JP2007239441A - Earthquake-resistant construction of hung ceiling - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the earthquake-resistant structure of a hung ceiling capable of mounting a brace as an earthquake-resistant reinforcing member at a desired place regardless of the place of a hanging member and capable of effectively suppressing the shakings of a ceiling in the case of an earthquake. <P>SOLUTION: In the hung ceiling, ceiling battens 13 are joined at the upper end sections of cradlings 11a and 11b for the ceiling 10 in the crossed direction, and the hanging members 15 connecting upper end sections to an upper structure 16 are connected, hung down and supported to the cradling receivers. In the hung ceiling, first V-shaped braces 19 as pairs by two materials of compression members and tension members fixing lower end sections to the cradlings 11a and upper end sections to the upper structure 16 are mounted in the extending direction of the cradlings. In the hung ceiling, crossed cradlings 22 unified with a ceiling panel in the direction crossed with the cradlings are fitted at desired places among the cradlings. In the hung ceiling, second V-shaped braces 25 as pairs by two materials of the compression members and the tension members fixing the lower end sections to the crossed cradlings 22 while fixings the upper end sections to the upper structure 16 are mounted in the direction crossed with the extending direction of the cradlings. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a seismic structure for a suspended ceiling that is used as a ceiling of a general office or the like and is suspended and supported from an upper structure via a suspension member.

  Conventionally, as this type of suspended ceiling, as shown in FIG. 7, a plurality of field edges 1 made of channel steel having a C-shaped cross section are arranged in parallel to each other, and a ceiling panel is formed on the lower surface of these field edges 1. 2 is formed, and an integrated ceiling 3 is formed. A plurality of field receivers 4 are arranged in parallel to each other in a direction orthogonal to the field edge 1 and joined to the field edge 1 on the ceiling 3. At the same time, a pendulum type suspension in which the ceiling 3 is suspended and supported by connecting the lower end portion 5b of the suspension bolt 5 having the upper end portion 5a connected to the upper structure 6 such as a slab on the upper floor to the field receivers 4. Suspended ceiling with structure is known.

  By the way, since the suspended length from the upper structure 6 to the ceiling 3 becomes large compared with a general ceiling structure, it is necessary to take some seismic measures.

  Therefore, for example, in Patent Document 1 below, a field receiver 4 that is suspended from the upper structure 6 by a suspension bolt 5 and arranged in parallel at a certain interval, and a certain distance in a direction perpendicular to the field receiver 4. There has been proposed a suspended ceiling in which a substantially lattice-like ceiling base is formed with the field edge 1 disposed with a gap and a reinforcing brace 7 is attached between the suspension bolt 5 and the field edge receiver 4. In the suspended ceiling, a cutout is provided at one end of the reinforcing brace 7, and the cutout is locked to the screw of the suspension bolt 5 and a cutout is provided at the other end. A structure is employed in which the notch is locked to the edge receiver 4 and a fixing bracket is fitted to the other end and the edge receiver 4 and a bolt is screwed in.

  By the way, in the conventional earthquake-resistant structure of the suspended ceiling, although it is possible to resist the horizontal force acting on the ceiling by the reinforcing brace 7 at the time of a small and medium earthquake, the reinforcing brace 7 is connected to the suspension bolt 5 and the field. Since it is provided between the edge holder 4 and the suspension bolt 5 and the ceiling itself in a large earthquake, there is a problem that a desired earthquake resistance effect cannot be obtained.

In addition, since the attachment position of the reinforcing member 7 is limited to the place where the suspension bolt 5 and the field edge receiver 4 are disposed, there is a problem that it is difficult to provide the reinforcement member 7 at a desired position.
In addition, the joint portion of the end portion of the reinforcing brace 7 and the suspension bolt 5 or the field edge receiver 4 or the upper end portion 5a of the suspension bolt 5 may be detached or the field edge receiver due to a large displacement movement in the suspension bolt 5 or the ceiling. The connection between the joint 4 and the field edge 1 is broken, and the ceiling shakes like a pendulum, so that it collides with a surrounding wall surface and the like, and the ceiling falls and causes great damage. There was also a fear.
JP-A-6-346547

  The present invention has been made in view of such circumstances, and a brace serving as an earthquake-proof reinforcing member can be provided at a desired position regardless of the position of the suspension member, and the upper structure and the ceiling panel are attached to the brace. It is an object of the present invention to provide a seismic structure for a suspended ceiling that can effectively suppress the swing width of the ceiling at the time of an earthquake to a permissible value or less by interposing it directly between the field edge. .

