Fire-resistant covering structure for wooden structure and method for manufacturing thereof

Abstract

To provide a fire-resistant covering structure for wooden structures and a method for manufacturing thereof, which eliminate need for separate fire-resistant coverings on both high-tensile fiber materials and the wooden structures and improve construction efficiency.SOLUTION: A fire-resistant covering structure 12 in a wooden structure 11 made of timber used as columns or beams is constructed by: wrapping or attaching high-tensile fiber material 13 around the outer periphery of the wooden structure using an adhesive; covering the wrapped or attached high-tensile fiber material with fire-resistant covering material 14; and providing timber or finishing material 15 on the covered fire-resistant covering material.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a fire-resistant covering structure for a wooden structure and a method for manufacturing the same. [Background technology]

[0002] Conventionally, in order to improve the earthquake resistance of reinforced concrete (RC) structures such as beams and columns, high-tensile fiber materials have been wrapped around or attached using adhesives.

[0003] On the other hand, in order to improve earthquake resistance, even in wooden structures, high-tensile fiber materials are wrapped around or attached using adhesives or the like to reinforce joints and connections (see Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2018-13010 Summary of the Invention [Problem to be solved by the invention]

[0005] Conventional high-tensile fiber materials that are wrapped or attached for reinforcement have the disadvantage of being weak against high heat during a fire. Therefore, in order to maintain their reinforcing performance for a certain period of time during a fire, it is necessary to cover the high-tensile fiber materials with a fire-resistant covering material. Similarly, wooden structures also need to be covered with fire-resistant covering materials to withstand the high heat of a fire. In other words, it is necessary to apply fire-resistant coating to both the high-tensile fiber material and the wooden structure, which makes the construction procedure complicated and makes it difficult to streamline the construction process. Furthermore, there is a problem that when a wooden structure is covered with a high-tensile fiber material and a fire-resistant covering material, it becomes impossible to achieve a design that gives off a wood-like texture.

[0006] Therefore, in the case of the conventional example, there is a problem that must be solved: to avoid the inconvenience of applying fire-resistant coating to both the high-tensile fiber material and the wooden structure, thereby improving construction rationalization, and to maintain the design expression with a wood-like texture of the wooden structure. [Means for solving the problem]

[0007] The gist of the present invention, which aims to solve the problems of the above-mentioned conventional examples, is to provide a fire-resistant coated structure for a wooden structure made of wood, in which a high-tensile fiber material is wrapped or attached to the outer periphery of the wooden structure using an adhesive, and a fire-resistant coating material is applied to the wrapped or attached high-tensile fiber material.

[0008] Also, providing wood or a finish material on the coated fire-resistant covering; The wooden structure to which the high-tensile fiber material is wrapped or attached is located near the joint between beams; It includes: [Effects of the Invention]

[0009] According to the fire-resistant coated structure for a wooden structure and the manufacturing method thereof of the present invention, a high-tensile fiber material is wrapped or attached to the outer periphery of the wooden structure using an adhesive, and then a fire-resistant coating material is coated on top of the wrapped or attached high-tensile fiber material.This eliminates the need to apply fire-resistant coating to both the high-tensile fiber material and the wooden structure, thereby simplifying the construction procedure and achieving the excellent effect of improving construction rationalization.

