JP2006265947A - Floor structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor structure with a good lightweight floor impact sound cut-off efficiency. <P>SOLUTION: The floor structure 1 is so constituted that floor substrate materials 5 consisting of a thermoplastic foaming resin are closely spread all over the upper surface of a concrete slab 3 through a large number of unevenness adjusting materials 4, a finishing material 7 is installed on the floor substrate materials 5 through a damping face plate 6 and that the lower part side of each floor substrate material 5 is formed of the elastic closed cell thermoplastic foaming resin. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a floor structure.

As a floor structure 23 in each dwelling unit of a conventional apartment house, as shown in FIG. 6, a floor base material 26 made of foamed plastic is spread on a concrete slab 24 through a non-uniform adjustment material 25 such as mortar, A finishing material 27 is installed on the floor base material 26. As another floor structure, for example, the invention of Japanese Patent Laid-Open No. 10-331401 is known.
Japanese Patent Laid-Open No. 10-331401

  However, the floor structure as described above is excellent in heat insulation, walking comfort, safety, warmth and the like, but there is a problem that the sound insulation performance of lightweight floor impact sound is insufficient.

  The present invention has been made in view of the above problems, and an object thereof is to provide a floor structure having a light weight floor impact sound blocking performance.

In the floor structure of the present invention, a floor base material made of a thermoplastic foam resin is closely laid on the upper surface of a concrete slab via a number of uneven surface adjusters, and a damping surface material is interposed on the floor base material. The finishing material is installed, and the lower side of the floor base material is made of an elastic closed-cell thermoplastic foamed resin. The vibration damping surface material includes that the surface density is 9 kg / m ² or more.
Moreover, it includes that the space | gap part or the hollow part is formed in the lower part of a floor base material. In addition, it includes that the unevenness adjusting material is installed on the upper surface of the concrete slab via a striking layer. Moreover, the unevenness adjusting material includes that the lower part is buried in the striking layer. Further, the unevenness adjusting material includes a dumpling shape or a long shape. In addition, the vibration damping surface material includes being installed on the floor base material via a scraping material. In addition, the floor base material at the end portion comes into contact with the joist when it is separated from the wall surface, and includes a fin installed on the lower surface of the base plate.

  Since the vibration energy of the lightweight floor impact sound is absorbed by the damping surface material and not transmitted to the concrete slab, the sound insulation performance can be improved. In addition, by installing the floor base material that is closely packed through a number of unevenness adjusting materials, it is possible to effectively absorb the vibration energy of heavy floor impact sound. Further, since the hollow portion is formed in the lower part of the base material, the vibration energy of the lightweight floor impact sound can be absorbed by the hollow portion. In addition, since the lower part of the floor base material is made solid by the non-land surface adjusting material deformed flat, it is possible to completely block the noises of the adjacent rooms separated by the partition wall in the post-construction. In addition, because the slab thickness is increased by the additional striking layer provided under the non-land surface adjusting material, the vibration energy of the heavy floor impact sound and the light floor impact sound can be absorbed effectively, and the so-called drum phenomenon is called resonance. The phenomenon can also be prevented. Further, since the lower part of the unevenness adjusting material is buried in the striking layer, the integration with the concrete slab is facilitated and the unevenness adjustment can be easily performed. Moreover, the level adjustment can be easily and accurately performed by installing the floor base material via the additional striking layer having fluidity and the unevenness adjusting material.

  Hereinafter, embodiments of the floor structure of the present invention will be described with reference to the drawings. In each embodiment, the same components are described with the same reference numerals, and only different components are described with different reference numerals.

FIG. 1 shows a floor structure 1 according to a first embodiment. This floor structure 1 is in each dwelling unit (one dwelling unit) 2 of an apartment house, and a floor base material 5 is closely laid on an uneven surface adjusting material 4 installed on the upper surface of a concrete slab 3, A flooring material 5 and a finishing material 7 are installed on the upper surface of the floor base material 5 via a damping surface material 6. Further, the end portion of the finishing material 7 is covered with a fin base plate 9 installed on the wall surface 8, and the end portion of the floor base material 5 is in contact with the joist 10 at the wall surface 8.

