Roof structure

Abstract

To provide a roof structure capable of improving fire resistance performance.SOLUTION: A roof structure 100 according to an embodiment employs a deck plate 2, the roof structure 100 including a lamination part 3 in which a plurality of sheathing roof boards 31 are stacked in the height direction on the deck plate 2. In the lamination part 3, abutting joints 32, 32 of the sheathing roof boards 31 adjacent to each other in the height direction are arranged being deviated from each other. The roof structure 100 may further include a joint member 6 for joining to the deck plate 2 by penetrating the lamination part 3. The roof structure 100 may further include a heat insulation material 4 provided on the lamination part 3.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a roof structure using a deck plate. [Background technology]

[0002] In roof structures using deck plates, a fire-resistant sheathing board may be installed on top of the deck plate to ensure fire resistance.

[0003] Patent Document 1 discloses a roof structure in which sheathing boards, insulation material, and waterproofing material are layered in sequence on a deck plate fixed to a beam or main roof, where the sheathing boards are made of hard wood wool cement boards and the insulation material has a thickness of more than 50 mm. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-928 Summary of the Invention [Problem to be solved by the invention]

[0005] Because sheathing boards are standardized with dimensions such as 910mm x 1820mm, when they are laid on a deck plate, joints are created where the sheathing boards meet. In this regard, the technology disclosed in Patent Document 1 involves laying a single layer of sheathing boards on top of a deck plate. This creates the risk that the sheathing boards will shrink due to heat during a fire, opening up the joints between the sheathing boards. If insulation or waterproof sheets are installed on top of the sheathing boards, the flames and heat from a fire may directly hit the insulation or waterproof sheet through the gaps in the sheathing boards, causing a sudden rise in the temperature of each component. This could result in the destruction of each component, potentially preventing the expected fire resistance from being achieved.

[0006] The present invention has been devised in view of the above circumstances, and an object of the present invention is to provide a roof structure that can improve fire resistance. [Means for solving the problem]

[0007] The roof structure of the present invention is a roof structure using a deck plate, and is characterized in that it has a stacked section in which multiple sheathing boards are laid out on top of the deck plate and stacked in the vertical direction, and the stacked section is arranged so that the butt joints of adjacent sheathing boards are offset in the vertical direction. [Effects of the Invention]

[0008] According to the present invention, a stacked section is provided in which sheathing boards are stacked in multiple layers in the height direction on a deck plate, and the stacked section is arranged so that the butt joints of adjacent sheathing boards in the height direction are offset. As a result, even if the butt joints of the first layer sheathing boards open, the second layer sheathing boards above the first layer can prevent the flames and heat of a fire from directly hitting the insulation material, thereby improving fire resistance. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is an exploded perspective view showing an example of a roof structure according to an embodiment. [Figure 2] FIG. 2 is a side view showing an example of a roof structure in the embodiment. [Figure 3] FIG. 3 is a plan view showing an example of a laminated portion of a roof structure in an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments for carrying out a roof structure to which the present invention is applied will be described in detail with reference to the drawings.

[0011] As shown in FIGS. 1 to 3, the roof structure 100 is a roof structure that uses a deck plate 2. The roof structure 100 includes a beam 1, the deck plate 2, a laminated portion 3, a heat insulating material 4, and a waterproof layer 5. The roof structure 100 may further include a connecting member 6.

[0012] The beam 1 is made of steel materials such as steel sections, such as H-shaped steel and lip channel steel, and steel pipes. The beam 1 may also be made of wood-based materials.

[0013] A plurality of deck plates 2 are arranged side by side on the beam 1. The longitudinal ends of the deck plates 2 are joined to the beam 1 by joining members such as screws.

[0014] The laminated section 3 is formed by stacking a plurality of sheathing boards 31 in the height direction, which are laid out on the deck plate 2. In the example of Fig. 2, the laminated section 3 has three layers of sheathing boards 31 stacked in the height direction. Note that in the present invention, the laminated section 3 may have two or more layers of sheathing boards 31 stacked together.

