JP6470514B2 - Seismic ceiling - Google Patents

Description

  The present invention relates to a ceiling in which a ceiling base material composed of a field edge to which a ceiling panel is attached and a field edge support is suspended by suspension bolts, and particularly relates to a ceiling with improved earthquake resistance.

  For example, suspended ceilings are often used for ceilings of reinforced concrete buildings. As shown in FIG. 7, this type of ceiling 100 has a plurality of field edges 111 arranged in parallel with each other at a predetermined interval, and extends in a direction perpendicular to the field edges 111, and is aligned horizontally and in parallel with each other. The ceiling base material 110 is constructed by a plurality of field edge receivers 113 that are installed and coupled to the plurality of field edges 111 via clips 112, and the lower end of the ceiling base material 110 is the field edge receiver 113. The ceiling panel 103, which is coupled to the upper hanger 101 and is suspended by a plurality of suspension bolts 102 whose upper ends are fixed to a floor slab or the like on the upper floor, forms a lower floor ceiling surface. It is structured to be integrally attached with screws.

  When this type of ceiling 100 sways greatly and collides with the wall 200 when an earthquake occurs, the ceiling panel 103 falls off the field edge 111 due to the impact, or the field edge 111 is removed from the field edge receiver 113. There is a risk of falling off and dropping together with the ceiling panel 103. Therefore, conventionally, as a general method for improving the earthquake resistance of the ceiling 100, a brace (not shown) which is an oblique material is installed on the suspension bolt 102, and the ceiling 100 and the wall 200 are prevented from shaking. A sufficient clearance C is provided between the ceiling 100 and the wall 200 so as not to collide when an earthquake occurs (see, for example, Patent Document 1 below).

  In addition, a method may be considered in which a clearance C is not provided between the ceiling 100 and the wall 200, and the horizontal force generated on the ceiling 100 due to an earthquake or the like is borne on the wall 200, not on the brace.

JP 2009-167737 A

  However, when it is difficult to shake the ceiling 100 by braces, the braces necessary for calculation may not be arranged due to the arrangement of equipment in the space behind the ceiling, and depending on the use conditions of the room such as a clean room, etc. May not have sufficient clearance C.

  Therefore, if the clearance C is not provided between the ceiling 100 and the wall 200, that is, if the ceiling 100 and the wall 200 are brought into contact with each other, an impact force due to a collision does not occur. However, in practice, a gap inevitable in construction is generated, and it is difficult to bring the ceiling 100 and the wall 200 into contact with each other without a gap.

  The present invention has been made in view of the above points, and its technical problem is to effectively realize a method in which an impact is not generated by receiving a horizontal force generated on a ceiling by an earthquake or the like on a wall. Is to provide a possible seismic ceiling.

The present invention provides a ceiling base material comprising a plurality of field edges and a plurality of field edge receivers coupled orthogonally to the field edges, a ceiling panel attached to the lower surface of the field edge, and a suspension support for the field edge receivers. in the ceiling and a plurality of hanging bolts, the the end of the whole or part of the received field edges and ceiling joists, via a telescopic joint member slidably is inserted together with the end portion, the nested A pressing material, which is the same material as that used as all or a part of the field edge and the field edge receiver into which the joint of the type is inserted, is attached, and from the field edge and field edge receiver through the joint member An end of the pressing member fixed so as to protrude is in contact with a wall-side receiving surface around the ceiling.

  According to the earthquake-resistant ceiling according to the present invention, the horizontal force generated in the ceiling due to an earthquake or the like is received by the wall and transmitted to the wall side through the pressing member, and the ceiling is displaced integrally with the wall side. It is possible to effectively prevent a fall accident such as a ceiling panel or a field edge by regulating the occurrence of an impact due to a wall collision.

Shows a first embodiment of a seismic ceilings, (A) is a fragmentary perspective view showing the configuration near the end of the ceiling joists, (B) is essential showing the configuration near the end of the receiving field edge FIG. Shows a second embodiment of the seismic ceilings, (A) is a fragmentary perspective view showing the configuration near the end of the ceiling joists, (B) is essential showing the configuration near the end of the receiving field edge FIG. Shows a third embodiment of the seismic ceilings, (A) is a fragmentary perspective view showing the configuration near the end of the ceiling joists, (B) is essential showing the configuration near the end of the receiving field edge FIG. Shows a fourth embodiment of the seismic ceilings, (A) is a fragmentary plan view showing the structure near the end of the ceiling joists, (B) is essential showing the configuration near the end of the receiving field edge FIG. Shows a fifth embodiment of the seismic ceilings, (A) is a fragmentary perspective view showing the configuration near the end of the ceiling joists, (B) is essential showing the configuration near the end of the receiving field edge FIG. Shows a sixth embodiment of the seismic ceilings, (A) is a fragmentary perspective view showing the configuration near the end of the ceiling joists, (B) is essential showing the configuration near the end of the receiving field edge FIG. It shows one seismic ceiling according to the prior art, (A) is a partial perspective view showing the configuration near the end of the field edge, (B) is a partial perspective view showing the configuration near the end of the field edge receiver. is there.

