Bed structure

Abstract

To suppress sound generated from a floor when walking.SOLUTION: In a floor structure 1, a plurality of floor materials 4 are stacked and laid on a top of floor support legs erected on a floor slab. The plurality of floor materials 4 include: a first floor substrate board 8 supported from below by the floor support legs; a second floor substrate board 9 arranged above the first floor substrate board 8; and a floor finishing material 10 arranged above the second floor substrate board 9 to constitute a floor surface. The second floor substrate board 9 is a layered gypsum board having a glass fiber layer 9b containing glass fiber.SELECTED DRAWING: Figure 3

Description

[Technical Field] 【0001】 This disclosure relates to a double-floor structure in buildings such as apartment complexes. [Background technology] 【0002】 Traditionally, in apartment buildings and similar structures, floor slabs are formed on each floor within a concrete or similar structural frame. Support legs are erected on these floor slabs via bases such as cushioning rubber, and particleboard and plywood are placed on top of these to form the subfloor. Flooring is then laid as the finishing material. 【0003】 For example, Patent Document 1 discloses a double-floor structure using gypsum board with excellent fire resistance. In this double-floor structure, a double floor is formed by supporting multiple floor panels at a predetermined height level using support bases erected on the foundation floor, and a floor finishing material is laid on these floor panels via gypsum board. [Prior art documents] [Patent Documents] 【0004】 [Patent Document 1] Registered Utility Model No. 3061404 Publication [Overview of the Initiative] [Problems that the invention aims to solve] 【0005】 However, as described in Patent Document 1, in a double-floor structure composed of multiple flooring materials (floor panels, gypsum boards, and floor finishing materials) stacked on top of each other, when a load from the feet is applied to the lower floor when walking on the floor, there is a possibility that noise may be generated from the floor due to the downward deflection of the flooring material. For example, when a load from the feet is applied to the lower floor when walking, if the flooring material deflects downward, this deflection of the flooring material may cause friction between the flooring materials themselves, or between the flooring material and fixing nails, etc., which may generate noise from the floor. 【0006】 Therefore, this disclosure aims to provide a floor structure that can suppress the generation of noise from the floor when walking. [Means for solving the problem] 【0007】 To solve the above problems, a first aspect of the present invention is a floor structure in which a plurality of flooring materials are laid in layers on top of floor support legs erected on a floor slab, wherein the plurality of flooring materials include a first floor baseboard supported from below by the floor support legs, a second floor baseboard positioned above the first floor baseboard, and a floor finishing material positioned above the second floor baseboard to form the floor surface, wherein the second floor baseboard is a gypsum board formed in layers having a glass fiber layer containing glass fibers. 【0008】 A second aspect of the present invention is the floor structure according to the first aspect, wherein the glass fiber layer of the second floor baseboard is provided below the center in the thickness direction of the second floor baseboard. 【0009】 A third aspect of the present invention is the floor structure according to the second aspect, wherein the glass fiber layer of the second floor baseboard is provided as the bottom layer of the second floor baseboard. 【0010】 A fourth aspect of the present invention is a floor structure according to any of the first to third aspects, wherein the second floor baseboard has a paper layer provided as the uppermost layer and made of paper. 【0011】 A fifth aspect of the present invention is the floor structure according to the fourth aspect, wherein a plurality of the second floor baseboards are provided adjacent to each other, and sealing members are provided on the upper surfaces of the adjacent portions of the plurality of second floor baseboards. 【0012】 A sixth aspect of the present invention is a floor structure according to any of the first to fifth aspects, wherein the glass fibers in the glass fiber layer of the second floor baseboard are a glass fiber net arranged in a grid pattern. 【0013】 The seventh aspect of the present invention is the floor structure according to any one of the first aspect to the sixth aspect, wherein the thickness of the second floor base board is set to 9.5 mm or more. 