JP2015203230A - suspended ceiling structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suspended ceiling structure capable of preventing damage or falling-off of ceiling material (ceiling panel) as well as reliably preventing falling-off of small pieces or the like upon an earthquake, which allows reinforcement and repair to be made simultaneously.SOLUTION: A suspended ceiling structure B includes: a ceiling substrate 7 which is hung and supported by an upper structure 3 of a building skeleton being interposed by a suspending member 4; and a ceiling material 6 which forms a ceiling plane. A sheet-like and/or lattice-like fall-off prevention member 15 is integrally stuck over the ceiling plane of the ceiling material 6 using an adhesive agent. The fall-off prevention member 15 is connected to the building skeleton via a support member 16.

Description

  The present invention relates to a suspended ceiling structure.

  Conventionally, suspended ceilings are frequently used as ceilings of buildings such as schools, hospitals, production facilities, gymnasiums, pools, airport terminal buildings, office buildings, theaters, cinecones, etc. (see, for example, Patent Document 1 and Patent Document 2). . The suspended ceiling (suspended ceiling structure) A has a plurality of field edges 1 arranged in parallel at a predetermined interval in one horizontal direction T1, and is orthogonal to the field edges 1, for example, as shown in FIG. , A plurality of field receivers 2 that are provided in parallel in the other direction T2 in the horizontal direction and are integrally connected to a plurality of field edges 1, a lower end is connected to the field receiver 2, and an upper end is A plurality of suspension bolts (suspending members) 4 fixedly disposed on an upper structure (building frame) 3 such as a flooring material on the upper floor, and a grid-like ceiling base 7 including a field edge 1 and a field edge receiver 2 ( There are some which are provided with a ceiling panel (ceiling material) 6 such as a gypsum board which is integrally attached by screwing to the lower surface of the field edge 1 and forms a ceiling surface (ceiling part 5).

  For example, as shown in FIG. 7, a suspended ceiling (suspended ceiling structure) A in which a heavy equipment such as a fan filter unit needs to be installed on the ceiling 5 as in a clean room has a horizontal direction T1. A plurality of T bars (supporting members having a reverse T-shaped cross section) 8 which are arranged in parallel with each other at a predetermined interval and extend in the other direction T2 orthogonal to one direction T1, and the upper end is fixed to the upper structure, and the lower end side is set to T A plurality of suspension bolts (suspension members) 4 connected to the bar 8 and a ceiling base 7 made of a T bar 8 or the like are screwed together to form a ceiling surface (ceiling portion 5). There is also a configuration including a ceiling panel (ceiling material) 6.

  Here, the suspended ceiling A formed by supporting the ceiling edge 7 and the ceiling panel 6 such as the field edge 1 and the field edge receiver 2 and the T-bar 8 with the suspension bolt 4 in this way is structurally resistant to an earthquake. It is easy to roll due to the applied horizontal force. Then, when the earthquake sways, the end portion 5a of the ceiling portion 5 may collide with a building component (building frame) 9 such as a wall, a column, or a beam, and the ceiling panel 6 may be damaged or fallen off. there were.

  For this reason, a reinforcing brace 10 is conventionally provided by connecting the upper end side to the upper structure 3 and the like, and connecting the lower end side to the ceiling base 7 such as the suspension bolt 4, the field edge 1, the field edge receiver 2, and the T-bar 8. In addition, the rolling of the ceiling portion 5 composed of the ceiling base 7 and the ceiling panel 6 is suppressed during an earthquake (see FIG. 7).

  On the other hand, when performing seismic reinforcement and seismic retrofit by the reinforcing brace 10, it is necessary for an operator to enter the ceiling space H and perform installation work. For this reason, there is a case in which the range that can be reinforced is limited by wiring, piping, an air conditioner, or the like arranged in the ceiling space H, and cannot be adequately handled. In addition, low-strength general materials that are not JIS materials are used for the ceiling base 7, etc., and the performance after reinforcement is unstable and sufficient repair accuracy cannot be ensured, or because there are spot welds etc. There is also.

JP 2008-121371 A JP 2005-350950 A

  On the other hand, since the ceiling panel (ceiling material) 6 such as gypsum board is a low-rigidity material (brittle material), the ceiling panel becomes more rigid in the earthquake as the ceiling foundation becomes more rigid or the reinforcement brace is made more rigid. In particular, stress is concentrated around the screws of the ceiling panel that fixes the ceiling panel to the ceiling base, and this portion may be brittlely broken to cause breakage of the ceiling panel and dropout.

