JP2015158051A - ceiling structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ceiling structure which attenuates vibrations transmitted between a skeleton and a ceiling board via a support member without inhibiting a vibration attenuation function of vibration-proof means, and which regulates relative lateral displacement of the skeleton and the ceiling board.SOLUTION: A ceiling 10 includes: suspension members 16 and 17 which are suspended from a skeleton 14 and which comprise vibration-proof means 18 for attenuating vibrations; a ceiling board 12 which is suspended by the suspension members 16 and 17; a support member 24 which is fixed to the skeleton 14 and extended out downward; and a connection member 30 which connects the ceiling board 12 and the support member 24 together, which attenuates the vibrations transmitted between the skeleton 14 and the ceiling board 12 via the support member 24 without inhibiting a vibration attenuation function of the vibration-proof means 18, and which regulates relative lateral displacement of the skeleton 14 and the ceiling board 12.

Description

  The present invention relates to a ceiling structure.

A ceiling board such as a music hall or a cinema complex has a vibration-proof function for suppressing vibration from the ceiling to the upper floor casing and vibration transmitted from the upper floor casing to the ceiling board (so-called fine vibration). This anti-vibration function is generally achieved by a structure in which the ceiling plate is suspended by a suspension member via rubber or the like. On the other hand, in order to give the ceiling plate having this structure an earthquake-resistant function, it is necessary to fix the ceiling plate to a frame or the like with an oblique member (brace) frame or the like in order to suppress shaking of the ceiling plate during an earthquake or the like.
However, if the ceiling plate is simply fixed to the housing with a support member or the like, the vibration isolation function is impaired. In addition, so-called micro vibrations are transmitted between the housing and the ceiling board via the support member.
For example, Patent Document 1 discloses a technique for suppressing vibrations transmitted from a casing to a ceiling board by dividing them into vertical vibrations and horizontal vibrations.

In Patent Document 1, a kite child, which is provided on the ceiling and to which various stage instruments are attached, is suspended from a vibration-isolating floating beam provided on the housing by a connecting member so as to suppress both longitudinal vibration and lateral vibration. It is a configuration to lower.
Here, the anti-vibration buoyant beam is provided in the direction crossing the girders between the upper girders. Further, the anti-vibration floating beam is installed on a projecting portion whose both ends are formed as girders, and a first anti-vibration rubber is provided between the upper surface of the projecting portion and the lower surface of the anti-vibration floating beam. ing. In addition, at both ends in the longitudinal direction of the anti-vibration floating beam, there is provided a second anti-vibration rubber that does not come into contact when the anti-vibration floating beam vibrates vertically but absorbs the horizontal vibration when the anti-vibration floating beam vibrates.

JP 09-88230 A

  However, in the technique of Patent Document 1, since the kite is suspended from the anti-vibration floating beam by the connecting member, even if the lateral movement during the earthquake is attenuated at the position of the anti-vibration floating beam, the kite child (ceiling) due to the pendulum phenomenon Plate) vibration (relative lateral movement of the frame and the ceiling plate) cannot be suppressed.

  In view of the above fact, the present invention attenuates the vibration transmitted between the casing and the ceiling board via the support member without impairing the vibration damping function of the vibration isolating means, and the relative lateral movement of the casing and the ceiling board. The purpose is to provide a regulated ceiling structure.

  The ceiling structure according to the first aspect of the present invention is a suspension member that is suspended from a housing and includes vibration-proofing means that attenuates vibration, a ceiling plate that is suspended by the suspension member, and is fixed to the housing. The support member extended downward, and the ceiling plate and the support member are connected to each other between the casing and the ceiling plate via the support member without impairing the vibration damping function of the vibration isolating means. And a connecting member that restricts relative lateral movement of the casing and the ceiling plate.

According to the first aspect of the present invention, the vibration transmitted between the housing and the ceiling plate is attenuated by the suspension member provided with the vibration isolating means, and the support member and the ceiling plate fixed to the housing and extending downward are provided. It is connected with a connecting member. Here, the connecting member attenuates the vibration transmitted between the housing and the ceiling plate via the support member without impairing the vibration damping function of the vibration isolating means provided in the suspension member, and the relative relationship between the housing and the ceiling plate is reduced. Restrict lateral movement.
As a result, the vibration transmitted between the housing and the ceiling plate via the support member is attenuated without inhibiting the vibration damping function of the vibration isolating means, and the relative lateral movement of the housing and the ceiling plate can be restricted. it can.

