JP2013155579A - Suspended ceiling structure - Google Patents

Abstract

Provided is a suspended ceiling structure capable of preventing breakage or dropout of a ceiling material (ceiling panel) during an earthquake while ensuring workability and economy, and having excellent earthquake resistance.
A field edge receiver 2 suspended and supported by a superstructure 3 of a building via a suspension member 4, a field edge 1 attached to the field edge receiver 2, and a ceiling portion 5 attached to the field edge 1 In the suspended ceiling structure B including the ceiling material 6 to be formed, an impact is generated between the end 5a of the ceiling 5 and the building component 8 disposed in the lateral directions T1 and T2 of the end 5a of the ceiling 5. The absorbent material 15 is interposed.
[Selection] Figure 2

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, swimming pools, airport terminal buildings, office buildings, theaters, and cinecones. The suspended ceiling (suspended ceiling structure) A is, for example, as shown in FIG. 8, a plurality of field edges 1 arranged in parallel at a predetermined interval in one horizontal direction T1, and orthogonal to the field edges 1. A plurality of field receivers 2 that are arranged in parallel in the other horizontal direction T2 with a predetermined interval and are integrally connected to a plurality of field edges 1, a lower end connected to the field receiver 2, and an upper end A plurality of suspension bolts (suspending members) 4 fixedly disposed on the upper structure 3 such as floor materials of the floor and the lower surface of the field edge 1 are integrally attached by screws or the like, and the ceiling surface (ceiling of the lower floor) And a ceiling panel (ceiling material) 6 forming part 5).

  On the other hand, the suspended ceiling A formed by suspending and supporting the ceiling base 7 and the ceiling panel 6 of the field edge 1 and the field edge receiver 2 with the suspension bolts 4 rolls due to the horizontal force acting during the earthquake due to its structure. It's easy to do. Then, it rolls at the time of the earthquake, and the end 5a of the ceiling part 5 collides with a building structural member 8 such as a wall, a column, or a beam, and the ceiling panel 6 may be damaged or fallen off. In addition, when the end portion 5a of the ceiling portion 5 hits the building component 8 during an earthquake, a loud sound is generated, and this collision sound may terrify the user of the building and induce a secondary disaster such as a panic. there were. In addition, it rolls at the time of an earthquake, and an opening is formed in the ceiling part 5, and the end of the opening part for installing the ceiling part auxiliary equipment such as lighting and air conditioner collides with the ceiling part auxiliary equipment, and the ceiling panel 6 is damaged. There is also a risk of falling off or crashing.

  For this reason, for example, by providing a clearance of about 100 mm between the building component 8 and the end portion 5a of the ceiling portion 5 in advance, the end portion 5a of the ceiling portion 5 is provided even when rolling occurs due to an earthquake. There is also a suspended ceiling A configured so as not to collide with the building component 8 (see, for example, Patent Document 1). However, in this case, a member for closing the clearance and hiding the space behind the ceiling from the room side is required, resulting in an increase in cost. Further, the airtightness is reduced by the clearance, and the indoor air conditioning efficiency is reduced. Inconvenience occurs.

  On the other hand, in Patent Document 2, a ceiling vibration control device such as a viscoelastic damper is interposed between the building structural members 8, and the ceiling vibration control device absorbs the displacement of the ceiling portion 5 during an earthquake to prevent a collision. A suspended ceiling configured to do so is disclosed.

Utility Model Registration No. 3102816 JP 2008-138464 A

  However, as in Patent Document 2, when a ceiling vibration control device such as a viscoelastic damper or an oil damper is used to prevent the collision of the end of the ceiling during an earthquake, the suspended ceiling may still be expensive. Is expensive. In addition, when an existing suspended ceiling is retrofitted with earthquake resistance, a large amount of labor and cost will be required for the work, such as dismantling the ceiling in a wide range in order to install the ceiling damping device.