  In addition, there are measures to directly attach the ceiling panel to the grape shelf steel frame or attach a net to the ceiling surface of the ceiling panel to prevent the ceiling panel from falling off, but in these measures, for example, theaters and large conference rooms, When the ceiling height of exhibition facilities, etc. is high, the ceiling area is very large, or the ceiling has a complicated shape, its application may be difficult or the appearance may be impaired. But there is a problem. Furthermore, local damage such as around the screw, that is, there is a risk that it may not be able to cope with the falling off of fragments.

  In view of the above circumstances, the present invention makes it possible to surely prevent the falling off of small pieces and the like while preventing the breakage and dropping of the ceiling material (ceiling panel) during an earthquake, and simultaneously performing reinforcement and repair. An object of the present invention is to provide a suspended ceiling structure.

  In order to achieve the above object, the present invention provides the following means.

  The suspended ceiling structure of the present invention is a suspended ceiling structure in which a ceiling material that forms a ceiling surface is attached to a ceiling base that is suspended and supported by an upper structure of a building frame via a suspension member. A sheet-shaped and / or lattice-shaped drop-off prevention member is integrally attached with an adhesive, and the drop-off prevention member is connected to the building frame via a support member.

  Further, in the suspended ceiling structure of the present invention, the support member is connected to the shaft portion disposed through the ceiling material and one end portion of the shaft portion and extends in the lateral direction, and the ceiling material A locking portion disposed so as to sandwich the drop-off prevention member therebetween, and the other end portion side of the shaft portion and the building housing, and the drop-off is interposed via the shaft portion and the locking portion. It is desirable to comprise a prevention member and a suspension part for supporting the ceiling member in a suspended manner.

  In the suspended ceiling structure of the present invention, a sheet-shaped and / or grid-shaped drop-off preventing member is integrally attached to the ceiling surface of the ceiling material with an adhesive, thereby fixing the ceiling material to the ceiling base in the event of an earthquake. It is possible to prevent the stress from being concentrated in the area. That is, it is possible to suppress screw drop, cone-like destruction of the ceiling material, ply-out destruction, and the like. Thereby, it is possible to prevent the ceiling material from peeling off or falling off by attaching the drop-off preventing member to the extensive ceiling surface of the ceiling material with the adhesive.

  Therefore, according to the suspended ceiling structure of the present invention, the ceiling material (ceiling panel) can be used at the time of an earthquake without impairing the appearance and reducing the frequency of maintenance without deteriorating the appearance as compared with the case of using a conventional net or the like. Can be prevented from being damaged or dropped. In addition, it is possible to reliably prevent small pieces from falling off. In addition, reinforcement and repair can be performed simultaneously.

It is the perspective view seen from the ceiling surface side which shows the suspended ceiling structure which concerns on one Embodiment of this invention. It is a sectional side view which shows the suspended ceiling structure which concerns on one Embodiment of this invention. It is the perspective view seen from the ceiling surface side which shows the example of a change of the suspended ceiling structure which concerns on one Embodiment of this invention. It is the perspective view seen from the ceiling surface side which shows the example of a change of the suspended ceiling structure which concerns on one Embodiment of this invention. It is a sectional side view which shows the example of a change of the suspended ceiling structure which concerns on one Embodiment of this invention. It is the perspective view seen from the ceiling surface side which shows the conventional suspension ceiling structure. It is the perspective view seen from the ceiling back side which shows the conventional suspended ceiling structure.

  Hereinafter, a suspended ceiling structure according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2 (FIGS. 6 and 7). Here, the present embodiment is, for example, a suspended ceiling structure used as a ceiling of buildings such as schools, hospitals, production facilities, gymnasiums, pools, airport terminal buildings, office buildings, theaters, cinecones, etc. and earthquake resistance of existing suspended ceiling structures. It is about repair method.

  The suspended ceiling (suspended ceiling structure) B of the present embodiment is configured to include a field edge 1, a field edge receiver 2, a suspension member (suspension bolt) 4, and a ceiling material 6, as shown in FIGS. ing.

  The field edge 1 is, for example, a grooved steel having a U-shaped cross section, and extends horizontally, and is arranged in parallel at a predetermined interval in a horizontal direction T1 in one horizontal direction. .

  The field edge receiver 2 is, for example, a grooved steel having a U-shaped cross section, is horizontally extended, and is arranged in parallel with a predetermined interval in the horizontal direction T2 in the other horizontal direction. Yes. At this time, the field edge receiver 2 is disposed so as to intersect the field edge 1 and is disposed in a state of being placed on the plurality of field edges 1. Each field edge receiver 2 is connected to the field edge 1 by using a field edge connection fitting (clip) 12 at a portion intersecting the field edge 1.