  According to a second aspect of the present invention, in the ceiling structure according to the first aspect, the connecting member includes an upper member joined to the support member, and a gap between the upper member and the upper member. A lower member that is disposed and joined to the ceiling plate, and connects the upper member and the lower member, attenuates vibrations transmitted between the upper member and the lower member, and And a vibration control mechanism for restricting the horizontal movement.

According to the second aspect of the present invention, the upper member is joined to the support member, the lower member is joined to the ceiling plate, and the upper member and the lower member are connected by the vibration control mechanism. Here, the vibration control mechanism attenuates the vibration transmitted between the upper member and the lower member, and restricts the relative lateral movement of the upper member and the lower member.
Thereby, the vibration transmitted between the upper member and the lower member is attenuated, and the relative lateral movement of the upper member and the lower member is restricted.

  According to a third aspect of the present invention, in the ceiling structure according to the second aspect, the vibration control mechanism includes a dowel projecting vertically from one of the lower member or the upper member, and a rubber bush surrounding the dowel. And a dowel receiving portion provided on the other of the lower member and the upper member and having an opening into which the rubber bush is inserted.

According to the invention described in claim 3, the dowel protruding in the longitudinal direction from one of the lower member and the upper member is surrounded by the rubber bush, and the opening of the dowel receiving portion provided on the other of the lower member and the upper member Inserted into.
Thereby, the vibration between the upper member and the lower member is allowed by the expansion and contraction of the gap between the dowel surrounded by the rubber bush and the opening of the dowel receiving portion and the rubber bush. On the other hand, the relative lateral movement between the upper member and the lower member is restricted.

  According to a fourth aspect of the present invention, in the ceiling structure according to any one of the first to third aspects, the support member is an oblique member extending obliquely from the housing.

  According to the fourth aspect of the present invention, the oblique member can prevent the crossing with the suspension member and can regulate the relative lateral movement of the frame and the ceiling panel.

  Since the present invention has the above-described configuration, the vibration transmitted between the casing and the ceiling board is attenuated via the support member without impairing the vibration damping function of the vibration isolating means, and the relative relation between the casing and the ceiling board is set. A ceiling structure that restricts lateral movement can be provided.

It is a front view which shows the basic composition of the ceiling structure which concerns on embodiment of this invention. It is the front view which expanded the connection member in the ceiling structure which concerns on embodiment of this invention. (A) is the perspective view which looked at the connection member from the back side, (B) is the perspective view which looked at the connection member from the front side. (A) is the sectional view on the AA line of FIG. 2, (B) is the sectional view on the BB line of FIG.

The ceiling structure according to the embodiment will be described with reference to FIGS.
As shown in the front view of FIG. 1, the ceiling 10 constituting the ceiling structure is a ceiling of a music hall, a cinema complex, or the like, and has suspension bolts (suspending members) 16 and 17 suspended from a housing 14 of the building. It is suspended.

  The ceiling board 12 is made of a general material such as a plaster board or a wooden board. The ceiling board 12 is attached to the field edge 20 at a predetermined interval, and the field edge 20 is fixed to a field edge receiver 22 provided in a direction intersecting the field edge 20. The field edge receiver 22 is suspended from the housing 14 by suspension bolts 16 and 17. Since the suspension bolt 17 is connected to the same position of the vibration control member (connection member) 30 and the field edge receiver 22 which will be described later, there is a difference in part configuration from the suspension bolt 16. However, the basic function is the same as that of the suspension bolt 16.

The upper end of the suspension bolt 16 is fixed to the housing 14 with an anchor bolt or the like (not shown), and a vibration isolating hanger (vibration isolating means) 18 is attached to the lower end to join the vibration isolating hanger 18 and the field edge receiver 22. The suspended metal fittings 50 are connected.
The suspension bolt 17 is divided into a suspension bolt 17U and a suspension bolt 17D in the vertical direction, and an upper end portion of the suspension bolt 17U is fixed to the housing 14 with an anchor bolt or the like (not shown), and a lower end portion of the suspension bolt 17D is a field edge receiver. 22 is connected to a hanging metal fitting 51 joined to 22. Further, an anti-vibration hanger 18 is provided between the lower end of the suspension bolt 17U and the upper end of the suspension bolt 17D.