  For this reason, it is difficult to realistically apply measures to prevent the collision of the end of the ceiling part by installing such a ceiling vibration control device. There has been a strong demand for a method that can prevent end collisions and can be suitably used not only for new construction but also for seismic retrofit of existing suspended ceiling structures.

  In view of the above circumstances, the present invention provides a suspended ceiling structure that can prevent breakage or dropout of a ceiling material (ceiling panel) during an earthquake while ensuring workability and economy, and has excellent seismic performance. For the purpose.

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

  The suspended ceiling structure of the present invention includes a field edge receiver supported by being suspended from the upper structure of a building via a suspension member, a field edge attached to the field edge receiver, and a ceiling part attached to the field edge. In the suspended ceiling structure provided with a ceiling material to be used, a shock absorbing material is provided between the end of the ceiling and the building component and / or the ceiling equipment attached in the lateral direction of the end of the ceiling. It is characterized by comprising.

  In this invention, since the shock absorber is interposed between the end of the ceiling and the building component such as a wall, a column, or a beam, a suspended ceiling structure is formed by a horizontal force acting during an earthquake. When rolling, the end of the ceiling does not directly collide with the building component, and the impact force can be absorbed and reduced by the impact absorbing material. In addition, by installing an impact absorbing material between the end of the opening formed in the ceiling to install the ceiling accessory such as lighting and air conditioner, and the ceiling accessory, When a suspended ceiling structure rolls due to a horizontal force acting during an earthquake, the opening end of the ceiling does not directly collide with the incidental equipment of the ceiling, and the impact force is absorbed and reduced by the shock absorber. be able to. Further, by absorbing the impact force by the impact absorbing material in this way, it is possible to suppress the rolling of the suspended ceiling structure (attenuate the vibration energy).

  As a result, it is possible to prevent the ceiling material (ceiling panel) from being damaged or falling off during an earthquake, and a loud noise is generated when the end of the ceiling hits a building component or ancillary equipment during an earthquake. In addition, it is possible to prevent this collision sound from causing fear of the building user and inducing a secondary disaster such as a panic.

  Also, shock absorbers can be easily attached between the end of the ceiling, the building component, and the ceiling accessory by attaching it to the edge of the ceiling, the building component, and the side of the ceiling accessory. Compared to the installation of ceiling seismic control devices such as conventional viscoelastic dampers and oil dampers, the construction efficiency is low, and it is possible to give excellent earthquake resistance performance to the suspended ceiling structure at low cost. become.

  In the suspended ceiling structure of the present invention, it is desirable that the shock absorbing material is a low repulsion material.

  In this invention, by using a low resilience material such as low resilience urethane foam, EPDM low resilience foamed rubber, or hollow rubber as an impact absorbing material, the impact force is reliably absorbed and the suspended ceiling structure rolls during an earthquake. In addition to being able to suppress, it is possible to prevent the ceiling material from being damaged or dropped off. In addition, the low resilience material is inexpensive and can be easily attached to the end of the ceiling, the building component, the side of the ceiling accessory, etc. Since it can be attached between incidental facilities, it is possible to provide excellent seismic performance while ensuring workability and economy.

  Furthermore, in the suspended ceiling structure of the present invention, a peripheral member that forms a peripheral edge of the suspended ceiling structure is provided on the outer peripheral end of the ceiling and / or the building component, and the peripheral member is More preferably, the shock absorbing material is integrally provided.

  In this invention, for example, in order to secure the design of the outer peripheral end side of the ceiling portion, and the peripheral member attached to close the clearance provided between the outer peripheral end portion of the ceiling portion and the building component. Since the shock absorbing material is integrally provided, the peripheral member is attached to the outer peripheral edge of the ceiling and the building component, and the shock absorber is easily placed between the ceiling and the building component. It becomes possible to intervene. That is, it is possible to easily attach seismic performance while attaching the peripheral member.

