Reinforcement structure of wooden members

Abstract

To provide a reinforcement structure for a wooden member capable of effectively reinforcing the wooden member by the reinforcement member.SOLUTION: A reinforcement structure for a wooden member comprises a wooden member, and a reinforcement member provided on a first surface of the wooden member and a second surface opposite to the first surface and integrated with the wooden member. The first surface is an upper surface facing upward, and on the first surface, an upper surface groove extending along a material axis direction is formed only at both ends in the material axis direction, and an upper steel plate as the reinforcement member is inserted into the upper surface groove of the first surface. On the second surface, a lower surface groove extending along the material axis direction is formed only at both ends in the material axis direction, and a lower steel plate as the reinforcement member is inserted into the lower surface groove of the second surface.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a reinforcing structure for wooden members. [Background technology]

[0002] Wood members can be reinforced by integrating reinforcing members into them. For example, Patent Document 1 discloses a wood member formed by stacking multiple laminas and flat plates, with reinforcing members inserted into grooves formed on the joint surfaces between the flat plates. Patent Document 2 also discloses a laminated lumber formed by stacking multiple laminas, with fiber wires (reinforcing members) inserted into grooves formed on the joint surfaces between the laminas. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-118069 [Patent Document 2] Japanese Patent Application Laid-Open No. 2013-28028 Summary of the Invention [Problem to be solved by the invention]

[0004] For example, in wooden members such as wooden beams, the tensile or compressive force generated by bending the wooden member is generally greatest on the outer peripheral surfaces such as the top and bottom. However, in the wooden member shown in Patent Document 1 and the laminated lumber shown in Patent Document 2, reinforcing members are provided on the joint surfaces of the flat plates or lamina. In other words, since reinforcing members are not provided on the outer peripheral surfaces such as the top and bottom of the wooden member and the laminated lumber, the wooden member cannot be efficiently reinforced by the reinforcing members.

[0005] In view of the above, the present disclosure aims to provide a reinforcing structure for wooden members that can efficiently reinforce wooden members with reinforcing members. [Means for solving the problem]

[0006] The reinforcing structure for a wooden member described in a first aspect comprises a wooden member, and reinforcing members provided on a first surface of the wooden member and a second surface opposite the first surface and integrated into the wooden member, wherein the first surface is an upper surface facing upward and the second surface is a lower surface facing downward, and an upper surface groove extending along the material axis direction is formed on the first surface only at both ends of the material axis direction, and an upper steel plate serving as the reinforcing member is inserted into the upper surface groove on the first surface, and a lower surface groove extending along the material axis direction is formed on the second surface only at both ends of the material axis direction, and a lower steel plate serving as the reinforcing member is inserted into the lower surface groove on the second surface.

[0007] According to the above configuration, the wooden member can be efficiently reinforced by the reinforcing member.

[0008] The reinforcing structure for wooden members described in the second aspect is the reinforcing structure for wooden members according to the first aspect, in which the cross-sectional area of ​​the lower groove is made larger than the cross-sectional area of ​​the upper groove, and the second moment of area of ​​the lower steel plate is made larger than the second moment of area of ​​the upper steel plate.

[0009] The reinforcing structure for wooden members described in the third aspect is a reinforcing structure for wooden members according to the first or second aspect, in which the upper steel plate has a rectangular cross section, the lower steel plate has a rectangular cross section, and the height of the lower steel plate is greater than the height of the upper steel plate.

[0010] The reinforcing structure for wooden members described in the fourth aspect is a reinforcing structure for wooden members according to the first or second aspect, in which the upper steel plate has a rectangular cross section, the lower steel plate has a rectangular cross section, and the width of the lower steel plate is wider than the width of the upper steel plate. [Effects of the Invention]

