JP2013181342A - Ceiling substrate structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ceiling substrate structure which is capable of maintaining sufficient strength even when an operator walks on a ceiling backing material to perform an inspection/repair, and is excellent in an aseismatic performance.SOLUTION: The ceiling substrate structure comprises many hollow metal rectangular tube 1, 1... that are arranged in parallel at a prescribed interval and many metal rectangular tubes 2, 2... that are orthogonal to the metal rectangular tubes 1, 1... and are arranged in parallel at a prescribed interval, and is configured to suspend the metal rectangular tubes 1, 1... or 2, 2... using suspension bolts 3, 3... from a structure 26 of a building. To the metal rectangular tubes 1, 1..., a beam member 7 composed of a metal rectangular tube that is orthogonal to the metal rectangular tubes 1, 1... and extends from end to end of a room is attached through an attaching metal fitting 8, so that an operator can walk at ease on the metal rectangular tubes 1 and the beam member 7, and even though shaking occurs simultaneously in a longitudinal direction when an earthquake occurs, the shaking in the longitudinal direction can be coped with.

Description

  The present invention relates to a ceiling foundation structure, and more particularly to a ceiling foundation structure with improved seismic performance.

  A conventional ceiling foundation structure consists of a field edge and a field edge orthogonal to the field edge, supported by hanging from the building structure with suspension bolts. In some cases, the seismic resistance is enhanced by connecting them with the other member (see, for example, Patent Document 1).

JP 2008-50784 A

  By the way, in the case of the ceiling foundation structure disclosed in Patent Document 1, the ceiling finishing board is attached to the field edge with a dedicated screw. On the ceiling, lighting fixtures and air conditioners are suspended from the building structure with suspension bolts, etc., and attached to the ceiling opening at the same height as the ceiling finish board surface. The workers are to inspect and repair lighting fixtures and air-conditioning equipment by looking through the ceiling through the ceiling inspection port, but there are many lighting fixtures on the ceiling, such as theaters, halls, gymnasiums, factories, etc.・ If there are air conditioners, etc., the ceiling will be high enough for people to walk, and a catwalk will be provided for inspection and repair. However, since the catwalk is not installed so as to cover all the ceiling surfaces, there are cases in which workers are unavoidably inspected and repaired on a conventional ceiling base material. The conventional ceiling base material does not have a load-bearing structure that allows people to ride on the field edge, so a hanger fitting that connects the suspension bolt and the field edge or field edge receiver can be opened, There is a possibility that an accident occurs in which the edge of the rim falls and the ceiling surface becomes rattled, or in the worst case, the ceiling base material and the ceiling finishing board fall.

  Therefore, a suspended ceiling structure called a grape shelf in which pre-formed square steel is suspended from the building structure and arranged at regular intervals is adopted so that a plurality of people can ride. Even with such a suspended ceiling structure, there may be a problem with vibration resistance against severe shaking such as an earthquake.

  In order to cope with the above problems, as disclosed in the above-mentioned Patent Document 1, the suspension bolts are supported by being suspended from the structure of the building with the suspension bolts, and the adjacent suspension bolts are connected to the brace material (a brace-like member). ), It is considered that the vibration resistance is strengthened, but the one disclosed in Patent Document 1 uses a C-shaped section steel (channel steel) as a brace material. Therefore, the strength against shaking at the time of earthquake occurrence is not enough, and there was a limit to strengthening earthquake resistance. Further, depending on the structure of the connecting portion between the brace material and the suspension bolt, there may be a case where sufficient vibration resistance cannot be obtained.

  By the way, at the time of earthquake occurrence, it shakes simultaneously in the vertical direction (that is, the X direction) and the horizontal direction (that is, the Y direction), but in the case of the vine shelf, one of the intersecting members has a weaker rigidity than the other. Therefore, when it is made an earthquake-resistant structure (for example, a structure in which an oblique reinforcing member is attached) to both of the intersecting members, an excessive load is applied to one member (weaker member), and a sufficient effect is obtained. There are cases where it cannot be obtained.