  In the suspended ceiling structure of the present invention, the shock absorber is interposed between the end of the ceiling and the building components such as walls, columns, and beams, and the incidental equipment on the ceiling. When the suspended ceiling structure rolls due to force, the end of the ceiling does not directly collide with building components or ceiling equipment, and the impact force can be absorbed and reduced by the shock absorber. it can. Further, by absorbing the impact force by the impact absorbing material in this way, it is possible to suppress the rolling of the suspended ceiling structure.

  As a result, it is possible to prevent the ceiling material (ceiling panel) from being damaged or falling off during an earthquake, and a loud noise is generated when the end of the ceiling hits a building component or ancillary equipment during an earthquake. In addition, it is possible to prevent this collision sound from causing fear of the building user and inducing a secondary disaster such as a panic.

  Also, shock absorbers can be easily attached between the end of the ceiling, the building component, and the ceiling accessory by attaching it to the edge of the ceiling, the building component, and the side of the ceiling accessory. Compared to the installation of ceiling seismic control devices such as conventional viscoelastic dampers and oil dampers, the construction efficiency is low, and it is possible to give excellent earthquake resistance performance to the suspended ceiling structure at low cost. become.

  Therefore, according to the suspended ceiling structure of the present invention, it is possible to secure workability and economical efficiency by interposing the shock absorbing material between the end of the ceiling part and the building component or the ceiling accessory. It is possible to prevent the ceiling material from being damaged or dropped during an earthquake, and to provide excellent earthquake resistance.

It is a perspective view 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, and is the figure which expanded the outer peripheral edge part side of the ceiling part. 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, and is the figure which expanded the outer peripheral edge part side of the ceiling part. 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, and is the figure which expanded the outer peripheral edge part side of the ceiling part. It is a sectional side view (figure which expanded the outer peripheral edge part side of a ceiling part) which shows the example of a change of the suspended ceiling structure which concerns on one Embodiment of this invention, and is a figure which shows the periphery member provided with the impact-absorbing material. It is a sectional side view (figure which expanded the outer peripheral edge part side of a ceiling part) which shows the example of a change of the suspended ceiling structure which concerns on one Embodiment of this invention, and is a figure which shows the periphery member provided with the impact-absorbing material. It is a sectional side view which shows the suspended ceiling structure which concerns on one Embodiment of this invention, and is the figure which expanded the attachment part of ceiling part incidental facilities, such as an air-conditioner. It is a perspective view 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 to 6. Here, the present embodiment relates to the structure of a suspended ceiling of a building such as a school, a hospital, a production facility, a gymnasium, a pool, an airport terminal building, an office building, a theater, or a cine-con.

  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 formed in 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 receiver 2 is, for example, a grooved steel having a U-shaped cross section, and extends horizontally and is arranged in parallel at predetermined intervals 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) 10 at an intersection that intersects the field edge 1.

  The suspension member 4 is a suspension bolt formed in the shape of a cylindrical bar and having an external thread threaded on its outer peripheral surface, and its upper end is fixed to an upper structure 3 such as a floor material on an upper floor or is tightly coupled to a steel joist or the like. Then, a plurality of lower end sides are connected to the field edge receiver 2 by using a hanging member connecting metal fitting (hanger) 11. 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. Moreover, a ceiling base 7 is formed by the field edge 1 and the field edge receiver 2, and a ceiling part 5 is formed by the ceiling material 6 attached to the ceiling base 7, and a ceiling surface of the lower floor is formed by the ceiling part 5.

  On the other hand, in the suspended ceiling B of the present embodiment, the outer peripheral end (end) 5a of the ceiling 5 and the wall disposed opposite to the outer peripheral end 5a of the ceiling 5 in the lateral directions T1 and T2 A shock absorbing material 15 is interposed between the building constituent members 8 such as columns and beams.