[0010] In addition, by placing wood or a finishing material on top of the coated fire-resistant coating material, and especially by placing wood, a design expression with a wood-like texture, that is, ``exposed wood,'' can be achieved, resulting in the following effects. (i) The moisture absorption properties of wood can be utilized. Wood absorbs moisture from the air during periods of high humidity and releases moisture during periods of low humidity, contributing to improving the indoor environment. (b) The insulating properties of wood can be utilized. Wood has a lower thermal conductivity and higher insulating properties than other building materials, which contributes to improving the indoor environment and energy conservation in buildings. (c) The psychological effects of wood can be utilized. The scent of wood has a relaxing effect on the body, such as lowering blood pressure, and also has the effect of reducing stress and improving the function of immune cells. It has also been reported that contact with wood is less likely to cause physiological stress. Furthermore, it has also been reported that using wood for interior decoration gives positive visual impressions such as "warm," "bright," and "comfortable." In recent years, progress has been made in establishing evaluation methods and accumulating scientific evidence regarding the physiological and psychological effects of wood's olfactory, tactile, and visual stimuli on humans. (ii) In the case of pillars, the impact force in the event of a collision can be reduced by leaving the wood exposed. (e) The combustion properties of wood can be utilized. When the surface of wood catches fire, a carbonized layer is formed, preventing heat from penetrating into the interior. The rate at which wood burns and burns down is moderate, at 0.7 to 1.0 mm per minute, so fire safety can be improved by using it to reinforce fire-resistant coating materials. Furthermore, by providing a finishing material on the coated fire-resistant coating material, in addition to the above-mentioned wood, the finishing material can be vinyl cloth, calcium silicate board, wooden board, wooden sheet, metal plate, tile, stone, ceramic siding, or paint applied by painting, which has various excellent effects in that it is possible to realize a variety of design expressions using a variety of finishing materials. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a perspective view illustrating a fire-resistant covering structure for a wooden structure according to a first embodiment of the present invention. [Figure 2] 1 is a plan view illustrating a fire-resistant covering structure for a wooden structure according to a first embodiment of the present invention. [Figure 3] FIG. 10 is a perspective view illustrating a fire-resistant covering structure for a wooden structure according to a second embodiment of the present invention. [Figure 4]FIG. 10 is a plan view illustrating a fire-resistant covering structure for a wooden structure according to a second embodiment of the present invention. [Figure 5] FIG. 10 is a vertical cross-sectional view showing the vicinity of a joint between wooden beams (wooden structure) according to a third embodiment of the present invention, viewed from the front side. [Figure 6] FIG. 6 is a cross-sectional view taken along line A in FIG. 5. [Figure 7] FIG. 2 is a vertical cross-sectional view showing the vicinity of a joint portion provided with wood or a finishing material, viewed from the front side. [Figure 8] FIG. 8 is a cross-sectional view taken along line B in FIG. 7. [Figure 9] FIG. 10 is a longitudinal sectional view showing, from the front side, a wooden structure formed by joining wooden beams together according to a fourth embodiment of the present invention, joined to a concrete slab. [Figure 10] FIG. 10 is a cross-sectional view taken along line C in FIG. 9. [Figure 11] FIG. 2 is a vertical cross-sectional view showing the vicinity of a joint portion provided with wood or a finishing material, viewed from the front side. [Figure 12] FIG. 12 is a cross-sectional view taken along line D in FIG. [Figure 13] FIG. 10 is a cross-sectional view of a joint between a wooden through column and a beam in a two-way rigid frame wooden structure according to a fifth embodiment of the present invention. [Figure 14-1] FIG. 1 is a cross-sectional view of a joint between a wooden through-column and a beam, with wood or finishing materials provided. [Figure 14-2] FIG. 1 is a cross-sectional view of a joint between a wooden through-column and a beam, with wood or finishing materials provided. [Figure 15] FIG. 10 is a cross-sectional view of a joint between a wooden through column and a beam in a two-way rigid frame wooden structure according to a sixth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0012] The fire-resistant coated structure and manufacturing method for a wooden structure made of wood used as columns and beams of the present invention involves wrapping or attaching a high-tensile fiber material around the outer periphery of the wooden structure using an adhesive, and then covering the wrapped or attached high-tensile fiber material with a fire-resistant coating material.This eliminates the need to apply fire-resistant coating to both the high-tensile fiber material and the wooden structure, thereby simplifying the construction procedure and improving construction rationalization. [Example]

[0013] A first embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a perspective view illustrating a fire-resistant covering structure for a wooden structure, and Fig. 2 is a plan view illustrating the fire-resistant covering structure for a wooden structure.

[0014] As shown in Figures 1 and 2, the present invention is a fire-resistant coated structure 12 for a wooden structure 11 made of wood used as pillars and beams, in which a high-tensile fiber material 13 is wrapped or attached to the outer periphery of the wooden structure 12 using an adhesive, and a fire-resistant coating material 14 is coated on the wrapped or attached high-tensile fiber material 13.

[0015] Specifically, the high-tensile fiber material 13 is a carbon fiber sheet, an aramid fiber sheet, a glass fiber sheet, or a laminated material of a fiber material.

[0016] Specifically, the fire-resistant coating material 14 is reinforced gypsum board, gypsum board, calcium silicate board, rock wool board, fire-resistant sheet, heat-expandable fire-resistant sheet, fire-resistant paint, or burner wood, and also includes fire-resistant coating materials that are a combination of these materials.