  The present invention was made in order to solve the above-described problems, and even when an operator walks and inspects and repairs on the ceiling base material, it can maintain a sufficient strength and has an earthquake resistance performance. It was made for the purpose of providing an excellent ceiling foundation structure.

  In the present invention, as a first means for solving the above-described problems, a number of hollow metal square tubes 1, 1. And a plurality of metal square tubes 2, 2... Arranged in parallel at a predetermined interval, and the metal square tubes 1, 1. In the ceiling foundation structure configured to hang from the structure 26, the metal rectangular cylinders 1, 1,... Are orthogonal to the metal rectangular cylinders 1, 1,. A beam member 7 made of a metal square tube reaching the end is attached via a mounting bracket 8.

  By configuring as described above, the worker can walk on the metal rectangular tube 1 and the beam member 7 with peace of mind, and simultaneously shakes in the left-right direction when an earthquake occurs, which corresponds to this left-right shake. be able to.

  In the present invention, as a second means for solving the above-mentioned problems, a number of hollow metal rectangular tubes 1, 1. And a plurality of metal rectangular tubes 7, 7,... Arranged in parallel at a predetermined interval, and the metal square tubes 1, 1,. In the ceiling foundation structure configured to be suspended from the structure 26, the metal rectangular cylinders 7, 7,... Are constituted by beam members extending from the end of the room to the end, and the metal rectangular cylinder 1 , 1 and the beam member 7 are attached to each other via a mounting bracket 8.

  By configuring as described above, the worker can walk on the metal rectangular tube 1 and the beam member 7 with peace of mind, and simultaneously shakes in the left-right direction when an earthquake occurs, which corresponds to this left-right shake. be able to. In addition, the metal rectangular cylinder 7, which is orthogonal to the metal rectangular cylinders 1, 1,..., Is composed of a beam member extending from the end of the room to the end, so that the metal rectangular cylinders 1, 1,. It becomes possible to omit a member orthogonal to the, and cost can be reduced.

  In the present invention, as a third means for solving the above problems, in the ceiling foundation structure provided with the first means, the metal rectangular tubes 1, 1. The upper end of the selected one of the suspension bolts 3, 3,... Or the building structure 26 can be connected to each other by diagonal reinforcing members 20 and 20 each made of a hollow metal square tube, In this case, when the earthquake occurs by being connected to the rectangular metal cylinders 1, 1,..., 2, 2,. As a result, it will be possible to sufficiently cope with the left and right vibrations, and the seismic performance will be further improved.

  In the present invention, as a fourth means for solving the above-described problem, in the ceiling foundation structure provided with the second means, the metal square tubes 1, 1... And the beam member 7 and the suspension member are provided. The upper end of a selected one of the bolts 3, 3... Or the building structure 26 can be connected to each other by diagonal reinforcing members 20 and 20 each made of a hollow metal square tube. When configured, it can sufficiently cope with the left and right shaking in the event of an earthquake, and the earthquake resistance is further improved.

  In the present invention, as a fifth means for solving the above-mentioned problem, in the ceiling foundation structure provided with the first, second, third or fourth means, the mounting bracket 8 is replaced with the beam member. A first holding metal fitting 8a having a U-shaped cross-section that holds 7 and a second holding that is integrally extended from both lower ends of the first holding metal fitting 8a and holds each of the metal rectangular tubes 1 It can also comprise with the metal fitting 8b, and when it comprises in that way, the orthogonal part of the orthogonal metal square cylinders 1 and 1 and the beam member 7 can be couple | bonded firmly.

  According to the first means of the present invention, a number of hollow metal rectangular tubes 1, 1... Arranged in parallel at predetermined intervals and parallel to the metal rectangular tubes 1, 1. It is composed of a large number of metal square tubes 2, 2..., And the metal square tubes 1, 1..., 2, 2,... Are suspended from the building structure 26 using suspension bolts 3, 3,. In the ceiling base structure configured to be lowered, the metal square tubes 1, 1... Are made of metal that is orthogonal to the metal square tubes 1, 1. Since the beam member 7 made of a square tube is attached via the mounting bracket 8, the worker can walk on the metal square tube 1, 1,. Although it shakes in the direction at the same time, there is an effect that it is possible to cope with this left-right shaking.