  The suspension member 4 is a suspension bolt that is formed in a cylindrical bar shape and has an external thread threaded on its outer peripheral surface, and its upper end is fixed to an upper structure 3 (building frame) such as an upper floor or is made of steel. A plurality of lower ends are connected and connected to the field edge receiver 2 by using a hanging member connecting metal fitting (hanger) 13. Further, the plurality of suspension members 4 are dispersedly arranged at a predetermined interval.

The ceiling material (ceiling panel) 6 is formed by laminating two boards and integrally stacking them. For example, the ceiling material (ceiling panel) 6 is formed with a weight of about 20 kg per 1 m ² together with the weight of a ceiling accessory. The ceiling material 6 is installed on the lower surfaces of the plurality of field edges 1 by screws or the like. The ceiling material 6 may be composed of one board and three or more boards.

  In the suspended ceiling B, the field edge 1, the field edge receiver 2, and the ceiling material 6 are suspended and supported by the upper structure 3 of the building via the suspension member 4. Further, the ceiling base 7 is formed by the field edge 1 and the field edge receiver 2, and the ceiling part 5 is formed by the ceiling base 7 and the ceiling material 6 attached to the ceiling base 7, and the ceiling surface of the lower floor is formed by the ceiling part 5, respectively. Has been.

  On the other hand, in the suspended ceiling B of the present embodiment, the drop-off prevention member 15 is integrally attached to the ceiling surface of the ceiling material 6 using an adhesive. The drop-off prevention member 15 is formed in a sheet shape or a grid shape. For example, a uniaxial, biaxial, triaxial fiber sheet (fiber mesh), nonwoven fabric using vinylon fiber, glass fiber, aramid fiber, or the like is used. A fiber sheet such as FRP grid or the like is applied.

  Further, the drop-off preventing member 15 is attached to the ceiling material 6 in whole or in part by applying an adhesive to the ceiling material 6 or impregnating the adhesive with the adhesive.

  The drop-off prevention member 15 is formed by providing an adhesive layer (adhesive) on the adhesive surface in advance, attaching the release paper to the adhesive layer, peeling the release paper on site, and attaching the adhesive layer to the ceiling surface of the ceiling material 6. May be adhered and pasted. In this case, since it is not necessary to apply or impregnate the adhesive on site, the design can be improved. Further, the labor and labor required for the work of attaching the drop-off prevention member 15 can be greatly reduced, and the workability during reinforcement and repair can be greatly improved.

  In addition, when the drop-off prevention member 15 is attached to the ceiling member 6 with an adhesive, the surface of the drop-off prevention member 15 (or impregnated resin) is subjected to finish coating to improve and secure the design. May be.

Furthermore, as shown in FIG. 2, the dropout prevention member 15 is connected to the building frame via a plurality of support members 16.
Specifically, in the present embodiment, the support member 16 is made of hardware, and is connected to the shaft portion 16a disposed through the ceiling member 6 and one end portion of the shaft portion 16a in the lateral direction T1. A substantially disc-shaped locking portion 16b that is provided so as to sandwich the drop-off prevention member 15 between the ceiling member 6 and the lower end side is screwed to the other end side of the shaft portion 16a. The upper end side is connected to the building frame (upper structure 3), and the drop-off prevention member 15 and the suspension part 16c for supporting the ceiling member 6 are supported via the shaft parts 16a and 16b engaging parts. It is configured.

  In the suspended ceiling B of the present embodiment having the above-described configuration, the sheet-like and / or lattice-like dropout prevention member 15 is integrally attached to the ceiling surface of the ceiling material 6 with an adhesive, so that during an earthquake, It is possible to prevent stress from being concentrated on a screw or the like that fixes the ceiling material 6 to the ceiling base 7. That is, it is possible to prevent screw dropout, cone-like destruction of the ceiling material 6, ply-out destruction, and the like. Thereby, it is possible to prevent the ceiling material 6 from peeling off or dropping off by attaching the drop-off preventing member 15 to the wide area of the ceiling surface of the ceiling material 6 with an adhesive.

  Even in the event that damage occurs around the screw, the drop-off prevention member 15 is stuck, and the drop-off prevention member 15 is connected to the building housing 3 via the support member 16. Therefore, it is possible to reliably prevent the ceiling material 6 from peeling off or dropping off.

  Furthermore, for example, by using a fiber sheet using vinylon fiber, glass fiber, or the like, an FRP grid, or the like as the drop-off preventing member 15, the ceiling material 6 can be prevented from being peeled off and dropped off at a low cost. Also, compared to the Internet, there is almost no need for maintenance.