[0011] According to the reinforcement structure for a wooden member according to the present disclosure, the wooden member can be efficiently reinforced by the reinforcing member. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a perspective view showing a reinforcement structure for a wooden member according to a first embodiment (reference embodiment). [Figure 2] 1 is a front view showing an example of reinforcement against a long-term bending load in a reinforcement structure for a wooden member according to a first embodiment (reference embodiment). FIG. [Figure 3] 1 is a front view showing an example of reinforcement against earthquake loads in a reinforcement structure for a wooden member according to a first embodiment. FIG. [Figure 4] FIG. 10 is a perspective view showing a reinforcement structure for a wooden member according to a second embodiment. [Figure 5] FIG. 1(A) is a perspective view showing a reinforcement structure for a wooden member according to a first modified example, and FIG. 1(B) is a perspective view showing a reinforcement structure for a wooden member according to a second modified example. [Figure 6] 10(A) is a perspective view showing a reinforcing member of a reinforcement structure for a wooden member according to a third modified example, and FIG. 10(B) is a cross-sectional view showing the state after the reinforcing member shown in FIG. 10(A) has been inserted into a groove. [Figure 7] 10(A) is a cross-sectional view showing a reinforcement structure for a wooden member according to a fourth modified example (reference example), and FIG. 10(B) is a cross-sectional view showing a reinforcement structure for a wooden member according to a fifth modified example. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, the reinforcing structures and reinforcing methods for wooden members according to the first and second embodiments and first to fifth modifications of the present invention will be described in order using Figures 1 to 7. In the figures, arrow X indicates the horizontal direction or the axial direction of the wooden member, and arrow Y indicates the vertical direction or the height direction of the wooden member.

[0014] First Embodiment First, a reinforcement structure and a reinforcement method for a wooden member according to a first embodiment of the present invention will be described with reference to FIGS.

[0015] (reinforced structure) As shown in Fig. 1, a reinforcement structure 10 for wooden members of this embodiment has a wooden beam 12 as an example of a wooden member. The wooden beam 12 has, for example, a rectangular cross section and is made of laminated wood in which a plurality of wooden lamina members (not shown) are stacked and glued together. Note that the reinforcement structure 10 for wooden members shown in Fig. 1 is a reference form.

[0016] An upper surface groove 14 extending along the material axis direction of the wooden beam 12 is formed in the widthwise center of the upper surface 12A (first surface) of the wooden beam 12. Similarly, a lower surface groove 16 extending along the material axis direction of the wooden beam 12 is formed in the widthwise center of the lower surface 12B (second surface) facing the upper surface 12A of the wooden beam 12, i.e., the surface opposite to the upper surface 12A. In this embodiment, the upper surface groove 14 and the lower surface groove 16 have a rectangular cross section, and the depth of the lower surface groove 16 is greater than the depth of the upper surface groove 14.

[0017] An upper steel plate 18 and a lower steel plate 20, which are examples of reinforcing members, are inserted into the upper groove 14 and the lower groove 16 of the wooden beam 12, respectively. The upper steel plate 18 has a rectangular cross section, extends rod-like along the upper groove 14, and is slightly smaller in size than the upper groove 14. Similarly, the lower steel plate 20 has a rectangular cross section, extends rod-like along the lower groove 16, and is slightly smaller in size than the lower groove 16. The upper steel plate 18 and the lower steel plate 20 do not cover the upper surface groove 14 and the lower surface groove 16, but are inserted into the upper surface groove 14 and the lower surface groove 16, respectively.

[0018] In this embodiment, the width of the lower steel plate 20 is approximately the same as the width of the upper steel plate 18, and the height L2 of the lower steel plate 20 is greater than the height L1 of the upper steel plate. Furthermore, when the upper steel plate 18 and the lower steel plate 20 are inserted into the upper groove 14 and the lower groove 16, respectively, the upper surface of the upper steel plate 18 and the lower surface of the lower steel plate 20 are exposed on the upper surface 12A and the lower surface 12B of the wooden beam 12, respectively.

[0019] Additionally, adhesive 22 is filled between the upper steel plate 18 and the upper surface groove 14, and between the lower steel plate 20 and the lower surface groove 16. The adhesive 22 is made of, for example, epoxy resin or urethane resin, and integrates the upper steel plate 18 and the wooden beam 12, and the lower steel plate 20 and the wooden beam 12, respectively.

[0020] It is preferable that the adhesive 22 is fire-resistant. By using a fire-resistant material as the adhesive 22, the fire resistance of the outer peripheral surface (upper surface 12A and lower surface 12B) of the wooden beam 12 can be improved.