According to the second means of the present invention, a number of hollow metal rectangular tubes 1, 1... Arranged in parallel at predetermined intervals and parallel to the metal rectangular tubes 1, 1. It is made up of a large number of metal rectangular tubes 7, 7,... That are suspended from a building structure 26 using suspension bolts 3, 3,. In the ceiling foundation structure configured to be lowered, the metal square tube 7 is constituted by a beam member extending from the end of the room to the end, and the metal square tube 1, 1,. Is attached via the mounting bracket 8 so that the worker can safely walk on the metal rectangular tubes 1, 1... And the beam member 7, and simultaneously shakes in the left-right direction when an earthquake occurs. However, there is an effect that it is possible to cope with the shaking in the left-right direction. In addition, the metal rectangular cylinder 7, which is orthogonal to the metal rectangular cylinders 1, 1,. It is possible to omit a member orthogonal to the structure, and there is an effect that the cost can be reduced.

  As in the third means of the present invention, in the ceiling foundation structure provided with the first means, the metal rectangular tubes 1, 1,..., 2, 2,. When the upper end portion of the selected one or the structure 26 of the building is connected to each other by the diagonal reinforcing members 20 and 20 made of a hollow metal square tube, they are orthogonal to form the ceiling foundation structure. By being connected to the metal square cylinders 1, 1,..., 2, 2,. As a result, the seismic performance is further improved.

  As in the fourth means of the present invention, in the ceiling foundation structure provided with the second means, among the metal square tubes 1, 1... And the beam member 7 and the suspension bolts 3, 3,. If the upper end of the selected one or the building structure 26 is connected to each other by diagonal reinforcing members 20 and 20 made of hollow metal square cylinders, the horizontal shaking at the time of the occurrence of an earthquake will occur. The seismic performance is further improved.

  As in the fifth means of the present invention, in the ceiling foundation structure provided with the first, second, third, or fourth means, the mounting bracket 8 is held in a U-shaped cross section for holding the beam member 7. A first holding metal fitting 8a having a shape and a second holding metal fitting 8b extending integrally from both lower ends of the first holding metal fitting 8a and holding the respective metal rectangular tubes 1, The orthogonal part of the orthogonal metal square tube 1 and the beam member 7 can be firmly coupled.

1 is an overall perspective view showing a ceiling foundation structure according to a first embodiment of the present invention. It is an expansion perspective view which shows the attachment state of the diagonal reinforcement member in the ceiling base structure shown in FIG. It is an expansion perspective view which shows the connection structure of the vertical metal square cylinder and the horizontal metal square cylinder in the ceiling foundation structure concerning 1st Embodiment of this invention. It is an expansion perspective view which shows the connection structure of the metal square cylinder and beam member of the vertical direction in the ceiling foundation structure concerning 1st Embodiment of this invention. It is an expansion perspective view which shows the structure of the metal square cylinder in the ceiling foundation structure concerning 1st Embodiment of this invention, a beam member, and a diagonal reinforcement member. It is an expansion perspective view which shows the lower fixing metal fitting in the ceiling base structure concerning 1st Embodiment of this invention. It is an expansion perspective view which shows the upper fixing metal fitting in the ceiling base structure concerning 1st Embodiment of this invention. The expansion front which shows the attachment site | part of the vertical metal square cylinder to which the diagonal reinforcement member is attached in the ceiling base structure concerning 1st Embodiment of this invention, and the horizontal metal square cylinder orthogonal to this FIG. The expansion side surface which shows the attachment site | part of the vertical metal square cylinder to which the diagonal reinforcement member is attached in the ceiling foundation structure concerning 1st Embodiment of this invention, and the horizontal metal square cylinder orthogonal to this FIG. (A), (B), and (C) are a vertical metal square tube to which an oblique reinforcing member is attached in the ceiling foundation structure according to the first embodiment of the present invention, and a horizontal direction perpendicular thereto. It is an expansion perspective view which shows three specific examples of the reinforcement board which reinforces an attachment site | part with a metal square cylinder. It is an expansion perspective view of the mounting bracket used for the coupling | bonding of the beam member and the metal square cylinder of the vertical direction in the ceiling foundation structure concerning 1st Embodiment of this invention. It is an expansion perspective view which shows the attachment state of the diagonal reinforcement member in the ceiling base structure concerning 2nd Embodiment of this invention.

