JP2010065494A - Construction method of double floor and partition wall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate construction of a double floor and a partition wall by dispensing with arrangement of leg struts directly under the partition wall. <P>SOLUTION: A large number of height adjustable leg struts are arranged on a lower floor, and a reinforcing member of elongate plate shape is extended and fixed on the upper faces of two or more leg struts. An upper floor base board is stuck onto the reinforcing member, and the partition wall is erected in an optional position of the upper floor base board. A finishing material is stuck onto the upper floor base board. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a double floor in which a partition wall is erected from above an upper floor baseboard of a double floor and a method for constructing the partition wall.

For example, as shown in the following patent document, a double floor and a partition wall construction method (so-called floor advance construction method) in which an upper floor baseboard for a double floor is constructed and a partition wall is erected from above are known. Yes.
A conventional construction method will be described with reference to FIG. First, inking is performed on the lower floor 16 such as a concrete slab, and the arrangement of the bundle legs is determined so that the bundle legs 1 become the joints 9 of the upper floor base board 8. Further, the partition wall 11 is inked to determine the arrangement of the bundle legs directly below the partition wall.
A joist (not shown) is attached to the peripheral wall 17.
After placing the bundle legs on the lower floor according to the ink marking, lay the upper floor baseboard on the bundle legs and the joists and finely adjust the height of the bundle legs. This state is shown in FIG.
Next, the partition wall 11 is inked on the upper floor base board 8, and the partition wall is erected. Next, a finishing material such as flooring is affixed on the upper floor base board 8, and a baseboard is attached as necessary, thereby completing the construction of the double floor and the partition wall.
JP-A-2005-97901

  As described above, in the conventional method, it has been necessary to arrange the bundle legs directly below the position where the partition wall is provided. For this reason, it is necessary to inscribe the partition wall on the lower floor, and in order to adjust the height of the bundle leg, it is necessary to have a troublesome work of providing a through hole at the position of the base board. In addition, if the position of the partition wall changes due to a design change after installing the upper floor baseboard, it is necessary to remove the upper floor baseboard that has been constructed, print the ink again on the lower floor, and place the bundle legs. It was.

  An object of the present invention is to facilitate the construction of a double floor and a partition wall by eliminating the need to place a bundle leg directly under the partition wall.

[Claim 1]
The present invention includes a step of arranging a plurality of height-adjustable bundle legs on the lower floor;
Spanning and fixing an elongated plate-shaped reinforcing material on the upper surfaces of the two or more bundle legs;
Affixing an upper floor baseboard on the reinforcing material;
Erecting a partition wall at an arbitrary position of the upper floor baseboard;
A method for constructing a double floor and a partition wall, comprising a step of attaching a finishing material on the upper floor baseboard.

  By providing a reinforcing material, the central part of the upper baseboard that is most likely to bend due to the load is strengthened, making it difficult to bend, so the load can be applied regardless of the position of the partition wall on the upper floor baseboard. The amount of deformation of the upper floor relative to the surface is reduced, and sufficient rigidity can be obtained.

[Claim 2]
Further, the present invention includes a step of arranging a number of elongated plate-like reinforcing members on the upper surface of a bundle leg whose height can be adjusted two or more on the lower floor,
Affixing an upper floor baseboard on the reinforcing material;
Erecting a partition wall at an arbitrary position of the upper floor baseboard;
A method for constructing a double floor and a partition wall, comprising a step of attaching a finishing material on the upper floor baseboard.
In this way, it is possible to preliminarily integrate a strong material over the upper surfaces of two or more bundle legs.

[Claim 3]
According to the present invention, the bundle leg has a vibration-proof rubber at the lower end, a support bolt standing from the vibration-proof rubber, and a female screw hole, and the upper part of the support bolt is screwed into the female screw hole. 3. The construction method for a double floor and a partition wall according to claim 1 or 2, comprising a receiving plate supported at an upper portion so as to be adjustable in height.
By using such a bundle leg, sufficient sound insulation performance can be obtained.