[0017] According to the fire-resistant coated structure for a wooden structure and the manufacturing method thereof configured as described above, there is no need to apply fire-resistant coating to both the high-tensile fiber material 13 and the wooden structure 11, which simplifies the construction procedure and improves construction efficiency. [Example]

[0018] Next, a fire-resistant covering structure for a wooden structure and a manufacturing method thereof according to a second embodiment of the present invention will be described. In this second embodiment, the same parts as those in the first embodiment are designated by the same reference numerals, and details thereof will be omitted. FIG. 3 is a perspective view illustrating the fire-resistant covering structure 12 in the wooden structure 11, and FIG. 4 is a plan view illustrating the fire-resistant covering structure 12 in the wooden structure 11.

[0019] The structure is such that wood or finishing material 15 is provided on top of the fire-resistant covering material 14 . Specifically, the wood or finishing material 15 is not only the wood mentioned above, but also vinyl cloth, calcium silicate board, wooden board, wooden sheet, metal plate, tile, stone, ceramic siding, or paint applied by painting. Therefore, it is possible to realize a variety of design expressions using a variety of finishing materials.

[0020] In addition, by using wood as a finishing material, the design has a wood-like feel, that is, it has an "exposed wood" feel, which results in the following effects (a) to (e). (i) The moisture absorption properties of wood can be utilized. Wood absorbs moisture from the air during periods of high humidity and releases moisture during periods of low humidity, contributing to improving the indoor environment. (b) The insulating properties of wood can be utilized. Wood has a lower thermal conductivity and higher insulating properties than other building materials, which contributes to improving the indoor environment and energy conservation in buildings. (c) The psychological effects of wood can be utilized. The scent of wood has a relaxing effect on the body, such as lowering blood pressure, and also has the effect of reducing stress and improving the function of immune cells. It has also been reported that contact with wood is less likely to cause physiological stress. Furthermore, it has also been reported that using wood for interior decoration gives positive visual impressions such as "warm," "bright," and "comfortable." In recent years, progress has been made in establishing evaluation methods and accumulating scientific evidence regarding the physiological and psychological effects of wood's olfactory, tactile, and visual stimuli on humans. (ii) In the case of pillars, the impact force in the event of a collision can be reduced by leaving the wood exposed. (e) The combustion properties of wood can be utilized. When the surface of wood catches fire, a carbonized layer is formed, preventing heat from penetrating into the interior. The rate at which wood burns and burns down is moderate, at 0.7 to 1.0 mm per minute, so fire safety can be improved by using it to reinforce fire-resistant coating materials.

[0021] According to the fire-resistant coated structure for a wooden structure and its manufacturing method configured as described above, by providing wood or finishing material 15 on the coated fire-resistant coating material 14, it is possible to realize not only a design expression with a wood-like texture that is ``exposed wood,'' but also a variety of design expressions using a variety of finishing materials. [Example]

[0022] Next, a fire-resistant covering structure for a wooden structure and a manufacturing method thereof according to a third embodiment of the present invention will be described. In this third embodiment, the same parts as those in the first or second embodiment are designated by the same reference numerals, and details thereof will be omitted. FIG. 5 is a vertical cross-sectional view showing the vicinity of a joint 22 between wooden beams 21 (wooden structure 11) from the front side, and FIG. 6 is a cross-sectional view taken along line A in FIG.

[0023] An insertion hole 24 for inserting a connecting steel rod 23 is drilled in each end 21a of the beams 21, and after the connecting steel rod 23 is inserted into the insertion hole 24, the end portions 21a of the beams 21 are butted together. Then, adhesive is injected into the gap between the insertion hole 24 and the connecting steel rod 23 through an injection hole provided in the beam 21 (neither is shown).

[0024] Next, high-tensile fiberboards 25 are attached or fastened to the upper and lower parts of the butt-jointed beams 21 across both beams 21 to reinforce the bending stress acting on the joints 22.

[0025] Furthermore, a high-tensile fiber sheet (high-tensile fiber material 13) is wrapped in a single or multiple layers across the upper high-tensile fiber boards 25 and the lower high-tensile fiber boards 25 between the beams 21 to further reinforce the shear stress acting on the joints 22.

