JPH10115043A - Ceiling structure for unit building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the propagation of floor impulsive sound from upstairs to downstairs by suspending ceilings for a building unit on main floor beams for an upstairs unit via vibration proof materials and layering the upstairs unit on a downstairs unit to form the ceilings. SOLUTION: Ceilings 21, 31, 41 for a building unit on the first floor are suspended on grooved steel main floor beams 52, 62, 72 for a building unit on the second floor via vibration proof rubber supports 22, 32, 33, 42. A vibration proof rubber support 34 is also mounted between a floor joist provided between the main floor beams on the second floor and a ceiling joist on the first floor to increase the rigidity at the center of the ceiling 31 and prevent the amplification of vibration. The building unit on the second floor is arranged on the building unit on the first floor parallelly provided on a ground to form the ceilings on the first floor at the same time during installation. Impulsive sound generated on upstairs is thus dispersed to downstairs and reduced in propagation. In this way, floor noise is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling structure of a unit building which reduces the propagation of floor impact noises on floors to floors.

[0002]

2. Description of the Related Art A ceiling hanger equipped with a sound insulation device for preventing a floor impact sound generated on a floor from being transmitted downstairs is disclosed in Japanese Patent Application Laid-Open No. 60-1985.
No. 112950. The ceiling hanger described in the above-mentioned publication blocks vibration noise by inserting a cushioning material between an upper floor slab or a two-layer ceiling and a field edge receiving rail.

[0003] However, the prior art described in the above publication has a problem that the effect of blocking the impact vibration against heavy floor impact noise (particularly, steel frame-based or wooden-based houses) is extremely small.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and is intended to reduce the propagation of floor impact sounds on floors to floors. It is an object to provide a ceiling structure.

[0005]

According to the first aspect of the present invention,
In a ceiling structure of a unit building in which an upper-floor building unit is installed on a lower-floor building unit, the ceiling of the lower-floor building unit has a floor girder adjacent to the upper-floor building unit immediately above the lower-floor building unit. It is suspended from. If the downstairs building unit is the first floor, the upstairs building unit is the second floor, if the downstairs building unit is the first basement floor, the upstairs building unit is the first floor, and if the downstairs building unit is the second floor, The upper building unit is on the third floor.

According to a second aspect of the present invention, in a ceiling structure of a unit building in which an upper building unit is installed on a lower building unit, the ceiling of the lower building unit is directly above the lower building unit. The unit is suspended from a floor girder of an upper building unit adjacent to the unit and a floor joist spanned between the floor girder of the immediately upper building unit.

According to a third aspect of the present invention, a ceiling structure of a unit building according to any one of claims 1 and 2, wherein the ceiling of the downstairs building unit is suspended via a vibration-proof material. It is.

(Operation) In the ceiling structure of a unit building according to claim 1, the ceiling of the lower building unit is suspended from a floor beam of the upper building unit immediately above the lower building unit and the adjacent upper building unit. Therefore, the floor impact sound generated in the upper building unit is distributed to the lower building unit immediately below the upper building unit and adjacent lower building units on both sides. Therefore, the propagation of the floor impact sound of the upper building unit to the lower building unit can be reduced.

The ceiling structure of a unit building according to claim 2, wherein the ceiling of the lower-floor building unit is suspended from the floor beam of the upper-floor building unit immediately above the lower-floor building unit and the adjacent upper-floor building unit. Therefore, for the same reason as described in claim 1, it is possible to reduce the propagation of the floor impact sound of the upper building unit to the lower building unit. At the same time, the ceiling of the lower building unit is also suspended from the floor joist spanned between the floor girders of the upper building unit immediately above it. Prevents the vibration of the part from being amplified. As a result, the propagation of the floor impact sound of the upper building unit to the lower building unit can be further reduced.

[0010] The third aspect of the present invention is the first or second aspect.
In the ceiling structure of a unit building according to any one of the above, since the ceiling of the downstairs building unit is suspended via a vibration-proof material, the ceiling structure of the upstairs building unit is moved to the downstairs building unit of floor impact sound. Can be further reduced.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIGS. 1 to 4 show an embodiment of the present invention. FIG. 1A is a plan view of a ceiling structure of a unit building viewed from below, and FIG. FIG. 2A is an enlarged sectional view of a portion A in FIG. 1B, and FIG.
(B) FIG. 3 is an enlarged perspective view of a portion B, FIG. 3 is a perspective view of a support with a vibration-proof rubber, and FIG. 4 is an explanatory view of a unit building.

Reference numeral 1 denotes a unit building;
The floor building units 5, 6, 7 are second floor building units. 21, 31 and 41 are ceilings of the first-floor building units 2, 3 and 4, respectively, and 51, 61 and 71 are floors of the second-floor building units 5, 6 and 7, respectively. 52, 6
Numerals 2 and 72 denote floor girders of the second-floor building units 5, 6, and 7, respectively, and all 22, 32, 33, 34, and 42 support members with vibration-proof rubber. 31a is the ceiling joist, 61a
Is a floor joist, and 8 is a joint for connecting adjacent building units.