The floor base material 5 is a thermoplastic foamed resin composite, and includes an upper member 11 made of a foamed resin such as a polystyrene resin, a polyolefin resin, or a urethane resin, and a lower member made of an elastic closed-cell thermoplastic foamed resin. 12. As this thermoplastic foamed resin, a foamed molded product having a density of 8 to 40 g / l made of high density polyethylene, linear low density polyethylene, polypropylene, propylene / ethylene copolymer, styrene / polyethylene copolymer, etc. is used. The Further, a pier 13 made of hard thermoplastic foam resin is embedded in the upper surface of the upper member 11, and the finishing material 7 is nailed therein.

Further, the unevenness adjusting material 4 is a mortar, and a large number of dumplings installed at appropriate intervals are flattened by the floor base material 5 to make the space between the concrete slabs 3 dense.

In addition, as the damping surface material 6, an absorbing material that absorbs vibration is used in addition to an asphalt sheet or a rubber sheet having a surface density of 9 kg / m ² or more.

  FIG. 2 shows the floor structure 14 of the second embodiment, in which a gap portion 15 and a hollow portion 16 are provided below the floor base material 5 in the floor structure 1 of the first embodiment. . Further, the hollow portion 16 in (2) of the figure is formed by closing the gap portion 15 with the bottom plate 17, and (3) in the same figure is closed by closing the lattice-like gap portion 15 with the bottom plate 17. The hollow portion 16 is formed, and (4) in the figure is the one in contact with the joist 10 when the floor base material 5 is separated from the wall surface. Otherwise, the first embodiment described above. This is the same configuration as the floor base material 5 in the floor structure 1 of FIG.

  The bottom plate 17 is made of an elastic closed-cell thermoplastic foam resin. Examples of the thermoplastic foam resin include high-density polyethylene, linear low-density polyethylene, polypropylene, propylene / ethylene copolymer, and styrene / polyethylene copolymer. A foamed product having a density of 8 to 20 g / l is used.

  Such a gap portion 15 or hollow portion 16 absorbs the vibration energy of the lightweight floor impact sound together with the vibration damping surface member 6, so that the sound insulation of the floor is enhanced.

  FIG. 3 shows a floor structure 18 according to the third embodiment. This floor structure 18 is provided with a scraping material 19 such as a particle board between the floor base material 5 and the vibration damping surface material 6 in the floor structure 18 of the first embodiment. It is the same structure as the floor structure 1 of 1st Embodiment. When the disposing material 19 is provided under the finishing material 7 as described above, the base material that supports the partition wall can be strengthened, and the floor base material 5 can be used as a scaffold for interior work before the finishing material 7 is applied. Therefore, work efficiency can be improved.

FIG. 4 shows a floor structure 20 according to the fourth embodiment. The floor structure 20 is obtained by forming a striking layer 21 having an appropriate thickness on the upper surface of the concrete slab 3 with mortar or the like, and installing the unevenness adjusting material 4 thereon. It is the same structure as the floor structure 1 of 1 embodiment.

  Moreover, as shown in (2) of the same figure, the lower layer of the flat unevenness adjusting material 4 is buried and integrated with the striking layer 21, and level adjustment and unevenness adjustment are performed by this embedding. In this way, by adding the striking layer 21 and the unevenness adjusting material 4 to form a slab thickness, the influence of the heavy floor impact sound and the lightweight floor impact sound can be reduced.

The configuration in which the striking layer 21 having an appropriate thickness is formed on the upper surface of the concrete slab 3 can also be applied to the floor structures 14 and 18 of the second and third embodiments.

  Since the damping surface material 6 is provided on the upper surface of the floor base material 5 as described above, as shown in Table 1 below, the level at 125 Hz to 2 kHz of the lightweight floor impact sound based on the evaluation method of JIS 1440 is reduced. It was confirmed that the sound insulation was improved.

  The test body (A) in Table 1 below is that of FIG. 6, and the test body (B) is obtained by removing the elastic thermoplastic foam resin material from the floor structure of FIG. 1, and the test body (C). 2 is the floor structure of FIG. 2 (3) excluding the scraping material and the damping surface material, and test bodies (D) to (F) are the floor structure of FIG. ) Is the floor structure (independent joist method) of (4) in FIG.