[0021] In the embodiment shown in Fig. 1, the upper steel plate 18 (upper surface groove 14) and the lower steel plate 20 (lower surface groove 16) are provided over the entire length in the axial direction of the wooden beam 12. However, the upper steel plate 18 (upper surface groove 14) and the lower steel plate 20 (lower surface groove 16) do not necessarily have to be provided over the entire length in the axial direction of the wooden beam 12, but may be provided appropriately in locations where reinforcement is required.

[0022] For example, when reinforcing a wooden beam 12 against long-term bending loads, it is preferable to provide an upper surface groove 14 and an upper steel plate 18 at both axial ends of the wooden beam 12, i.e., at the joint with a column 24, and a lower surface groove 16 and a lower steel plate 20 at the axial center of the wooden beam 12, as shown in Figure 2. This allows the upper steel plate 18 and lower steel plate 20 to effectively reinforce both axial ends of the upper surface 12A of the wooden beam 12, where long-term bending loads are concentrated, and the axial center of the lower surface 12B of the wooden beam 12, where long-term bending loads are concentrated. Note that the reinforcement structure 10 for wooden members shown in Figure 2 is a reference form.

[0023] On the other hand, when reinforcing the wooden beam 12 against loads during an earthquake, it is preferable to provide an upper surface groove 14 and an upper steel plate 18, and a lower surface groove 16 and a lower steel plate 20, at both ends of the wooden beam 12 in the axial direction, as shown in Figure 3. This allows the upper steel plate 18 and the lower steel plate 20 to effectively reinforce the joint between the wooden beam 12 and the column 24, where loads are concentrated during an earthquake.

[0024] Furthermore, by providing upper steel plates 18 and lower steel plates 20 at both the reinforcement points shown in Figure 2 and the reinforcement points shown in Figure 3, it is also possible to reinforce the wooden beam 12 against both long-term bending loads and loads during earthquakes.

[0025] (Reinforcement method) Next, a procedure for reinforcing the upper surface 12A and the lower surface 12B of the wooden beam 12 with the upper steel plate 18 and the lower steel plate 20 will be described.

[0026] First, a wooden beam 12 made of laminated wood is fabricated by stacking and gluing together multiple laminae (not shown). Next, the wooden beam 12 is cut using a cutting tool (not shown) or the like to form upper surface grooves 14 and lower surface grooves 16 extending along the material axis direction on the upper surface 12A and lower surface 12B of the wooden beam 12, respectively.

[0027] Thereafter, adhesive 22 is filled into the upper groove 14 and the lower groove 16, and the upper steel plate 18 is inserted into the upper groove 14, and the lower steel plate 20 is inserted into the lower groove 16. The adhesive 22 is then cured, thereby integrating the upper steel plate 18 and the lower steel plate 20 with the wooden beam 12.

[0028] By following the above procedure, the upper surface 12A and the lower surface 12B of the wooden beam 12 can be reinforced by the upper steel plate 18 and the lower steel plate 20. Note that the above procedure is an example, and the procedure may be different or other steps may be included.

[0029] For example, in the above procedure, after laminar materials are stacked to produce a wooden beam 12 with a rectangular cross section, the wooden beam 12 is cut to form the upper surface grooves 14 and the lower surface grooves 16 on the upper surface 12A and the lower surface 12B of the wooden beam 12. However, it is also possible to form the wooden beam 12 while forming the upper surface grooves 14 and the lower surface grooves 16 by stacking the laminar materials with gaps (grooves) between adjacent laminar materials.

[0030] (Action and effect) According to this embodiment, the upper steel plate 18 and the lower steel plate 20 provided on the upper surface 12A and the lower surface 12B of the wooden beam 12 are respectively integrated with the wooden beam 12. This allows the upper steel plate 18 and the lower steel plate 20 to efficiently reinforce the upper surface 12A and the lower surface 12B of the wooden beam 12, where the tensile or compressive force generated in the wooden beam 12 due to bending of the wooden beam 12 is greatest.

[0031] In particular, according to this embodiment, an upper surface groove 14 and a lower surface groove 16 extending along the material axis direction of the wooden beam 12 are formed on the upper surface 12A and the lower surface 12B of the wooden beam 12, respectively, and an upper steel plate 18 is inserted into the upper surface groove 14, and a lower steel plate 20 is inserted into the lower surface groove 16.