【0014】 The eighth aspect of the present invention is the floor structure according to any one of the first aspect to the seventh aspect, wherein the specific gravity of the second floor base board is 1.25 g / cm 【0020】 , 【0019】 , , , , , is set to. 【Advantages of the Invention】 【0015】 According to the present disclosure, the generation of sound from the floor during walking can be suppressed. 【Brief Description of the Drawings】 【0016】 [Figure 1] It is a perspective view from above for explaining the floor structure according to an embodiment of the present invention. [Figure 2] It is a cross-sectional view of the floor structure. [Figure 3] It is an enlarged view of part III in FIG. 2. [Figure 4] It is a perspective view from the lower surface side of the second floor base board. [Figure 5] It is an enlarged view of part V in FIG. 1. 【Modes for Carrying Out the Invention】 【0017】 Hereinafter, an embodiment of the present invention will be described based on the drawings. 【0018】 FIG. 1 is a perspective view from above of a floor structure 1 according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the floor structure 1. 【0019】 The floor structure 1 according to an embodiment of the present invention is applied to, for example, a double-floor structure in a building such as an apartment house with a concrete structure. 【0020】 As shown in Figures 1 and 2, the floor structure 1 according to this embodiment is a floor structure in which multiple floor materials 4 are laid on top of floor support legs 3 erected on a floor slab 2. The multiple floor materials 4 are positioned at an upper distance from the floor slab 2 and are supported from below by the floor support legs 3. 【0021】 The floor support leg 3 is a member positioned between the floor slab 2 and the flooring material 4, supporting the flooring material 4 from below, and comprises a base 5, a support column 6, and a board support 7. In this embodiment, multiple floor support legs 3 are provided between the floor slab 2 and the flooring material 4. The base 5 is formed of an elastic material such as cushioning rubber and functions as a cushioning material. The support column 6 is a columnar member extending in the vertical direction, with its lower end rotatably elastically supported by the base 5. A board support 7 is attached to the upper end of the support column 6. The support column 6 has a mechanism that allows adjustment of the height position of the board support 7. For example, the support column 6 is a bolt and is screwed into a female threaded portion (not shown) provided on the board support 7. By rotating the support column 6 relative to the board support 7, the height position of the board support 7 can be adjusted. Note that the configuration of the floor support leg 3 is not limited to the above, and any configuration that is positioned between the floor slab 2 and the flooring material 4 and can support the flooring material 4 from below is acceptable. 【0022】 The multiple floor materials 4 include a first floor baseboard 8 supported from below by floor support legs 3, a second floor baseboard 9 positioned above the first floor baseboard 8, and a floor finishing material 10 positioned above the second floor baseboard 9 to form the floor surface. In this embodiment, the multiple floor materials 4 are composed of the three components described above (the first floor baseboard 8, the second floor baseboard 9, and the floor finishing material 10). 【0023】 The first subfloor board 8 is the lowest subfloor among the multiple floor materials 4, and is supported from below either directly by the floor support legs 3 or indirectly by the floor support legs 3 via the joist members 11. In this embodiment, particleboard (wooden board) made by heating and compressing wood chips is used as the first subfloor board 8. In this embodiment, multiple first subfloor boards 8 are laid adjacent to each other above the floor support legs 3. The first subfloor boards 8 are fixed to the floor support legs 3. Note that the first subfloor board 8 is not limited to particleboard, but may also be plywood. Furthermore, in this disclosure, "adjacent" is not limited to being adjacent and touching, but also includes being adjacent and close to each other. 【0024】 The second subfloor board 9 is a subfloor laid on the upper surface of the first subfloor board 8 and is fixed to the first subfloor board 8, for example, by screws. In this embodiment, a plurality of second subfloor boards 9 are laid adjacent to each other above the first subfloor board 8. The second subfloor boards 9 are formed in a rectangular shape. The detailed configuration of the second subfloor boards 9 will be described later. 