JP6325822B2 - Building structure of apartment house with double floor structure - Google Patents

Description

  The present invention relates to a building structure of an apartment house having a double floor structure.

In recent years, in various buildings of apartment houses, there are many double floor structures in which a plurality of floor supports equipped with vibration-proof members are arranged on the foundation floor and a plurality of floor boards are laminated on these floor supports. It has been adopted.
In such a double floor structure, as shown in FIG. 5, a plurality of floor supports 20 including a vibration isolating material 20 a having cushioning properties are arranged on a floor slab 11 which is a basic floor, and these floor supports are provided. A floor material 12 formed by laminating a plurality of plates is disposed on the tool 20 via a pedestal 20c, and an air communication path (gap) 12s of about 2 mm is provided between the floor material 12 and the wall 4. Thus, vibration generated when an impact is applied to the flooring 12 is reduced (see, for example, Patent Document 1).

JP 2000-104393 A

By the way, in an apartment house, it is desired to use the building height effectively. That is, if the number of floors can be increased without changing the building height and the room height, the building height can be used effectively.
However, it is not preferable in terms of strength to reduce the thickness of the floor slab.
In addition, it is conceivable to shorten the interval between the flooring and the floor slab, but it is necessary to arrange a pipe such as a drain pipe between the flooring and the floor slab. It is difficult to make the interval (floor finish height) shorter than the current interval (about 130 mm).

  This invention is made | formed in view of the said problem, and it aims at providing the building structure which can use building height effectively in the apartment house which has a double floor structure.

In the present invention, a plurality of floor supports provided with vibration isolation members are disposed on a foundation floor supported by a large beam, a floor material composed of a plurality of floor boards is disposed on the floor support, and the floor material and the wall surface are disposed. The building structure of an apartment house having a double floor structure with a predetermined gap between the upper surface of the main beam and the upper surface of the foundation floor below the upper surface of the main beam by a preset length. The foundation floor is supported so as to be positioned, and the girder is arranged so that the upper surface approaches the lower surface side of the floor material by the preset length, and between the girder and the floor material A short floor support whose height is lower than the height of the floor support by a preset length dimension is disposed, and the short floor support is provided with a vibration isolating rubber installed on a base floor, A pedestal that comes into contact with the lower surface of the flooring, and an external thread is formed on the outer peripheral surface, A screw hole into which the screw member is screwed, and the anti-vibration rubber can be stored on the anti-vibration rubber side of the pedestal. A concave portion is provided, and the diameter dimension of the screw hole is smaller than the width dimension of the anti-vibration rubber .
Accordingly, the height per floor of the apartment house can be shortened by a preset length without changing the building height and the indoor height, so that the building height can be used effectively.
Further, by using the short floor support tool having the above-described configuration between the large beam and the floor material , the floor material can be supported in a state in which a part of the vibration-proof rubber as the vibration-proof member is housed in the pedestal. Since it did in this way, even if the space | interval of a big beam and a flooring is short, while being able to support a flooring reliably, the fall of sound insulation performance can be prevented.

  The summary of the invention does not list all necessary features of the present invention, and sub-combinations of these feature groups can also be the invention.

It is a figure which shows an example of the building structure of the apartment house which has a double floor structure concerning this Embodiment. It is principal part sectional drawing which shows the support structure of the double floor which concerns on this Embodiment. It is a figure which shows an example of a floor support tool. It is a figure which shows the apartment house which has the building structure of this invention. It is principal part sectional drawing which shows the support structure of the conventional double floor.

Drawing 1 (a) and (b) is a figure showing an example of building 1 of an apartment house which has a double floor structure, (a) figure is a top view and (b) figure is AA of figure (a). It is sectional drawing.
In this example, the building 1 of the apartment house has a configuration in which a plurality of residences 2 surround the perforations 3. In the figure, 4 is a wall separating each residence 2, 5 is a common corridor, 6 is a veranda provided for each residence 2, 7 is a staircase, 8 is an elevator hall, and 9a to 9c are elevators.
As shown in FIG. 2, the building 1 is arranged between a floor slab 11 as a foundation floor, a floor material 12 constituting a floor in a residence, and a plurality of the floor slab 11 and the floor material 12. It has the double floor structure 10 comprised from the 1st and 2nd floor supports 20,30. Details of the first and second floor supports 20, 30 will be described later. The first floor support 20 is a floor support having the same length as the conventional one, and the second floor support 30 corresponds to the short floor support of the present invention, and the length is the first floor support. Floor support shorter than 20.
The floor slab 11 is supported by a large beam 14 that supports the column 13.
The flooring 12 is formed by laminating a particle board 12a as a base plate, a plywood 12b as a reinforcing plate, and a flooring 12c as a finishing plate.
Further, a ceiling plate 15 and a partition wall 16 are provided in the residence 2.
The ceiling board 15 is supported on the lower surface side of the floor slab 11 on the upper floor via a ceiling support member 17 such as a field edge 17a, a field edge receiver 17b, and a field edge receiver mounting bracket 17c (see FIG. 2). The partition wall 16 partitions the house 2 into a plurality of rooms such as a living room 2a, a western room 2b, a washroom 2c, and a bathroom 2d (see FIG. 1A).