  In the present embodiment, the shock absorber 15 is, for example, silicon, polypropylene, polyurethane resin having many features such as light weight, shock absorption, vibration damping, body pressure dispersibility, sound absorption, and heat insulation performance. A low-resilience material made from coconut is used. Furthermore, the shock absorber 15 has, for example, a characteristic of a shock-absorbing foam having a large hysteresis loss rate (JIS K 6400-2), that is, a restoring property that slowly returns to the base when an external force is removed after compression. It is preferable to use a low resilience material such as a low resilience foam having a rebound resilience ratio of about 15% or less (JIS K 6400-3). However, the impact absorbing material according to the present invention is not necessarily limited to the above-described low resilience material as long as it has impact absorbability.

  And in this embodiment, as shown in FIG. 2, such an impact-absorbing material 15 is affixed on the side surface of building structural members 8, such as a wall, a pillar, and a beam, and the outer peripheral edge part 5a of the ceiling part 5 and a building The component member 8 is interposed between the lateral directions T1 and T2. The shock absorber 15 is attached to the outer peripheral end 5a of the ceiling 5 as shown in FIG. 3 and is interposed between the outer peripheral end 5a of the ceiling 5 and the building component 8. Good. Further, as shown in FIG. 4, a fixture 16 fixedly attached to the outer peripheral end 5a of the building component member 8 or the ceiling portion 5 is used. For example, a shock absorber is applied to the fixture 16 made of metal, plastic, or the like. 15 may be held, and the shock absorber 15 may be interposed between the outer peripheral end 5 a of the ceiling portion 5 and the building component 8.

  Here, on the suspended ceiling, for example, a metal or plastic peripheral member 17 is attached to the outer peripheral end portion 5a of the ceiling portion 5 (ceiling member 6), and the outer peripheral end portion 5a of the ceiling portion 5 and the building component member 8 are engaged with each other. Some are configured to ensure (good) the appearance of the portion (see FIG. 5). Further, a clearance of, for example, about 100 mm is provided between the lateral ends T1 and T2 between the outer peripheral end portion 5a of the ceiling portion 5 and the building component 8, and the peripheral edge having a closed portion 18a that covers and closes this clearance in the vertical direction T3. There exists what comprised the member 18 (refer FIG. 6).

  For this reason, for example, as shown in FIG. 5, for example, as shown in FIG. 5, the peripheral member 17 installed to improve the appearance of the outer peripheral end portion 5 a of the ceiling portion 5 and the building component 8 is used. A fitting recess 17a for fitting the peripheral member 17 to the outer peripheral end 5a by fitting the portion 5a, and a shock absorber holding portion for holding the shock absorber 15 integrally on the building component 8 side 17b, and the shock absorber 15 may be configured to be integrally held by the shock absorber holding portion 17b. Moreover, it is preferable to form the shock absorber holding portion 17b so as to open toward the building component member 8 and to be recessed toward the fitting recess 17a, and to hold the shock absorber 15 in an integrated manner.

  And when the surrounding edge member 17 is formed in this way, the shock absorbing material 15 is integrally provided by fitting into the shock absorbing material holding portion 17b, and the outer peripheral end portion 5a of the ceiling portion 5 is fitted into the fitting recess. Fit into 17a. Thereby, while being able to improve the external appearance of the connection part of the outer peripheral end part 5a of the ceiling part 5 and the building structural member 8, between the outer peripheral end part 5a of the ceiling part 5 and the horizontal direction T1, T2 of the building structural member 8 Thus, the shock absorber 15 is easily interposed.

  Further, for example, as shown in FIG. 6, for example, the peripheral member 18 that closes the clearance provided between the outer peripheral end portion 5 a of the ceiling portion 5 and the lateral direction T <b> 1, T <b> 2 between the building component member 8 with the closing portion 18 a. The shock absorber 15 may be configured to be integrally held by the shock absorber holding portion 18b. Moreover, it is preferable to form the impact-absorbing-material holding part 18b as a recess which fits and holds the impact-absorbing material 15 integrally.

