JP2015031012A - Suspended ceiling structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suspended ceiling structure that can easily and securely improve earthquake performance by installing a tension material at a ceiling part while preventing interference with suspension hardware which supports by suspension an object to be suspended which is installed below the ceiling part.SOLUTION: A suspended ceiling structure includes: a tension material 11 which is sectioned substantially in a channel shape having a pair of side wall parts 11a and a connection part 11b and also formed in a bar-like shape, and extended in one direction T1 and/or the other direction T2 below a ceiling material 6 and along a ceiling surface; and suspension hardware 12 which is suspended penetrating the ceiling material 6 while having its one end connected to a ceiling substrate 7, and supports an object 13 to be suspended by suspension. Tension material connecting hardware 17 for arranging a plurality of tension materials 11 linearly by mutually connecting end parts 11c thereof includes: a connection plate part 17a which is fixed to side wall parts 11a of one tension material 11 and the other tension material 11; and a suspension hardware insertion hole 19 which communicates with a gap between the end parts 11c of the one tension material 11 and the other tension material 11 and into which the suspension hardware 12 is inserted.

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 is, for example, as shown in FIG. 4, a plurality of field edges 1 arranged in parallel at a predetermined interval in one horizontal direction T1, and perpendicular 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 attached to the upper structure 3 (building frame) 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 a ceiling panel (ceiling material) 6 forming a ceiling surface (ceiling part 5).

  Further, as shown in FIG. 5, for example, 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.

  On the other hand, the suspension ceiling A formed by supporting the ceiling base 7 and the ceiling panel 6 composed of the field edge 1 and the field edge receiver 2 and the T bar 8 with the suspension bolts 4 acts on the structure in the event of an earthquake. Easy to roll due to 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 during an earthquake is suppressed (see FIG. 5).

  However, when performing seismic reinforcement or seismic retrofit by the reinforcing brace 10, it is necessary to perform an installation work by an operator entering the ceiling space H. 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. 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 in which a tensile material (reinforcing grid member) 11 having a substantially inverted U-shaped cross section, such as channel steel, is disposed below the ceiling portion 5 and along the ceiling portion 5. In the (grid support method), the ceiling part 5 can be made to behave integrally with the building housings 3 and 9 by the tension member 11 during an earthquake, and the shaking of the ceiling part 5 can be suppressed.

  In addition, by fixing the middle part of the tension member 11 to the ceiling member 6 and / or the ceiling base 7 from below the ceiling part 5 using a connection fixing means such as a screw, the inside of the ceiling back space H is installed when the tension member 11 is installed. It is possible to eliminate the need for work at the work site, 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, when the width dimension (the length dimension in one direction T1) and the depth dimension (the length dimension in the other direction T2) of the ceiling portion 5 are large, a plurality of channel steels or the like are pulled using connection hardware. The ends of the material 11 are connected to each other, and the tensile material 11 extending linearly with a predetermined length in one direction T1 or the other direction T2 is formed.

  On the other hand, in this type of suspended ceiling, the ceiling panel 6 is penetrated from the ceiling surface side, and is suspended and supported by a hanging metal object whose upper end is connected to the ceiling base 7. There are many cases in which the is installed on the room side.

  Then, there is a case in which it is difficult to install the tension material 11 at a desired mounting position because the hanging material for hanging and supporting the object to be suspended interferes with the tension material 11. .

  In view of the above circumstances, the present invention can easily and reliably install a tension member on a ceiling while preventing interference with a hanging hardware that supports a suspended object installed below the ceiling. An object of the present invention is to provide a suspended ceiling structure that can improve seismic performance.

  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 continuous portion that connects the upper ends of the pair of side wall portions is provided, is formed in a substantially bar shape with a substantially U-shaped cross section, and is orthogonal to the one direction and / or one direction below the ceiling material and along the ceiling surface. A tensile material that extends in the other direction and is arranged by connecting and fixing the connecting portion to the ceiling material and / or the ceiling base from below the ceiling material, and one end connected to the ceiling base. And a hanging hardware for hanging and supporting a suspended object at a predetermined position below the ceiling material, wherein the tensile material includes end portions of a plurality of tensile materials. Are connected to each other by using a tensile material connecting hardware, and the one direction and / or Is arranged in a straight line in the other direction, and the connecting member for securing the tensile material connecting hardware is fixed to the side wall of one tensile material and the side wall of the other tensile material for connecting the ends. And a hanging object insertion hole that is communicated with a gap between the end portion of the one tensile material and the end portion of the other tensile material and through which the hanging object is inserted. To do.