  In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that the upper edge of the ceiling of the ceiling in which a ceiling panel is attached to the lower surface of a plurality of field edges arranged in parallel, A plurality of field receivers are joined in the intersecting direction, and the ceiling is connected to the field receiver by connecting the lower end of a suspension member whose upper end is connected to the upper structure directly or via a connecting plate. In the suspended ceiling supported by suspension, in the extending direction of the field edge, a compression material and a tension material whose lower end portion is fixed to the field edge directly or via a connecting plate and whose upper end portion is fixed to the upper structure. A first V-shaped brace that is paired with two materials, and a cross field edge integrated with the ceiling panel in a direction intersecting the field edge at a desired position between the field edges, In the direction intersecting the extending direction of the field edge, the lower edge is the cross field A second V-shaped brace is provided that is paired with two members of a compression member and a tension member that are fixed directly or via a connecting plate and whose upper end is fixed to the superstructure. It is.

  Further, in the invention according to claim 2, a plurality of lines are formed in a direction intersecting the field edge at an upper end portion of the field edge of the ceiling in which a ceiling panel is attached to the lower surface of the plurality of field edges arranged in parallel. A suspended ceiling in which the ceiling is suspended and supported by connecting the lower edge of a suspension member whose upper end is coupled to the upper structure directly or via a coupling plate. In the extending direction of the field edge, the lower end is fixed to the field edge directly or via a connecting plate, and the upper end is fixed to the upper structure with two members of compression material and tension material. A pair of first V-shaped braces are provided, and a metal plate integrated with the field edge is provided at a desired position between the field edges, and is integrated with the metal plate in a direction crossing the field edge. A cross edge is provided, and the lower end is in the direction crossing the extending direction of the field edge. A second V-shaped brace that is fixed to the cross field edge directly or via a connecting plate and whose upper end is fixed to the above-described upper structure and that is a pair of two materials of a compression material and a tension material is provided. It is a feature.

  According to a third aspect of the present invention, a plurality of parallel strips are provided in a direction intersecting the field edge at the upper end of the field edge of the ceiling in which a ceiling panel is attached to the lower surface of the plurality of field edges arranged in parallel. A suspended ceiling in which the ceiling is suspended and supported by connecting the lower edge of a suspension member whose upper end is coupled to the upper structure directly or via a coupling plate. In the extending direction of the field edge, the lower end is fixed to the field edge directly or via a connecting plate, and the upper end is fixed to the upper structure with two members of compression material and tension material. A brace field dedicated to brace installation provided with a pair of first V-shaped braces and disposed at a desired position of the field edge in a direction intersecting the field edge and joined to the plurality of field edges. The edge receiver is provided separately from the field edge receiver and intersects the extension direction of the field edge. The lower end portion is fixed to the brace edge holder directly or via a connecting plate, and the upper end portion is paired with two members of a compression material and a tension material fixed to the upper structure. 2 V-type braces are provided.

  According to a fourth aspect of the present invention, there is provided a plurality of pieces in a direction intersecting the field edge at an upper end portion of the field edge of the ceiling in which a ceiling panel is attached to a lower surface of the plurality of field edges arranged in parallel. A suspended ceiling in which the ceiling is suspended and supported by connecting the lower edge of a suspension member whose upper end is coupled to the upper structure directly or via a coupling plate. The metal plate integrated with the ceiling panel or the field edge is provided at a desired position between the field edges, and the lower end portion is fixed to the metal plate directly or via a connecting plate in an arbitrary direction. A first V-shaped brace is provided in which the upper end is a pair of a compression material and a tension material fixed to the upper structure, and the lower end is in a direction intersecting the first V-shaped brace. The metal plate provided separately from the metal plate or the metal plate A second V-shaped brace is provided that is paired with two members of a compression member and a tension member that are fixed directly or via a connecting plate and whose upper end is fixed to the superstructure. It is.

  Furthermore, the invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the first V-type brace and the second V-type brace are subjected to horizontal deformation by elastic deformation during a large earthquake. It has the intensity | strength which functions as.