  Therefore, according to the suspended ceiling B of the present embodiment, compared with the case of using a conventional net or the like, the ceiling material (ceiling panel) can be used during an earthquake without impairing the external appearance and requiring no maintenance or reducing the frequency thereof. ) 6 can be prevented from being broken or dropped. In addition, it is possible to reliably prevent small pieces from falling off. In addition, reinforcement and repair can be performed simultaneously. Furthermore, even when the ceiling height of a theater, a large conference room, an exhibition facility, etc. is high, the ceiling area is very large, or the ceiling has a complicated shape, the drop-off prevention member 15 is sequentially placed on the ceiling surface. Since it should just stick with an adhesive agent, it can apply easily and reliably. That is, it is possible to provide a highly versatile ceiling material falling / falling prevention measure.

  In addition, in the suspended ceiling B of the present embodiment, the support member 16 is connected to the shaft portion 16 a disposed through the ceiling material 6 and one end of the shaft portion 16 a, and between the ceiling material 6. A locking portion 16b disposed so as to sandwich the dropout prevention member 15 and a suspension portion 16c connected to the shaft portion 16a and the building housing 3 to suspend and support the dropout prevention member 15 and the ceiling material 6 are provided. Thus, the ceiling member 6 on which the drop-off preventing member 15 is integrally attached can be suspended and supported by the support member 16.

  That is, the drop-off preventing member 15 is attached to the ceiling material 6 with an adhesive, the shaft portion 16a is penetrated from the ceiling surface 6 to the ceiling material 6 and the locking portion 16b is locked, and the shaft portion 16a in the ceiling back space H. By tightening the suspension portion 16c to the building housing 3, the reinforcing effect and the repair effect can be simultaneously and reliably imparted to the suspended ceiling B.

  As mentioned above, although one embodiment of the suspended ceiling structure according to the present invention has been described, the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention.

  For example, in the present embodiment, the ceiling foundation 7 is configured to include the field edge 1 and the field edge receiver 2, but the ceiling foundation according to the present invention is not necessarily limited to the present embodiment. For example, a plurality of T bars that are suspended and supported by the suspension bolts (suspending members) 4 and arranged in parallel in one horizontal direction T1 at a predetermined interval and extend in the other direction T2 orthogonal to the one direction T1. It may be a ceiling base 7 configured with a (cross-section inverted T-shaped support member) 8. That is, the present invention does not need to limit the configuration of the ceiling foundation.

  Further, the support member 16 may not necessarily be configured as in the present embodiment as long as the dropout prevention member 15 can be connected to the building frame. For example, as shown in FIGS. 3, 4, and 5, a grid material may be used as the support member 16 (including a member that forms a locking portion in a grit shape). Further, as shown in FIGS. 3 and 4, the support member 16 uses a connector 17 so that the end portion of the drop-off prevention member 15 is connected to the upper structure (building frame) 3 from the end portion side of the ceiling portion 5. Alternatively, as shown in FIG. 5, the end of the drop-off prevention member 15 may be formed and disposed so as to be connected to a building component (building frame) 9 such as a wall.

1 Field edge 2 Field edge receiver 3 Superstructure (building frame)
4 Hanging members (hanging bolts)
5 Ceiling part 5a End part 6 Ceiling material (ceiling panel)
7 Ceiling base 8 T-bar 9 Building component (building frame)
10 Reinforced brace 12 Field edge fitting (clip)
13 Hanging member connection bracket (hanger)
15 Drop-off prevention member 16 Support member 16a Shaft portion 16b Locking portion 16c Hanging portion 17 Connector A Conventional suspended ceiling (conventional suspended ceiling structure)
B Suspended ceiling (suspended ceiling structure)
H Ceiling space T1 Horizontal direction (one direction)
T2 lateral direction (other direction)
T3 vertical direction

Claims (2)

In the suspended ceiling structure in which the ceiling material that forms the ceiling surface is attached to the ceiling base that is suspended and supported by the upper structure of the building frame via the hanging member,
A sheet-like and / or grid-like drop-off prevention member is integrally attached to the ceiling surface of the ceiling material with an adhesive, and the drop-off prevention member is connected to the building frame via a support member. Characteristic suspended ceiling structure. The suspended ceiling structure according to claim 1,
The support member is connected to one end of the shaft portion that extends through the ceiling material, and extends in the lateral direction so that the fall prevention member is sandwiched between the ceiling material. A locking portion disposed on the shaft, connected to the other end side of the shaft portion and the building housing, and supports the drop-off prevention member and the ceiling material through the shaft portion and the locking portion. A suspended ceiling structure characterized by comprising a suspension part.

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