  Hereinafter, several embodiments of the present invention will be described with reference to the accompanying drawings.

First Embodiment FIG. 1 to FIG. 1 show a ceiling foundation structure according to a first embodiment of the present invention.

  As shown in FIG. 1 to FIG. 3, this ceiling base structure is orthogonal between a large number of hollow metal square tubes 1, 1. It is made up of a number of metal rectangular tubes 2, 2,... That are arranged in parallel at predetermined intervals, and the metal rectangular tubes 1, 1,. It is comprised so that it may suspend from the structure 26 of a building using. Further, the metal rectangular tubes 1, 1,..., 2, 2,... And the upper end portion of the selected one of the suspension bolts 3, 3,. They are connected by members 20 and 20, respectively.

  Further, in this ceiling foundation structure, the metal square cylinders 1, 1... Are perpendicular to the metal square cylinders 1, 1. The beam member 7 which consists of is attached via the attachment bracket 8 mentioned later (refer FIG. 4). This beam member 7 is provided to reinforce the grape shelf. Reference numeral 4 denotes a support member having a U-shaped cross section for supporting the end portions of the metal square tubes 1, 1... 5, a ceiling plate attached to the lower surface of the metal square tubes 2, 2. It is a channel orthogonal to the metal rectangular tubes 1, 1.

  As shown in FIG. 5, each of the metal square tubes 1 and 2, the beam member 7 and the diagonal reinforcing members 20 contacts the metal plate cut to a predetermined width at both corners. Thus, it is comprised by the hollow metal plate square cylinder comprised by bending in the shape of a square cylinder. One end portion of the metal plate is provided with an inverted J-shaped bent portion a that is bent inside the metal plate rectangular tube and further has its tip portion bent outward. The other end portion of the metal plate is provided with an inverted U-shaped bent portion b on the inside, and is formed as a corner-type connecting portion c that is continuously fitted and crimped to be continuous in the horizontal direction. Yes. And rib d which protrudes in a U-shape toward the inside from the base end of the inverted U-shaped bent part b in the corner type connecting part c is formed continuously in the horizontal direction. By comprising in this way, it becomes possible to select any four surfaces of a metal square cylinder as an opening formation part and a board sticking surface. Further, the corner-type connecting portion c can be prevented from coming off by the rib d, and the rigidity of the metal square tube can be enhanced.

  As shown in FIG. 2, each metal rectangular tube 1 is formed with an opening 12 continuous to a fitting insertion hole 11 through which the channel 6 is inserted. A fixed piece 13 that is close to 6 is attached. With this configuration, by attaching the fixing piece 13, the channel 6 can be easily and reliably assembled to the metal square tube 1.

  By the way, in this embodiment, as shown in FIGS. 2 to 4, the selected one of the metal rectangular tubes 1, 1..., 2, 2. The upper end portion of the selected one is connected by an oblique reinforcing member 20 made of a hollow metal square tube.