  Next, the construction method of the floor structure will be described based on the floor structure 20 of the fourth embodiment. First, an adhesive such as a primer is applied to the upper surface of the concrete slab 3, and then a mortar with an appropriate thickness is applied thereon to form the additional striking layer 21. For example, the additional striking layer 21 is formed only at a place where the first-layer floor base material 5 is installed.

  Next, as shown in FIG. 5, before the additional striking layer 21 is dried, a large number of dumpling-like conditioners 4 in mortar are installed thereon, and the floor base material 5 is installed thereon. By making at least one row (two or three rows) of the unevenness adjusting material into a continuous long shape, the space where the unevenness adjusting material is installed is divided finely so that air vibrations interfere with each other and cancel each other. To. Two or three rows of long ones are connected to each other. Next, when the floor base material 5 is pushed downward with the upper surface of the joist 9 as a reference line when installed on the inner periphery of the room, the unevenness adjusting material 4 is flattened and is crushed between the concrete slab 3. In addition to being almost solid, the lower portion of the unevenness adjusting material 4 is buried in the additional striking layer 21 and integrated. In addition, the elongate unevenness adjusting material 4 as described above can be applied even when the striking layer 21 is not formed.

Next, after the first row of the floor base material 5 is installed, mortar is applied to the place where the second row of the floor base material is installed, thereby forming the second row of striking layers 21. Next, the floor base material 5 is installed by the same method as described above, and the floor base material 5 is closely spread over the entire surface of the concrete slab 3 by sequentially repeating this process. Next, the damping surface material 6 is stuck on the floor base material 5, and the finishing material 7 is spread thereon to construct the floor structure 20.

In addition, although the floor base material 5 was installed 1 row at a time, it is not restricted to this, It can install in multiple rows, such as 2 rows or 3 rows, and the striking layer 21 can also be formed in the range of multiple rows. . Further, the floor base material 5 can be installed one by one instead of in units of rows, and the additional striking layer 21 can be formed at a place where the floor base material 5 is installed one by one.

It is a floor structure of a 1st embodiment, (1) is a sectional view and (2) is the same section abbreviation top view. It is the floor structure of 2nd Embodiment, (1)-(4) is sectional drawing. It is the floor structure of 3rd Embodiment, (1) is sectional drawing, (2) is the same part abbreviation top view. It is the floor structure of 4th Embodiment, (1) is sectional drawing, (2) is an expanded sectional view of the principal part. It is a top view which shows the construction method of a floor structure. It is sectional drawing of the conventional floor structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 14, 18, 20, 23 Floor structure 2 Dwelling unit 3, 24 Concrete slab 4, 25 Unevenness adjustment material 5, 26 Floor base material 6 Damping surface material 7, 27 Finishing material 8 Wall surface 9 Skirting board 10 Tokonoki 11 Upper member 12 Lower member 13 Crosspiece 15 Cavity 17 Bottom plate 19 Scattering material 21 Additional striking layer

Claims (8)

  A floor base material made of a thermoplastic foam resin is closely laid on the upper surface of the concrete slab through a number of uneven surface adjusters, and a finishing material is installed on the floor base material via a damping surface material, A floor structure characterized in that the lower side of the floor base material is made of an elastic closed-cell thermoplastic foamed resin. The floor structure according to claim 1, wherein the vibration damping surface material has a surface density of 9 kg / m ² or more.   The floor structure according to claim 1 or 2, wherein a gap or a hollow is provided in a lower part of the floor base material.   The floor structure according to any one of claims 1 to 3, wherein the unevenness adjusting material is installed on the upper surface of the concrete slab via a striking layer.   The floor structure according to claim 4, wherein the unevenness adjusting material has a lower portion buried in a striking layer.   The floor structure according to claim 4 or 5, wherein the unevenness adjusting material has a dumpling shape or a long shape.   The floor structure according to any one of claims 1 to 6, wherein the vibration-damping surface material is installed on the floor base material via a scraping material.   The floor structure according to any one of claims 1 to 7, wherein the floor base material at the end is brought into contact with the joist when separated from the wall surface, and a fin is provided on the lower surface of the base plate.

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