JP2008138464A - Aseismatic ceiling structure, ceiling seismic response control device and installation method of ceiling seismic response control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an aseismatic ceiling structure capable of preventing a collision with a peripheral wall surface, by easily and surely restraining displacement of the ceiling in an earthquake. <P>SOLUTION: This aseismatic ceiling structure has a ceiling batten 12 suspended and held by a ceiling slab 28 via a suspension bolt 26, a cradling 14 installed in the cradling batten 12, and a ceiling material 16 installed in the cradling 14, and the ceiling seismic response control device 18 absorbing displacement of the ceiling material 16 in the earthquake, is interposed between an outer peripheral part of the ceiling material 16 and the wall surface 30 of a corresponding position. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an earthquake-resistant ceiling structure, a ceiling vibration control device, and a method for mounting the ceiling vibration control device that prevent a ceiling material from falling during an earthquake.

  Damage caused by earthquakes is mainly caused by buildings designed based on standards prior to the current new seismic design standards, but non-structural members such as ceilings are damaged regardless of the design period. .

  Non-structural members such as ceilings have been rarely studied for seismic resistance from the viewpoints of structure and materials.

  By the way, in recent years, the space behind the ceiling is often used as an installation space for various equipment such as an air conditioner. Therefore, a suspended ceiling structure that easily secures the space is often used.

  In such a suspended ceiling structure, it is usually arranged that a field receiver is suspended from a lower surface of a ceiling slab with a suspension bolt, a field edge is attached to the lower surface of the field edge receiver, and a ceiling material is attached to the lower surface of the field edge. (See Patent Document 1).

  In such a suspended ceiling, when the ceiling pocket is about 1.5 m or more, in order to prevent the ceiling member from shaking greatly during an earthquake, the lower end portion or the field of the suspension bolt adjacent to the upper end portion of the suspension bolt is used. A brace is disposed obliquely between the edge receiver.

In addition, by providing a clearance of about 10 cm inside and outside at the part where the ceiling end and the wall face, it is possible to prevent the ceiling from shaking greatly and colliding with the wall, damaging or dropping during an earthquake. ing.
JP 2004-308356 A

  When using the brace described above, since the brace is installed between the upper end portion of the suspension bolt and the lower end of the adjacent suspension bolt or between the field receivers, a member below the member whose movement is stopped by the brace, For example, the field edge or the field edge slides greatly.

  When the sliding width becomes larger than the clearance between the wall surface and the ceiling end, the ceiling and the wall surface collide, and when this is repeated, the collision part of the ceiling is damaged and finally falls.

  Also, if the ceiling surface shakes greatly while twisting in a plane, the clip that joins the field edge and the field edge will come off and the ceiling will fall, or the field edge will buckle and the ceiling material will join the field edge. Will fall out and the ceiling material will fall.

  An object of the present invention is to provide an earthquake-resistant ceiling structure, a ceiling vibration control device, and a method for mounting the ceiling vibration control device that can easily and surely suppress the displacement of the ceiling during an earthquake and prevent a collision with a surrounding wall surface. There is to do.

(1) In order to achieve the above object, the earthquake-resistant ceiling structure of the present invention includes a field edge receiver suspended from a ceiling slab via a suspension member, a field edge attached to the field edge receiver, and the field edge. And ceiling material attached to the
A ceiling vibration control device that absorbs the displacement of the ceiling material during an earthquake is interposed between the outer peripheral portion of the ceiling material and the wall surface at the corresponding position.

  According to the present invention, the ceiling vibration control device interposed between the outer periphery of the ceiling material and the wall surface at the corresponding position absorbs the displacement of the ceiling material at the time of the earthquake, thereby suppressing the displacement of the ceiling easily and reliably. Thus, a collision with the surrounding wall surface can be prevented.

  In addition, since the ceiling vibration control device is attached around the ceiling material, it can easily cope with the ceiling of an existing building simply by removing the surrounding ceiling material.

  (2) In the present invention, in (1), the ceiling vibration control device includes a ceiling-side attachment member attached to the ceiling material, a wall-surface-side attachment member attached to the wall surface, and the ceiling-side attachment member. It can have a viscoelastic material provided between the wall surface side attachment members.

  By adopting such a configuration, it is possible to provide a ceiling vibration control device having a simple structure in which a viscoelastic material is provided between the ceiling side mounting member and the wall surface side mounting member. A vibration control effect can be obtained.

  (3) In this invention, in (2), the flameproof plate which covers the side surface of the said viscoelastic material can be provided in one of the said ceiling side attachment member and the said wall surface side attachment member.