  As shown in FIGS. 2 to 4 and 6, the lower end portion of the suspension bolt 3 is supported by the metal rectangular tube 1 via a support fitting 25. The support metal fitting 25 is a downward U-shaped upper support metal fitting 25a screwed to the lower end of the suspension bolt 3 and an upward U-shape fixed with screws in a state of holding the metal square tube 1. The lower support bracket 25b is connected to the upper end of the lower support bracket 25b and the lower end of the upper support bracket 25a by a bolt 25c. A reinforcing plate 25d for preventing deformation of the upper fixing bracket 25b is interposed at a portion of the upper fixing bracket 25b where the suspension bolt 3 is screwed. If it does in this way, even if an excessive load is applied to the metal square tube 1, it is possible to prevent the upper fixing bracket 25b from being deformed.

  On the other hand, as shown in FIGS. 2 and 7, the upper end portion of the suspension bolt 3 is screwed to a box-shaped coupling bracket 23 attached to a lower horizontal piece 26a of an H-shaped steel 26 which is a building structure. Yes. The coupling fitting 23 is formed of a cylindrical body having a rectangular parallelepiped section. A cutout opening 23a into which the lower horizontal piece 26a of the H-shaped steel 26 is inserted is formed on one end side of the fitting 23, and the cutout opening 23a is formed in the cutout opening 23a. The inserted lower horizontal piece 26a is attached by fastening with a fastening bolt 23b screwed from the lower surface side of the coupling fitting 23. If it does in this way, the force which suspends the metal square cylinder 1 by the suspending bolt 3 will become strong, and it can ensure the vibration resistance at the time of the occurrence of an earthquake.

  As shown in FIG. 6, between the lower end portion of the diagonal reinforcing member 20 and the metal square tube 1, the screws 21b are held in a state where two opposing surfaces at the lower end portion of the diagonal reinforcing member 20 are held. , 21b,... Are provided with a lower fixing bracket 21 having a mounting means 21A provided with a pair of holding pieces 21a, 21a and a connecting means 21B connected to the metal rectangular tube 1. . In this case, the attachment means 21A is integrally connected by the holding pieces 21a, 21a and a connecting piece 21c that integrally connects the lower ends of the holding pieces 21a, 21a, while the connecting means 21B is A pair of holding pieces 21e, 21e attached with screws 21d, 21d,... In a state of holding the two opposing surfaces of the metal rectangular tube 1 and the upper ends of the holding pieces 21e, 21e are integrally connected. The connecting piece 21c is connected to the connecting piece 21f by a bolt 21g. If it does in this way, the joint strength of the lower end part of the diagonal reinforcement member 20 and the metal square cylinder 1 will be reinforce | strengthened significantly, and it will become the thing which was further excellent in earthquake resistance while being easy to mount.

  Next, the configuration of the upper fixing bracket 22 attached between the upper end portion of the oblique reinforcing member 20 and the upper end portion of the suspension bolt 3 in the present embodiment will be described.

  As shown in FIG. 7, it attaches between the upper end part of the said diagonal reinforcement member 20 and the upper end part of the said suspension bolt 3 in the state which hold | puffed the two opposing surfaces in the upper end part of the said diagonal reinforcement member 20 An upper fixing bracket 22 having an attachment means 22A having a pair of holding pieces 22a and 22a and a coupling means 22B to be coupled to the upper end of the suspension bolt 3 is interposed. As shown in FIG. 7, the fixing bracket 22 includes a mounting means 22A having a U-shaped cross section in which the upper ends of the holding pieces 22a and 22a are integrally connected by a connecting piece 22b, and an H-shaped steel which is a building structure. The lower end of the pair of holding pieces 22d and 22d screwed with bolts 22c and 22c to the opposite side surfaces of the coupling fitting 23 attached to the lower horizontal piece 26a is integrally connected by the connecting piece 22e. U-shaped coupling means It has become and a 2B, and is configured and the connecting piece 22e and the connecting piece 22b attached with bolts 22f.

  Next, a connection structure between both ends of the metal square tube 2 and the side surface of the metal square tube 1 will be described with reference to FIGS. 3 and 8 to 10.