  According to the invention according to any one of claims 1 to 5, a suspension is formed by joining a field edge receiver intersecting with a field edge upper end of a ceiling having a ceiling panel attached to the field edge and suspending it from an upper structure. With respect to the suspended ceiling having a structure in which the lower end portion of the lowering member is connected to the field edge receiver and supported by hanging the ceiling, the extending direction of the field edge is between the field edge and the upper structure. For the direction intersecting with the extending direction of the above-mentioned field edge by providing one V-shaped brace, a cloth field edge or a dedicated area integrated directly or indirectly with the above-mentioned ceiling panel between the field edges of the desired position to be reinforced Since the second V-shaped brace is provided between the cross field edge or the brace field edge receiver and the upper structure, the first and second brace field edge receivers are provided. Restrain the ceiling directly with the second V-shaped brace, In order to be able to resist the horizontal force acting on the well, it is possible to obtain a high seismic effects.

  In addition, since the first and second V-shaped braces can be arranged at desired positions in the direction crossing each other, they are effective against horizontal force acting in any direction within the plane of the ceiling. Can resist.

  Incidentally, the first and second V-type braces are of a configuration that can resist the horizontal force acting on the ceiling in the event of an earthquake, as long as a pair is formed of two members of a compression material and a tension material. In this case, various configurations such as a V shape and a letter shape formed of a vertical material and a diagonal material can be applied. In particular, if the first and second V-shaped braces are provided in a V-shape, the horizontal force can be resisted by compression and tension with the minimum number of members, so that construction is easy and economical. Excellent in properties.

  Further, according to the present invention, since the first and second V-shaped braces can be disposed at desired positions where the seismic effect can be obtained, if the suspension members are not disposed, The workability is improved, and an effect is also obtained that it can be installed at a position avoiding equipment and equipment piping in the ceiling.

  Furthermore, according to the second aspect of the present invention, the cross field edge and the metal plate can be fixed with screws, and the metal plate and the field edge can be fixed with screws. There is an advantage that a screw for stopping the cross edge is not visible from the indoor side.

(First embodiment)
1 to 3 show a first embodiment of a suspended ceiling earthquake-resistant structure according to the present invention, and reference numeral 10 in the figure denotes a ceiling.
The ceiling 10 constitutes a ceiling surface as a whole by attaching and integrating a plurality of divided ceiling panels 12 to field edges 11a and 11b arranged at intervals. .

  Here, the field edges 11a and 11b are both made of channel steel having a C-shaped cross section, and each ceiling is directed upward, and the ceiling panel 12 is attached to the lower surface by screwing.

  A plurality of field receivers 13 are joined on these field edges 11a and 11b in a direction perpendicular to these field edges 11a and 11b. And the hanger 14 is joined to the side surface of these field edge receptacles 13 at intervals in the longitudinal direction, and the lower end of a suspension bolt (suspending member) 15 is connected to the hanger 14.

  The upper end portion of the suspension bolt 15 is connected to the lower surface of the upper structure 16. As a result, the ceiling 10 is suspended and supported by the upper structure 16 via the suspension bolt 15, the hanger 14 and the field edge receiver 13.

And the brace used as a seismic reinforcement is provided in the desired position of the suspended ceiling which consists of the above structure.
That is, with respect to the extending direction of the field edges 11a and 11b, as shown in FIGS. 1 and 3, a rectangular plate-shaped mounting plate 17 is fixed to the side surface of the field edge 11a or the field edge 11b by screws 18. The lower end of a pair of braces (first V-shaped braces) 19 arranged in a V shape is fixed to the mounting plate 17 with screws 20. The upper ends of the braces 19 are rigidly joined to a mounting hardware 21 joined to the lower surface of the upper structure 16. Note that the inclination angle θ _{3 with} respect to the horizontal of one brace 19 is an arbitrary angle in the range of 0 <θ ₃ <90 °, and the inclination angle θ _{4 with} respect to the horizontal of the other brace 19 is 0 <θ ₄ ≦ 90. Any angle in the range of °.

  As for the direction intersecting (more preferably orthogonal) with the extending direction of the field edges 11a and 11b, as shown in FIGS. 1 and 2, between the field edges 11a and 11b at a desired position to be seismically reinforced. A cross field edge 22 is provided so as to intersect (more preferably, intersect) with these. The cross field edge 22 is inserted between the field edges 11a and 11b so as to be at the same level as the field edges 11a and 11b. The ceiling panel 12 is integrally joined to the lower surface of the cross field edge 22 by screws.