Next, the details of the double floor structure 10 and the first and second floor supports 20 and 30 in the present invention will be described.
As shown in FIG. 2, the girder 14 of this example is arranged such that the upper surface approaches the lower surface side of the flooring 12 by a preset length k. Further, the large beam 14 supports the floor slab 11 so that the upper surface of the floor slab 11 is positioned below the upper surface of the large beam 14 by the same length k.
Thus, the distance between the lower surface of the upper floor slab 11 and the upper surface of the lower floor ceiling plate 15 is such that the upper surface of the large beam 14 and the upper surface of the floor slab 11 are flush with the lower surface of the floor slab 11 and the ceiling. The distance k is shorter than the distance D _c from the upper surface of the plate 15.
In this example, k = 50 mm. Further, when the distance between the lower surface and the floor slab 11 of the floor material 12 and D _a, between the flooring 12 and the floor slab 11, the space is required to place the piping, such as drainage pipes, distance D _a As with the current spacing, D _a = 130 mm.

In the conventional double floor structure as shown in FIG. 5, since the upper surface of the large beam 14 and the upper surface of the floor slab 11 are in the same plane, the distance between the lower surface of the floor material 12 and the upper surface of the floor slab 11 is also different. distance between the upper surface of the lower surface and the girder 14 of 12 also, are both D _a. In contrast, in the present example, the interval between the upper surface of the lower surface and the floor slab 11 of flooring 12 is D _a, the distance between the upper surface of the lower surface and the girder 14 of the flooring 12 (D _a -k) And it becomes narrower than before. Therefore, the conventional floor support (first floor support 20) cannot support the end portion of the flooring 12 on the large beam 14 side.
Therefore, in this example, the portion of the flooring 12 that is directly above the floor slab 11 is supported by the first floor support 20 and the end on the large beam 14 side is the second floor that is a short floor support. The flooring 12 is supported by being supported by the support tool 30.

As shown in FIG. 3A, the first floor support 20 includes a vibration isolating rubber 21 installed on the floor slab 11, a support bolt 22 erected on the vibration isolating rubber 21, and an upper portion (chamber). And a pedestal 23 for attaching the flooring 12 to the inside. A male screw is formed on the outer peripheral surface of the support bolt 22, one end is embedded and fixed in the anti-vibration rubber 21, the other end is inserted into a through hole 23 h provided in the pedestal 23, and screwed into the support bolt 22. The height of the first floor support 20 is adjusted by the nut 24 to be joined. The height of the first floor support 20 is equal to the distance D _a between the lower surface and the floor slab 11 of the floor member 12.
The anti-vibration rubber 21 is fixed on the floor slab 11 with an adhesive or a double-sided tape, for example.

As shown in FIG. 3B, the second floor support 30 is also erected on the anti-vibration rubber 31 with an anti-vibration rubber 31 installed on the floor slab 11 and an external thread formed on the outer peripheral surface. A support bolt 32 and a pedestal 33 for attaching the flooring 12 to the top.
The pedestal 33 of the second floor support 30 is formed with a screw hole 33m into which the support bolt 32 is screwed on the inner peripheral surface. By screwing the support bolt 32 into the screw hole 33m, the second The height of the floor support 30 is adjusted.
The anti-vibration rubber 31 is also fixed on the floor slab 11 with an adhesive or a double-sided tape, for example.
Further, a recess 33n in which the anti-vibration rubber 31 can be accommodated is provided on the anti-vibration rubber 31 side of the base 33. Therefore, if enter the top of the rubber cushion 31 in the recess 33n, it can be the height of the second floor support 30, shorter than the distance D _a between the lower surface and the floor slab 11 of the flooring 12 . In this example, the height of the second floor support 30 is set to (D _a -k), which is the distance between the upper surface of the large beam 14 and the lower surface of the flooring 12. Even if k = 50 mm, since D _a −k = 80 mm, it is not necessary to store the entire anti-vibration rubber 31 in the recess 33n, and if the upper half of the anti-vibration rubber 31 is stored in the recess 33n, Two floor supports 30 can be placed between the floor beams 12 and the girder 14.
As a result, the end of the flooring 12 on the side of the large beam 14 is elastically supported by the second floor support 30 which is a short floor support, so that the vibration of the flooring 12 whose end is a free end can be reliably ensured. Can be reduced.
Also in this example, by providing an air communication path (gap) 12 s of about 2 mm between the flooring 12 and the wall 4, vibration (solid propagation sound) from the flooring 12 passes down the floor via the wall 4. I try to prevent it from being transmitted.