  Both ends of the metal square tube 2 and the side surface of the metal square tube 1 are coupled to each other through a fixing bracket 27. The fixing bracket 27 has a base portion 27a fixed to the side surface of the metal rectangular tube 1 by screws 28, and is bent and extended perpendicularly in the same direction from both side ends of the base portion 27a. Are formed by a pair of holding portions 27b, 27b fixed to the two opposite side surfaces by screws 29, 29,... The positioning protrusions 27c and 27c for positioning the metal rectangular tube 2 are bent at right angles and formed integrally.

  Further, a part (that is, the central portion) of the end portions of the holding portions 27b and 27b on the side of the base portion 27a is cut and raised so as to be continuous with the base portion 27a and fixed to the metal square tube 1 with screws 28. Support portions 27d and 27d are provided. Reference numeral 30 denotes an opening formed in the trace of the support portion 27d, and 31 denotes reinforcing beads formed on both sides of the opening 30.

  Furthermore, a reinforcing bead 32 is formed continuously across the support portions 27d, 27d and the base portion 27a. The top surface 32a of the reinforcing bead 32 is a flat surface, and screw holes for screwing the screws 28 are formed in the front top surface 32a at predetermined intervals.

  By the way, since it is necessary to reinforce the mounting strength between the fixing bracket 27 and the metal rectangular tube 1, the reinforcement shown in FIG. 10 is provided at the portion where both ends of the metal rectangular tube 2 abut on each other. A plate 33 is attached. As the reinforcing plate 33, as shown in FIG. 10 (a), a steel plate having an L-shaped cross section having a horizontal portion 33a and a vertical portion 33b fitted to the upper surface 1a and the side surface 1b of the metal square tube 1. Made of plate material. At the end of the horizontal portion 33a of the reinforcing plate 33, a rib 33c is integrally extended so as to be hooked to the upper end portion of the side surface 1c on the opposite side of the metallic square tube 1.

  Further, as another example of the reinforcing plate 33, as shown in FIGS. 10B and 10C, a steel plate material having a U-shaped cross section may be employed.

  In short, the reinforcing plate 33 only needs to have a shape that covers the upper surface 1a and the side surface 1b of the metal square tube 1. Reference numeral 34 denotes a screw for attaching the reinforcing plate 33 to the metal rectangular tube 1.

  As described above, by attaching the reinforcing plate 33 to the portion where both ends of the metal square tube 2 in the metal square tube 1 are abutted, the thickness of the iron plate at the portion becomes like a two-sheet plate. The tightening strength of the screw 28 for attaching the metal fitting 27 is remarkably improved. Therefore, even when the shaking is repeated at the time of the occurrence of the earthquake, there is no possibility that the screw fastening the metal rectangular tube 1 and the fixing bracket 27 is loosened, and the seismic strength is further improved.

  Next, a connection structure between the beam member 7 and the metal square tube 1 will be described with reference to FIGS. 4 and 11.

  As shown in FIG. 4, the metal rectangular tube 1 and the beam member 7 are coupled via a mounting bracket 8, and the mounting bracket 8 is connected to the upper surface of the beam member 7 as illustrated in FIG. 11. 7a and a first holding bracket 8a having a U-shaped cross section that holds both side surfaces 7b and 7c continuous to the upper surface 7a, and both the lower ends of the first holding bracket 8a are integrally extended and made of the metal An upper surface 1a of the rectangular tube 1 and a second holding metal fitting 8b for holding both side surfaces 1b and 1c continuous with the upper surface 1a are constituted. Then, both side surfaces of the first holding metal fitting 8a and both side surfaces 7b and 7c of the beam member 7, and both side surfaces of the second holding metal fitting and both side surfaces 1b and 1c of the metal rectangular tube 1 are: It is fixed by screws 35, 35.

