JP7295737B2 - Ceiling member support structure - Google Patents

Description

The present invention relates to a ceiling member support structure that supports a concrete ceiling member with support brackets fixed to a wall surface.

Patent Documents 1 and 2 describe a ceiling member support structure in which a relatively lightweight ceiling panel used in a unit room such as a bathroom is supported by a support bracket fixed to a wall surface.
In such a conventional ceiling member support structure, the support bracket has a ceiling panel mounting portion on which the edge of the ceiling panel is mounted. Then, the ends of the ceiling panel are fixed with screws or the like so that they cannot move while being placed on the ceiling panel mounting portion of the support bracket.

JP-A-06-026147 Japanese Patent No. 2625063

In the conventional ceiling member support structure as described above, since the ceiling panel is relatively lightweight, even if an unexpected external force such as an earthquake force is applied to the ceiling panel, the support bracket will not the force transmitted from the ceiling panel will not be excessive.
However, in a ceiling member support structure in which a relatively heavy concrete ceiling member such as precast concrete is supported by support brackets fixed to the wall surface instead of such a ceiling panel, external forces such as seismic force are applied to the ceiling panel. If the force is applied to the support bracket, a very large force is transmitted to the support bracket.
In view of this situation, the main object of the present invention is to provide a ceiling member support structure in which a concrete ceiling member is supported by support brackets fixed to a wall surface, in which the fixing portion of the support bracket to the wall surface is damaged and the ceiling member is prevented from being damaged. The purpose is to provide a technique for preventing the falling off of the device.

A first characteristic configuration of the present invention is a ceiling member support structure that supports a concrete ceiling member with a support bracket fixed to a wall surface,
The support bracket has a ceiling member mounting portion on which an end portion of the ceiling member is mounted on an upper surface in a state in which the ceiling member is slidable along at least the perspective direction with respect to the wall surface,
A frictional resistance material is interposed between the ceiling member and the ceiling member mounting portion to add frictional resistance to sliding of the ceiling member along the perspective direction,
a biasing mechanism that biases the ceiling member toward the ceiling member mounting portion while allowing the ceiling member to slide;
The biasing mechanism has a bolt that vertically penetrates the ceiling member mounting portion and the ceiling member and tightens them, and the bolt insertion through which the bolt is inserted in the ceiling member mounting portion. The feature lies in that the hole is formed as an elongated long hole along the perspective direction with respect to the wall surface.

According to this configuration, even if an unexpected external force such as an earthquake force is applied to the ceiling member, which is relatively heavy, and the ceiling member slides along the wall in the far and near direction, the ceiling member and its end portion can be placed on the wall. Frictional resistance is added by the frictional resistance material interposed between the ceiling member mounting portion and the ceiling member, so that excessive force is transmitted in the tensile direction from the ceiling member to the support bracket that supports it. can be suppressed. As a result, it is possible to prevent damage to the fixing portion of the support bracket to the wall surface and accompanying falling-off of the ceiling member.
Furthermore, according to this configuration, since the ceiling member is urged toward the ceiling member mounting portion by the urging mechanism, the frictional resistance applied by the frictional resistance material can be appropriately adjusted by adjusting the urging force. , it is possible to further suppress transmission of excessive force in the tensile direction from the ceiling member to the support bracket that supports the ceiling member when an external force is applied to the ceiling member.
Furthermore, according to this configuration, in the biasing mechanism, the ceiling member is attached toward the ceiling member mounting portion by the tightening force of the bolt provided in a state vertically penetrating the ceiling member mounting portion and the ceiling member. can force. In addition, since the bolt insertion holes through which the bolts constituting the urging mechanism are inserted in the ceiling member mounting portion are formed in elongated holes along the far-near direction with respect to the wall surface, the ceiling member is positioned in the far-near direction with respect to the wall surface. It is possible to prevent the ceiling member from sliding along the wall surface while allowing the sliding along the wall surface, thereby preventing the ceiling member from slipping along the wall surface.

According to a second characteristic configuration of the present invention, the support bracket has a protection portion arranged along the wall surface at a portion facing the end surface of the ceiling member.

According to this configuration, since the support bracket is provided with the protection portion, the protection portion prevents the end surface of the ceiling member from directly colliding with the wall surface when the ceiling member slides toward the wall surface. can be prevented. Therefore, it is possible to suppress the damage caused by the collision of the ceiling member on the wall surface.