[0015] As shown in Fig. 3, in the laminated portion 3, the butt joints 32, 32 of adjacent sheathing boards 31 in the height direction are offset from each other. That is, as shown in Fig. 2, the butt joints 32 of the sheathing boards 31 of the first layer above the deck plate are offset from the butt joints 32 of the sheathing boards 31 of the second layer above the first layer. Similarly, the butt joints 32 of the sheathing boards 31 of the second layer are offset from the butt joints 32 of the sheathing boards 31 of the third layer above the second layer.

[0016] The dimensions of the sheathing board 31 are, for example, 910 mm x 1820 mm. Well-known sheathing boards such as cement wood wool boards, cement wood chip boards, and gypsum boards are used for the sheathing boards 31. The thickness of each sheathing board 31 is, for example, 9 mm. In this case, the thickness of the laminated portion 3, in which three layers of sheathing boards 31 are laminated, is about 27 mm. The thickness of the sheathing boards 31 may be, for example, about 4 mm to 25 mm. The thickness of the laminated portion 3 may be, for example, about 8 mm to 75 mm, and is preferably, for example, less than 50 mm.

[0017] The heat insulating material 4 is provided on the laminated portion 3. As the heat insulating material 4, a well-known heat insulating material such as polyethylene foam, polystyrene foam, polyurethane foam, or phenol foam is used.

[0018] The waterproof layer 5 is provided on the heat insulating material 4. As the waterproof layer 5, a well-known waterproof layer such as asphalt waterproofing or vinyl chloride resin waterproofing is used.

[0019] The joining member 6 penetrates the laminated section 3 and joins the laminated section 3 to the deck plate 2. The joining member 6 is disposed away from the butt joint 32. The joining member 6 is, for example, a screw.

[0020] According to this embodiment, a stacked section 3 is provided in which multiple sheathing boards 31 are stacked in the height direction on a deck plate 2, and the stacked section 3 is arranged so that the butt joints 32, 32 of adjacent sheathing boards 31 in the height direction are offset from each other. As a result, even if the butt joints 32 of the sheathing boards 31 of the first layer open, the sheathing boards 31 of the second layer above the first layer can prevent the flames and heat of a fire from directly hitting the insulation material 4. This improves fire resistance. Furthermore, according to this embodiment, the beam span can also be increased.

[0021] According to this embodiment, a joining member 6 is further provided to penetrate the laminated section 3 and join it to the deck plate 2. This prevents the laminated section 3 from shifting relative to the deck plate 2. This makes it difficult for the butt joints 32 to open, further improving fire resistance.

[0022] According to this embodiment, the heat insulating material 4 is further provided on the laminated portion 3. This can further improve the fire resistance performance.

[0023] Although the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. Furthermore, the present invention can be embodied in various novel forms in addition to the above-described embodiments. Therefore, various omissions, substitutions, and modifications are possible in the above-described embodiments without departing from the spirit and scope of the present invention. Such novel forms and modifications are included within the scope and spirit of the present invention, as well as within the scope of the inventions set forth in the claims and equivalents of the inventions set forth in the claims. [Explanation of symbols]

[0024] 100: Roof structure 1:Beam 2: Deck plate 3: Laminated section 31: Field board 32: Butt joint 4: Insulation material 5: Waterproof layer 6: Joint material

Claims

1. A roof structure using a deck plate, It has a laminated section in which multiple sheathing boards are laid on top of the deck plate and stacked in the height direction. The laminated portion is arranged so that the butt joints of the sheathing boards adjacent in the height direction are shifted from each other. A roof structure characterized by:

2. Further provided is a joining member for joining the deck plate through the laminated portion.

2. The roof structure according to claim 1,

3. Further comprising a heat insulating material provided on the laminated portion.

3. The roof structure according to claim 1 or 2, characterized in that:

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