  When the peripheral member 18 is formed in this way, the shock absorber 15 is integrally provided by being fitted into the shock absorber holding portion 18b, and the peripheral member 18 is screwed to the building component 8 or the like. Attach with. As a result, the clearance can be blocked by the blocking portion 18a, and the shock absorber 15 can be easily interposed between the outer peripheral end portion 5a of the ceiling portion 5 and the lateral directions T1 and T2 of the building component 8. Become.

  As described above, when the suspended ceiling B is configured with the shock absorber 15 interposed between the outer peripheral end 5a of the ceiling 5 and the lateral directions T1 and T2 of the building component 8, When the suspended ceiling B rolls due to the horizontal force acting, the outer peripheral end 5a of the ceiling part 5 does not directly collide with the building component 8 and the shock absorber 15 is always in contact with the outer peripheral end 5a of the ceiling part 5. It is sandwiched between building component members 8. For this reason, the impact absorbing material 15 absorbs and relaxes the impact force, and the suspension ceiling B is prevented from rolling. That is, the vibration energy acting on the suspended ceiling B is attenuated. At this time, if a low-rebound material such as a low-repulsion elastic foam is used as the shock absorber 15, the impact force is surely absorbed and the roll of the suspended ceiling B is suppressed.

  Therefore, in the suspended ceiling structure B of the present embodiment, the shock absorber 15 is interposed between the end portion 5a of the ceiling portion 5 and the building component member 8 such as a wall, a column, or a beam. When the suspended ceiling structure B rolls due to a horizontal force acting during an earthquake, the end portion 5a of the ceiling portion 5 does not directly collide with the building structural member 8, and the impact absorbing material 15 absorbs the impact force and relaxes it. can do. Further, by absorbing the impact force by the impact absorbing material in this way, it is possible to suppress the rolling of the suspended ceiling structure (attenuate the vibration energy).

  Thereby, it is possible to prevent the ceiling material (ceiling panel) 6 from being damaged or falling off during an earthquake, and a loud sound is generated when the end 5a of the ceiling 5 hits the building component 8 during an earthquake. This collision sound can prevent fear of the building user and induce secondary disasters such as panic.

  Further, the shock absorbing material 15 can be easily interposed between the end 5a of the ceiling 5 and the building component 8 by sticking it to the end 5a of the ceiling 5 or the side surface of the building component 8. Compared with the case of installing a ceiling seismic control device such as a conventional viscoelastic damper or oil damper, it is possible to provide the suspended ceiling structure B with an excellent seismic performance at a low cost and with a high construction efficiency.

  Therefore, according to the suspended ceiling structure B of the present embodiment, by providing the shock absorbing material 15 between the end portion 5a of the ceiling portion 5 and the building component member 8, workability and economic efficiency are ensured. On the other hand, it is possible to prevent the ceiling material 6 from being damaged or dropped during an earthquake, and it is possible to provide excellent earthquake resistance.

  Further, in the suspended ceiling structure B of the present embodiment, by using a low-repulsive material such as low-resilience urethane foam as the shock absorbing material 15, the impact force is reliably absorbed, and the suspended ceiling structure B rolls during an earthquake. Can be suppressed, and the ceiling material 6 can be prevented from being damaged or dropped off. In addition, the low resilience material is inexpensive and can be easily attached between the end 5a of the ceiling 5 and the building component 8 by being attached to the end 5a of the ceiling 5 or the side surface of the building component 8. Therefore, it is possible to provide excellent seismic performance while ensuring workability and economy.

  Further, for example, in order to ensure the design of the ceiling part 5 on the outer peripheral end part 5a side, and the peripheral edge attached to close the clearance provided between the outer peripheral end part 5a of the ceiling part 5 and the building component 8 Since the members 17 and 18 are configured integrally with the shock absorber 15, the peripheral members 17 and 18 are attached to the outer peripheral end 5 a of the ceiling portion 8 and the building component 8, and the shock absorber is easily provided. 15 can be interposed between the end 5 a of the ceiling 5 and the building component 8. That is, it is possible to attach the peripheral members 17 and 18 and easily impart seismic performance.

