Architectural components

Abstract

The present invention provides a structural component that can suppress carbonization of the central part of the component by preventing heat from penetrating between the joints of wood materials in the event of a fire, even if the wood materials warp due to drying after construction, creating gaps between the joints. [Solution] In a structural member 1 made by joining multiple wooden materials 2 together, a heat intrusion suppression material 11 is pre-placed between the joint surfaces F of the wooden materials 2 to suppress the intrusion of heat.

Description

Technical Field

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[0001] The present invention relates to a structural component formed by joining a plurality of wooden materials.

Background Art

[0002] Patent Document 1 shows structural components (combined beams 10 and combined columns 20) formed by joining a plurality of wooden materials (wooden square timbers 11, 21).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When the structural component is formed by joining a plurality of wooden materials in this way, warping may occur in the wooden materials due to drying after construction, etc., and gaps may occur between the mating surfaces of the wooden materials. When a fire occurs, heat enters the gaps between the wooden materials, making the parts on the center side of the member, such as the core part of the structural component, liable to carbonize.

[0005] In view of this situation, the main problem of the present invention is to provide a structural component that can suppress carbonization of the parts on the center side of the member due to heat intrusion between the mating surfaces of the wooden materials when a fire occurs, even when warping occurs in the wooden materials due to drying after construction, etc., and gaps occur between the mating surfaces of the wooden materials.

Means for Solving the Problems

[0006] The first characteristic configuration of the present invention is a structural component formed by joining a plurality of wooden materials, wherein a heat intrusion suppressing material for suppressing heat intrusion is disposed in advance between the mating surfaces of the wooden materials.

[0007] According to this configuration, even if the wood material warps due to drying after construction, creating gaps between the joints of the wood material, by pre-installing a heat intrusion suppression material between the joints of the wood material, it is possible to prevent heat from entering the joints in the event of a fire, thereby suppressing carbonization of the central part of the structural members caused by heat intrusion between the joints.

[0008] A second characteristic feature of the present invention is that the heat penetration suppressing material is disposed on the surface side of the structural member between the joint surfaces of the wood materials.

[0009] According to this configuration, by placing the heat penetration suppressing material in the region on the surface side of the structural members between the joint surfaces of the wooden materials, it is possible to reduce the amount of heat penetration suppressing material used while obtaining a carbonization suppression effect on the central part of the structural members.

[0010] A third characteristic feature of the present invention is that the heat penetration suppressing material is disposed between the joint surfaces of the wood materials at least at the boundary between the member surface-side setting area, which is equal to the set thickness of the frame component, and the remaining member center-side area.

[0011] According to this configuration, by installing a heat penetration suppression material at the boundary between the surface-side setting area and the center-side setting area of ​​the structural member between the joint surfaces of wood materials, it is possible to suppress the detachment of the heat penetration suppression material even when the surface-side setting area of ​​the structural member is carbonized, while also obtaining a carbonization suppression effect on the center-side region of the structural member.

[0012] A fourth characteristic feature of the present invention is that the heat penetration suppression material is fixed to at least the central region of the frame component.

[0013] With this configuration, since the heat intrusion inhibitor is fixed to the central part of the member in the wood material, it is possible to prevent the heat intrusion inhibitor from falling off even if the surface area of ​​the structural member is carbonized during a fire. Furthermore, when fixing the heat intrusion inhibitor to the structural member in this way, for example, fixing the heat intrusion inhibitor to one of the joint surfaces of the wood material makes it easier to fix the heat intrusion inhibitor compared to fixing it to both joint surfaces.

[0014] A fifth characteristic feature of the present invention is that the heat penetration suppression material is made of an elastic material and is disposed between the mating surfaces in a compressed state.

[0015] According to this configuration, even if the wood material warps over time, the heat penetration suppression material, which is made of elastic material, elastically restores itself to fill the gaps formed between the joint surfaces. This effectively prevents heat from penetrating through the gaps between the joint surfaces when a fire occurs while the wood material is warped.

[0016] The sixth characteristic feature of the present invention is that the fire heat penetration suppression material is made of a thermal expansion material that expands with the heat of a fire.

[0017] With this configuration, even if the wood material warps due to aging or heat from a fire, the heat penetration suppression material, which is made of a thermal expansion material, expands to fill the gaps formed between the joint surfaces during a fire. This effectively prevents heat from penetrating through the gaps between the joint surfaces when a fire occurs while the wood material is warped.

[0018] A seventh characteristic feature of the present invention is that a sealing material is placed on the outside of the heat penetration suppression material.

[0019] With this configuration, the sealing material prevents the heat intrusion inhibitor from falling out from the joint surfaces between the wood materials. [Brief explanation of the drawing]

[0020] [Figure 1]Perspective view of the frame component [Figure 2] Exploded perspective view of the frame component [Figure 3] Plan view of the frame component [Figure 4] Plan view of the frame component in case of fire [Figure 5] Plan view of the frame component in case of fire without the heat intrusion prevention material installed [Figure 6] Plan view of the frame component of another embodiment (7)

Mode for Carrying Out the Invention

[0021] An embodiment of the frame component according to the present invention will be described based on the drawings. As shown in FIG. 1, the frame component 1 is composed of a plurality of wooden materials 2 joined together.