A square plate-shaped mounting plate 23 is fixed to the side surface of the cross field edge 22 by screws 24, and is arranged in a V-shape on the mounting plate 23 in a direction intersecting the field edges 11a and 11b. A lower end portion of a pair of braces (second V-shaped braces) 25 is fixed by screws 26. On the other hand, the upper ends of these braces 25 are rigidly joined to an attachment hardware 26 joined to the lower surface of the upper structure 16. The inclination angle θ _{1 with} respect to the horizontal of one brace 25 is an arbitrary angle in the range of 0 <θ ₁ <90 °, and the inclination angle θ _{2 with} respect to the horizontal of the other brace 25 is 0 <θ ₂ ≦ 90. Any angle in the range of °.

  Incidentally, these braces 19 and 25 are all arranged at positions that do not interfere with the suspension bolt 15, equipment (not shown), its suspension members or sprinkler unwinding pipes, etc. 23 is also provided at a position away from the hanger 14 of the suspension bolt 15. Further, the braces 19 and 25 are both designed to have a strength that functions as a horizontal resistance element with respect to the ceiling 10 by elastic deformation during a large earthquake.

  According to the earthquake-resistant structure of the suspended ceiling having the above configuration, as shown in FIG. 3, the braces 19 are provided between the field edge 11a and the upper structure 16 in the extending direction of the field edges 11a and 11b. As shown in FIG. 2, in the direction intersecting with the extending direction of the field edges 11a and 11b, a cross field edge 22 integrated with the ceiling panel 12 is provided between the field edges 11a and 11b at desired positions to be reinforced. Since the brace 25 is provided between the cross field edge 22 and the upper structure 16, the ceiling 10 is directly restrained by the braces 19 and 25 and acts on the ceiling 10 even during a large earthquake. It can resist the force, and thus can obtain a high earthquake resistance effect and can effectively resist a horizontal force acting in any direction in the plane of the ceiling 10.

  In addition, when the braces 19 are provided in the extending direction of the field edges 11a and 11b and the braces 25 are provided in the direction intersecting with the braces 19, the braces 19 and 25 can be used regardless of the position of the suspension bolt 15 and the equipment and the like. Since it can arrange | position in the desired position avoided, the construction property improves.

  In addition, since the braces 19 and 25 are respectively provided in a V shape, the horizontal force directly transmitted from the ceiling 10 can be resisted by compression and tension with the minimum number of members, so that construction is easy. In addition, it is also economical.

(Second Embodiment)
FIGS. 5 and 6 show a mounting portion of the second V-type brace 25 in the second embodiment of the earthquake-proof structure of the suspended ceiling according to the present invention, and other parts including the first V-type brace 19 are shown. Since the configuration is the same as that shown in FIGS. 1 to 4, the description is simplified by using the same reference numerals.
In this earthquake-resistant structure of the suspended ceiling, a plurality of brace field edge receivers 30 dedicated to brace attachment are provided by clips 31 in a direction orthogonal to the extending direction of the field edges 11a and 11b. It is fixed on the field edges 11a and 11b of the book.

  A connecting plate 32 is attached to the brace field edge receiver 30. The connecting plate 32 includes a bottom plate portion 33 that contacts the upper surface of the ceiling panel 12, a side plate portion 34 formed by bending one side edge of the bottom plate portion 33 vertically upward, and the side plate portion. The top plate portion 35 is formed horizontally at the upper end of 34 and the level adjustment rib 36 for adjusting the attachment position of the connecting plate 32.

Here, the side plate portion 34 and the bottom plate portion 33 are formed with a notch portion 37 for inserting the field edge 11a (or 11b).
The connecting plate 32 has the side plate 34 in a state in which the field edge 11a (or 11b) is inserted into the notch 37 and the level adjusting rib 36 is positioned on the upper surface of the brace field receiver 30. It is brought into contact with the side surface of the brace field edge receiver 30 and is attached to the brace field edge receiver 30 by a plurality of (two in the figure) screws 38.