【0025】 The floor finishing material 10 is positioned on the uppermost side of the multiple floor materials 4 and is exposed to the interior side. It is a flooring material that constitutes the floor surface and is laid without gaps on the upper surface of the second floor subfloor board 9 and fixed to the second floor subfloor board 9. The floor finishing material 10 is, for example, a veneer-laminated plywood with a surface finish. 【0026】 Next, we will explain the composition of the second floor underlayment board 9. 【0027】 Figure 3 is an enlarged view of section III in Figure 2. Figure 4 is a perspective view from the underside of the second floor subfloor board 9. 【0028】 As shown in Figures 3 and 4, the second floor subfloor board 9 is a gypsum board placed between the first floor subfloor board 8 and the floor finishing material 10, and in this embodiment, it is formed in a four-layer rectangular shape. The second floor subfloor board 9 has upper and lower paper layers 9a made of base paper (paper) 12 for boards, which are provided in the uppermost and second-to-last layers, a glass fiber layer 9b provided in the bottommost layer and containing a glass fiber net (glass fiber) 13, and a gypsum layer 9c provided between the upper and lower paper layers 9a. The glass fiber layer 9b in this embodiment is a layer formed by attaching a glass fiber net 13, which is formed by weaving glass fibers in a grid (mesh) pattern, to the lower surface of the second floor subfloor board 9 (in this embodiment, the lower surface of the lower paper layer 9a). That is, the glass fiber in this embodiment is a glass fiber net 13 provided in a grid pattern, and the glass fiber layer 9b in this embodiment is provided below the center in the thickness direction of the second floor subfloor board 9. The gypsum layer 9c is a layer made of gypsum and does not include the glass fiber net 13. The glass fiber layer 9b may be made by attaching one glass fiber net 13, or by attaching multiple glass fiber nets 13. In this embodiment, upper and lower paper layers 9a are provided, but the lower paper layer 9a may be omitted. 【0029】 The thickness of the second floor underlayment board 9 is preferably 9.5 mm or more. In this embodiment, the thickness of the second floor underlayment board 9 is set to 12.5 mm. The specific weight (weight per unit volume) of the second floor underlayment board 9 is 1.18 g / cm³. 3 More than 1.30g / cm 3 The following is preferable. In this embodiment, the specific weight of the second floor baseboard 9 is 1.25 g / cm³. 3 It is set to this. The specific weight of this second floor subfloor board 9 is (1.25 g / cm²). 3 The specific weight of the glass fiber layer 9b is greater than that of a normal gypsum board that has paper layers of base paper for boards on both the top and bottom of the gypsum layer without having a glass fiber layer 9b. In other words, the specific weight of the glass fiber layer 9b is greater than the specific weight of the gypsum layer 9c. Note that the thickness of the second floor base board 9 is not limited to 12.5 mm. Also, the specific weight of the second floor base board 9 is 1.25 g / cm³.3 It is not limited to that. 【0030】 Next, we will explain the construction of floor structure 1. Figure 5 is an enlarged view of section V in Figure 1. 【0031】 When constructing the floor structure 1, first, the joists 11 are installed along the walls of the room at a predetermined height. The joists 11 are supported from below by floor support legs 3 (e.g., support bolts) for the joists 11, with their height adjusted. Next, multiple floor support legs 3 are erected on the floor slab 2 at predetermined intervals. 【0032】 Next, multiple first floor baseboards 8 are laid above the floor support legs 3. At this time, the first floor baseboards 8 are laid above the floor support legs 3 with a gap 14 between them and other adjacent first floor baseboards 8. Multiple floor support legs 3 are arranged along the long side of the first floor baseboards 8. In this state, the first floor baseboards 8 are fixed to the board receivers 7 of the floor support legs 3 with adhesive sheets and screws. Next, the height position of the first floor baseboards 8 is adjusted by operating the height adjustment mechanism of the floor support legs 3. 【0033】 Next, multiple second floor subfloor boards 9 are laid on top of the first floor subfloor board 8 with the glass fiber layer 9b facing downwards (paper layer 9a facing upwards). At this time, the second floor subfloor boards 9 are laid on top of the first floor subfloor board 8 with a gap 15 (for example, a gap of about 3 mm 15) between them and other adjacent second floor subfloor boards 9. As shown in Figure 5, after laying multiple second floor subfloor boards 9 on top of the first floor subfloor board 8, masking tape (sealing material) 16 is applied to the upper surface of the adjacent portions of the short sides of adjacent second floor subfloor boards 9 (the portions where the gap 15 is provided in this embodiment) to seal the adjacent portions of the short sides of adjacent second floor subfloor boards 9. Next, the multiple second floor subfloor boards 9 are fixed to the first floor subfloor board 8 from above with connecting nails or the like. 