[0022] As shown in FIGS. 1 and 3, in this embodiment, the frame component 1 is a column and is composed of two wooden materials 2 joined together. Each of the two wooden materials 2 is a rectangular parallelepiped with a cross-sectional shape where the width in the front-rear direction X is wider than the width in the left-right direction Y. In a state where the two wooden materials 2 are aligned in the left-right direction Y (thickness direction), they are joined by joining materials 3 (see FIGS. 2 and 3) at a plurality of locations arranged in the up-down direction Z at the central location in the front-rear direction X.

[0023] As shown in FIGS. 2 and 3, the joining material 3 is composed of a bolt 7 inserted into an insertion hole 6 formed in the wooden material 2 and a pair of nuts 8 installed in the insertion hole 6. Also, both ends of the insertion hole 6 are blocked by blocking materials 9.

[0024] The structural member 1 is designed to allow for a certain amount of burn allowance around the outer periphery of its cross-section. In this embodiment, as shown in Figure 3, the structural member 1 has a surface-side setting area A1 on the outer periphery of its cross-section, which is a set thickness corresponding to, for example, one hour of burn allowance, and a center-side area A2, which is the part of the structural member 1 other than the surface-side setting area A1 and is located closer to the center than the surface-side setting area A1. The boundary between the surface-side setting area A1 and the center-side area A2 is indicated by a dashed line. In this embodiment, the set thickness (thickness of the surface-side setting area A1) is set to a thickness corresponding to the burn allowance as described above, and is specifically set to 45 mm.

[0025] As shown in Figure 5, even when the structural members 1 are joined together with the wooden members 2 in close contact, a gap G may occur at the joint surface F between the wooden members 2 due to warping of the wooden members 2 over time. Furthermore, if a fire occurs with a gap G between the joint surfaces F of the wood materials 2, as shown in Figure 5, the heat from the fire penetrates into the gap G, making the area A2 inside the member's center, beyond the surface area A1, more susceptible to burning, and potentially preventing the maintenance of sufficient strength. Figure 5 shows the structural member 1 when a fire occurs with a gap G between the joint surfaces F of the wood materials 2, with the areas that are carbonized or burned indicated by gray hatching. Therefore, in the event of a fire occurring when a gap G occurs between the joint surfaces F of the wood materials 2 as described above, a heat intrusion suppressing material 11 is pre-installed between the joint surfaces F of the wood materials 2 to prevent the fire from burning all the way to the central region A2 of the member. In this embodiment, the heat intrusion suppressing material 11 is made of a non-combustible elastic material (for example, rock wool) and is installed between the joint surfaces F in a compressed state.

[0026] By placing the heat intrusion suppressing material 11 in a compressed state between the joint surfaces F of the wood materials 2 in this manner, even if the wood materials 2 warp over time, the heat intrusion suppressing material 11, which is made of an elastic material, elastically restores itself to fill the gap G formed between the joint surfaces F. This effectively prevents heat from entering through the gap between the joint surfaces F even if a fire occurs while the wood materials 2 are warped.

[0027] The heat intrusion suppression material 11 is installed on the surface side of the structural member 1 between the joint surfaces F of the wood materials 2. In this embodiment, the "surface side of the structural member 1" is defined as the part outside the midpoint between the center and outer surface of the structural member 1 (the outer surface side of the structural member 1), and the heat intrusion suppression material 11 is installed outside the center of the structural member 1 in the gap G. The boundary B between the surface side setting region A1 and the center side region A2 is located on the surface side of the structural member 1.

[0028] To further explain the placement of the heat penetration suppression material 11, the heat penetration suppression material 11 is placed between the joint surfaces F of the wood materials 2 at the boundary B between the member surface-side setting area A1, which is at least the set thickness of the frame component 1, and the remaining member center-side area A2. In this embodiment, the heat penetration suppression material 11 is placed so as to extend from the member surface-side setting area A1 to the member center-side area A2.

[0029] The heat intrusion suppression material 11 is fixed to at least the central region A2 of the structural member 1. The heat intrusion suppression material 11 is made of an elastic material and is placed between the mating surfaces F in a compressed state. In other words, as shown in Figure 2, the heat penetration inhibitor 11 is fixed to one of the joint surfaces F of the two wood materials 2 using fastening means such as adhesive, double-sided tape, or staples, and the pair of wood materials 2 are joined together using a binding material 3 with the heat penetration inhibitor 11 fixed to the wood materials 2 in this state. The thickness of the heat penetration inhibitor 11 is greater than the gap G formed between the pair of joined wood materials 2, and the heat penetration inhibitor 11 is placed between the joint surfaces F in a compressed state.

[0030] Furthermore, the heat intrusion suppression material 11 is installed such that its outer end is located a set distance towards the center from the outer surface of the frame component member 1, and a space for sealing material 12 is formed on the outside of the heat intrusion suppression material 11 in the gap G, into which sealing material 12 can be filled. Then, by filling the space for sealing material in the gap G of the joint surface F between the wood materials 2 with sealing material 12, the sealing material 12 is positioned on the outside of the heat intrusion suppression material 11.

