JP2023016386A - Fireproof floor substrate structure and fireproof wooden floor unit - Google Patents

Abstract

To provide a wooden floor fireproof floor substrate structure in which a wooden floor provided with semi-fireproof construction or fireproof construction can be simply and easily formed by using a granular material.SOLUTION: A fireproof floor substrate structure 10 is provided to be interposed between a wooden floor member 12 forming a wooden floor 11 and a floor finishing material 13 and improves fireproof performance of the wooden floor 11. The fireproof floor substrate structure is constituted to include a granular material laying layer 14 comprising granular materials 14a laid on the upper surface of the wooden floor member 12 and a floor substrate surface material 15 mounted to cover the top of the granular material laying layer 14. Frame members 16 are mounted to be partitioned horizontally and vertically on the upper surface of the wooden floor member 12, and the granular material laying layer 14 is formed by the granular materials 14a laid to be filled into each section 17 partitioned by the frame members 16.SELECTED DRAWING: Figure 4

Description

TECHNICAL FIELD The present invention relates to a fire-resistant subfloor structure and a fire-resistant wooden floor unit, and more particularly to a fire-resistant subfloor structure interposed between a wooden floor member and a floor finishing material to improve the fire resistance performance of the wooden floor, and the fire-resistant subfloor structure. The present invention relates to fire resistant wooden floor units used in fire resistant subfloor structures.

Buildings in recent years are desired to have a quasi-fire-resistant structure or a fire-resistant structure so that the structural framework can be maintained even when subjected to fire heating. Various standards that can be designed for this purpose are stipulated in the Building Standards Law and the like.

For example, in a wooden building, as a wooden floor with less impact on the structural frame, preferably with a fireproof structure, a gypsum board, etc. Wood floors are known to have fire-resistant coatings made of wet materials such as concrete and face materials, but these fire-resistant coatings require fastening and curing, which takes time and effort to install, and can also be used during demolition. In addition to the heavy workload, these fireproof covering materials are difficult to reuse without treatment.

On the other hand, as a ceiling structure with excellent fire resistance and non-combustibility, which can be applied not only for new construction but also for renewal, it is highly effective in reducing floor impact noise on the upper floors. and a sound absorbing body placed on the ceiling. (See, for example, Patent Document 1).

JP-A-2014-37678

Granules such as perlite and sand are materials with excellent fire resistance and noncombustibility, and by laying them on wooden floor members such as CLT and LVL, a wooden floor with excellent fire resistance can be easily formed. However, in the above-mentioned Patent Document 1, granular materials such as perlite and sand are mainly used as materials for forming a ceiling structure that is highly effective in reducing floor impact noise. In order to use it as a material for forming a wooden floor preferably having a fireproof structure, it is necessary to newly adopt specific technical means in consideration of the characteristics and workability of the wooden floor.

The present invention provides a fire-resistant underfloor structure that enables the simple and easy formation of a wooden floor having a quasi-fire-resistant structure or a fire-resistant structure using granules, and a fire-resistant wooden floor unit used in the fire-resistant underfloor structure. intended to provide

The present invention provides a fire-resistant substrate structure interposed between a wooden floor member forming a wooden floor and a floor finishing material to improve the fire resistance performance of the wooden floor, and is laid on the upper surface of the wooden floor member. The object is achieved by providing a fire-resistant underfloor structure for a wooden floor, comprising a granule-laying layer and an underfloor facing covering the granule-laying layer. It is what I did.

In the refractory underfloor structure for wooden floors of the present invention, the granule laying layer has a thickness of 10 to 200 mm and is made of granules having a particle size of 25 mm or less and a density of 12 g/cm ³ or less. It is preferable that

Further, in the fireproof underfloor structure for wooden floors of the present invention, the granular material is preferably slag.

Further, in the fireproof underfloor structure for a wooden floor according to the present invention, the upper surface of the wooden floor member is vertically and horizontally partitioned by frame members attached thereto, and the granules are filled in the respective compartments partitioned by the frame member. It is preferable that the

Furthermore, in the fireproof underfloor structure for wooden floors of the present invention, it is preferable that each section partitioned by the frame member is a rectangular section.