【0034】 Finally, the floor finishing material 10 is laid on top of the second floor subfloor board 9 and fixed to the second floor subfloor board 9 and the first floor subfloor board 8 with floor nails. 【0035】 In the floor structure 1 configured as described above, the second floor baseboard 9 is a gypsum board formed in layers having a glass fiber layer 9b containing glass fibers (glass fiber net 13). Thus, because the second floor baseboard 9 has a glass fiber layer 9b containing glass fibers (glass fiber net 13), its rigidity can be ensured even if it is a gypsum board with relatively low rigidity. Therefore, when a load from the feet is applied to the floor material 4 below during walking, the downward deflection of the floor material 4 can be suppressed, and the generation of noise caused by the deflection of the floor material 4 can be suppressed. 【0036】 Furthermore, the glass fiber layer 9b of the second floor subfloor board 9 is located below the center in the thickness direction of the second floor subfloor board 9 (the lowest layer in this embodiment). Therefore, when a load from the feet is applied to the flooring material 4 below during walking, the elongation of the lower surface of the second floor subfloor board 9 can be suppressed. As a result, when a load from the feet is applied to the flooring material 4 below during walking, the downward deflection of the flooring material 4 can be suppressed, and the generation of noise caused by the deflection of the flooring material 4 can be suppressed. 【0037】 Furthermore, since the glass fibers provided in the glass fiber layer 9b of the second floor subfloor board 9 are arranged in a grid pattern, the rigidity of the second floor subfloor board 9 can be ensured. As a result, when a load from the feet is applied to the flooring material 4 below during walking, the downward deflection of the flooring material 4 can be suppressed, and the generation of noise caused by the deflection of the flooring material 4 can be suppressed. 【0038】 Furthermore, by setting the thickness of the second subfloor board 9 to 9.5 mm or more, the rigidity of the second subfloor board 9 can be ensured. As a result, when a load from the feet is applied to the flooring material 4 below during walking, the downward deflection of the flooring material 4 can be suppressed, and the generation of noise caused by the deflection of the flooring material 4 can be suppressed. 【0039】 Furthermore, the specific weight of the second floor subfloor board 9 is 1.25 g / cm³. 3 By setting it in this way, it is possible to ensure higher rigidity than ordinary gypsum boards that have paper layers of base paper for boards on both the top and bottom of the gypsum layer. As a result, when a load from the feet is applied to the flooring material 4 below during walking, the downward deflection of the flooring material 4 can be suppressed, and the generation of sound caused by the deflection of the flooring material 4 can be suppressed. In addition, since the specific weight of the second floor baseboard 9 is higher than that of ordinary gypsum boards, sound transmission can be suppressed. 【0040】 Thus, according to this embodiment, it is possible to suppress the generation of noise from the floor when walking. 【0041】 Furthermore, since the second floor baseboard 9 has a paper layer 9a on its uppermost layer, unlike the case where a glass fiber layer 9b or a gypsum layer 9c is provided on the uppermost layer, it is possible to suppress unevenness on the upper surface of the second floor baseboard 9. Therefore, it is possible to prevent the floor finishing material 10 from lifting when it is laid on the upper surface of the second floor baseboard 9. 【0042】 Furthermore, masking tape (sealing material) 16 is applied to the upper surface of the adjacent short sides of the second floor subfloor boards 9 to seal the adjacent short sides of the second floor subfloor boards 9. In this way, the short sides of the second floor subfloor boards 9, where the base paper 12 for the boards of the second floor subfloor boards 9 is relatively prone to peeling, are sealed, thus preventing the base paper 12 from peeling off. As a result, the edges of the short sides of the base paper 12 for the boards are prevented from peeling and curling up, and the curled parts from protruding upward, thus preventing the floor finishing material 10 from lifting when it is laid on the upper surface of the second floor subfloor boards 9. 