As shown in FIG. 4, a unit building 1 according to the present invention comprises a first-floor building unit 2 installed in parallel,
The second-floor building units 5, 6, and 7 are installed on 3 and 4. The building unit may be made of steel or wood, and may be a framed construction method or a wall construction method. In the case of the wall construction method, a floor girder is used for a floor support.

In the unit building 1, as shown in FIG. 1, the left side of the ceiling 31 of the first-floor building unit 3 (having a panel shape in which a ceiling panel is attached to a rectangular frame). The rim is formed from the floor beam 52 (made of C-type steel) of the second-floor building unit 6 immediately above the first-floor building unit 3 and the second-floor building unit 5 adjacent to the left.
2 is suspended. The support members 32 with rubber vibration insulators are attached at four positions along the floor girders 52. Further, the right edge of the ceiling 31 of the first-floor building unit 3 is protected from the floor girders 72 (made of C-type steel) of the second-floor building unit 6 immediately above the first-floor building unit 3 and the right adjacent second-floor building unit 7. It is suspended via a support 33 with a vibration rubber. The support 33 with the rubber cushion is also provided with the floor girders 52.
Attached at four places along.

On the other hand, the right edge of the ceiling 21 of the first-floor building unit 2 facing the outside is the floor girder of the second-floor building unit 6 immediately above the first-floor building unit 2 and the right-floor second-floor building unit 6. It is suspended from 62 to 4 support members 22 with rubber vibration insulators. Also, the first floor building unit 2
The left edge of the ceiling 21 (the side located on the outdoor side) of the ceiling 21 is not shown in the figure, but is supported from the floor girders 52 of the second-floor building unit 5 directly above the first-floor building unit 2 via a support with vibration isolating rubber. Hanging.

In the same manner as described above, the left edge of the ceiling 41 of the first-floor building unit 4 facing the outside faces the second-floor building unit 7 immediately above the first-floor building unit 4 and the second-floor building unit 6 adjacent to the left. It is suspended from the floor girders 62 via four supports 42 with vibration-proof rubber. In addition, the right edge of the ceiling 41 of the first-floor building unit 4 (the side located on the outdoor side)
Although not shown, it is suspended from the floor girders 72 of the second-floor building unit 7 immediately above the first-floor building unit 4 via a support with a vibration-proof rubber.

The center of the ceiling 31 of the first-floor building unit 3 is connected to the floor girder 6 of the second-floor building unit 6 immediately above.
It is suspended from the floor joist 61a spanned between the two via two support members 34 with vibration-proof rubber. The ceiling 21 of the first-floor building unit 2 and the first-floor building unit 4
The ceiling 41 is also not shown in the figure, but the center is suspended from the floor joist via a support with a vibration isolating rubber, as described above. Further, both side edges of the ceiling 21 are suspended via supports 22 with anti-vibration rubber, and both sides of the ceiling 41 are suspended via supports 42 with anti-vibration rubber.

Each of the supports 22, 32, 33, 34, and 42 with a vibration-proof rubber used in the above-described embodiment has a structure as shown in FIG. Supporting device 22 with anti-vibration rubber
As an example, the support 2 with the vibration-proof rubber
2 is an anti-vibration rubber body 22 made of synthetic rubber having a substantially cubic shape.
b (vibration isolating material) and steel plate supporting pieces 22a, 22a attached to both sides of the vibration isolating rubber main body 22b. The supporting piece 22a is joined to the vibration isolating rubber main body 22b with an adhesive or the like.
The upper or lower part of the support piece 22a protrudes.

The supports 22, 32,...
The details of the mounting structure are as shown in FIG. For example, in the case of the support member 33 with a vibration proof rubber, as shown in FIG. 2A, one support piece 33a is fixed to the floor girder 72 with screws, and the other support piece 33a is attached to the side edge of the ceiling 31. The ceiling 31 is suspended from the floor girders 72 by screws. In the case of the support member 34 with a vibration-proof rubber, as shown in FIG.
Is fixed to the floor joist 61a with screws, and the other support piece 34a
Is fixed to the ceiling joist 31a of the ceiling 31 with screws, whereby the central portion of the ceiling 31 is suspended from the floor joist 61a.

Next, a method of attaching the ceilings 21, 31, 41 in the unit building 1 of the present embodiment will be described.
First, the supports 22, 32, 33, 34, 4
2 are all attached to predetermined positions of the second-floor building units 5, 6, 7 in advance. After installing the first-floor building units 2, 3, and 4, two units are placed on the first-floor building units 2, 3, and 4.
The floor building units 5, 6, 7 are installed.