[0031] As shown in Figures 1 and 3, since a heat intrusion suppression material 11 made of an elastic material is pre-compressed and placed between the joint surfaces F of the wood materials 2, even if the wood materials 2 warp over time and the gap G between the joint surfaces F of the wood materials 2 widens, the heat intrusion suppression material 11 expands along with the widening of the gap G and seals the gap G. This prevents heat from penetrating between the joint surfaces F in the event of a fire, and as shown in Figure 4, it is possible to suppress carbonization of the central part of the structural member 1 due to heat penetrating between the joint surfaces F.

[0032] [Another embodiment] Other embodiments of the present invention will now be described. Note that the configurations of each embodiment described below are not limited to being applied individually, but can also be applied in combination with the configurations of other embodiments.

[0033] (1) In the above embodiment, a configuration in which the heat intrusion suppression material 11 is installed extending from the member surface side setting area A1 to the member center side area A2 was described as an example. However, the heat intrusion suppression material 11 may be installed in the member surface side setting area A1 such that the end of the heat intrusion suppression material 11 on the center side is located at boundary B, or the heat intrusion suppression material 11 may be installed in the member center side area A2 such that the end of the heat intrusion suppression material 11 on the surface side is located at boundary B.

[0034] (2) In the above embodiment, an example was described in which rock wool is used as the heat penetration suppression material 11. However, the heat penetration suppression material 11 may be made of other non-combustible elastic materials such as alkali earth silicate (AES) wool, or it may be made of a thermal expansion material.

[0035] (3) In the above embodiment, a configuration in which multiple wooden members 2 constituting the structural member 1 are two wooden members 2 with a rectangular cross-sectional shape was described as an example. However, the number of wooden members 2 constituting the structural member 1 and their cross-sectional shapes may be changed as appropriate, such as by using three or more wooden members 2 constituting the structural member 1, or by making the cross-sectional shape of some or all of the wooden members 2 constituting the structural member 1 square.

[0036] (4) In the above embodiment, a configuration in which the structural member 1 is a column was described as an example, but the structural member 1 may be a beam or the like, and can be any type of member that constitutes the frame.

[0037] (5) In the above embodiment, a configuration was described as in which the wooden material 2 is fastened with binding members 3 at multiple points arranged in a single line along the vertical direction Z at the center of the wooden material 2 in the front-to-back direction X. However, the positions of fastening with binding members 3 and the number of binding members 3 may be changed as appropriate, such as fastening the wooden material 2 in two rows along the vertical direction with binding members 3.

[0038] (6) In the above embodiment, an example was described in which the fastening material 3 is made up of bolts 7 and nuts 8, but the fastening material 3 may also be made up of screws or other materials other than bolts 7 and nuts 8.

[0039] (7) In the above embodiment, as shown in Figure 3, a configuration in which the heat penetration suppressing material 11 is placed between the flat mating surfaces F of the wood material 2 has been described as an example. However, as shown in Figure 6, a recess 13 may be formed in the mating surface F and the heat penetration suppressing material 11 may be placed in the recess 13. The recess 13 in which the heat penetration suppressing material 11 is placed may be formed in only one of the pair of mating surfaces F, as shown in Figure 6, or it may be formed in both of the pair of mating surfaces F.

[0040] (8) In the above embodiment, an example was described in which the set thickness (thickness of the set area A1 on the surface side of the member) is set to 45 mm, which corresponds to the burn allowance for a fire resistance time of 1 hour. However, the set thickness may be set to a thickness corresponding to the burn allowance for a fire resistance time other than 1 hour, and can be set to an appropriate thickness depending on the required fire resistance time, etc. [Explanation of Symbols]

[0041] 1 Frame components 2 Wood materials 11 Fire heat intrusion suppressing material 12. Sealant A1 Setting area on the surface side of the component A2 Area on the center side of the member B boundary F mating surface

Claims

1. A structural member made by joining together multiple pieces of wood, A structural member having a heat intrusion suppression material pre-installed between the joint surfaces of the aforementioned wood materials to suppress the intrusion of heat.

2. The structural member according to claim 1, wherein the heat penetration suppressing material is disposed on the surface side of the structural member between the joint surfaces of the wood materials.

3. The frame component according to claim 1 or 2, wherein the heat penetration suppressing material is disposed between the joint surfaces of the wood materials at least at the boundary between the member surface-side setting area equal to the set thickness of the frame component and the remaining member center-side area.

4. The frame component according to claim 3, wherein the heat intrusion suppression material is fixed to at least the central region of the frame component.

5. The frame component according to claim 1 or 2, wherein the heat penetration suppressing material is made of an elastic material and is disposed between the mating surfaces in a compressed state.

6. The frame component according to claim 1 or 2, wherein the aforementioned heat intrusion suppression material is made of a thermal expansion material that expands with the heat of a fire.

7. The structural member according to claim 1 or 2, wherein a sealing material is arranged on the outside of the heat intrusion suppressing material.

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