【0043】 In this embodiment, the glass fibers provided in the glass fiber layer 9b of the second floor baseboard 9 are arranged in a grid pattern as a glass fiber net 13, but the invention is not limited to this, and for example, sheet-like glass fibers that are irregularly intertwined without weaving may also be used. 【0044】 Furthermore, in this embodiment, the second floor subfloor board 9 was laid with a gap 15 between it and other adjacent second floor subfloor boards 9, but the invention is not limited to this, and it may also be laid in contact with other adjacent second floor subfloor boards 9. 【0045】 Furthermore, in this embodiment, the adhesive tape (sealing member) 16 is provided on the upper surface of the adjacent portion between the short sides of adjacent second floor subfloor boards 9, but this is not the only option. For example, in addition to the adjacent portion between the short sides of adjacent second floor subfloor boards 9, or instead of the adjacent portion between the short sides of adjacent second floor subfloor boards 9, the sealing member may be provided on the upper surface of the adjacent portion between the long sides of adjacent second floor subfloor boards 9. 【0046】 Furthermore, in this embodiment, gum tape 16 is provided as a sealing member to seal the upper surface of the adjacent portion of the second floor baseboard 9. However, the sealing member is not limited to gum tape 16, and other sealing members (for example, caulking material) may be used as long as they can prevent the base paper 12 for the board from peeling off. 【0047】 Furthermore, in this embodiment, a paper layer 9a is provided on the uppermost layer of the second floor underlayment board 9, but the embodiment is not limited to this, and for example, a glass fiber layer 9b may be provided on both the lowermost and uppermost layers of the second floor underlayment board 9. 【0048】 Furthermore, in this embodiment, a glass fiber layer 9b is provided at the bottom layer of the second floor baseboard 9, but the embodiment is not limited to this, and the second floor baseboard 9 only needs to have at least a glass fiber layer 9b. For example, a glass fiber layer 9b may be provided in an intermediate layer in the thickness direction of the second floor baseboard 9. 【0049】 Furthermore, in this embodiment, multiple floor materials 4 are composed of a first floor subfloor board 8, a second floor subfloor board 9, and a floor finishing material 10, but the embodiment is not limited to this, and may include the first floor subfloor board 8, the second floor subfloor board 9, and the floor finishing material 10. 【0050】 As described above, the present invention has been explained based on the above embodiments. However, the present invention is not limited to the contents of the above embodiments, and can be appropriately modified without departing from the scope of the present invention. That is, other embodiments, examples, operation techniques, etc. made by those skilled in the art based on this embodiment are of course all included in the scope of the present invention. 【Example】 【0051】 Hereinafter, the present invention will be described in detail with reference to examples. Note that the present invention is not limited to the examples shown below. 【0052】 The sound evaluation was performed using the floor structures of Example 1, Example 2, Comparative Example 1, and Comparative Example 2. In Example 1, Example 2, Comparative Example 1, and Comparative Example 2, the first floor base board and the floor finish material among the plurality of floor materials are the same, and the second floor base board has different floor structures. The first floor base board used a particle board with a short side × long side × thickness of 600 mm × 1820 mm × 20 mm. Also, the floor finish material used a flooring material with a thickness of 12 mm. Further, the interval between the floor support legs was set to 455 mm in the short side direction of the first floor base board and 623 mm in the long side direction of the first floor base board. 【0053】 The second floor base board of the floor structure of Example 1 is a gypsum board having a paper layer in the uppermost layer and the second layer from the bottom, a glass fiber layer in the lowermost layer, and a gypsum layer in the intermediate layer between the upper and lower paper layers, similar to the second floor base board described in the above embodiment. This second floor base board has a thickness of 12.5 mm, a weight of 25.8 kg per sheet, and a specific weight of 1.25 g / cm 3 It is. 