  As shown in the enlarged view of FIG. 2, the anti-vibration hanger 18 has a hollow box portion 44, and the lower end portion of the suspension bolt 17 </ b> U is joined to the upper surface of the hollow box portion 44. The upper end of the suspension bolt 17D is joined. Inside the hollow box portion 44, a rubber member 46 that attenuates vibrations in the vertical direction is disposed. A through hole (not shown) is provided inside the rubber member 46, and the upper end portion of the suspension bolt 17 </ b> D is penetrated and fixed to the upper end portion of the rubber member 46.

  As a result, through the rubber member 46 at the position of the vibration isolator hanger 18, vibrations transmitted from the ceiling plate 12 to the housing 14 and vibrations transmitted from the housing 14 to the ceiling plate 12 (so-called fine vibration) are attenuated. Is done.

  A pair of braces (diagonal materials) 24 as support members are fixed to the housing 14. The pair of braces 24 are formed of steel (section steel), and the upper end portion is separated from two points (in FIG. 1, the same part as the fixing portion of the two adjacent hanging bolts 16 with the hanging bolts 17 sandwiched therebetween). , Each extending obliquely downward while narrowing the tip. Thereby, it can extend, avoiding crossing with the suspension bolts 16 and 17. FIG.

Both lower ends of the pair of braces 24 are connected to the vibration control member 30. The pair of braces 24 have rigidity that restricts lateral movement of the ceiling plate 12 during an earthquake, and moves the housing 14 and the vibration control member 30 integrally during an earthquake.
Here, the damping member 30 connects the ceiling plate 12 and the pair of braces 24, attenuates vibrations transmitted between the housing 14 and the ceiling plate 12 via the pair of braces 24, and also the housing 14 and the ceiling. The relative lateral movement of the plate 12 is restricted.

Next, a specific configuration of the vibration control member 30 will be described.
As shown in the enlarged view of FIG. 2, the vibration control member 30 has an upper member 26 and a lower member 26 arranged in the vertical direction. Both ends of the pair of braces 24 are joined to the upper member 26, and the field edge receiver 22 is joined to the lower member 28.

As shown in the perspective views of FIGS. 3 and 4, the upper member 26 is a steel plate and is formed in an L shape in a side view. One side 26H of the upper member 26 is disposed sideways, and the other side 26V is disposed vertically. The lower ends of the pair of braces 24 are fixed to the vertically oriented side 26 </ b> V.

The lower member 28 is a steel plate and is formed in a rectangular shape with a part missing in a side view. The opposing side 28T, which is arranged with the upper side 28H facing sideways and the central side 28V facing vertically and facing the central side 28V, is limited to both ends and has a smaller area than the central side 28V.
The upper side 28H is disposed opposite to the side 26H of the upper member 26 with a predetermined gap d. Further, the lower side 28D of the lower member 28 supports the bottom surface of the field edge receiver 22, and a part of the lower side 28D is folded back to be the opposing side 28T. The side edge 22 is sandwiched from both sides by the central side 28V and the opposite side 28T. Further, the central side 28V and the opposite side 28T, and the central side 28V and the field edge receiver 22 are fixed by screws 40.
Thereby, integration of the ceiling board 12 and the lower member 28 is achieved.

Further, a notch portion having a width W1 and a height H1 is formed at the center of the lower member 28. A suspension fitting 51 to be joined to the suspension member 17D is disposed in the notch.
As shown in FIG. 4 (A), the suspension fitting 51 has a lower end 51D bent into a U shape and supports the field receiver 22 at the U shape. The upper part 51U is bent in a direction away from the upper member 26 so as not to contact the upper member 26, and the hanging bracket 51 is joined to the hanging member 17D at the bent portion.

  In the gap d between the upper member 26 and the lower member 28, a vibration control unit (vibration) that attenuates vibration between the upper member 26 and the lower member 28 and restricts relative lateral movement between the upper member 26 and the lower member 28. Control mechanism) 32 is provided.