  In the suspended ceiling structure of the present invention, a connecting plate portion for fixing a tensile material connecting hardware for connecting ends of a plurality of tensile materials to a side wall portion of one tensile material and a side wall portion of the other tensile material, By providing a hanging object insertion hole for inserting a hanging object, one tension member and the other tension member can be reliably connected to each other at the connecting plate portion, and thus one of the tension members can be connected. In the state where the other tension member is connected, the suspension member having one end connected to the ceiling base through the suspension member insertion hole can be inserted below and suspended from the ceiling member.

  Thereby, for example, when installing a suspended object such as a line lighting or a decoration on the room side below the ceiling material using a hanging hardware, the hanging hardware and the tensile material do not interfere with each other as in the past. In order to suspend the hanging hardware, it is possible to eliminate the need to separately form an insertion hole in a ceiling material or a tensile material.

  Therefore, according to the suspended ceiling structure of the present invention, it is easy to install a tension material on the ceiling while preventing interference with the hanging hardware that supports the suspended object installed below the ceiling. In addition, it is possible to reliably improve the earthquake resistance.

In the suspended ceiling structure which concerns on one Embodiment of this invention, it is a sectional side view which shows the state which connected the edge parts of the tension | tensile_strength using the metal for tension | tensile_strength connection. In the suspended ceiling structure which concerns on one Embodiment of this invention, it is a top view from the bottom which shows the state which connected the edge parts of the tension | tensile_strength using the metal for tension | tensile_strength connection. It is a perspective view which shows the tension | tensile_material connection metal fitting of the suspended ceiling structure which concerns on one Embodiment of this invention. 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 which installed the tension | tensile_strength material in the ceiling part and improved earthquake-resistant performance (it is a perspective view which shows the suspended ceiling structure which concerns on one Embodiment of this invention).

  Hereinafter, a suspended ceiling structure according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3 and FIG. 6. 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. 6, 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.

Moreover, in this suspended ceiling C, as shown in FIG. 1, the upper end part (one end) is connected to the ceiling base 7, and the hanging hardware 12 suspended through the ceiling material 6 (ceiling part 5), A hanging object 13 such as a line illumination or a decoration provided connected to the lower end side of the hanging hardware 12 is integrally provided. Furthermore, in the present embodiment, a plurality of hanging hardware 12 are provided with a predetermined interval in the extending direction of the field edge 1 with the upper end connected to the ceiling base 7 (field edge 1).
Note that the hanging hardware 12 may be suspended from the ceiling material 6 while connecting the upper end portion thereof to the upper structure 3 or other members of the building instead of the ceiling base 7.

  Moreover, in the suspended ceiling C of this embodiment, as shown in FIG.6, FIG1 and FIG.2, the outer peripheral edge part 5a of the ceiling part 5 of the ceiling back space H between the ceiling part 5 and the upper structure 3 of a building. The upper side is connected to the upper structure 3 on the side, that is, the building component (building frame) 9 side such as a wall, a pillar, or a beam in the ceiling space H, and the bundle 15 extends in the vertical direction T3 (hangs vertically) ) 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.

  Further, in the suspended ceiling C of the present embodiment, a substantially rod-shaped tensile material (reinforcing grid member) 11 is disposed below the ceiling portion 5 and horizontally along the lower surface (ceiling surface) of the ceiling portion 5. Has been. 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 pair of side wall portions 11a. It is formed in a shape (substantially inverted U-shaped cross section).

  Further, the tension member 11 is provided by fixing its intermediate portion from below the ceiling portion 5 to the ceiling material 6 (ceiling portion 5) and the field edge 1 of the ceiling base 7 by a connection fixing means such as a tapping screw. 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, according to the width dimension (length dimension of one direction T1) and the depth dimension (length dimension of the other direction T2) of the ceiling part 5, the tension | tensile_strength-material attachment 17 is used. The ends 11c of the tensile members 11 such as a plurality of channel steels are connected to each other, and the tensile members 11 are linearly arranged with a predetermined length in one direction T1 and the other direction T2.

  In this embodiment, as shown in FIGS. 1 to 3, the tensile material connecting hardware 17 for connecting the end portions 11 c of the tensile material 11 is formed of one tensile material 11 and the other tensile material 11. A pair of side walls of one tensile member 11 and the other tensile member 11 is installed by being overlaid on the pair of side wall portions 11a and fixed by inserting bolts 18 into bolt insertion holes formed in the respective side wall portions 11a. A pair of flat connecting plate portions 17a for connecting the portions 11a to each other and an upper end portion on one end side and / or the other end side of the pair of connecting plate portions 17a so as to be orthogonal to the connecting plate portion 17a. And is provided with a flat stiffening portion 17b disposed so as to be overlapped with each connecting portion 11b of the other tensile material 11.

