JP2016056662A - Reinforcement brace connecting metal fitting of suspended ceiling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reinforcement brace connecting metal fitting of the suspended ceiling capable of suppressing the occurrence of outer-surface falling in a lower end side joining part of a reinforcement brace.SOLUTION: A reinforcement brace connecting metal fitting 15 of the suspended ceiling is provided for connecting the lower end side of a reinforcement brace 7 to a ceiling backing 6 of assembling a main steel material 1 extended in horizontal one direction T1 and a connection steel material 5 extended in the other direction T2 in a lattice shape, and comprises substantially orthogonally arranged one sidewall plate part 17 and other sidewall plate part 16, and comprises four reinforcement brace connecting metal fitting pieces 18 formed in a substantially L shape. The reinforcement brace connecting metal fitting pieces 18 are respectively installed in four recessed corner parts 20 of arranging the main steel material 1 and the connection steel material 5 in a cross shape by connecting the one sidewall plate part 17 to the main steel material 1 and the other sidewall plate part 16 to the connection steel material 5, and are constituted so as to connect the lower end side of the reinforcement brace 7 to the one sidewall plate part 17 and the main steel material 1 and/or the other sidewall plate part 6 and the connection steel material 5.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a metal fitting for connecting a reinforcing brace of a suspended ceiling to a ceiling base.

  Conventionally, suspended ceilings are frequently used as ceilings of buildings such as schools, hospitals, production facilities, gymnasiums, pools, airport terminal buildings, office buildings, theaters, cinecones, etc. (see, for example, Patent Document 1 and Patent Document 2). . The suspended ceiling (suspended ceiling structure) A has a plurality of T-bars (inverted T-shaped support members) 1 extending in one horizontal direction T1, and an upper end side as shown in FIG. A plurality of suspension bolts (suspension members) 2 which are fixed to the floor material (upper structure) on the upper floor and the lower end side is connected to the T-bar 1 and are arranged so as to be bridged between the adjacent T-bars 1. Some have a ceiling panel 4 that is provided and forms a ceiling surface (ceiling portion 3).

  Further, for example, as shown in FIG. 7, a plurality of T bars (inverted T-shaped support members) 1 and a plurality of upper bars fixed to the upper structure and lower ends connected to the T bars 1 are arranged. An inverted T-shaped cross section that extends in the other direction T2 orthogonal to the horizontal one direction T1 so as to span between the suspension member 2 and the adjacent T-bar 1 and is disposed at a predetermined interval in one direction T1. And a ceiling panel 4 that is integrally attached by screwing to a lattice-like ceiling base 6 composed of the T bar 1 and the connecting T bar 5 to form a ceiling surface (ceiling portion 3). Suspended ceiling A is used.

  On the other hand, the suspended ceiling A is easy to roll due to the horizontal force acting at the time of the earthquake because of the structure, and the end of the ceiling portion 3 collides with a building component such as a wall, a column, or a beam due to this roll. However, there is a possibility that the ceiling panel 4 is damaged or falls off. For this reason, conventionally, as shown in FIGS. 6 and 7, the upper end side is connected to the upper structure or the like, and the lower end side is connected to the ceiling base 6 composed of the suspension bolt 2, the T bar 1, the connecting T bar 5, and the like. The brace 7 is provided to suppress the rolling of the ceiling portion 3 including the ceiling base 6 and the ceiling panel 4 during an earthquake.

JP 2003-13540 A Japanese Patent Laid-Open No. 2003-138689

  However, in the conventional suspended ceiling structure A, as shown in FIG. 8, an external force acts during an earthquake, an axial force acts on the reinforcing brace 7, and a joint S (reinforcing brace connection) on the lower end side of the reinforcing brace 7 In some cases, concentrated stress acts on the metal fitting 10), and the joint S is slightly deformed to fall out of the plane.

  When the joint S is deformed so as to fall out of the plane as described above, the T bar 1 (5) is pulled out in the end (that is, the screw for fixing the ceiling panel 4 to the T bar 1 (5) is pulled out). May occur and the ceiling panel 4 may be dropped.