Here, the height dimension of the level adjustment rib 36 is determined in advance when the level adjustment rib 36 is positioned between the upper surface of the brace edge receiver 30 and the top plate portion 35 of the connection plate 32 in advance. The lower surface level of the bottom plate portion 33 is set to be the upper surface level of the ceiling panel 12.
And the lower end part of the said 2nd V-shaped brace 25 is being fixed to the side-plate part 34 of this connection plate 32 with a screw | thread or welding. Further, the ceiling panel 12 is screwed to the bottom plate portion 33.

  In the earthquake-proof structure of the suspended ceiling having the above configuration, when the brace 25 is attached, as described above, according to the dimensions of the field edges 11a, 11b, the brace field receiver 30 and the like used in advance for the suspended ceiling. When the height of the level adjusting rib 36 of the connecting plate 32 is adjusted as appropriate, the level adjusting rib 36 is positioned on the upper surface of the brace edge receiver 30, and the connecting plate 32 is attached to the bottom plate. The lower surface level of the portion 33 is set to be the upper surface level of the ceiling panel 12, that is, the lower surface level of the field edges 11a and 11b.

First, in a state where the ceiling panel 12 of FIG. 6 is not attached, the brace field edge receiver 30 is fixed to the field edges 11a and 11b by the clip 31 in a direction perpendicular to the extending direction.
Next, the connecting plate 32 is attached to the brace edge receiver 30 via the level adjusting ribs 36, and temporarily fixed with screws 38 at, for example, two places shown in the figure, and then the lower end of the brace 25 is fixed by screws or welding. Finally, the ceiling panel 12 is attached.

Therefore, the effect similar to what was shown in 1st Embodiment can be acquired also by the earthquake-resistant structure of the suspended ceiling which concerns on 2nd Embodiment.
In the first embodiment, the cross edge 22 and the brace 25 are usually attached before the ceiling panel 12 is attached in the construction procedure. For this reason, it is necessary to make the lower surface level of the cross field edge 22 coincide with the lower surface level of the field edges 11a and 11b in the state where the ceiling panel 12 is not present.

  In this respect, in the present embodiment, since the level adjustment rib 36 is used to attach the connecting plate 32, the ceiling panel 12 is attached by appropriately adjusting the height dimension of the level adjustment rib 36 in advance. Even when the bottom plate portion 33 is not in the state, the lower surface level of the bottom plate portion 33 is easily positioned on the upper surface of the ceiling panel 12, that is, the lower surface level of the field edges 11a and 11b, and the connecting plate 32 is fixed to the brace field receiver 30. And workability during construction can be improved.

  In the first and second embodiments described above, only the case where the braces 19 and 25 are provided in a V shape has been described. However, the present invention is not limited to this, and includes, for example, a vertical material and a diagonal material. Various configurations such as a letter shape can be applied.

  Further, in the first embodiment, the cross field edge 22 and the ceiling panel 12 are integrated with the ceiling panel 12 as well as the above-described direct screwing structure, for example, as shown in FIG. 12, a floor plate (metal plate) 27 is interposed, and the cross field edge 22 and the floor board 27 are fixed by screws 28, and the floor board 27 and the field edges 11 a and 11 b can be fixed by screws 29. According to this configuration, it is not necessary to screw the ceiling panel 12 to the cross edge, and there is an advantage that the screw that stops the cross edge cannot be seen from the indoor side.

  Further, the cross field edge 22 shown in FIG. 4 is omitted, the above-mentioned floor plate (metal plate) 27 is provided at a desired position, and the lower end of the brace 19 and / or the brace 25 is provided directly on the floor plate 27 or via a connecting plate. The part can also be fixed. In this case, the braces 19 and 25 can be installed in any direction regardless of the extending direction of the field edges 11a and 11b.

It is a top view which shows 1st Embodiment of the earthquake-resistant structure of the suspended ceiling which concerns on this invention. It is the II-II line view figure of FIG. It is the III-III line view figure of FIG. It is a longitudinal cross-sectional view of the principal part which shows the modification of the 1st Embodiment of this invention. It is a perspective view which shows the attachment structure of the brace field edge receiver in the 2nd Embodiment of this invention. It is a perspective view which shows the state which attached the connection board to the brace field edge receiver of FIG. It is a front view which shows the earthquake-resistant structure of the conventional suspension ceiling.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Ceiling 11a, 11b Field edge 12 Ceiling panel 13 Field edge receiver 15 Hanging bolt (hanging member)
16 Superstructure 19 Brace (first V-shaped brace)
22 Cross field edge 25 Brace (2nd V-shaped brace)
27 Base plate (metal plate)
30 Brace field guard 32 Connecting plate