  By adopting such a configuration, it is possible to prevent the viscoelastic material from being affected by the flame when a fire occurs.

  (4) In the present invention, in (2) or (3), the ceiling vibration control device is an attachment for attaching the ceiling side attachment member to the upper surface side of the ceiling material with a screw from the ceiling material lower surface side. The panel may be integrally provided on the lower surface side of the ceiling side mounting member.

  With such a configuration, the ceiling vibration control device can be installed on the ceiling side by screwing the mounting panel through the ceiling material from the lower side of the ceiling, eliminating the work from the back side of the ceiling and facilitating the work. Can be done.

  (5) In the present invention, in (4), the mounting panel has a temporary placement installation jig for temporarily placing the ceiling vibration control device on the field edge adjacent to the field edge. can do.

  With such a configuration, the ceiling seismic control device can be temporarily placed only by placing the temporary placement jig on the field edge before attaching the ceiling material.

  (6) In the present invention, in (4) or (5), a jumping prevention jig for preventing jumping at the time of mounting panel installation is provided between the field edges of the mounting panel installation corresponding position. be able to.

  By adopting such a configuration, the upper surface of the mounting panel is restrained by a jumping prevention jig, so that the mounting panel jumps up and is screwed in when the screw is applied to the mounting panel from the lower surface side of the ceiling material upward. It is possible to prevent such a situation that it disappears, and to enable secure screwing.

  (7) In the present invention, in any one of (2) to (6), the wall surface is formed by a locking method in which a plurality of lightweight concrete panels are vertically attached, and the wall surface side mounting member is a plurality of lightweight concrete. It can be attached to a backing material bolted to the central ceiling level in the width direction of the panel.

  By adopting such a configuration, even if the wall has rocking behavior during an earthquake, the receiving material is bolted to the center of the lightweight concrete panel in the width direction, so that the upper and lower levels do not change and breakage occurs. Can be prevented.

  (8) The ceiling vibration control device of the present invention is provided between a ceiling side mounting member attached to a ceiling material, a wall surface side mounting member attached to a wall surface side, and the ceiling side mounting member and the wall surface side mounting member. And viscoelastic material.

  ADVANTAGE OF THE INVENTION According to this invention, it can be set as the ceiling damping device of the simple structure which provided the viscoelastic material between the ceiling side attachment member and the wall surface side attachment member, and also a reliable damping effect with a viscoelastic material Can be obtained.

  (9) In the present invention, in (8), an attachment panel for attaching the ceiling side attachment member to the upper surface side of the ceiling material with a screw from the lower surface side of the ceiling material is provided on the lower surface side of the ceiling side attachment member. It can have it integrally.

  With this configuration, the ceiling vibration control device can be installed by screwing the mounting panel through the ceiling material from the lower side of the ceiling, eliminating the work from the back of the ceiling and allowing easy operation It becomes.

(10) The method for mounting the ceiling vibration control device of the present invention includes a ceiling side mounting member that is mounted on a ceiling material, a wall surface side mounting member that is mounted on a wall surface side, and a space between the ceiling side mounting member and the wall surface side mounting member. A viscoelastic material provided on the bottom surface of the ceiling-side mounting member, a mounting panel for mounting the ceiling-side mounting member on the ceiling material, and a field edge of the mounting panel Installation of a ceiling vibration control device in which a ceiling vibration control device having a temporary placement installation jig attached to a side and temporarily placed on the field edge is interposed between an outer peripheral portion of the ceiling material and a wall surface at a corresponding position A method,
A step of temporarily placing the ceiling vibration control device on the field edge by hooking the temporary placement installation jig on the field edge;
Attaching the wall surface side mounting member to the wall surface;
Applying the ceiling material of the outer peripheral portion to the lower side of the field edge, and connecting the mounting panel and the ceiling material with screws from the lower surface side of the ceiling material;
It is characterized by including.

  According to the present invention, before the ceiling material of the outer peripheral portion is attached to the field edge, the ceiling vibration control device is temporarily placed on the field edge by the temporary placement installation jig, and in this state, the wall surface side mounting member is attached to the wall surface. The ceiling material is applied to the lower surface of the field edge, and a screw is applied to the mounting panel from the lower surface side of the ceiling material, so that the operation from the back side of the ceiling can be eliminated and the operation can be easily performed.

  (11) In the present invention, in (10), after the ceiling vibration control device is temporarily placed between the field edges, the spring-up at the time of mounting panel mounting is prevented between the field edges corresponding to the mounting panel installation corresponding positions. It is possible to provide a jump-up preventing jig.