Further, in the fireproof underfloor structure for wooden floors of the present invention, it is preferable that the frame member is formed using gypsum board, metal, wood, or resin.

Further, in the fire-resistant underfloor structure of the wooden floor of the present invention, it is preferable that the frame member also serves as a joist of the underfloor surface material.

Furthermore, in the fire-resistant underfloor structure of the wooden floor of the present invention, it is preferable that the surface material for the underfloor is made of one or more of gypsum board, wood, and cushioning material.

Further, in the fireproof subfloor structure of the wooden floor of the present invention, one or more of the lower gypsum board and the lower cushioning material are laid on the upper surface of the wooden floor member, and the lower gypsum board or the lower side It is preferable that the granule laying layer is formed on the upper surface of the cushioning material.

Further, in the fire-resistant underfloor structure for wooden floors of the present invention, it is preferable that the wooden floor member is formed using laminated veneer lumber or cross-laminated laminated boards.

Furthermore, in the fireproof underfloor structure for wooden floors of the present invention, it is preferable that the wooden floor members are formed using structural plywood.

The present invention also provides a fire-resistant wooden floor unit for forming the fire-resistant underfloor structure of the wooden floor, comprising: a wooden floor base member having a rectangular planar shape; By providing a fireproof wooden floor unit comprising: , which achieves the above objectives.

In the fireproof wooden floor unit of the present invention, it is preferable that the wooden floor base member has a rectangular planar shape measuring 30 to 1200 cm in length and width.

Further, in the fire-resistant wooden floor unit of the present invention, one or more of a lower gypsum board or a lower cushioning material is laid on the upper surface of the wooden floor base material, and the lower gypsum board or the lower cushioning material is laid. It is preferable that the frame member is attached to the upper surface of the partition, and the granular material is laid in each section.

According to the fire-resistant underfloor structure and fire-resistant wooden floor unit of the present invention, a wooden floor having a quasi-fire-resistant structure or a fire-resistant structure can be simply and easily formed using granules.

FIG. 1 is a schematic diagram illustrating a situation in which a plurality of fire-resistant wooden floor units are supported by beam frames and laid out vertically and horizontally to form a fire-resistant underfloor structure of wooden floors according to a preferred embodiment of the present invention. It is a perspective view. FIG. 2 is a schematic perspective view illustrating a fire resistant wooden floor unit forming a fire resistant wooden floor subfloor structure according to a preferred embodiment of the present invention. FIG. 3 is a cross-sectional view along line AA of FIG. 2, illustrating the configuration of the fireproof wooden floor unit. FIG. 4 is a schematic cross-sectional view along BB of FIG. 1 illustrating a wood floor fire resistant subfloor structure according to a preferred embodiment of the present invention. FIG. 5 is a schematic cross-sectional view illustrating another form of a fireproof subfloor structure for a wooden floor. 6(a) and 6(b) are schematic cross-sectional views illustrating other forms of fireproof subfloor structures and wooden floors.

A wooden floor fireproof underfloor structure 10 (see FIG. 4) according to a preferred embodiment of the present invention is constructed vertically and horizontally so as to connect each pair of adjacent column frames 50, as shown in FIG. By arranging a plurality of fire-resistant wooden floor units 20 having a configuration described later in rows and columns without gaps, the base structure of the wooden floor 11 having a quasi-fire-resistant structure, preferably a fire-resistant structure, is provided. to form The fire-resistant underfloor structure 10 of the present embodiment is a semi-fire-resistant structure, preferably a wooden structure having a fire-resistant structure, preferably by using slag as a granular material such as perlite or sand, which is a material excellent in fire resistance and noncombustibility. floor structure can be formed simply and easily.

As shown in FIG. 4, the fire-resistant underfloor structure 10 of the present embodiment is interposed between the wooden floor member 12 forming the wooden floor 11 and the floor finishing material 13. The subfloor structure for improving the fireproof performance comprises a granule laying layer 14 made of granules 14a laid on the upper surface of a wooden floor member 12, and a subfloor surface installed covering the top of the granule laying layer 14. - 特許庁The material 15 is included.

