JP6264600B2 - Suspended ceiling structure - Google Patents

Description

  The present invention relates to a suspended ceiling structure.

  Conventionally, for example, 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, for example, a plurality of field edges 1 arranged in parallel in a horizontal direction T1 at a predetermined interval, 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. 4, 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 acting 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. 4).

  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.

  On the other hand, the applicant of the present application, for example, as shown in FIG. 5, has a substantially bar shape with a substantially inverted U-shaped cross section such as a grooved steel, for example, below the ceiling portion 5 and laterally along the ceiling portion 5. Tensile material 11 is provided, both ends of the tensile material 11 are connected to the building housings 3 and 9, respectively, and an intermediate portion is provided from below the ceiling portion 5 to the ceiling material 6 and / or the ceiling base 7 such as tapping screws. The suspended ceiling structure B, which is connected and fixed by the connection fixing means, was invented, and a patent application (Japanese Patent Application No. 2013-016019) has already been filed for this invention.

  In this way, a suspended ceiling structure B (grid support) in which a substantially rod-shaped tensile material (stiffener, reinforcing grid member) 11 such as groove steel is disposed below the ceiling portion 5 and along the ceiling portion 5 is provided. In the construction method), at the time of an earthquake, the ceiling part 5 can be made to behave integrally with the building housings 3 and 9 by the tension member 11, and the shaking of the ceiling part 5 can be suppressed.

  Further, the intermediate part of the tension member 11 is fixed to the ceiling member 6 and / or the ceiling base 7 from below the ceiling part 5 by using a connection fixing means such as a screw, so that when the tension member 11 is installed, the ceiling The work in the space H can be made almost unnecessary, and the workability can be greatly improved.

  Thus, even when the tensile material 11 is attached to the existing suspended ceiling structure A to improve the earthquake resistance, a dangerous work in the ceiling space H is unnecessary, and the inside of the ceiling space H is not required. The inconvenience that there is a range in which construction cannot be performed due to the clearance with the incidental equipment provided in the building and the building housing 3 can be solved, and the required construction period can be shortened and the cost can be reduced.

  In addition, maintenance of ceiling-related facilities such as air conditioners and lighting can be easily performed after the earthquake-resistant repair. Furthermore, whether the JIS material or the general material is used for the field edge 1, the field edge receiver 2, the T-bar 8, etc. of the ceiling base 7, and whether it is a newly installed or existing suspended ceiling structure, the ceiling material It is possible to cope with any material 6, and it is possible to reliably improve the seismic performance.

JP 2008-121371 A JP 2005-350950 A

  Here, in a suspended ceiling structure installed in a lattice shape on the ceiling surface as a tensile material (stiffener, reinforcing grid member), the tensile material is a pair of side walls such as channel steel and the upper ends of the pair of side walls. They are connected to each other and provided with a continuous portion fixed to a ceiling material or a ceiling base, and are formed in a substantially bar shape with a substantially inverted U-shaped section (substantially U-shaped section).

  For this reason, when a tensile material is installed and the suspended ceiling structure is subjected to seismic retrofit, the pair of side walls of the tensile material protrudes downward from the ceiling surface, and the ceiling of the suspended ceiling structure is formed by the pair of side walls. The appearance of the surface may be impaired.

  In other words, there has been a strong demand for a method for effectively using a pair of side wall portions protruding when a tensile material having a substantially U-shaped cross section is installed without causing deterioration in design.

  In view of the above circumstances, the present invention deteriorates in design even when a tensile material having a substantially bar-shaped cross section (substantially inverted U-shaped cross section) and a substantially rod-like tension member is fixed to a ceiling material or a ceiling base. It is an object of the present invention to provide a suspended ceiling structure that makes it possible to effectively use a tensile material without incurring any problems.

  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. Provided with a continuous portion connecting the upper ends of the pair of side wall portions, is formed in a substantially bar shape with a substantially U-shaped cross section, and is disposed laterally below the ceiling material and along the ceiling surface, A tensile material is provided to connect and fix the continuous portion to the ceiling material and / or the ceiling base from below the ceiling material, and is surrounded by a pair of side wall portions and the continuous portion of the tensile material. Ancillary equipment that is housed in an internal space and provided integrally with the tensile material is provided , and the tensile material is connected to the building frame directly or indirectly .

  In the suspended ceiling structure of the present invention, a tensile material (stiffening material) provided with a pair of side wall portions and a continuous portion and having a substantially U-shaped cross section and formed in a substantially rod shape is used as a ceiling material and / or from below the ceiling material. By connecting and fixing to the ceiling base, it is possible to reliably and effectively suppress the rolling of the suspended ceiling structure during an earthquake.

  Thereby, it can prevent that the edge part of the ceiling part which consists of a ceiling base and a ceiling material collides with building frames, such as a wall, a pillar, and a beam, and a breakage | falling arises or a drop-off occurs in a ceiling material. That is, it is possible to realize a suspended ceiling structure with high reliability, and it is possible to perform seismic retrofit of the suspended ceiling structure with high reliability.