[Claim 4]
Moreover, this invention is the construction method of the double floor and partition wall of Claim 3 in which the said reinforcing material has a through-hole for rotating the said support bolt.
By providing the through hole, the height of the bundle leg can be easily adjusted from above the upper floor base board.

[Claim 5]
Moreover, this invention is a construction method of the double floor and partition wall of Claim 3 or 4 which can arrange | position the said bundle leg in the joint part of the said baseboard, and can rotate the said support bolt from this joint.
In this way, the height of the bundle leg can be easily adjusted from above the upper floor base board.

In the present invention, it is not necessary to place a bundle leg directly under the partition wall, and since the partition wall can be constructed at an arbitrary position after the upper floor baseboard is pasted, it is not necessary to inking the partition wall on the lower floor, The complicated work of making a through hole in the upper floor base board is also unnecessary.
Therefore, the construction period is shortened and the economy is excellent.
Further, the upper floor has sufficient rigidity with respect to the loaded load and is less deformed. Furthermore, sufficient sound insulation performance can be obtained.
In addition, even if the position of the partition wall is changed due to a design change after installing the upper floor baseboard, it is not necessary to eliminate the upper floor baseboard, and the partition wall can be installed at the changed position as it is. Plans and renewals can be made freely.

  Hereinafter, the present invention will be described in detail with reference to the drawings relating to the embodiments. Fig. 1 is a plan view of a bundle foot placed on the lower floor, Fig. 2 is a plan view of a reinforcing material fixed on the upper surface of the bundle foot, and Figs. FIG. 5 is a sectional view of the partition wall in FIG. 3, FIG. 6 is a sectional view of the partition wall in FIG. 4, FIG. 7 is a sectional view of the bundle leg, and FIG. 8 is a perspective view of the reinforcing material. FIG. 9 shows the measurement result of the lightweight floor impact sound insulation performance of the double floor constructed according to the example, and FIG. 10 shows the measurement result of the heavy floor impact sound insulation performance of the double floor constructed according to the example.

1-4 has shown the construction order of the construction method of the double floor and partition wall of this invention. In the rooms in these drawings, the lower floor 16 is a concrete slab, the peripheral wall 17 is a concrete wall, and entrances and the like are omitted in the drawings.
The peripheral wall 17 is previously provided with a joist (not shown) for supporting the peripheral portion of the upper floor. What is necessary is just to provide the thing of arbitrary structures for the joist, for example, what is shown by Unexamined-Japanese-Patent No. 2007-177392 is suitable.

  As shown in FIG. 1, the bundle legs 1 are arranged on the lower floor 16 at predetermined intervals. It is desirable to arrange the bundle legs at the joints (long side direction) according to the allocation of the upper floor base board. The distance a in the short side direction of the upper floor base board of the bundle leg 1 is preferably 450 to 650 mm. However, when the upper floor base board having a width of 600 mm is used and the joint width is 10 mm, 610 mm is desirable. The distance b in the long side direction of the upper floor base board of the bundle leg 1 is preferably 300 to 600 mm.

FIG. 7 shows an example of the bundle leg 1. The bundle leg 1 includes a vibration-proof rubber 5 at the lower end, a support bolt 4 standing from the vibration-proof rubber, and a receiving plate 2 supported on the upper part. The receiving plate 2 has a female screw hole 3a, and the upper portion of the support bolt 4 is screwed into the female screw hole 3a. In this case, the female screw hole 3 a is formed by combining the receiving plate 2 with the nut 3. A groove 4a is formed at the top of the support bolt 4, and the height of the upper surface of the receiving plate can be adjusted by rotating the bolt from above with a tool such as a screwdriver.
The material of the receiving plate can be wood (for example, particle board or plywood having a thickness of 20 to 25 mm), plastic, metal, or the like. As for the female screw hole, in addition to combining the nut of this embodiment, the female screw hole may be directly formed in a plastic or metal receiving plate.