  By adopting such a configuration, the upper surface of the mounting panel is restrained by a jumping prevention jig, so that the mounting panel jumps up and is screwed in when the screw is applied to the mounting panel from the lower surface side of the ceiling material upward. It is possible to prevent the state of being lost and to secure the screw.

  Preferred embodiments of the present invention will be described below with reference to the drawings.

  1-9 is a figure which shows the earthquake-resistant ceiling structure which concerns on one embodiment of this invention.

  FIG. 1 is a plan view of an earthquake-resistant ceiling structure according to the present embodiment. This earthquake-resistant ceiling structure 10 includes a field edge receiver 12, a field edge 14, and a ceiling material 16 (including a lower ceiling material 62). And a ceiling vibration control device 18.

  A plurality of the field edge receivers 12 are suspended and held on the ceiling slab 28 at predetermined intervals via suspension bolts 26 (see FIGS. 5 to 9) as suspension members.

  A plurality of the field edges 14 are fixedly attached to the lower surface side of the field edge receiver 12 at a predetermined interval in a state of being substantially orthogonal to each field edge receiver 12 and straddling each field edge receiver 12.

  As shown in FIG. 3, the ceiling material 16 is attached and fixed to the lower surface side of the field edge 14 with screws or the like to form a ceiling surface having a predetermined area.

  As shown in FIG. 2 and FIG. 3, a predetermined interval is provided between the end of the ceiling material 16 located on the outer peripheral portion of the ceiling surface and the wall surface 30 in order to avoid a collision between the ceiling material 16 and the wall surface 30. A gap 32 is provided.

  Further, the gap 32 between the end of the ceiling material 16 and the wall surface 30 is covered with a peripheral edge 34 attached to the wall surface 30 side.

  The ceiling vibration control device 18 is interposed between the outer peripheral portion of the ceiling material 16 and the wall surface 30 at the corresponding position, and can absorb the displacement of the ceiling material 16 during an earthquake.

  As shown in FIG. 1, a plurality of the ceiling vibration control devices 18 are arranged at predetermined intervals on each side of the wall surface 30.

  Specifically, as shown in FIGS. 2 and 3, the ceiling vibration control device 18 includes a ceiling-side attachment member 36 made of a flat plate attached to the ceiling material 16 and a flat plate attached to the wall surface 30 side. And a viscoelastic material 24 that is a high damping material provided between the ceiling side mounting member 36 and the wall surface side mounting member 38.

  An attachment panel 40 that can be fitted between the field edges 14 is integrally attached to the lower surface of the ceiling side attachment member 36.

  The mounting panel 40 is made of a wood-based material such as plywood, and is integrated with the ceiling material 16 by placing the ceiling material 16 on the lower surface side and driving a screw 42 from the lower surface side of the ceiling material 16 toward the mounting panel 40. It has come to be.

  Therefore, the ceiling side mounting member 36 of the ceiling vibration control device 18 can be mounted by passing the screws 42 to the mounting panel 40 through the ceiling material 16 from the lower side of the ceiling, and the work from the back side of the ceiling is eliminated and the operation is easily performed. It becomes possible.

  Further, as shown in FIG. 2, the mounting panel 40 includes a plurality of temporary placement installation jigs 44 for temporarily placing the ceiling vibration control device 18 on the field edge 14 adjacent to the field edge 14, for example, Provided at four locations, the ceiling vibration control device 18 can be temporarily placed by simply placing the temporary placement installation jig 44 on the field edge 14 before the ceiling material 16 is attached.

  Further, a jumping prevention jig 46 for preventing the jumping up when the mounting panel 40 is mounted is provided between the field edges 14 at the installation corresponding positions of the mounting panel 40. By restraining the upper surface, the state where the mounting panel 40 jumps up and the screw 42 cannot be driven when the screw 42 is pushed onto the mounting panel 40 upward from the lower surface side of the ceiling material 16 is prevented, and secure screwing is performed. It is possible.

  The wall surface side attachment member 38 is attached by bolts 50 to an adjustment receiving member 48 that is horizontally attached to the ceiling attachment position of the wall surface 30.

  For example, a channel material is used as the receiving member 48 for adjustment, and a loose hole (not shown) extending in the vertical direction is provided in the mounting piece on the wall surface 30 side. The height of the member 38 can be adjusted.