  By configuring as described above, the worker can walk on the metal rectangular tube 1 and the beam member 7 with peace of mind, and simultaneously shakes in the left-right direction when an earthquake occurs, which corresponds to this left-right shake. be able to. In addition, the selected one of the metal rectangular tubes 1, 1,..., 2, 2,... And the upper end of the selected one of the suspension bolts 3, 3,. By connecting with diagonal reinforcing members 20 and 20 made of hollow metal square cylinders, workers can walk on metal square cylinders 1, 1... Or metal members 2, 2. In the event of an earthquake, it swings in the horizontal direction at the same time, but is connected to the rectangular metal rectangular tubes 1, 1,..., 2, 2,. By doing so, it is possible to cope with left and right shaking during an earthquake. In addition, since the diagonal reinforcing members 20 and 20 are formed of a hollow metal square tube having strength in the torsional and vertical and horizontal directions, a ceiling foundation structure having excellent seismic performance capable of withstanding a strong earthquake during an earthquake is obtained. Furthermore, the mounting bracket 8 is integrally extended from both lower ends of the first holding bracket 8a having a U-shaped cross section for holding the beam member 7 and the first holding bracket 8a. By being configured by the second holding metal fitting 8b that holds 1, the orthogonal portion between the orthogonal metal rectangular tube 1 and the beam member 7 can be firmly coupled.

Second Embodiment FIG. 12 shows a ceiling foundation structure according to a second embodiment of the present invention.

  In this case, the metal rectangular tubes 2, 2,... Are omitted, and the lower ends of the diagonal reinforcing members 20, 20 are connected to the selected one of the beam members 7, 7,. Since other configurations are the same as those in the first embodiment, description thereof is omitted.

  In the ceiling foundation structure according to the present embodiment described above, the suspension bolt 3 is configured to suspend a selected one of the metal rectangular tubes 1, 1,. In some cases, a selected one of the rectangular cylinders 2,... May be suspended by using a suspension bolt 3.

  The present invention is not limited to what has been described in the above embodiments, and it is of course possible to change the design as appropriate without departing from the spirit of the invention.

1 is a metal square tube
2 is a metal square tube 3 is a suspension bolt
7 is a beam member (metal square tube)
8 is a mounting bracket 8a is a first holding bracket 8b is a second holding bracket 20 is an oblique reinforcing member 26 is a building structure (H-shaped steel)

Claims (5)

  A number of hollow metal square tubes (1), (1), which are arranged in parallel at predetermined intervals, and a number of parallel metal tubes (1), (1),. Metal square cylinders (2), (2), and the metal square cylinders (1), (1), or (2), (2),. ) .. A ceiling foundation structure configured to be suspended from a building structure (26) using the metal square cylinders (1), (1),. (1), characterized in that a beam member (7) made of a metal square tube orthogonal to the end of the room and attached to the end of the room is attached via a mounting bracket (8). Ceiling foundation structure.   A number of hollow metal square tubes (1), (1), which are arranged in parallel at predetermined intervals, and a number of parallel metal tubes (1), (1),. Metal square cylinders (7), (7), and the metal square cylinders (1), (1), or (7), (7),. ) .. A ceiling foundation structure that is suspended from a building structure (26) by using a beam member that extends from the end of the room to the end. In addition, a ceiling base structure characterized in that the metal rectangular tubes (1), (1), and the beam member (7) are attached via a mounting bracket (8).   The upper end portion of the metal square tube (1), (1), and (2), (2), and the selected one of the suspension bolts (3), (3), or the building The ceiling base structure according to claim 1, wherein the structure (26) is connected to each other by diagonal reinforcing members (20), (20) made of a hollow metal square tube.   The metal rectangular tube (1) and the beam member (7), and the upper end of the selected one of the suspension bolts (3), (3), or the structure (26) of the building, 3. The ceiling foundation structure according to claim 2, wherein the ceiling base structures are connected by diagonal reinforcing members (20) and (20) each made of a hollow metal square tube.   The mounting bracket (8) is integrally extended from a first holding bracket (8a) having a U-shaped cross section for holding the beam member (7) and from both lower ends of the first holding bracket (8a). The ceiling foundation structure according to any one of claims 1 to 4, wherein the ceiling base structure is configured by a second holding metal fitting (8b) that holds the metal square tubes (1).

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