Hereinafter, preferred embodiments of the seismic ceiling will be described with reference to the drawings. First, FIG. 1 shows a first embodiment, in which (A) shows the configuration near the end of the field edge, and (B) shows the configuration near the end of the field edge receiver.

  The earthquake-resistant ceiling according to the first embodiment has a plurality of field edges via a hanger 12 that is a hanging bracket at the lower end of a large number of suspension bolts 11 (only one is shown in FIG. 1) suspended from a frame slab (not shown). By suspending the receiver 13 horizontally and parallel to each other, and attaching a plurality of field edges 15 below the field edge receiver 13 via clips 14 that are coupling brackets so as to be orthogonal to each other, A grid-like ceiling base material 1 is constructed, and a large number of ceiling panels 2 made of fireproof boards are attached to the lower surface of the field edge 15 so as to be arranged vertically and horizontally.

  Specifically, the field edge 15 is made of a metal plate formed in a bowl shape (lip shape), and is arranged so as to extend in the X direction, and the tip thereof is a wall surface in the YZ direction of the body wall 200 around the ceiling. It is spaced apart from 200a and there is a slight clearance C between the outer peripheral edge of the ceiling panel 2 and the wall surface 200a.

  A pressing member 3 made of a metal plate formed in a bowl shape (groove shape) is inserted into a telescopic end 15a of all or a part of the plurality of field edges 15 in a telescoping manner and screwed. The end portion 3 a of the pressing member 3 protruding from the end portion of the field edge 15 is in contact with the YZ direction wall surface 200 a of the housing wall 200. This pressing member 3 is inserted in advance into the end portion 15a of the field edge 15, and is slid so that the end portion 3a abuts against the YZ direction wall surface 200a of the frame wall 200 when the ceiling base material 1 is constructed. The screw 31 is fixed to the field edge 15.

  The field receiver 13 is made of a metal plate formed in a U-shaped cross section (groove shape), and is arranged so as to extend in the Y direction, and the tip thereof is the XZ direction wall surface 200b of the frame wall 200 around the ceiling. A clearance C slightly exists between the outer peripheral edge of the ceiling panel 2 and the wall surface 200b.

  A pressing member 4 made of a metal plate having a U-shaped cross section (groove shape) is provided in the vicinity of the end portion in the Y direction on all or a part of the plurality of field receivers 13. 15 is arranged back-to-back with the web 13a of the field edge receiver 13 so as to straddle 15 and is fixed to the clip 14 connecting the field edge receiver 13 and the field edge 15 by screws 41. An end portion 4 a of the pressing member 4 protruding from the end portion 13 is in contact with the XZ direction wall surface 200 b of the housing wall 200. The pressing member 4 is temporarily constrained back-to-back with the web 13a of the field edge receiver 13 by using two continuous clips 14, and when the ceiling base material 1 is constructed, the end 4a is attached to the frame wall 200. It is slid so as to abut against the XZ direction wall surface 200b and fixed to the clip 14 and the field edge receiver 13 with a screw 41.

  The YZ direction wall surface 200a and the XZ direction wall surface 200b of the housing wall 200 correspond to the “wall side receiving surface around the ceiling” described in claim 1.

  According to the first embodiment having the above-described configuration, the pressing member 3 in the X direction substantially constitutes a part of the field edge 15, and its end portion is connected to the YZ direction wall surface 200 a of the housing wall 200. The Y-direction pressing material 4 substantially extends as a part of the field edge receiver 13, and its end is in contact with the XZ direction wall surface 200 b of the housing wall 200. It is to be extended.

  For this reason, when a horizontal force in the X direction is generated on the ceiling at the time of the occurrence of the earthquake, the horizontal force is transmitted from the field edge 15 through the pressing member 3 to the YZ direction wall surface 200a of the frame wall 200, The force is transmitted from the field receiver 13 to the XZ-direction wall surface 200b of the frame wall 200 through the pressing member 4, and the ceiling is displaced integrally with the frame wall 200, so that the collision between the ceiling and the frame wall 200 is regulated. The For this reason, it is possible to prevent the ceiling panel 2 from dropping from the field edge 15 and dropping due to the impact, or the field edge 15 from falling from the field edge receiver 13 and dropping together with the ceiling panel 2.