  In view of the above circumstances, an object of the present invention is to provide a reinforcing brace connection fitting for a suspended ceiling capable of preventing the out-of-plane falling at the joint portion on the lower end side of the reinforcing brace.

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

  The reinforcing brace connecting bracket for a suspended ceiling according to the present invention has a lower end side of the reinforcing brace attached to a ceiling base formed by assembling a main steel material extending in one horizontal direction and a connecting steel material extending in the other direction in a lattice shape. 4. Reinforced brace connecting brackets for suspension ceilings for connection, four reinforcing brace connecting bracket pieces formed in a substantially L shape with one side wall plate portion and another side wall plate portion arranged substantially orthogonal to each other And connecting the one side wall plate portion to the main steel material and the other side wall plate portion to the connection steel material, respectively, in four corners formed by arranging the main steel material and the connecting steel material in a cross shape. The reinforcing brace connecting bracket piece is installed, and is configured to connect a lower end side of the reinforcing brace to the one side wall plate portion and the main steel material and / or to the other side wall plate portion and the connecting steel material. Reinforced blur of suspended ceiling characterized by Connect bracket.

  In the suspended ceiling reinforcing metal fitting of the present invention, a substantially L-shaped reinforcing brace connecting metal fitting piece is installed in each of the four corners formed by arranging the main steel material and the connecting steel material in a cross shape. Reinforcing brace connection fittings are installed as shown. For this reason, an axial force acts on the reinforcing brace in which the lower end side is connected to the one side wall plate portion of the reinforcing brace connecting metal piece and the main steel material, and there is a force that causes the joint portion on the lower end side of the reinforcing brace to fall out of plane. Even if it acts, the force that causes the out-of-plane tilting can be received by the other side wall plate portion of each reinforcing brace connecting bracket piece.

  As a result, even if an axial force acts on the reinforcement brace during an earthquake and concentrated stress acts on the joint on the lower end side of the reinforcement brace, it is possible to prevent this joint from undergoing slight out-of-plane deformation. it can.

  Therefore, the joint part on the lower end side of the reinforcing brace is deformed to fall out of the plane and pulled out to the main steel material (T bar), that is, the screw for fixing the ceiling panel to the main steel material is pulled out, and the ceiling panel It is possible to reliably eliminate the risk of falling.

It is a perspective view which shows the junction part which connected the lower end side of the reinforcement brace using the metal fitting for reinforcement brace connection of the suspended ceiling which concerns on one Embodiment of this invention. It is a top view which shows the junction part which connected the lower end side of the reinforcement brace using the bracket for reinforcement brace connection of the suspended ceiling which concerns on one Embodiment of this invention. It is a top view which shows the bracket for reinforcement brace connection of the suspended ceiling which concerns on one Embodiment of this invention. FIG. 4 is a side view taken along line X1-X1 in FIG. 3 and shows a reinforcing brace connecting bracket for a suspended ceiling according to an embodiment of the present invention. FIG. 4 is a side view taken along line X2-X2 in FIG. 3 and shows a reinforcing brace connecting bracket for a suspended ceiling according to an embodiment of the present invention. It is a perspective view from the ceiling back side which shows the conventional suspended ceiling structure. It is a perspective view from the ceiling back side which shows the conventional suspended ceiling structure. It is a perspective view which shows the lower end side junction part of the conventional reinforcement brace.

  Hereinafter, with reference to FIG. 1 to FIG. 5 and FIG. 7, a reinforcing brace connecting bracket for a suspended ceiling according to an embodiment of the present invention will be described.

  First, as shown in FIG. 1 and FIG. 2 (see FIG. 7), the suspended ceiling structure (suspended ceiling) A of the present embodiment extends in one horizontal direction T1, and extends in the other direction T2 perpendicular to the one direction T1. A plurality of T-bars (inverted T-shaped main steel material) 1 disposed at predetermined intervals, and a plurality of T-bars having upper ends fixed to the upper structure and lower ends connected to the T-bars 1. A plurality of inverted T-shaped connection T bars (connections) that extend in the other direction T2, span over adjacent T bars 1, and are arranged at predetermined intervals in one direction T1. (Steel material) 5 and a ceiling panel 4 which is screwed to the ceiling base 6 and attached integrally to form a ceiling surface (ceiling portion 3).