As shown in FIG. 4B, the vibration control unit 32 includes a dowel 34 that protrudes in the vertical direction (upward) from the upper side 28 </ b> H of the lower member 28, and a rubber bush 36 that surrounds the dowel 34. . The dowel 34 is attached to a mounting hole (not shown) of the upper side 28H and is fixed with a nut. The rubber bush 36 has a predetermined height and thickness, and surrounds the dowel 34.
On the side 26H of the upper member 26, there is provided a dowel receiving portion 38 in which an opening is formed, into which the rubber bush 36 is inserted. An adjustment plate 23 for aligning the dowel 34 is provided between the lower member 28 and the field edge receiver 22.
The dowel 34 may protrude in the vertical direction (downward) from the side 26H of the upper member 26, and the dowel receiving part 38 may be formed on the upper side 28H of the lower member 28.

As a result, the dowel 34 protruding in the vertical direction from the lower member 28 is inserted into the opening of the dowel receiving portion 38 provided in the upper member 26 while being surrounded by the rubber bush 36.
As a result, relative vibration between the upper member 26 and the lower member 28 is caused by expansion and contraction of the gap between the dowel 34 surrounded by the rubber bush 36 and the opening of the dowel receiving portion 38 and the rubber bush 36. Attenuated. On the other hand, the relative lateral movement between the upper member 26 and the lower member 28 is restricted.

  That is, the upper member 26 is joined to the pair of braces 24, the lower member 28 is joined to the field receiver 22 of the ceiling board 12, and vibration transmitted between the upper member 26 and the lower member 28 by the vibration control unit 32. And the relative lateral movement between the upper member 26 and the lower member 28 is restricted.

As described above, according to this configuration, the vibration between the housing 14 and the ceiling board 12 is attenuated by the suspension bolt 16 provided with the vibration-proof hanger 18.
Moreover, the vibration transmitted through the pair of braces 24 between the casing 14 and the ceiling board 12 without impeding the vibration damping function of the vibration-proof hanger 18 provided on the suspension bolt 16 by the damping member 30. And a ceiling structure that restricts the relative lateral movement of the casing 14 and the ceiling plate 12 can be provided.

  In the present embodiment, the suspension bolt 17 and the vibration control member 30 have been described as being mounted at the same position on the field edge receiver 22. However, the present invention is not limited to this, and the suspension bolt 17 and the vibration control member 30 may be attached separately.

  In the present embodiment, the pair of braces 24 that fix the upper member 26 are configured to protrude obliquely from the housing 14. However, the present invention is not limited to this, and the support member has rigidity that restricts the lateral movement of the ceiling plate 12 and can be moved in the member direction as long as the housing 14 and the vibration control member 30 can be moved integrally. May be in the vertical direction or the member shape may be bent.

  Further, in the present embodiment, the pair of braces 24 are configured to project obliquely from the same fixed position as the suspension member 16 provided on the housing 14. However, the present invention is not limited to this and may be fixed at a fixed position different from that of the suspension member 16.

10 Ceiling 12 Ceiling Panel 14 Building Body (Housing)
16 Hanging bolt (hanging member)
17 Hanging bolt (suspending member)
18 Anti-vibration hanger (anti-vibration means)
20 Field edge
22 Field edge receiver 24 Diagonal material (support member)
26 Upper member 28 Lower member 30 Damping member (connecting member)
32 Vibration control unit (vibration control mechanism)
34 Dowels 36 Rubber bush 38 Dowel receptacle

Claims (4)

A suspension member that is suspended from the housing and includes a vibration isolating means that attenuates vibrations;
A ceiling board suspended by the suspension member;
A support member fixed to the housing and extending downward;
The ceiling plate and the support member are connected, and the vibration transmitted between the casing and the ceiling plate is attenuated via the support member without impairing the vibration damping function of the vibration isolating means, and the casing and A connecting member for restricting relative lateral movement of the ceiling plate;
With ceiling structure. The connecting member is
An upper member joined to the support member;
A lower member disposed below the upper member with a gap between the upper member and joined to the ceiling plate,
A vibration control mechanism that connects the upper member and the lower member, attenuates vibration transmitted between the upper member and the lower member, and restricts relative lateral movement of the upper member and the lower member;
The ceiling structure according to claim 1. The vibration control mechanism includes a dowel protruding in a vertical direction from one of the lower member or the upper member;
A rubber bush surrounding the dowel;
A dowel receiving portion provided on the other of the lower member or the upper member and having an opening into which the rubber bush is inserted;
The ceiling structure according to claim 2.   The ceiling structure according to any one of claims 1 to 3, wherein the support member is a diagonal member extending obliquely from the housing.

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