Next, FIG. 2, there is shown a second embodiment of the seismic ceiling, figure (A) is near the end of the ceiling joist, the (B) the structure of the vicinity of the end portion of the receiving field edge It is shown.

  In this second embodiment, the difference from the first embodiment described above is that a receiving member 201 made of a lightweight steel frame or the like is attached to the YZ direction wall surface 200a of the housing wall 200 and extends in the Y direction. A receiving member 202 made of a lightweight steel frame or the like and attached in the X direction is attached to the directional wall surface 200b, and the end portion 3a of the pressing member 3 protruding from the end portion of the field edge 15 is brought into contact with the side surface 201a of the receiving member 201, The end portion 4 a of the pressing member 4 protruding from the end portion of the field edge receiver 13 is in contact with the side surface 202 a of the receiving member 202.

  In this case, the side surface 201 a of the receiving material 201 and the side surface 202 a of the receiving material 202 correspond to the “wall-side receiving surface around the ceiling” described in claim 1.

  The second embodiment also has the same effect as the first embodiment. That is, when a horizontal force in the X direction is generated on the ceiling when an earthquake occurs, the horizontal force is applied to the field edge 15. Is transmitted to the frame wall 200 through the pressing member 3 and the receiving member 201, and the horizontal force in the Y direction is transmitted from the field receiver 13 through the pressing member 4 and the receiving member 202 to the XZ direction wall surface 200 b of the frame wall 200. Since the ceiling is displaced integrally with the casing wall 200, the collision between the ceiling and the casing wall 200 is restricted. In addition, the receiving members 201 and 202 have the function of dispersing the horizontal force from the pressing members 3 and 4 and transmitting it to the frame wall 200 to prevent stress from being concentrated locally on the frame wall 200. For this reason, it is possible to prevent the ceiling panel 2 from dropping from the field edge 15 and dropping due to the impact, or the field edge 15 from falling from the field edge receiver 13 and dropping together with the ceiling panel 2.

Next, FIG. 3, there is shown a third embodiment of the seismic ceiling, figure (A) is near the end of the ceiling joist, the (B) the structure of the vicinity of the end portion of the receiving field edge It is shown.

  In the third embodiment, a rubber-like elastic material (rubber material or rubber-like elasticity is applied to the end of the pressing member 3 protruding from the end of the field edge 15 in the configuration of the second embodiment described above. A buffer 32 made of a synthetic resin material) is attached, and the end of the pressing member 3 is brought into contact with the side surface 201a of the receiving member 201 via the buffer 32, and the end of the field receiver 13 A shock absorber 42 made of a rubber-like elastic material is attached to the end portion of the pressing member 4 protruding from the portion, and the end portion of the pressing member 4 contacts the side surface 202a of the receiving member 202 via the shock absorber 42. It has been touched.

  And according to 3rd embodiment, in addition to the effect similar to 1st or 2nd embodiment, the horizontal force of the X direction or Y direction which arises on a ceiling at the time of an earthquake occurrence from pressing material 3 or 4 In the process of being transmitted to the side surface 201a or 202a of the receiving member 201 or 202, it is absorbed by the deformation of the buffer 32 or 42, so that the horizontal force acting on the ceiling is effectively relaxed. For this reason, it is possible to more effectively prevent the ceiling panel 2 from falling off the field edge 15 due to an impact or dropping from the field edge receiver 13 and falling off together with the ceiling panel 2. Can do.

  In the third embodiment, the buffer bodies 32 and 42 are in contact with the side surfaces 201a and 202a of the receiving members 201 and 202. However, the YZ-direction wall surface 200a of the housing wall 200 is not provided without the receiving members 201 and 202. And it can also be set as the structure contact | abutted to the XZ direction wall surface 200b.

Next, FIG. 4, there is shown a fourth embodiment of the seismic ceiling, figure (A) is near the end of the ceiling joist, the (B) the structure of the vicinity of the end portion of the receiving field edge It is shown.

  In the fourth embodiment, in the configuration of the first embodiment shown in FIG. 1 described above, as shown in FIG. As shown in FIG. 4 (B), the second pressing member 5 extending in the X direction and disposed between the ends of 15 is coupled to the field edge receiver 13 by a screw (not shown). A second pressing member 6 extending in the Y direction and positioned between the ends of adjacent field edge receivers 13 and 13 is coupled across a plurality of field edges 15 by screws and clips (not shown), The end portion of the second pressing member 5 in the X direction abuts against the YZ direction wall surface 200a of the casing wall 200, and the end portion of the second pressing member 6 in the Y direction contacts the XZ direction wall surface 200b of the casing wall 200. It comes in contact.