  Further, the ceiling base 6 is composed of the T bar 1 and the connecting T bar 5, that is, a steel material assembled in a lattice shape.

  Further, the reinforcing brace 7 is provided by being connected to the ceiling base 6 using a reinforcing brace connection fitting 15. At this time, in this embodiment, the pair of reinforcing braces 7 are arranged side by side so as to exhibit a V shape in one direction T1.

  In addition, the suspension bolt 2 is provided by connecting the lower end side to the T bar 1 of the ceiling base 6 via the suspension member connection metal fitting 11 and supports the ceiling base 6 in a suspended manner.

  Further, a lightweight ceiling panel 4 such as a directly-attached rock wool sound absorbing board is fixed on the lower surface of the ceiling base 6 with a screw 8 penetrating from the lower side to the ceiling panel 4 and the ceiling base 6. In this way, the ceiling surface is formed by attaching the plurality of ceiling panels 4 to the ceiling base 6.

  Since the reinforcing brace 7 is fixed to the ceiling base 6 using the reinforcing brace connecting metal 15 as described above, and the suspension bolt 2 is fixed to the ceiling base 6 using the hanging member connecting metal 11, When an earthquake occurs, the ceiling inertia force (horizontal force) is transmitted to the reinforcement brace 7 through the ceiling base 6.

  On the other hand, as shown in FIGS. 1 to 5, the suspended brace reinforcing bracket 15 for the suspended ceiling according to the present embodiment is provided with one side wall plate portion 17 and another side wall plate portion 16 arranged substantially orthogonally, and is substantially L-shaped. It is comprised from the metal piece 18 for four reinforcement brace connection formed in the shape.

  Further, the reinforcing brace connecting metal piece 18 of the present embodiment extends along the other side wall plate part 16 at a connection portion between the one side wall plate part 17 and the other side wall plate part 16, orthogonal to the one side wall plate part 17, Furthermore, it has a protruding corner portion 19 that extends perpendicularly and is connected to the other side wall plate portion 16, and is formed in a substantially L shape.

Then, at one of the four corners 20 in which the T bar 1 and the connecting bar 5 are arranged in a cross shape, the one side wall plate portion 17 is screwed to the T bar 1 and the other side wall plate portion 16 is screwed to the connecting bar 5. Then, the reinforcing brace connecting metal piece 18 is installed. At this time, the spacers 21 are interposed between the one side wall plate portions 17 of the reinforcing brace connecting metal piece 18 adjacent to each other and between the other side wall plate portions 16. As a result, the reinforcing brace connection fitting 15 is installed so as to have a substantially cross shape.
In addition, the spacer 21 may be integrally provided in advance on the one side wall plate portion 17 and / or the other side wall plate portion 16 of the reinforcing brace connecting metal piece 18.

  Further, in this embodiment, when the four reinforcing brace connecting bracket pieces 18 are installed in this way, the reinforcing brace connecting bracket pieces 18 are formed at the connecting portions of the one sidewall plate portion 17 and the other sidewall plate portion 16. A communication space that surrounds the cross-shaped intersection of the T bar 1 and the connecting bar 5 is formed by the protruding corner 19.

  Thereby, in this embodiment, the lower end side of the suspension member connection bracket 11 for connecting the suspension bolt 2 is connected to the T-bar 1 through this communication space, and the suspension member connection bracket protruding upward from the communication space. 11 can be connected to the lower end of the suspension bolt 2.

On the other hand, the reinforcing brace connecting metal piece 18 is installed in this way, and the lower end side of the reinforcing brace 7 is connected to the one side wall plate portion 17 and the T bar 1.
The lower end side of the reinforcing brace 7 may be connected to the other side wall plate portion 16 and the connecting bar 5 of the reinforcing brace connecting metal piece 18.

  And, in the suspended ceiling reinforcing brace connecting bracket 15 and the suspended ceiling structure A provided with the suspension ceiling 15 of the present embodiment configured as described above, the T bar 1 and the connecting bar 5 are arranged in a cross shape. Reinforcing brace connecting metal pieces 15 are installed in the corners 20 so as to have a substantially L-shaped reinforcing brace connecting metal piece 18 and have a substantially cross shape.