In addition, in this embodiment, the upper surface of the wooden floor member 12 is vertically and horizontally partitioned by the frame member 16, and the granular material 14a is filled in each of the partitions 17 partitioned by the frame member 16. It is laid to form a granule laying layer 14 .

Furthermore, in this embodiment, the wooden floor fireproof subfloor structure 10 preferably comprises a wooden floor base member 22 having a rectangular planar shape, and the upper surface of the wooden floor base member 22, as shown in FIGS. A refractory comprising a frame member 26 attached by partitioning it lengthwise and breadthwise, and granules 24a laid so as to be filled in each section 27 preferably rectangularly partitioned by the frame member 26. The wooden floor units 20 are supported by the beam frames 51 and arranged vertically and horizontally without gaps.

In this embodiment, the fire-resistant wooden floor units 20 forming the fire-resistant floor subfloor structure 10 are, as described above, comprised of wooden floor base members 22, frame members 26, and preferably rectangular shaped units partitioned by the frame members 26, respectively. and a granule laying layer 24 of granules 24a laid so as to be filled in the partition 27 (see FIGS. 2 and 3).

The wooden floor base member 22 is preferably made of CLT (cross-laminated timber) or LVL (laminated veneer lumber). It has a rectangular planar shape with a size of about 30 to 1200 cm. The wooden floor base member 22 is a wooden member having a thickness of about 2 to 50 cm. On the upper surface of the wooden floor base member 22, after attaching a lower gypsum board, a lower cushioning material, or a unit lower covering material 28 in which these are superimposed, the frame member 26 is preferably a gypsum board or a metal , a rectangular member made of wood or resin, a band plate member, a laminated member in which band plate members are laminated and joined together, or a composite member in which these are combined, By attaching the partitions, a rectangular compartment 27 is formed for filling and laying down the granules 24a (see FIG. 2). Each section 27 is filled with the granules 24a, and the granule laying layer 24 corresponding to the height of the frame member 26, preferably having a thickness of about 10 to 200 mm, is formed on the frame member. It is formed in a state of being divided at 26 portions.

Here, the grains 14a, 24a which are laid on the upper surface of the wooden floor base member 22 to be the wooden floor member 12 and form the grainy laying layers 14, 24 preferably have a grain size of 25 mm or less and a density of 12 g/ Various known granules having a size of cm ³ or less, such as perlite, sand, etc., can be used. In particular, it is preferable to use slag such as steel slag as the granular bodies 14a and 24a. By using slag such as steel slag as the granules 14a and 24a, it is possible to increase the heat capacity and improve the heat insulation performance, and to increase the weight to improve the sound insulation performance. Further, it is preferable that the granule laying layers 14, 24 of the granules 14a, 24a are formed with a thickness of about 10 to 200 mm as described above.

In this embodiment, the upper surface of the fireproof wooden floor unit 20 is supported by a frame member 26 and covered with a granule laying layer 24 of granules 24a filled in each section 27, preferably gypsum. A unit underfloor surface material 25 (see FIG. 3) made of a board can be attached. Like the wooden floor base member 22 and the unit lower covering material 28, the unit underfloor surface material 25 is preferably formed to have a rectangular planar shape with a size of about 30 to 1200 cm in length and width. A space for filling the granules 24a to form the granule laying layer 24 by filling the granules 24a between the wooden floor base member 22 and the frame member 26 which also serves as a joist can be attached in a held state.