  According to the above configuration, the X-direction horizontal force generated on the ceiling when an earthquake occurs is located between the pressing member 3 attached to the end of the field edge 15 and the ends of the field edges 15 and 15. The pressing member 4 is transmitted to the frame wall 200 through both of the second pressing members 5 arranged in the manner described above, and for the horizontal force in the Y direction, Since it is transmitted to the frame wall 200 via both of the second pressing members 6 disposed between the end portions of the field edge receivers 13 and 13, the horizontal force is dispersed, and thus the ceiling and the frame wall 200 collisions are more reliably regulated.

  In the illustrated example, the second pressing material 5 in the X direction is alternately arranged in the field edge 15 and the Y direction, and the second pressing material 6 in the Y direction is an end portion of the field edge receivers 13 and 13. Although a plurality of the pressing members 5 and 6 are arranged in between, the number of the second pressing members 5 and 6 can be arbitrarily determined in consideration of the assumed maximum value of the horizontal force.

  Further, in the illustrated example, the pressing members 3 and 4 and the second pressing members 5 and 6 are in contact with the YZ direction wall surface 200a and the XZ direction wall surface 200b of the housing wall 200. As in the embodiment of the present invention, by attaching the receiving members 201 and 202 to the housing wall 200 and bringing the pressing members 3 and 4 and the second pressing members 5 and 6 into contact with the receiving members 201 and 202, It can also be set as the structure which disperse | distributes the stress by the horizontal force from the pressing materials 3 and 4. FIG.

  Moreover, it can also be set as the structure which attached the buffer bodies 32 and 42 like 3rd Embodiment shown in FIG. 3 to the pressing materials 3 and 4 and the 2nd pressing materials 5 and 6. FIG.

5 Next, there is shown a fifth embodiment of the seismic ceiling, figure (A) is near the end of the ceiling joist, the (B) the structure of the vicinity of the end portion of the receiving field edge It is shown.

  In the fifth embodiment, as shown in FIG. 5 (A), the X-direction pressing member 3 is made by cutting a material used as a field edge into an appropriate length, and the end thereof is used. In a state where the portion 3a is abutted against the YZ direction wall surface 200a of the housing wall 200, it is coupled and fixed to the field edge 15 via a nested joint member 33 having a U-shaped cross section and a plurality of screws 31, and FIG. As shown in Fig. 4, the Y-direction pressing member 4 is made by cutting a material used as a field edge holder into an appropriate length, and its end 4a is pushed into the XZ-direction wall surface 200b of the frame wall 200. In the applied state, it is coupled and fixed to the field receiver 13 via a nested joint member 43 having a U-shaped cross section and a plurality of screws 41.

And also in this case, as shown the sixth embodiment of the seismic ceiling 6, receiving member the pressing member 3 in the X direction, consisting of a light-gauge steel or the like attached to the YZ direction wall surfaces 200a of the skeleton wall 200 And a configuration in which the pressing member 4 in the Y direction is in contact with the side surface 202a of the receiving member 202 made of a lightweight steel frame or the like attached to the XZ direction wall surface 200b of the housing wall 200. By doing so, it is also preferable to disperse the stress due to the horizontal force from the pressing materials 3 and 4, and the pressing materials 3 and 4 are similar to those in the third embodiment shown in FIG. It can also be set as the structure which attached the buffer bodies 32 and 42. FIG.

DESCRIPTION OF SYMBOLS 1 Ceiling base material 11 Hanging bolt 12 Hanger 13 Field edge receiver 14 Clip 15 Field edge 2 Ceiling panel 3, 4 Pressing material 32, 42 Buffer body 5, 6 Second pressing material 200 Housing wall 200a YZ direction wall surface (ceiling Surrounding wall side receiving surface)
200b XZ direction wall surface (wall side receiving surface around the ceiling)
201, 202 Receiving material 201a, 202a Side surface (wall side receiving surface around the ceiling)

Claims (1)

A ceiling base material comprising a plurality of field edges and a plurality of field edge receivers coupled orthogonally to the field edges, a ceiling panel attached to the lower surface of the field edge, and a plurality of suspensions for supporting the field edge receivers In the ceiling with bolts,
The end of the whole or a part of receiving the field edge and ceiling joists, via a joint member of telescopic slides freely is inserted together with the end portion, the field edge and was inserted the telescopic joint A pressing material that is the same material as the material used as all or part of the field receiver is attached,
An earthquake-resistant ceiling, wherein an end portion of the pressing member fixed so as to protrude from the field edge and the field edge receiver via the joint member is in contact with a wall side receiving surface around the ceiling.

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