Claims (5)

A plurality of field receivers are joined in a direction intersecting the field edge to the upper end of the field edge of the ceiling in which a ceiling panel is attached to the lower surface of the plurality of field edges arranged in parallel. In the suspended ceiling that supports the ceiling by suspending the ceiling by connecting the lower end of the suspension member whose upper end is coupled to the upper structure directly or via a coupling plate,
In the extending direction of the field edge, the lower end is fixed to the field edge directly or via a connecting plate, and the upper end is fixed to the upper structure, and a pair of two members of a compression material and a tension material. The first V-shaped brace
In addition, a cross field edge integrated with the ceiling panel is provided at a desired position between the field edges in a direction intersecting with the field edge, and a lower end portion of the cross is in the direction intersecting with the extending direction of the field edge. A second V-shaped brace is provided which is a pair of a compression material and a tension material which are fixed to the field edge directly or via a connecting plate and whose upper end is fixed to the superstructure. Seismic structure of suspended ceiling. A plurality of field receivers are joined in a direction intersecting the field edge to the upper end of the field edge of the ceiling in which a ceiling panel is attached to the lower surface of the plurality of field edges arranged in parallel. In the suspended ceiling that supports the ceiling by suspending the ceiling by connecting the lower end of the suspension member whose upper end is coupled to the upper structure directly or via a coupling plate,
In the extending direction of the field edge, the lower end is fixed to the field edge directly or via a connecting plate, and the upper end is fixed to the upper structure, and a pair of two members of a compression material and a tension material. The first V-shaped brace
In addition, a metal plate integrated with the field edge is provided at a desired position between the field edges, and a cross field edge integrated with the metal plate is provided in a direction intersecting with the field edge. In a direction crossing the existing direction, the lower end is fixed to the cross field edge directly or via a connecting plate, and the upper end is fixed to the upper structure, and a pair of two members of a compression material and a tension material. A suspended ceiling earthquake-resistant structure, characterized in that a second V-shaped brace is provided. A plurality of field receivers are joined in a direction intersecting the field edge to the upper end of the field edge of the ceiling in which a ceiling panel is attached to the lower surface of the plurality of field edges arranged in parallel. In the suspended ceiling that supports the ceiling by suspending the ceiling by connecting the lower end of the suspension member whose upper end is coupled to the upper structure directly or via a coupling plate,
In the extending direction of the field edge, the lower end is fixed to the field edge directly or via a connecting plate, and the upper end is fixed to the upper structure, and a pair of two members of a compression material and a tension material. The first V-shaped brace
In addition, a brace field ledge for exclusive use of brace that is arranged in a direction intersecting the field rim and joined to the field rim at a desired position of the field rim is provided separately from the field edge receiver. A compression material and a tension material in which the lower end is fixed to the brace field receiver directly or via a connecting plate and the upper end is fixed to the upper structure in a direction intersecting the extending direction of the field edge And a second V-shaped brace that is paired with two materials. A plurality of field receivers are joined in a direction intersecting the field edge to the upper end of the field edge of the ceiling in which a ceiling panel is attached to the lower surface of the plurality of field edges arranged in parallel. In the suspended ceiling that supports the ceiling by suspending the ceiling by connecting the lower end of the suspension member whose upper end is coupled to the upper structure directly or via a coupling plate,
A metal plate integrated with the ceiling panel or the field edge is provided at a desired position between the field edges, and a lower end is fixed to the metal plate directly or via a connecting plate in an arbitrary direction and an upper end. Is provided with a first V-shaped brace that is paired with two members of a compression member and a tension member fixed to the superstructure,
And the lower end is fixed to the metal plate provided separately from the metal plate or the metal plate in a direction intersecting the first V-shaped brace, or the upper end is fixed to the metal plate via a connecting plate. An earthquake-resistant structure for a suspended ceiling, characterized in that a second V-shaped brace that is paired with two members of a compression member and a tension member fixed to the upper structure is provided.   5. The suspended ceiling according to claim 1, wherein the first V-type brace and the second V-type brace have a strength that functions as a horizontal resistance element by elastic deformation during a large earthquake. Seismic structure.

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