  Further, as shown in FIG. 4, the wall surface 30 is formed by a plurality of lightweight concrete panels 54 such as ALC by a vertically attached rocking method, and an adjustment support is provided at the center ceiling level in the width direction of the plurality of lightweight concrete panels 54. The material 48 is bolted.

  In this way, by bolting the adjustment receiving material 48 to the central ceiling level in the width direction of the plurality of lightweight concrete panels 54, the upper and lower levels of the adjustment receiving material 48 even if the wall surface 30 is rocked during an earthquake. This prevents the change in the ceiling vibration control device 18 from being damaged.

  The viscoelastic material 24 is made of, for example, high damping rubber or the like, and constitutes a viscoelastic damper sandwiched between two upper and lower metal plates 20, and each metal plate 20 is a ceiling side mounting member 36. And it attaches to the wall surface side attachment member 38. FIG.

  The viscoelastic material 24 may be bonded to the metal plate 20 using an adhesive, or may be integrated with the metal plate 20 when the viscoelastic material 24 is vulcanized.

  By using such a viscoelastic damper, the seismic energy applied to the ceiling member can be reduced by shear deformation of the viscoelastic material 24.

  Therefore, the ceiling vibration control device 18 absorbs the displacement of the ceiling material 16 at the time of the earthquake, so that the displacement of the ceiling can be suppressed easily and reliably and the collision with the surrounding wall surface 30 can be prevented.

  For this reason, the gap 32 between the end of the ceiling material 16 and the wall surface 30 can be reduced, and the peripheral edge 34 can also be reduced.

  Further, two L-shaped flameproof plates 56 and 58 that cover the side surfaces of the viscoelastic material 24 are provided on the upper and lower surfaces of the wall surface side attachment member 38, and the viscoelastic material 24 is affected by the flame when a fire occurs. I try to prevent it.

  Next, a method for attaching such a ceiling vibration control device will be described with reference to FIGS.

  First, as shown in FIG. 5, the adjustment receiving member 48 is attached to the ceiling forming position of the wall surface 30, and the suspension bolt 26 is attached to the ceiling slab 28 to be in a suspended state.

  Next, as shown in FIG. 6, the field edge receiver 12 is attached to the lower end of the suspension bolt 26 to be suspended from the ceiling slab 28, and the field edge 14 is attached to the field edge receiver 12 at a predetermined interval in an orthogonal state.

  In this state, the ceiling vibration control device 18 is assembled in a state where it can be installed.

  In this case, it is preferable to attach a flameproof iron plate 60 to the upper surface of the mounting panel 40 so that the height of the field edge 14 and the height on the mounting panel 40 side coincide.

  Next, as shown in FIG. 7, the temporary placement installation jig 44 attached to the attachment panel 40 is placed on the field edge 14 at the position of the outer periphery of the ceiling, and the ceiling vibration control device 18 is placed between the field edges 14. Install temporarily.

  In this state, the wall surface side attachment member 38 is attached to the adjustment receiving member 48 with the bolt 50 while adjusting the height of the adjustment receiving member 48.

  Next, as shown in FIG. 8, a jumping prevention jig 46 for preventing the jumping up when the mounting panel 40 is mounted is provided between the field edges 14 at the installation corresponding positions of the mounting panel 40. The upper surface of the mounting panel 40 is suppressed by.

  In this state, the lower pasted ceiling material 62 is applied to the lower surface of the field edge 14, and the lower pasted ceiling material 62 and the mounting panel 40 are attached to the mounting panel 40 with screws 42 from the lower surface side of the lower pasted ceiling material 62 upward. Integrate.

  In this case, since the mounting panel 40 is restrained from above by the spring-up preventing jig 46, it does not jump up.

  Then, as shown in FIG. 9, the finishing ceiling material 16 is applied to the lower surface of the lower ceiling material 62 and integrated from the lower surface side.

  It is not necessary to perform the work of attaching the lower ceiling material 62 and the ceiling material 16 for finishing, and the work can be easily performed.

  Finally, the gap 32 between the wall surface and the ceiling material 16 may be covered with the peripheral edge 34.

  The present invention is not limited to the above-described embodiment, and can be modified into various forms within the scope of the gist of the present invention.

  For example, although the case where a viscoelastic damper was used as a ceiling damping device was shown in the said embodiment, it is not restricted to this example, An oil damper, rubber | gum, etc. can also be used.