[0026] By covering the adhered or fastened high-tensile fiberboards 25 with the fire-resistant covering material 14, a joint 22 of the wooden structure 11 having fire resistance is formed.

[0027] As shown in Figures 7 and 8, wood or finishing material 15 can be applied on top of the fire-resistant coating material 14 coated in this manner, making it possible to achieve a design expression with a wood-like texture or a variety of other design expressions on the surface of the wooden structure 11. FIG. 7 is a vertical cross-sectional view showing the vicinity of the joint 22 provided with the wood or finishing material 15 from the front side, and FIG. 8 is a cross-sectional view taken along line B in FIG. [Example]

[0028] Next, a fourth embodiment of the fire-resistant covering structure for a wooden structure and a manufacturing method thereof will be described. In this fourth embodiment, the same parts as those in the first, second, or third embodiment are designated by the same reference numerals, and details thereof will be omitted. Fig. 9 is a longitudinal cross-sectional view from the front side showing a wooden structure 11, in which beams 21 are joined together, joined to a concrete slab 28, with a sleeve 26 for facility piping provided at the joint 22. Fig. 10 shows a cross-sectional view taken along line C in Fig. 9.

[0029] A semicircular sleeve groove is cut in each end 21a of the beams 21 so that a circular sleeve 26 is formed when the end portions 21a of the beams 21 to be joined are butted against each other. Then, the ends 21a of the beams 21 are butted together and connected to form a circular sleeve 26 between the upper and lower connecting steel bars 23. Although each drawing shows a circular sleeve 26, it goes without saying that a square sleeve may also be used.

[0030] Next, high-tensile fiberboards 25 are pasted or fastened to the upper and lower parts of the butt-jointed beams 21, spanning both beams 21. Furthermore, a high-tensile fiber sheet (high-tensile fiber material 13) is wound around the upper high-tensile fiber board 25 of the beam 21 and the lower high-tensile fiber board 25 in a single or multiple layers.

[0031] The high-tensile fiber sheet is then cut out along the sleeve 26. In this way, the joint 22 with the sleeve is formed, which is reinforced against bending stress and shear stress acting on the joint 22.

[0032] Furthermore, the high-tensile fiber sheet is covered with a fire-resistant covering material 14. In this case, a fire-resistant covering material 14 having an insertion hole cut out in the shape of the sleeve 26 is used to form the insertion hole of the sleeve 26. The inside of the sleeve 26 is also covered with the fire-resistant covering material 14. In this way, a joint part 22 with a sleeve having fire-resistant properties is formed.

[0033] The upper part of the beam 21 is provided with high-tensile fiberboard 25 and high-tensile fiber sheet (high-tensile fiber material 13), which creates a step. To deal with the step, gap filler 27 such as wood or calcium silicate board is installed, and a concrete slab 28 is then placed on top of that (see Figures 9 and 11).

[0034] On top of the fire-resistant covering material 14 thus covered, wood or a finishing material 15 can be provided as shown in FIGS. That is, wood or finishing material 15 is provided on the front and back surfaces of joint portion 22. In this case, the insertion hole of sleeve 26 is formed by using wood or finishing material 15 having an insertion hole cut out in the shape of sleeve 26. Additionally, wood or finishing material 15 is provided on the upper and lower parts of the joint portion 22 . By adopting such a configuration, it is possible to provide a sleeve 26 for equipment piping on the wooden structure 11 of the beam material 21 having fire resistance, and it is also possible to realize a design expression with a wood texture on the surface of the wooden structure 11, as well as a variety of other design expressions. [Example]

[0035] Next, a fire-resistant covering structure for a wooden structure according to a fifth embodiment of the present invention will be described. In this fifth embodiment, the same parts as those in the first or second embodiment will be designated by the same reference numerals, and details thereof will be omitted. Figure 13 is a cross-sectional view of the joint between a wooden continuous column 31 and a beam 32 in a wooden two-way rigid frame structure, and Figure 14 is a cross-sectional view of the joint between a wooden continuous column 31 and a beam 32 provided with wood or finishing materials. In Figures 13, 14-1, and 14-2, reference numeral 33 denotes a metal joint that joins the wooden through column 31 and the beam 32, reference numeral 34 denotes a steel rod, reference numeral 35 denotes an anchoring reinforcement plate, reference numeral 36 denotes a high-strength nut, and reference numeral 37 denotes a high-strength bolt.