A third characteristic configuration of the present invention is a ceiling member support structure in which a concrete ceiling member is supported by a support bracket fixed to a wall surface,
The support bracket has a ceiling member mounting portion on which an end portion of the ceiling member is mounted on an upper surface in a state in which the ceiling member is slidable along at least the perspective direction with respect to the wall surface,
A frictional resistance material is interposed between the ceiling member and the ceiling member mounting portion to add frictional resistance to sliding of the ceiling member along the perspective direction,
The support bracket has a protection portion disposed along the wall surface at a portion facing the end surface of the ceiling member,
The support bracket is composed of an H-shaped steel in a lateral posture with a web along the horizontal direction, and a flange on one side of the H-shaped steel is fixed to the wall surface so that the upper half of the flange is protected by the protection bracket. In addition, the upper half of the flange on the other side of the H-section steel is cut off, and the web of the H-section steel functions as the ceiling member mounting section.

According to this configuration, even if an unexpected external force such as an earthquake force is applied to the ceiling member, which is relatively heavy, and the ceiling member slides along the wall in the far and near direction, the ceiling member and its end portion can be placed on the wall. Frictional resistance is added by the frictional resistance material interposed between the ceiling member mounting portion and the ceiling member, so that excessive force is transmitted in the tensile direction from the ceiling member to the support bracket that supports it. can be suppressed. As a result, it is possible to prevent damage to the fixing portion of the support bracket to the wall surface and accompanying falling-off of the ceiling member.
Furthermore, according to this configuration, since the support bracket is provided with the protective portion, the end surface of the ceiling member is protected from direct collision with the wall surface when the ceiling member slides toward the wall surface. can be prevented by the department. Therefore, it is possible to suppress the damage caused by the collision of the ceiling member on the wall surface.
Furthermore, according to this configuration, the support bracket can be manufactured at low cost by processing the H-section steel. That is, the flange on one side of the H-shaped steel can be fixed to the wall surface, and the upper half can be used as a protective portion for preventing the ceiling member from colliding with the wall surface. In addition, by cutting off the upper half of the flange on the other side of the H-shaped steel, the web of the H-shaped steel can be used as a ceiling member mounting portion on which the end of the ceiling member is mounted on the upper surface. Also, by leaving the lower half of the flange on the other side, the web used as the ceiling member mounting portion can be suitably reinforced.
A fourth characteristic configuration of the present invention is provided with an urging mechanism portion that urges the ceiling member toward the ceiling member mounting portion while allowing the ceiling member to slide.
According to this configuration, since the ceiling member is urged toward the ceiling member placing portion by the urging mechanism, the frictional resistance applied by the frictional resistance material is appropriately set by adjusting the urging force. As a result, when an external force is applied to the ceiling member, it is possible to further suppress transmission of excessive force in the pulling direction from the ceiling member to the support bracket that supports the ceiling member.

Elevation view showing the whole ceiling member supported by the ceiling member support structure of the present embodiment Enlarged view of the ceiling member support structure shown in FIG. Bottom view of the ceiling member support structure shown in FIG.

An embodiment of a ceiling member support structure according to the present invention will be described based on the drawings.
As shown in FIG. 1, the ceiling member support structure 50 of this embodiment is configured to support a concrete ceiling member 1 with support brackets 10 fixed to, for example, a concrete wall surface W of a building. .
For example, the ceiling member 1 is made of a relatively heavy precast concrete plate or the like. Both end portions 1a of the ceiling member 1 are supported on the wall surface W by support brackets 10, respectively. Specifically, all or part of the weight (vertical force) of the ceiling member 1 is supported by the hanging member 2 provided separately from the support bracket 10, and the rest of the weight of the ceiling member 1 is supported by the support bracket 10. received in If the ceiling member 1 is of a relatively small size, the entire weight of the ceiling member 1 may be supported by the support brackets 10 .
Further, the ceiling member support structure 50 of the present embodiment is constructed by repairing the existing ceiling member 1 that was supported on the wall surface W of the building in another form. In addition, in this repair work, as for the support bracket 10, an existing bracket that supports the existing ceiling member 1 may be appropriately processed and used.

As also shown in FIG. 2, the support bracket 10 has a flat plate-shaped ceiling member mounting portion 10A extending horizontally along the wall surface W, and the end of the ceiling member 1 is mounted on the upper surface of the ceiling member mounting portion 10A. The part 1a is placed.
Furthermore, when the end portion 1a of the ceiling member 1 is placed on the ceiling member placing portion 10A, a gap 25 is formed outside the end surface 1b of the ceiling member 1 on the wall surface W side. , the ceiling member 1 mounted on the ceiling member mounting portion 10A is in a state of being slidable along at least the perspective direction X with respect to the wall surface W (horizontal direction in FIGS. 1 and 2). Although illustration is omitted, a cushioning material may be interposed in the gap 25 as appropriate.