  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 suspended ceiling structure B is configured by providing the shock absorbing material 15 between the outer peripheral end portion 5a of the ceiling portion 5 and the building component 8. On the other hand, as shown in FIG. 7, for example, an end 5 a of an opening 5 b formed in the ceiling 5 to install the ceiling-related equipment 19 such as lighting and an air conditioner, and the ceiling-related equipment 19 The suspended ceiling structure B may be configured with an impact absorbing material 15 interposed therebetween.

  In this case, as in the present embodiment, when the suspended ceiling structure B rolls due to a horizontal force acting during an earthquake, the open end 5a of the ceiling 5 directly collides with the ceiling accessory 19. Without impact, the impact absorbing material 15 can absorb and mitigate the impact force. Moreover, it becomes possible to suppress the rolling of the suspended ceiling structure B by absorbing the impact force with the impact absorbing material.

  As a result, the ceiling material 6 can be prevented from being damaged or dropped out during an earthquake, and a large noise is generated when the end portion 5a of the ceiling portion 5 hits the ceiling-attached equipment 19 during the earthquake. It can prevent the sound from inciting the user of the building and inducing secondary disasters such as panic. Further, the shock absorber 15 is easily attached between the end portion 5a of the ceiling portion 5 and the ceiling portion auxiliary equipment 19 by sticking it to the end portion 5a of the ceiling portion 5 or the side surface of the ceiling portion auxiliary equipment 19. Compared to the installation of ceiling seismic control devices such as conventional viscoelastic dampers and oil dampers, the construction efficiency is low, and the suspended ceiling structure B can be provided with excellent seismic performance at low cost. Become.

  Further, the shock absorber 15 is interposed between the end portion 5a of the ceiling portion 5 of the existing suspended ceiling structure and the building component 8 and / or the ceiling-attached equipment 19, so that the present invention is installed in the existing suspended ceiling structure. You may make it apply to earthquake-resistant repair of. In this case, it is possible to impart excellent seismic performance to the existing suspended ceiling structure simply by installing the shock absorber 15.

1 Field Edge 2 Field Edge Receiver 3 Superstructure 4 Suspension Member (Suspension Bolt)
5 Ceiling part 5a End part 5b Opening part 6 Ceiling material (ceiling panel)
7 Ceiling base 8 Building component 10 Field edge fitting (clip)
11 Hanging member connection bracket (hanger)
15 Shock absorber 16 Mounting tool 17 Edge member 17a Fitting recess 17b Shock absorber holding part 18 Edge member 18a Closure part 18b Shock absorber holding part 19 Ceiling accessory A Conventional suspended ceiling structure B Suspended ceiling structure T1 Horizontal direction (one direction)
T2 lateral direction (other direction)
T3 vertical direction

Claims (3)

A suspended ceiling comprising a field receiver that is suspended and supported by a superstructure of a building via a suspension member, a field edge that is attached to the field edge receiver, and a ceiling material that is attached to the field edge and forms a ceiling portion. In structure
An impact absorbing material is interposed between the end portion of the ceiling portion and the building component and / or the ceiling portion incidental equipment disposed in the lateral direction of the end portion of the ceiling portion. Characteristic suspended ceiling structure. The suspended ceiling structure according to claim 1,
A suspended ceiling structure, wherein the shock absorbing material is a low-rebound material. The suspended ceiling structure according to claim 1 or 2,
A peripheral edge member that forms a peripheral edge of a suspended ceiling structure is provided on the outer peripheral end of the ceiling and / or the building component.
The suspended ceiling structure, wherein the peripheral member is integrally provided with the shock absorbing material.

Images