[0036] The structure is such that high-tensile fiber material 13 is wrapped or attached using adhesive around the outer periphery of the wooden through columns 31, beams 32 and joints, and fire-resistant covering material 14 is then coated on top of the wrapped or attached high-tensile fiber material 13. As shown in FIGS. 14-1 and 14-2, wood or a finishing material 15 can be provided on the coated fire-resistant covering material 14. Figure 14-1 shows a case where the steel rods 34, anchoring reinforcement plates 35, and high-strength bolts 37 are located on the outside of the wooden structure 11. In this case, the fire-resistant covering material 14 is fastened by using a base material 38 to adjust the unevenness of the bolts. Figure 14-2 shows a case where a wooden structure 11 is countersunk to form a recess, and steel rods 34, anchoring reinforcement plates 35, and high-strength bolts 37 are placed inside the recess. In this case, the fire-resistant covering material 14 and wood or finishing material 15 are laid flat and fastened. [Example]

[0037] Next, a sixth embodiment of the fire-resistant covering structure for a wooden structure according to the present invention will be described. In this fifth embodiment, the same parts as those in the first, second, or fifth embodiments will be designated by the same reference numerals, and details thereof will be omitted. FIG. 15 is a cross-sectional view of a joint between a wooden through column 31 and a beam 32 in a wooden two-way rigid frame structure.

[0038] As in the fifth embodiment, high-tensile fiber material 13 is wrapped or attached using an adhesive around the outer periphery of wooden through columns 31, beams 32, and their joints, and then the wrapped or attached high-tensile fiber material 13 is covered with fire-resistant covering material 14. Furthermore, wood or finishing material 15 can be placed on top of the covered fire-resistant covering material 14.

[0039] The protruding portions of the anchoring reinforcement plate 35 and the high nuts 36 are fixed with a base material 38 to adjust the unevenness, and the high-tensile fiber material 13 and the fire-resistant covering material 14 are fastened to the base material 38. The base material 38 is, for example, wood, lightweight steel frame, calcium silicate board, etc. Also, as in the part of the beam 32 on the right side in FIG. 15, it is possible to fasten the high-tensile fiber material 13 and the fireproof covering material 14 to the beam 32 (wooden structure 11) with screws, nails, or the like. Alternatively, as in the lower beam 32 portion in Figure 15, it is possible to fasten high-tensile fiber material 13 or fire-resistant covering material 14 at the required distance from the beam 32 (wooden structure 11) using a base material 38 in between. [Explanation of symbols]

[0040] 11 Wooden structure 12 Fireproof coating structure 13 High-tensile fiber material (high-tensile fiber sheet) 14 Fireproof cladding 15 Wood or finishing materials 21 Beam material 22 Joint 21a End 23 Connected steel rod 24 Insertion hole 25 High-tensile fiberboard 26 Sleeve 27 Gap Filler 28 Concrete slab 31 Wooden through pillar 32 Beam 33 Metal joints 34 steel rod 35 Fixing reinforcement plate 36 High Nut 37 High-strength bolt 38 Undercoat

Claims

1. A fire-resistant covering structure for a wooden structure made of wood, a high-tensile fiber material is wound or attached to the outer periphery of the wooden structure using an adhesive; A fire-resistant coating material is applied to the wound or attached high-tensile fiber material. A fire-resistant covering structure for a wooden structure, characterized by:

2. and providing wood or a finishing material on the coated fire-resistant covering material. The fire-resistant coated structure for a wooden structure according to claim 1,

3. The wooden structure to which the high-tensile fiber material is wrapped or attached is located near the joint between beams. The fire-resistant coated structure for a wooden structure according to claim 1,

4. A method for manufacturing a fire-resistant covering structure for a wooden structure made of wood, comprising: a high-tensile fiber material is wound or attached to the outer periphery of the wooden structure using an adhesive; and covering the wound or attached high-tensile fiber material with a fire-resistant covering material. A method for manufacturing a fire-resistant coated structure for a wooden structure, characterized by the above.

5. providing wood or a finish material on the coated fire-resistant covering material; 5. The method for manufacturing a fire-resistant coated structure for a wooden structure according to claim 4,

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