  Further, in the suspended ceiling structure of the present invention, as described above, in the internal space surrounded by the pair of side walls and the continuous portion of the tensile material for suppressing the shaking of the suspended ceiling structure during an earthquake, for example, lighting equipment (Such as lighting and wiring), air conditioning equipment (air outlets, ventilation openings, etc.), radiant air conditioning equipment, fire prevention equipment (sprinklers, piping, etc.), various sensors (temperature, smoke, human feeling, illuminance, etc.) It was designed to be integrated.

  Thereby, conventionally, a pair of side wall portions protrudes from the ceiling surface, and it is possible to effectively use a tensile material that may impair the appearance as an attachment member of various incidental facilities. Therefore, it is possible to increase the added value by improving the seismic performance and adding a high design function.

  In addition, there are many cases where it is necessary to replace the various incidental facilities installed in the suspended ceiling structure. In such a case, it is possible to remove the tensile material and replace the lighting equipment with this tensile material. Become. Thereby, it becomes possible to improve the workability at the time of changing the lighting.

It is a sectional side view which shows the suspended ceiling structure which concerns on one Embodiment of this invention. It is the X1-X1 arrow view figure of FIG. It is a perspective view which shows the conventional suspended ceiling structure. It is a perspective view which shows the conventional suspended ceiling structure. It is a perspective view which shows the suspended ceiling structure provided with the tension material.

  Hereinafter, a suspended ceiling structure according to an embodiment of the present invention will be described with reference to FIGS. 1, 2, and 5. Here, the present embodiment relates to a suspended ceiling structure used as a 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 cinecon.

  As shown in FIG. 5, the suspended ceiling (suspended ceiling structure) C of this embodiment includes a field edge 1, a field edge receiver 2, a suspension member (suspension bolt) 4, and a ceiling material 6.

  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 bracket (clip) at a portion intersecting with 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 to the field edge receiver 2 by using hanging member connecting brackets (hangers). 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 C, 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. A 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. ing.

  On the other hand, in the suspended ceiling C of the present embodiment, the outer peripheral end 5a side of the ceiling part 5 of the ceiling back space H between the ceiling part 5 and the upper structure 3 of the building, that is, the walls, pillars, On the side of a building component (building frame) 9 such as a beam, the upper end is connected to the upper structure 3 and a bundle 15 is extended (hanged down) in the vertical direction T3. A plurality of the bundle members 15 are provided at predetermined intervals in the direction along the outer peripheral end portion 5 a of the ceiling portion 5. And the connection material 16 extended in the horizontal direction T1 and T2 is connected to the lower end of these some bundle material 15, and the some bundle material 15 is integrally connected via this connection material 16. FIG. In the present embodiment, as the bundle member 15 and the connecting member 16, for example, a shape member such as an H-shaped steel, an I-shaped steel, a grooved steel, or a tube material such as a square steel pipe is used.

  Moreover, in the suspended ceiling C of this embodiment, as shown in FIG.1, FIG.2 and FIG.5, it has a substantially rod shape below the ceiling part 5, and horizontally along the lower surface (ceiling surface) of the ceiling part 5. Tensile members (reinforcing grid members) 11 (11a, 11b) are disposed. Further, the tensile material 11 is a grooved steel formed of, for example, an aluminum extruded shape steel or a steel member, and includes a pair of side wall portions 11a and a continuous portion 11b that connects the upper ends of the pair of side wall portions. It is formed in a substantially U-shape (substantially inverted U-shaped cross section).

  Further, the tension member (reinforcing grid member) 11 is fixed to the ceiling member 6 (ceiling part 5) and the ceiling base 7 of the field edge 1 from below the ceiling part 5 by connection fixing means 12 such as a tapping screw. Is provided. And in this embodiment, such a tension material 11 is arrange | positioned under the ceiling part 5 at the grid | lattice form (grid shape) of 900-2400 mm pitch, for example.

  Further, the tension member 11 is provided with one end and the other end connected to the connecting member 16 and connected to the bundle member 15 via the connecting member 16. That is, the tension member 11 of this embodiment is connected to the building frames 3 and 9 via the support members of the bundle member 15 and the connecting member 16. In addition, you may make it connect the tension | tensile_strength material 11 to the building structural members 9, such as a wall, a pillar, and a beam, using a fixture (it connects directly to a building frame). You may do it).

  Moreover, in the suspended ceiling C of this embodiment, as shown in FIG.1 and FIG.2, it surrounds with a pair of side wall part 11a and the connection part 11b of the tension | tensile_strength material (stiffening material) 11 installed as mentioned above. Housed in the inner space P, a lighting equipment (ancillary equipment) 17 such as wiring and lighting is provided integrally with the tension member 11. For example, it is desirable that a lid member is attached to the tension member 11 so that wirings and the like are not exposed in portions other than the illumination.