  For this reason, an earthquake occurs and an axial force acts on the reinforcing brace 7 to cause a force that causes the one side wall plate portion 17 of each reinforcing brace connecting metal piece 18 connecting the lower end side of the reinforcing brace 7 to fall out of plane. Even if it acts, the force that causes this out-of-plane tilting is received by the other side wall plate portion 16 of each reinforcing brace connecting bracket piece 18.

  Thus, even when an axial force acts on the reinforcing brace 7 during an earthquake and a concentrated stress acts on the joint S on the lower end side of the reinforcing brace 7 as in the conventional case, the joint S is slightly out of plane. There will be no deformation of falling.

  Therefore, in the suspended ceiling reinforcing brace connecting bracket 15 and the suspended ceiling structure A of the present embodiment, the reinforcing brace 7 having the lower end connected to the one side wall plate portion 17 and the T bar 1 of the reinforcing brace connecting bracket piece 18 is used. Even when a force that causes an out-of-plane tilt is applied to the joint A on the lower end side of the reinforcing brace 7 due to an axial force, the force that causes the out-of-plane toppling is applied to each reinforcing brace connecting bracket piece. 18 can be received by the other side wall plate portion 16.

  As a result, even when an axial force acts on the reinforcing brace 7 during an earthquake and a concentrated stress acts on the joint S on the lower end side of the reinforcing brace 7, the joint S undergoes a slight out-of-plane deformation. It can be prevented from occurring.

  Therefore, the joint S on the lower end side of the reinforcing brace 7 is deformed to fall out of the plane and pulled out to the T bar 1, that is, the screw for fixing the ceiling panel 4 to the T bar 1 is pulled out, and the ceiling panel The possibility of incurring the fall of 4 can be reliably eliminated.

  The embodiment of the bracket for reinforcing brace connection for a suspended ceiling according to the present invention has been described above, but the present invention is not limited to the above embodiment, and can be appropriately changed without departing from the spirit of the present invention. is there.

For example, in the present embodiment, the pair of reinforcing braces 7 arranged in parallel in one direction T <b> 1 so as to exhibit a V shape using the reinforcing brace connecting metal fitting 15 is illustrated and described.
On the other hand, when connecting one reinforcing brace 7 arranged so as to exhibit a reticular shape, a pair of reinforcing braces 7 are juxtaposed in one direction T1 and the other direction T2, respectively. In the case of connecting the four reinforcing braces 7 arranged so as to exhibit a shape, the reinforcing brace connecting metal fitting 15 can be used as a matter of course. In these cases, out-of-plane deformation can be suppressed as in the present embodiment.

1 T bar (main steel)
2 Suspension bolt (suspending member)
3 Ceiling part 4 Ceiling panel 5 Connection T bar (connection steel)
6 Ceiling base 7 Reinforcement brace 10 Conventional reinforcement brace connection bracket 11 Hanging member connection bracket 15 Reinforcement brace connection bracket 16 Other side wall plate portion 17 One side wall plate portion 18 Reinforcement brace connection bracket piece 19 Outlet corner portion 20 Corner Part 21 Spacer A Conventional suspended ceiling structure S Joint T1 on the lower end side of the reinforcing brace One direction T2 Other direction T3 Vertical direction

Claims (1)

It is a bracket for connecting brace reinforcement for suspended ceilings to connect the lower end of the reinforcement brace to the ceiling base made by assembling the main steel material extending in one horizontal direction and the connecting steel material extending in the other direction in a grid pattern. There,
Comprising four reinforcing brace connecting bracket pieces formed in a substantially L shape with one side wall plate portion and another side wall plate portion arranged substantially orthogonally;
The reinforcing brace is formed by connecting the one side wall plate portion to the main steel material and the other side wall plate portion to the connection steel material at four corners formed by arranging the main steel material and the connecting steel material in a cross shape. It is configured to connect the lower end side of the reinforcing brace to the one side wall plate portion and the main steel material and / or to the other side wall plate portion and the connecting steel material while installing the connecting metal piece. Reinforced brace fitting for hanging ceiling.

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