Here, when the thickness of the floor slab 11 is D _b , in the conventional double floor structure as shown in FIG. 5, the distance between the lower surface of the flooring 12 and the ceiling plate 15 is D ₀ = D _a + D _b + becomes a D _c, the double floor structure 10 of the present invention, the distance between the lower surface and the top plate 15 of the floor member 12 becomes _{D k = D a + D b} + (D c -k). That is, in the double floor structure 10 in the present invention, it can be seen that the height is lower by k in the height direction per layer than the conventional double floor structure.
Therefore, the height H _k of the building 1 having the double floor structure 10 according to the present invention is N · k higher than the height H of the apartment house having the conventional double floor structure, where N is the number of floors of the building. It can be seen that it can be lowered.
On the contrary, when N is large, as shown in FIG. 4, the height of the building 50 of the apartment house having the conventional double floor structure is the same as the height of the building 1 having the double floor structure 10 of the present invention. Even so, the number of floors of the building 1 can be increased.
For example, if the number of floors of the apartment building 50 is N and the height per floor is h, the height of the building 50 is H = N · h, but the height of the building 1 is H _k = (N + 1). (Hk) Here, if H = H _k , N = (h−k) / k. Therefore, when h = 2m50 cm and k = 50 mm, N = 50. In other words, it can be seen that a 50-story building can be made 51 floors at the same height by employing the double floor structure 10 of the present invention.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the embodiment. It is apparent from the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

For example, in the said embodiment, although the building 1 of the apartment house was set as the structure in which the some residence 2 encloses the circumference | surroundings of the ventilator 3, it is not restricted to this, The present invention has an apartment house which has a double floor structure. If so, it is applicable regardless of the form.
Moreover, in the said embodiment, although the floor slab 11 demonstrated the form supported by the large beam 14 in the peripheral part, even if it is a form by which a floor slab is arrange | positioned at the upper part of a large beam, If the portion on the beam is also regarded as a beam, the same form as in this example is obtained. In this case, it is clear that the upper surface of the large beam in claim 1 is the upper surface of the floor slab placed on the large beam, and the upper surface of the foundation floor is the upper surface of the portion between the large beams of the floor slab. is there.
In the above embodiment, the height of the first floor support 20 is adjusted by tightening the nut. However, like the second floor support 30, a screw hole is provided in the base 23, and this screw The support bolts 22 may be screwed into the holes.

1 apartment building, 2 residence, 3 atriums, 4 walls, 5 corridors, 6 veranda,
7 stairs, 8 elevator halls, 9a-9c elevators,
10 double floor structure, 11 floor slab, 12 flooring, 12s air communication passage (gap),
13 pillars, 14 girder, 15 ceiling plate, 16 partition wall, 17 ceiling support member,
20 first floor support, 21, 31 anti-vibration rubber, 22, 32 support bolt,
23, 33 pedestal, 23h through hole, 24 nut, 30 second floor support,
33m screw hole, 33n recess.

Claims (1)

A plurality of floor supports having vibration isolation members are arranged on the foundation floor supported by the girder, and a floor material composed of a plurality of floor boards is arranged on the floor support, and between the floor material and the wall surface. A building structure of an apartment house having a double floor structure provided with a predetermined gap,
The girder supports the foundation floor such that the upper surface of the foundation floor is positioned below the upper surface of the girder by a preset length, and the girder has an upper surface of the predetermined length. It is arranged to approach the lower surface side of the flooring,
Between the large beam and the floor material, a short floor support having a height lower than the height of the floor support by the preset length dimension is disposed ,
The short floor support is
An anti-vibration rubber installed on the foundation floor, a pedestal that contacts the lower surface of the floor material, and a screw member that is erected on the anti-vibration rubber with a male screw formed on the outer peripheral surface,
A screw hole into which the screw member is screwed is formed on the inner peripheral surface of the base,
On the vibration proof rubber side of the pedestal, there is provided a recess capable of storing the vibration proof rubber,
A building structure of an apartment house having a double floor structure, wherein a diameter dimension of the screw hole is smaller than a width dimension of the anti-vibration rubber .

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