Next, as shown in FIG. 2, the elongated plate-shaped reinforcing material 6 is bridged on the upper surface of the receiving plate of the two bundle feet 1, and the reinforcing material and the bundle feet (with an appropriate fixing means such as an adhesive or a nail) Fix the support plate. Thereby, each two bundle legs are integrated via the reinforcing material. The reinforcing material 6 is preferably provided in the short side direction of the upper base board 8. In this case, since the reinforcing material is bridged and integrated with the two bundle legs as one set, the reinforcing material is not provided on a part of the bundle legs on the outer periphery. In this way, it is not always necessary that all the bundle legs are integrated with the reinforcing material, and there is no problem even if there are bundle legs that are not provided with the reinforcing material in a part of the outer peripheral portion.
In FIG. 2, the reinforcing material is bridged over two bundle legs, but may be bridged over three bundle legs and integrated.

  FIG. 8 shows an example of the reinforcing material 6. The reinforcing member 6 is preferably provided with a through hole 7 so that the support bolt of the bundle leg 1 can be rotated from above with a screwdriver or the like. Since the through-holes 7 need only be at the intervals a in FIG. 1, the positions to be opened can be easily determined. The material of the reinforcing material is a woody material such as plywood, wood, or particle board, and the thickness is preferably 15 to 40 mm and the width is about 45 to 90 mm.

Next, as shown in FIGS. 3 and 4, an upper floor base board 8 is pasted on the reinforcing material 6 (partly directly on the bundle foot 1) and the joist (not shown). Rotate the support bolt with a screwdriver to fine-tune the height of the upper floor. Further, the partition wall is marked on the upper floor base board 8, and the partition wall 11 is erected from above the upper floor base board 8.
The material of the upper floor base board 8 is most preferably a particle board having a thickness of 20 to 25 mm, but may be a veneer plywood or the like.

3 and 5 show a case where the partition wall 11 is provided in the short side direction of the upper floor baseboard 8 and is located at the center of the reinforcing member 6 and is the most disadvantageous in terms of strength.
In this case, the partition wall 11 is made of a light steel frame. A bowl-shaped runner 13 is fixed on the upper floor base board 8 with screws 15, and a light steel frame 12 (vertical material) is erected on the runner 13. Is affixed with screws.
Note that the structure of the partition wall is not limited to a lightweight steel frame as in the present embodiment, and may be a frame structure made of, for example, a wood material.

  4 and 6 show the case where the partition wall 11 is provided in the long side direction of the upper floor base board 8, and is located at the center of the bundle leg 1 and is the most disadvantageous in terms of strength. The structure of the partition wall is the same as in the case of FIGS.

  After the partition wall 11 is constructed, a finishing material is pasted on the upper floor base board 8. The finishing material is free, such as flooring, and the finishing material may be directly affixed on the upper floor base board, or may be affixed via a buffer sheet or plywood.

An upper floor deflection test was performed at the partition wall shown in FIGS. In either case, the following construction conditions were used.
Bundle leg spacing: 610 mm (a) x 460 mm (b)
Reinforcement material: Plywood 30mm thick x 60mm wide Upper floor base board: Particle board 600mm x 1800mm x 25mm Finishing material: 12mm thick flooring is directly attached to the upper floor baseboard Partition wall: Light steel frame (Figs. 5 and 6)

FIG. 3 shows the case where the partition wall 11 is provided in the short side direction of the upper floor base board 8 and is located at the center of the reinforcing member 6 and is the most disadvantageous in terms of strength. A weight was placed on a load range 18 (300 mm × 1100 mm) shown in the figure and a load was applied, and the amount of deflection of the upper floor at three measurement points A, B, and C was measured. The results are shown in Table 1.

FIG. 4 shows a case where the partition wall 11 is provided in the long side direction of the upper floor baseboard 8 and is located at the center of the bundle leg 1 and is the most disadvantageous in terms of strength. A weight was placed on a load range 18 (300 mm × 1100 mm) shown in the figure and a load was applied, and the amount of deflection of the upper floor at three measurement points A, B, and C was measured. The results are shown in Table 2.