In this embodiment, each of the fireproof wooden floor units 20 having the underfloor panel 25 attached to the upper surface thereof, which preferably has the above-described structure, is lifted to form, for example, a pair of adjacent units as shown in FIG. By connecting the column frames 50 and supporting them on the beam frames 51 installed vertically and horizontally, the suspended fireproof wooden floor units 20 are preferably arranged vertically and horizontally without gaps, thereby obtaining a structure as shown in FIG. , the wooden floor member 12 formed by the wooden floor base member 22 of the continuous fireproof wooden floor unit 20, and the partitions 17 vertically and horizontally partitioned by the frame members 16 and 26 on the upper surface of the wooden floor member 12 are filled with the fireproof wooden floor unit 20. granule laying layers 14, 24 made of granules 14a, 24a, and a continuous unit underfloor surface material 25 installed covering the upper side of these granule laying layers 14, 24. The fireproof underfloor structure 10 of the wooden floor of this embodiment, which includes the facing material 15 and the lower covering material 18 of the continuous unit lower covering material 28, is easily formed. . Various known floor finishing materials 13 such as carpet and flooring are installed on the upper surface of the underfloor surface material 15 formed by the continuous unit underfloor surface material 25 of the formed fireproof underfloor structure 10 . As a result, the wooden floor 11 having improved fireproof performance is formed by the fireproof underfloor structure 10 of the present embodiment.

According to the fire-resistant underfloor structure 10 of the wooden floor and the fire-resistant wooden floor unit 20 of the present embodiment having the above-described configuration, the wooden floor 11 having a quasi-fire-resistant structure or a fire-resistant structure is formed using the granules 14a and 24a. It becomes possible to form simply and easily.

That is, according to the present embodiment, the wooden floor fire-resistant underfloor structure 10 preferably formed by using the fire-resistant wooden floor unit 20 includes the granule laying layer 14 laid on the upper surface of the wooden floor member 12 and this Since the gypsum board includes the underfloor surface material 15 installed to cover the upper part of the granule laying layer 14, the gypsum board is produced by using the granules as a material having excellent fire resistance and noncombustibility. Compared to the installation of fireproof covering materials such as surface materials and wet materials such as concrete, by reducing the installation work such as time-consuming fastening and curing, it is possible to easily and easily create a quasi-fireproof structure or a fireproof structure. It becomes possible to form the wooden floor 11 having a structure and to reduce the work load at the time of dismantling. In addition, the granules can be reused without being treated.

Furthermore, according to this embodiment, the fire-resistant underfloor structure 10 of a wooden floor preferably formed using the fire-resistant wooden floor units 20 is composed of the wooden floor members 12 formed by connecting the wooden floor base members 22. Granular material-laying layers 14, 24 laid on the upper surface and composed of granular materials 14a, 24a filled in the respective compartments 17, 27; The fireproof performance of the wooden floor 11 can be easily improved by being interposed between the wooden floor member 12 forming the wooden floor 11 and the floor finishing material 13. It can be effectively improved by configuration.

FIG. 5 illustrates a wood floor fire resistant subfloor structure 10' according to another preferred embodiment of the present invention. In the fire-resistant underfloor structure 10' for a wooden floor of another embodiment shown in FIG. It is not a type floor member, but a drop-in type wooden floor member that is supported by joining both end faces to the upper side surfaces of the beam frame 51 . In addition, the granule laying layer 14' made of the granules 14a formed on the upper surface of the wooden floor member 12' and the upper end surface of the beam frame 51 is not partitioned by the frame member, and the granules 14a are kept in a continuous state. It is laid and formed. The granule laying layer 14' of the granules 14a can also be laid on the upper surface of the wooden floor member 12' and the upper end surface of the beam frame 51 in a state of being partitioned by a frame member. Further, the granular material-laying layer 14' is directly laid on the upper surface of the wooden floor member 12' and the upper end surface of the beam frame 51 without interposing the lower covering material, and is above the granular material-laying layer 14'. The wooden floor 11' with improved fireproof performance is formed by installing the underfloor surface material 15' and further attaching the floor finishing material 13. - 特許庁

The fire-resistant underfloor structure 10' of this other embodiment also uses granular material as a material having excellent fire resistance and noncombustibility. The function and effect of are exhibited.