Next, the ceilings 21, 31, and 41 of the first-floor building units 2, 3, and 4 are attached to the supports 22, 32,
.. suspended through the ceilings 21, 31,
41 is a frame only without a ceiling surface material. Then, after suspending the frames of the ceilings 21, 31, 41 via the support members 22, 32,... With vibration-proof rubber, a ceiling surface material is attached to the frames, and the ceilings 21, 31,
Finish 41. Instead of the above mounting method, the ceilings 21, 31, and 41 are temporarily fixed under the floors of the second-floor building units 5, 6, and 7, and the second-floor building units 5, 6, and 7 are fixed to one.
After being installed on the floor building units 2, 3, and 4, the mounting method may be such that the temporary fixing is released by being supported by the support with the vibration-proof rubber.

In the ceiling structure of the unit building 1 of this embodiment, taking the ceiling 31 of the first-floor building unit 3 as an example, the ceiling 31 is adjacent to the second-floor building unit 6 immediately above the first-floor building unit 3. Floor girders 5 for floor units 5 and 7
The floor impact sound generated in the second-floor building units 5, 6, and 7 is distributed and transmitted downstairs because it is suspended from the second and second floors 72. As a result, propagation to the first-floor building unit 3 can be reduced. it can. The same applies to the other first-floor building units 2 and 4. At the same time, the ceiling 31 of the first-floor building unit 3 is directly above the floor girders 62 of the second-floor building unit 6.
Since it is also suspended from the floor joist 61a bridged therebetween, the rigidity of the central portion of the ceiling 31 is increased, thereby preventing the vibration of the central portion of the ceiling 31 from being amplified.
As a result, the floor impact sound of the second-floor building units 5, 6, 7
Propagation to the floor building unit 3 can be further reduced.

In the ceiling structure of the unit building 1 of the present embodiment, the ceilings 21 of the first-floor building units 2, 3, and 4 are provided.
31 and 41 are suspended via the vibration isolating members of the support members 22, 32,.
Propagation of the floor impact sound of the floor building units 5, 6, 7 to the first floor building units 2, 3, 4 can be further reduced.

[0025]

According to the ceiling structure of the unit building according to the first aspect, the ceiling of the lower building unit is suspended from the floor beam of the upper building unit immediately above the lower building unit and the adjacent upper building unit. Because
The floor impact sound generated in the upper building unit is distributed to the lower building unit immediately below the upper building unit and adjacent lower building units on both sides. Therefore, the propagation of the floor impact sound of the upper building unit to the lower building unit can be reduced.

[0026] In the ceiling structure of a unit building according to claim 2, the ceiling of the downstairs building unit is suspended from a floor beam of the upper building unit immediately above the downstairs building unit and an adjacent upper building unit. Therefore, for the same reason as described in claim 1, it is possible to reduce the propagation of the floor impact sound of the upper building unit to the lower building unit. At the same time, the ceiling of the lower building unit is also suspended from the floor joist spanned between the floor girders of the upper building unit immediately above it. Prevents the vibration of the part from being amplified. As a result, the propagation of the floor impact sound of the upper building unit to the lower building unit can be further reduced.

The third aspect of the present invention is the first or second aspect.
In the ceiling structure of a unit building according to any one of the above, since the ceiling of the downstairs building unit is suspended via a vibration-proof material, the ceiling structure of the upstairs building unit is moved to the downstairs building unit of the floor impact sound of the upstairs building unit. Can be further reduced.

[Brief description of the drawings]

FIG. 1 is an embodiment of the present invention, in which FIG. 1A is a plan view of a ceiling structure of a unit building viewed from below, and FIG. 1B is a cross-sectional view of the ceiling structure shown in FIG. It is.

FIG. 2A is an enlarged sectional view of a portion A in FIG.
(B) The figure is an enlarged perspective view of part B.

FIG. 3 is a perspective view of a support with a vibration-proof rubber.

FIG. 4 is an explanatory diagram of a unit building.

[Explanation of symbols]

1 unit building 2, 3, 4 1st floor building unit 5, 6, 7 2nd floor building unit 21, 31, 41 1st floor building unit ceiling 51, 61, 71 2nd floor building unit floor 52, 62, 72 2nd floor Floor girder of building unit 22, 32, 33, 34, 42 Supporting device with vibration-proof rubber 31a Ceiling joist 61a Floor joist

Claims (3)

[Claims] In a ceiling structure of a unit building in which an upper-floor building unit is installed on a lower-floor building unit, the ceiling of the lower-floor building unit has an upper floor adjacent to the upper-floor building unit immediately above the lower-floor building unit. A ceiling structure of a unit building, which is suspended from a floor beam of the building unit. 2. In a ceiling structure of a unit building in which an upper-floor building unit is installed on a lower-floor building unit, the ceiling of the lower-floor building unit is located on the upper floor adjacent to the upper-floor building unit immediately above the lower-floor building unit. A ceiling structure of a unit building, which is suspended from a floor beam of a building unit and a floor joist spanned between floor beams of a building unit immediately above the floor. 3. The ceiling structure of a unit building according to claim 1, wherein the ceiling of the downstairs building unit is suspended via a vibration isolator.