The maximum deflection amount in Table 1 is 1.64 cm at measurement point C at a load of 260 kg, and the maximum deflection amount in Table 2 is 1.43 cm at measurement point B at a load of 260 kg. A load of 260 kg in a load range of 300 mm × 1100 mm corresponds to 788 kg in terms of 1 m ² . For example, according to the public corporation test criteria, since the displacement is 7.5 mm or less with respect to the loaded load of 400 kg / m ² , the present embodiment satisfactorily satisfies this standard.
Since the partition wall is provided at the most disadvantageous position in this example, it was proved that sufficient strength and rigidity of the upper floor can be obtained according to the present invention.

  FIG. 9 shows the results of a lightweight floor impact sound blocking performance test (JIS A 1418-1) for the double floor of FIG. The floor impact sound insulation performance grade is Lr-45, indicating excellent sound insulation performance.

FIG. 10 shows the result of a heavy floor impact sound insulation performance test (JIS A 1418-2) for the double floor of FIG. The floor impact sound insulation performance grade is Lr-50, indicating excellent sound insulation performance.
Thus, according to the present invention, it was proved that sufficient sound insulation performance can be obtained.

It is a top view of the state which has arranged the bundle leg on the lower floor. It is a top view of the state which fixed the reinforcing material to the upper surface of a bundle leg. It is a top view of the state which stuck the upper floor base board and established the partition wall. It is a top view of the state which stuck the upper floor base board and established the partition wall. It is a cross-sectional explanatory drawing of the partition wall of FIG. It is a cross-sectional explanatory drawing of the partition wall of FIG. It is sectional drawing of a bundle leg. It is a perspective view of a reinforcing material. It is a measurement result of the lightweight floor impact sound interruption | blocking performance of the double floor constructed by the Example. It is a measurement result of the heavy floor impact sound insulation performance of the double floor constructed according to the example. It is explanatory drawing of the construction method of the conventional double floor and a partition wall.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bundle leg 2 Receiving plate 3 Nut 4 Support bolt 5 Anti-vibration rubber 6 Reinforcement material 7 Through hole 8 Upper floor base board 9 Joint 10 Finishing material 11 Partition wall 12 Light steel frame 13 Runner 14 Plaster board 15 Screw 16 Lower floor 17 Circumferential wall 18 Load range

Claims (5)

Placing a number of height-adjustable bundle feet on the lower floor;
Spanning and fixing an elongated plate-like reinforcing material on the upper surfaces of the two or more bundle legs;
Affixing an upper floor baseboard on the reinforcing material;
Erecting a partition wall at an arbitrary position of the upper floor baseboard;
A method for constructing a double floor and a partition wall, comprising a step of affixing a finishing material on the upper floor baseboard. Arranging a plurality of long and thin plate-like reinforcement members on the upper surface of a bundle leg whose height can be adjusted at least two on the lower floor;
Affixing an upper floor baseboard on the reinforcing material;
Erecting a partition wall at an arbitrary position of the upper floor baseboard;
A method for constructing a double floor and a partition wall, comprising a step of affixing a finishing material on the upper floor baseboard.   The bundle leg has an anti-vibration rubber at the lower end, a support bolt standing from the anti-vibration rubber, and a female screw hole. The upper part of the support bolt is screwed into the female screw hole, and the height is adjusted to the upper part of the support bolt. 3. The method for constructing a double floor and a partition wall according to claim 1 or 2, wherein the support plate is supported in a possible manner.   The construction method of a double floor and a partition wall according to claim 3, wherein the reinforcing material has a through hole for rotating the support bolt.   The method for constructing a double floor and a partition wall according to claim 3 or 4, wherein the bundle leg is arranged at a joint portion of the base board, and the support bolt can be rotated from the joint.

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