It should be noted that the present invention is not limited to the above-described embodiments, and various modifications are possible. For example, the underfloor surface material and the unit underfloor surface material may be gypsum board, lumber, cushioning material, or a combination of two or more of these. As the cushioning material, a sound insulating felt sheet, a rubber member, a foam, or the like can be used. By using cushioning materials as underfloor surface materials and unit underfloor surface materials, it is possible to improve the sound insulation performance of wooden floors. The wooden floor member can be formed using various known wooden members such as CLT (cross-laminated timber) and LVL (laminated veneer lumber). As shown in FIG. 6( a ), the wooden floor member may be formed using structural plywood 30 . As shown in FIG. 6(b), the floor finishing material 13' provided above the underfloor surface material 15 is arranged on the upper surface of the double floor 31, and wiring and wiring are provided above the underfloor surface material 15. A space 32 can also be provided for sound insulation.

10, 10' fireproof underfloor structure of wooden floor 11, 11' wooden floor 12, 12' wooden floor member 13, 13' floor finishing material 14, 14' granule laying layer 14a granule 15 underfloor surface material 16 frame Member 17 Section 18 Lower covering material 20 Fireproof wooden floor unit 22 Wooden floor base member 24 Granular material laying layer 24a Granular material 25 Unit underfloor surface material 26 Frame member 27 Section 28 Unit lower covering material 30 Structural plywood 31 Heavy floor 32 Space 50 Column frame 51 Beam frame

Claims (14)

A fire-resistant substrate structure interposed between a wooden floor member forming a wooden floor and a floor finishing material to improve the fire-resistant performance of the wooden floor,
A fire-resistant underfloor structure for a wooden floor, comprising: a granule-laying layer laid on the upper surface of the wooden floor member; 2. The fireproof subfloor for a wooden floor according to claim 1, wherein said granular material laying layer is a laying layer having a thickness of 10 to 200 mm and made of granular materials having a particle diameter of 25 mm or less and a density of 12 g/cm ³ or less. structure. 3. A fireproof subfloor structure for a wooden floor according to claim 1 or 2, wherein said granular material is slag. A frame member is attached to vertically and horizontally partition the upper surface of the wooden floor member, and the granules are laid by being filled in each section partitioned by the frame member. 2. The fireproof underfloor structure of the wooden floor according to item 1. 5. The fire-resistant underfloor structure for a wooden floor according to claim 4, wherein each section partitioned by said frame member is a rectangular section. 6. The fireproof underfloor structure for wooden floors according to claim 4 or 5, wherein said frame member is made of gypsum board, metal, wood, or resin. The fireproof underfloor structure for a wooden floor according to any one of claims 4 to 6, wherein the frame member also serves as a joist of the surface material for the underfloor. The fireproof subfloor structure for a wooden floor according to any one of claims 1 to 7, wherein the subfloor surface material is made of one or more of gypsum board, wood, and cushioning material. At least one of a lower gypsum board and a lower cushioning material is laid on the upper surface of the wooden floor member, and the granular body laying layer is formed on the upper surface of the lower gypsum board or the lower cushioning material. The fireproof underfloor structure for wooden floors according to any one of claims 1 to 8. The fireproof underfloor structure for a wooden floor according to any one of claims 1 to 9, wherein said wooden floor member is formed using laminated veneer lumber or cross laminated board. The fireproof underfloor structure for a wooden floor according to any one of claims 1 to 8, wherein said wooden floor member is formed using structural plywood. A fireproof wooden floor unit for forming a fireproof subfloor structure for wooden floors according to any one of claims 1 to 11,
The wooden floor base member having a rectangular planar shape, the frame member attached to vertically and horizontally partition the upper surface of the wooden floor base member, and the partitions partitioned by the frame member so as to be filled. A fireproof wooden floor unit comprising the laid granules. 13. The fireproof wooden floor unit according to claim 12, wherein the wooden floor base member has a rectangular planar shape of 30 to 1200 cm in length and width. At least one of a lower gypsum board and a lower cushioning material is laid on the upper surface of the wooden floor base material, and the frame member is attached to the upper surface of the lower gypsum board or the lower cushioning material. 14. The fire resistant wooden floor unit of claim 13, wherein said granules are laid in the section of .

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