【0054】 The second floor base board of the floor structure of Example 2 is a gypsum board having a paper layer in the uppermost layer and the second layer from the bottom, a glass fiber layer in the lowermost layer, and a gypsum layer in the intermediate layer between the upper and lower paper layers, similar to the second floor base board described in the above embodiment. This second floor base board has a thickness of 9.5 mm, a weight of 19.7 kg per sheet, and a specific weight of 1.25 g / cm 3 It is. 【0055】 The second subfloor board in the floor structure of Comparative Example 1 is a gypsum board in which the top and bottom layers are paper layers made of base paper for boards, and the middle layer is a gypsum layer. This second subfloor board has a thickness of 9.5 mm, a weight of 15.7 kg / sheet, and a specific weight of 1.1 g / cm³. 3 That is the case. 【0056】 The second subfloor board in the floor structure of Comparative Example 2 is a gypsum board having a layer containing nonwoven fabric. This second subfloor board has a thickness of 9.5 mm, a weight of 19.0 kg / sheet, and a specific weight of 1.21 g / cm³. 3 That is the case. 【0057】 The sounds produced when walking and when stepping on the floor structures of Examples 1, 2, Comparative Example 1, and Comparative Example 2 were evaluated by a panel of 10 people on a three-point scale. The details of each evaluation are as follows. ○: When the number of people who rated the noise as "noticeable" was 1 or less. △: When 2 to 7 people rated the noise as "noticeable". ×: When 8 or more people rated the noise as "noticeable". 【0058】 The results obtained are shown in Table 1. 【0059】 [Table 1] 【0060】 Based on the above, it has been confirmed that the floor structure described herein can suppress the generation of noise from the floor when walking. [Explanation of symbols] 【0061】 1: Floor structure 2: Floor slab 3: Floor support legs 4: Flooring 8: First floor underlayment board 9: Second floor underlayment board 9a:Paper layer 9b: Glass fiber layer 9c: Gypsum layer 10: Floor finishing materials 12: Base paper for boards (paper) 13: Glass fiber net (glass fiber) 16: Gum tape (sealing material)

Claims

[Claim 1] A floor structure in which multiple flooring materials are laid on top of floor support legs erected on a floor slab, The aforementioned plurality of flooring materials include a first floor baseboard supported from below by the floor support legs, a second floor baseboard positioned above the first floor baseboard, and a floor finishing material positioned above the second floor baseboard to form the floor surface. The second floor baseboard is a gypsum board formed in layers having a glass fiber layer containing glass fibers, The glass fiber layer of the second floor baseboard is provided in the lowest layer of the second floor baseboard, which is below the center in the thickness direction of the second floor baseboard. A floor structure characterized by the following features. [Claim 2] A floor structure in which multiple flooring materials are laid on top of floor support legs erected on a floor slab, The aforementioned plurality of flooring materials include a first floor baseboard supported from below by the floor support legs, a second floor baseboard positioned above the first floor baseboard, and a floor finishing material positioned above the second floor baseboard to form the floor surface. The second floor baseboard is a gypsum board formed in layers having a glass fiber layer containing glass fibers, The second floor subfloor board has a paper layer made of paper, which is provided as the uppermost layer. A floor structure characterized by the following features. [Claim 3] Multiple of the second floor baseboards are provided adjacent to each other, A sealing member is provided on the upper surface of the adjacent portions of the multiple second floor baseboards. The floor structure according to feature 2. [Claim 4] A floor structure in which multiple flooring materials are laid on top of floor support legs erected on a floor slab, The aforementioned plurality of flooring materials include a first floor baseboard supported from below by the floor support legs, a second floor baseboard positioned above the first floor baseboard, and a floor finishing material positioned above the second floor baseboard to form the floor surface. The second floor baseboard is a gypsum board formed in layers having a glass fiber layer containing glass fibers, The glass fibers in the glass fiber layer of the second floor baseboard are a glass fiber net arranged in a grid pattern. A floor structure characterized by the following features. [Claim 5] The thickness of the second floor subfloor board is set to 9.5 mm or more. The floor structure according to any one of claims 1 to 4. [Claim 6] The specific weight of the second floor baseboard is set to be between 1.18 g / cm³ and 1.30 g / cm³. The floor structure according to any one of claims 1 to 5.

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