  In other words, the tensile material connecting hardware 17 of the present embodiment includes a pair of flat plate-like connecting plate portions 17a disposed at a predetermined interval, and one end side and / or the other end side of the connecting plate portion 17a. A pair of flat stiffening portions 17b connected to the upper end portion and disposed orthogonal to the connection plate portion 17a, and between the pair of stiffening portions 17b, the end portion 11c of one tensile member 11 Is formed with a hanging object insertion hole 19 through which the hanging object 12 is inserted.

  Furthermore, in this embodiment, as shown in FIG. 3, the tensile member connecting hardware 17 is connected to one connecting plate portion 17a and one stiffening portion 17b connected to the upper end portion on one end side of the one connecting plate portion 17a. The other tensile material connecting hardware piece 17c, comprising the other connecting member 17c and the other connecting plate portion 17a and the other stiffening portion 17b connected to the upper end of the other connecting plate portion 17a. It is divided into two tensile material connecting hardware pieces 17c and 17d.

  In the suspended ceiling C of the present embodiment, one tensile material connecting hardware piece 17c is placed on one side wall portion 11a of one tensile material 11 and one side wall portion 11a of the other tensile material 11, and the other tensile material. The connecting metal piece 17c is installed on the other side wall portion 11a of the one tension member 11 and the other side wall portion 11a of the other tension member 11 by joining with bolts. As a result, the end portions 11 c of the tensile material 11 are firmly connected by the tensile material connecting hardware 17.

  Further, when the tensile material connecting hardware 17 is attached in this manner, the hanging hardware is provided between the stiffening portion 17b of one tensile material connecting hardware piece 17c and the stiffening portion 17b of the other tensile material connecting hardware piece 17d. An insertion hole 19 is formed. For this reason, the hanging object 12 can be inserted into the hanging object insertion hole 19 to support the hanging object 13 such as line illumination or decoration.

  Therefore, in the suspended ceiling structure C of the present embodiment, the tensile material connecting hardware 17 that connects the ends 11c of the plurality of tensile materials 11 is the side wall portion 11a of one tensile material 11 and the side wall of the other tensile material 11. By providing the connecting plate portion 17a fixed to the portion 11a and the hanging piece insertion hole 19 for inserting the hanging piece 12, the connecting plate portion 17a allows one tensile member 11 and the other tensile member 11 to be connected. In the state in which one tension member 11 and the other tension member 11 are connected in this manner, the suspension member 12 having one end connected to the suspension base insertion hole 19 and the ceiling base 7 can be connected to the ceiling member. It becomes possible to pass through 6 and hang down.

  Thereby, for example, when the suspended object 13 such as a line illumination or a decoration is installed on the room side below the ceiling material 6 using the suspended object 12, the suspended object 12 and the tension material 11 interfere with each other as in the conventional case. Therefore, it is not necessary to make a separate insertion hole in the ceiling material 6 or the tension material 11 in order to suspend the hanging hardware 12.

  Therefore, according to the suspended ceiling structure C of the present embodiment, the tension member 11 is attached to the ceiling portion while preventing interference with the hanging hardware 12 that suspends and supports the suspended object 13 that is installed below the ceiling portion 5. It is possible to improve seismic performance easily and reliably.

  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.

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 11c End part 12 Hanging object 13 Hanging object 15 Bundling material 16 Connection material 17 Tensile material connection metal 17a Connection board part 17b Stiffening part 17c One tension material connection Hardware piece 17d The other tensile material connecting hardware piece 18 Bolt 19 Hanging hardware insertion hole A Conventional suspended ceiling structure B Conventional suspended ceiling structure C Suspended ceiling structure H Ceiling space T1 Lateral 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,
It is provided with a pair of side wall portions and 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 arranged in one direction and / or along the ceiling surface below the ceiling material. Or a tensile material that extends in another direction orthogonal to one direction and is connected and fixed to the ceiling material and / or the ceiling base from below the ceiling material, and
One end is connected to the ceiling base, and is suspended through the ceiling material, and includes a hanging hardware for supporting a suspended object at a predetermined position below the ceiling material,
The tensile material is connected to the ends of a plurality of tensile materials using a tensile material connecting hardware, and is arranged linearly in the one direction and / or the other direction,
The tensile material connecting hardware is connected to the side wall portion of one tensile material connecting the end portions to the side wall portion of the other tensile material, the end portion of the one tensile material, and the other side of the other tensile material. A suspended ceiling structure, characterized in that the suspended ceiling structure is provided with a suspended object insertion hole that communicates with a gap between the ends of the tensile member and into which the suspended object is inserted.

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