The support bracket 10 is constructed of sideways oriented H-beams with webs along the horizontal direction. Of the flanges on the wall surface W side of the H-shaped steel that constitutes the support bracket 10, the lower flange functions as a wall fixing portion 10B that is fixed to the wall surface W of the building with bolts 30, and the upper flange It is arranged along the wall surface W at a portion facing the end surface 1b of the ceiling member 1 and functions as a protection portion 10C for preventing the ceiling member 1 from colliding with the wall surface W. As shown in FIG. That is, since the support bracket 10 is provided with such a protective portion 10C, the end face 1b of the ceiling member 1 collides directly with the wall surface W when the ceiling member 1 slides toward the wall surface W. is prevented, and damage due to collision of the ceiling member 1 on the wall surface W is suppressed.
It should be noted that the protective portion 10C can be omitted or modified as appropriate. Further, when the protective portion 10C is omitted as appropriate, a cushioning material may be interposed in the gap between the wall surface W and the end surface 1b of the ceiling member 1 as appropriate.

On the other hand, the upper flange of the flanges on the side opposite to the wall surface W of the H-section steel that constitutes the support bracket 10 is cut off as a cut-off portion 10E. It functions as a placement portion 10A, and the end portion 1a of the ceiling member 1 is placed on its upper surface.
In addition, the lower flange of the flanges on the side opposite to the wall surface W of the H-shaped steel constituting the support bracket 10 is left as it is, and is used as the ceiling member mounting portion 10A to reinforce the web. It functions as a reinforcing part 10D. Note that the reinforcing portion 10D can be omitted or modified as appropriate.

In the ceiling member support structure 50 of the present embodiment, between the upper plate 14 attached to the lower surface of the end portion 1a of the ceiling member 1 and the lower plate 12 attached to the upper surface of the ceiling member mounting portion 10A, the ceiling A frictional resistance material 13 is interposed to add frictional resistance to sliding of the member 1 along the far-near direction X. As shown in FIG. The frictional resistance material 13 is made of a plate material similar to that of a brake pad used in an automobile brake, and provides a frictional resistance against displacement of the upper and lower plates 12 and 14 in the in-plane direction. Any material may be used as long as it is a material to be applied.

Since the frictional resistance material 13 as described above is interposed between the ceiling member 1 and the ceiling member mounting portion 10A, an unexpected external force such as seismic force is applied, resulting in a relatively heavy weight. Even if a certain ceiling member 1 slides along the perspective direction X, the support bracket 10 that supports it from the ceiling member 1 by adding frictional resistance to the external force by the frictional resistance material 13. It is suppressed that excessive force is transmitted in the tensile direction with respect to. As a result, the fixing portion of the support bracket 10 to the wall surface W is prevented from being damaged, and the ceiling member 1 is prevented from coming off.

Furthermore, there is provided a biasing mechanism 20 that biases the ceiling member 1 toward the ceiling member mounting portion 10A while allowing the ceiling member 1 to slide. The urging mechanism 20 is provided along the upper surface of the end portion 1a of the ceiling member 1 and bolts 21 that are provided to vertically penetrate the ceiling member mounting portion 10A and the ceiling member 1 and tighten them. A holding plate 16, an upper nut 22 screwed onto the upper end of a bolt 21 to urge the holding plate 16 downward, and a lower end of the bolt 21 to urge the ceiling member mounting portion 10A upward. It is configured to have a lower nut 23 that
Since the ceiling member 1 is urged toward the ceiling member mounting portion 10A by the biasing mechanism 20, the frictional resistance applied by the frictional resistance material 13 increases, and the ceiling member 1 disengages it. It is further suppressed that an excessive force is transmitted in the pulling direction to the support bracket 10 that supports it.
Further, in the biasing mechanism portion 20, the ceiling member 1 is biased toward the ceiling member mounting portion 10A by the tightening force of the upper and lower nuts 22 and 23 on the bolt 21. As shown in FIG.

