein a lower portion of the vertical mounting plate protrudes below the upper ceiling, and an upper portion of the brace is fixed to a lower portion of the vertical mounting plate. The upper stage ceiling includes an upper stage ceiling plate, an upper stage edge holding the upper stage ceiling board material, and an upper stage edge receiving material holding the upper stage edge,
The upper portion of the vertical mounting plate penetrates the upper ceiling plate material and protrudes above the upper step edge receiving material,
The said vertical attachment board is being fixed to the said upper stage edge receiving material via the vertical attachment board support material from the upper part of the said vertical attachment board to the said upper stage edge receiving material. Multiple ceiling structure. The upper stage ceiling is provided with an upper stage board material, an upper stage edge holding the upper stage ceiling board material, an upper stage edge receiving material holding the upper stage edge, and an upper stage reinforcement installed on the upper surface of the upper stage edge receiving material A crosspiece for use,
The upper part of the vertical mounting plate protrudes above the upper reinforcing cross member through the upper ceiling plate material,
2. The vertical mounting plate is fixed to the upper reinforcing cross member through a vertical mounting plate support member that extends from an upper portion of the vertical mounting plate to the upper reinforcing cross member. Multiple ceiling structure.

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