  And in the suspended ceiling C of this embodiment which consists of the said structure, the tension | tensile_strength material 11 arrange | positioned under the ceiling part 5 has one end part and the other end part through a bundle material 15 (attachment tool), and a building frame. Are connected to the ceiling member 6 and the field edge 1 so that the ceiling portion 5 is attached to the building housing 3 by the tension material 11 in the event of an earthquake. 9, and the shaking of the ceiling portion 5 is suppressed.

  Furthermore, in the suspended ceiling C of the present embodiment, the internal space P surrounded by the pair of side walls 11a and the connecting portion 11b of the tension member 11 for suppressing the shaking of the suspended ceiling structure C in the event of an earthquake is provided. Illumination equipment 17 such as illumination and wiring is provided integrally. For this reason, a pair of side wall part 11a protrudes from a ceiling surface, and does not impair an external appearance, Furthermore, it becomes possible to use effectively the tension | tensile_strength material 11 as an attachment member of the illuminating equipment 17. FIG.

  Accordingly, the suspended ceiling structure (suspended ceiling) C of the present embodiment is provided with a pair of side wall portions 11a and a connecting portion 11b, and is formed in a substantially rod shape with a substantially U-shaped cross section (substantially inverted U-shaped cross section). By connecting and fixing the tension member 11 to the ceiling member 6 and / or the ceiling base 7 from below the ceiling member 6, it is possible to reliably and effectively suppress the rolling of the suspended ceiling structure C during an earthquake.

  Thereby, it can prevent that the edge part 5a of the ceiling part 5 which consists of the ceiling foundation | substrate 7 and the ceiling material 6 collides with building housing | casing 9, such as a wall, a pillar, and a beam, and that a ceiling material 6 arises and a fall arises. . That is, it becomes possible to realize a suspended ceiling structure C with high reliability, and it is possible to perform seismic retrofit of the suspended ceiling structure C with high reliability.

  Further, in the suspended ceiling structure C of the present embodiment, the interior space P surrounded by the pair of side wall portions 11a and the continuous portion 11b of the tension member 11 for suppressing the shaking of the suspended ceiling structure C during an earthquake is illuminated or Since the lighting equipment 17 such as wiring is integrally provided, the pair of side wall portions 11a has conventionally protruded from the ceiling surface, and the tension member 11 that may impair the appearance is attached to the lighting equipment (accessory equipment) 17. Can be used effectively as Therefore, it is possible to increase the added value by improving the seismic performance and adding a high design function.

  Furthermore, there are many cases in which it is necessary to replace the lighting equipment (incidental equipment) 17 installed in the suspended ceiling structure C. In such a case, the tensile material 11 is removed, and the lighting equipment 17 together with the tensile material 11 is removed. It becomes possible to perform the refilling. As a result, it is possible to improve the workability at the time of lighting replacement, and it is also possible to save energy by using the fluorescent tube as an LED.

  Of course, it is also possible to replace the lighting equipment (supplementary equipment) 17 with the tensile material 11 as it is, or to attach the lighting equipment 17 to the tension material 11 attached in advance.

  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, 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 as in the present embodiment. For example, the suspension bolt 4 is suspended and supported by a suspension bolt (suspending member) 4 and arranged in parallel in a horizontal direction T1 with a predetermined interval and in another direction T2 orthogonal to the one direction T1. The ceiling base 7 may be configured to include a plurality of extending T-bars (inverse T-shaped support members). That is, the present invention does not need to limit the configuration of the ceiling foundation.

  Moreover, although this embodiment demonstrated that the incidental equipment which concerns on this invention was a lighting installation, the incidental equipment which concerns on this invention does not need to be limited to a lighting installation, and installs in the ceiling part 5. FIG. Any equipment that requires For example, as ancillary equipment according to the present invention, in addition to lighting equipment (lighting, wiring, etc.), air conditioning equipment (air outlets, ventilation openings, etc.), radiation air conditioning equipment, fire prevention equipment (sprinklers, piping, etc.), various sensors (temperatures) Smoke, human feeling, illuminance, etc.). And even if it is a case where facilities other than such illumination equipment are made into incidental equipment, it is possible to obtain the effect similar to this embodiment.

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)
DESCRIPTION OF SYMBOLS 10 Reinforcement brace 11 Tensile material 11a Side wall part 11b Connection part 12 Connection fixing means 15 Bundle material 16 Connection material 17 Illumination equipment (incidental equipment)
A Conventional suspended ceiling structure B Conventional suspended ceiling structure C Suspended ceiling structure H Ceiling back space T1 Horizontal direction (one direction)
T2 lateral direction (other direction)
T3 vertical direction

Claims (1)

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 pair of side wall portions and a continuous portion that connects the upper ends of the pair of side wall portions are provided, are formed in a substantially bar shape with a substantially U-shaped cross section, and are arranged in the lateral direction below the ceiling material and along the ceiling surface. And provided with a tensile material disposed by connecting and fixing the connecting portion to the ceiling material and / or the ceiling base from below the ceiling material,
Ancillary equipment that is housed in an internal space surrounded by a pair of side walls and a continuous portion of the tensile material and provided integrally with the tensile material ,
The suspended ceiling structure is characterized in that the tensile material is directly or indirectly connected to the building frame .

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