Further, the ceiling member mounting portion 10A and the lower plate 12 attached to the upper surface thereof are formed with bolt insertion holes 10a through which the bolts 21 are inserted. , are elongated along the direction X with respect to the wall surface W. As shown in FIG. As a result, the bolt 21 is allowed to slide along the perspective direction X with respect to the wall surface W of the ceiling member 1 in a form in which the bolt 21 is displaced along the longitudinal direction of the long hole that constitutes the bolt insertion hole 10a. is in contact with the side wall of the long hole forming the bolt insertion hole 10a, the ceiling member 1 is prevented from sliding along the wall surface W, and the ceiling member 1 is prevented from slipping along the wall surface W. become. Although not shown, the ceiling member 1 and the plates 16 and 14 attached to the upper and lower surfaces of the ceiling member 1 have round holes slightly larger in diameter than the bolts 21 as the bolt insertion holes through which the bolts 21 are inserted. there is

[Another embodiment]
Another embodiment of the present invention will be described. It should be noted that the configuration of each embodiment described below is not limited to being applied alone, and can be applied in combination with the configurations of other embodiments.

(1) In the above embodiment, the ceiling member 1 and the wall surface W are made of concrete, but these materials can be changed as appropriate. Further, the ceiling member 1 may be a single piece, or may be a piece in which a plurality of divided panels are integrated with metal fittings or the like.

(2) In the above-described embodiment, the ceiling member mounting portion 10A and the ceiling member 1 are provided with the biasing mechanism portion 20 having the bolts 21 which are provided in a state of vertically penetrating and tightening them. If the ceiling member 1 is moderately biased toward the ceiling member mounting portion 10A by its weight, the biasing mechanism portion 20 may be omitted. In addition, the biasing mechanism 20 may be appropriately modified, for example, by using a weight instead of using a bolt.

(3) In the above embodiment, the support bracket 10 was manufactured by processing the H-section steel, but the support bracket 10 may be manufactured using another steel material other than the H-section steel.

(4) In the above-described embodiment, the bolt insertion holes 10a formed on the ceiling member mounting portion 10A side are formed into elongated long holes along the perspective direction X with respect to the wall surface W, Although it is configured to allow sliding along the far-near direction X, the shape of the bolt insertion hole 10a may be appropriately changed, for example, to a round hole sufficiently larger than the diameter of the bolt 21 . Alternatively, the bolt insertion hole 10a formed in the ceiling member 1 may be formed as a circular hole or the like sufficiently larger in diameter than the bolt 21 so as to allow the ceiling member 1 to slide.

1 Ceiling member 1a End 1b End face 10 Support bracket 10A Ceiling member mounting portion (web)
10B wall fixing part (flange)
10C Protective part (flange)
10D reinforcement (flange)
10E cut off part (flange)
10a bolt insertion hole 13 frictional resistance material 20 urging mechanism portion 21 bolt 25 gap 50 ceiling member support structure W wall surface X perspective direction

Claims (4)

A ceiling member support structure in which a concrete ceiling member is supported by a support bracket fixed to a wall surface,
The support bracket has a ceiling member mounting portion on which an end portion of the ceiling member is mounted on an upper surface in a state in which the ceiling member is slidable along at least the perspective direction with respect to the wall surface,
A frictional resistance material is interposed between the ceiling member and the ceiling member mounting portion to add frictional resistance to sliding of the ceiling member along the perspective direction,
a biasing mechanism that biases the ceiling member toward the ceiling member mounting portion while allowing the ceiling member to slide;
The biasing mechanism has a bolt that vertically penetrates the ceiling member mounting portion and the ceiling member and tightens them, and the bolt insertion through which the bolt is inserted in the ceiling member mounting portion. A ceiling member support structure in which a hole is formed as an elongated elongated hole along a perspective direction with respect to the wall surface. 2. The ceiling member support structure according to claim 1 , wherein the support bracket has a protective portion arranged along the wall surface at a portion facing the end face of the ceiling member. A ceiling member support structure in which a concrete ceiling member is supported by a support bracket fixed to a wall surface,
The support bracket has a ceiling member mounting portion on which an end portion of the ceiling member is mounted on an upper surface in a state in which the ceiling member is slidable along at least the perspective direction with respect to the wall surface,
A frictional resistance material is interposed between the ceiling member and the ceiling member mounting portion to add frictional resistance to sliding of the ceiling member along the perspective direction,
The support bracket has a protection portion disposed along the wall surface at a portion facing the end surface of the ceiling member,
The support bracket is composed of an H-shaped steel in a lateral posture with a web along the horizontal direction, and a flange on one side of the H-shaped steel is fixed to the wall surface so that the upper half of the flange is protected by the protection bracket. a ceiling member support structure in which the upper half of the flange on the other side of the H-section steel is cut off and the web of the H-section steel functions as the ceiling member mounting section. 4. The ceiling member support structure according to claim 3 , further comprising a biasing mechanism that biases the ceiling member toward the ceiling member mounting portion while allowing the ceiling member to slide.

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