It is a top view which shows the earthquake-resistant ceiling structure concerning one embodiment of this invention. FIG. 2 is an enlarged plan view of a ceiling vibration control device portion in the earthquake-resistant ceiling structure of FIG. 1. It is an expanded sectional view of the ceiling damping device part of FIG.1 and FIG.2. It is a front view which shows the attachment position to the wall surface of a wall surface side attachment member. It is sectional drawing which shows attachment of the receiving material for adjustment and a suspension bolt at the time of attachment of a ceiling damping device. It is sectional drawing which shows the attachment state of a field edge receiver and a field edge from the state of FIG. It is sectional drawing which shows the installation state of a ceiling damping device from the state of FIG. It is sectional drawing which shows the attachment state of the bottom bonding ceiling material from the state of FIG. It is sectional drawing which shows the state which finishes from the state of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Earthquake-resistant ceiling structure 12 Field edge receiver 14 Field edge 16 Ceiling material 18 Ceiling damping device 24 Viscoelastic material 26 Hanging bolt 28 Ceiling slab 30 Wall surface 32 Clearance 36 Ceiling side mounting member 38 Wall surface side mounting member 40 Mounting panel 44 Temporary placement installation Jig 46 Splash prevention jig 54 Lightweight concrete panels 56, 58 Flameproof plate

Claims (11)

A field receiver that is suspended and held from a ceiling slab via a suspension member, a field edge that is attached to the field edge receiver, and a ceiling material that is attached to the field edge,
A seismic resistant ceiling structure characterized in that a ceiling seismic control device that absorbs displacement of the ceiling material during an earthquake is interposed between an outer peripheral portion of the ceiling material and a wall surface at a corresponding position. In claim 1,
The ceiling vibration control device includes a ceiling-side attachment member attached to the ceiling material, a wall-side attachment member attached to the wall surface, and a viscoelasticity provided between the ceiling-side attachment member and the wall-surface attachment member. An earthquake-resistant ceiling structure characterized by having a material. In claim 2,
An earthquake-resistant ceiling structure, wherein a flameproof plate that covers a side surface of the viscoelastic material is provided on one of the ceiling side mounting member and the wall surface side mounting member. In claim 2 or 3,
The ceiling vibration control device has a mounting panel for mounting the ceiling side mounting member on the upper surface side of the ceiling material with screws from the lower surface side of the ceiling material integrally on the lower surface side of the ceiling side mounting member. Characteristic earthquake-resistant ceiling structure. In claim 4,
The said installation panel has a temporary placement installation jig | tool for temporarily placing the said ceiling damping device in the said field edge in the adjacent edge with the said field edge. In claim 4 or 5,
An anti-seismic ceiling structure characterized in that a jumping prevention jig for preventing a jumping at the time of mounting panel installation is provided between the field edges of the mounting panel installation corresponding position. In any one of Claims 2-6,
The wall surface is formed by a locking method in which a plurality of lightweight concrete panels are vertically attached,
The said wall surface side attachment member is attached to the receiving material bolted to the width direction center ceiling level of the some lightweight concrete panel, The earthquake-resistant ceiling structure characterized by the above-mentioned.   It has a ceiling side attachment member attached to a ceiling material, a wall surface side attachment member attached to a wall surface side, and a viscoelastic material provided between the ceiling side attachment member and the wall surface side attachment member. Ceiling damping device. In claim 8,
A ceiling seismic control device comprising a mounting panel for mounting the ceiling side mounting member on the upper surface side of the ceiling material from the lower surface side of the ceiling material with a screw integrally on the lower surface side of the ceiling side mounting member . A ceiling side attachment member attached to the ceiling material, a wall surface side attachment member attached to the wall surface side, a viscoelastic material provided between the ceiling side attachment member and the wall surface side attachment member, and the ceiling side attachment member A temporary panel that is integrally provided on the lower surface side and is attached to an adjacent side of the mounting panel for attaching the ceiling-side mounting member to the ceiling material and temporarily placed on the field edge. A ceiling vibration control device mounting method for interposing a ceiling vibration control device having a placement installation jig between an outer peripheral portion of the ceiling material and a wall surface at a corresponding position,
A step of temporarily placing the ceiling vibration control device on the field edge by hooking the temporary placement installation jig on the field edge;
Attaching the wall surface side mounting member to the wall surface;
Applying the ceiling material of the outer peripheral portion to the lower side of the field edge, and connecting the mounting panel and the ceiling material with screws from the lower surface side of the ceiling material;
A method for mounting a ceiling seismic control device comprising: In claim 10,
After temporarily placing the ceiling vibration control device between the field edges, a jumping prevention jig for preventing jumping at the time of mounting panel installation is provided between the field edges of the mounting panel installation corresponding position. How to install a ceiling seismic control device.

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