[0032] In this way, by inserting the upper steel plate 18 and the lower steel plate 20 into the upper surface groove 14 and the lower surface groove 16, respectively, the upper steel plate 18 and the lower steel plate 20 can be easily positioned in a state where they are exposed on the upper surface 12A and the lower surface 12B of the wooden beam 12. This allows the upper steel plate 18 and the lower steel plate 20 to be reliably positioned on the outer peripheral surface (upper surface 12A and lower surface 12B) of the wooden beam 12, and the wooden beam 12 can be reinforced efficiently.

[0033] Furthermore, according to this embodiment, adhesive 22 is filled between the upper surface groove 14 and the upper steel plate 18, and between the lower surface groove 16 and the lower steel plate 20, respectively, so that the upper steel plate 18 and the lower steel plate 20 can be easily and reliably integrated with the wooden beam 12. Furthermore, by integrating the upper steel plate 18 and the lower steel plate 20 with the wooden beam 12 using adhesive 22, the shear force generated in the wooden beam 12 can be borne by the upper steel plate 18 and the lower steel plate 20.

[0034] Furthermore, according to this embodiment, steel plates (upper steel plate 18 and lower steel plate 20) are used as reinforcing members. This makes the reinforcing members easy to handle, and by inserting the upper steel plate 18 and lower steel plate 20 into the upper surface groove 14 and lower surface groove 16, the upper surface 12A and lower surface 12B of the wooden beam 12 can be reinforced easily and reliably.

[0035] Generally, wooden beams 12 are weaker against tension than compression, and compression acts mainly on the upper surface 12A of the wooden beam 12, while tension acts mainly on the lower surface 12B of the wooden beam 12. According to this embodiment, the height L2 of the lower steel plate 20 provided on the lower surface 12B of the wooden beam 12, on which tension acts, is made higher than the height L1 of the upper steel plate 18 provided on the upper surface 12A of the wooden beam 12, on which compression acts.

[0036] As a result, the second moment of area of ​​the lower steel plate 20 can be made larger than the second moment of area of ​​the upper steel plate 18, and the lower surface 12B of the wooden beam 12, which requires more reinforcement, can be efficiently reinforced by the lower steel plate 20.

[0037] Second Embodiment Next, a reinforcement structure and a reinforcement method for a wooden member according to a second embodiment of the present invention will be described with reference to Fig. 4. Note that a description of the same components as those in the first embodiment will be omitted.

[0038] (reinforced structure) As shown in Fig. 4, the reinforcement structure 30 for wooden members of this embodiment has a wooden beam 32 as an example of a wooden member. Like the wooden beam 12 of the first embodiment, the wooden beam 32 has, for example, a rectangular cross section and is made of laminated wood in which multiple lamina materials (not shown) are stacked and glued together.

[0039] In addition, an upper surface groove 34 and a lower surface groove 36 extending along the material axis direction of the wooden beam 32 are formed on the upper surface 32A and the lower surface 32B of the wooden beam 32, respectively, and an upper steel plate 38 and a lower steel plate 40 as examples of reinforcing members are inserted into the upper surface groove 34 and the lower surface groove 36, respectively.

[0040] Here, in the first embodiment, the size of the upper steel plate 18 was slightly smaller than the size of the upper surface groove 14, whereas in this embodiment, the height of the upper steel plate 38 is made greater than the height (depth) of the upper surface groove 34.

[0041] Specifically, the lower end of the upper steel plate 38 is inserted into the upper surface groove 34 and is integrated with the wooden beam 32 by adhesive 42 filled in the upper surface groove 34. Meanwhile, the upper end of the upper steel plate 38 protrudes vertically upward from the upper surface 32A of the wooden beam 32, and a plurality of studs 44 extending horizontally are provided on both side surfaces of the upper end.

[0042] In addition, in this embodiment, a concrete slab 46 is placed on the upper surface 32A of the wooden beam 32, and the upper end of the upper steel plate 38 protruding from the upper surface 32A of the wooden beam 32 and a plurality of studs 44 protruding from the upper end are each embedded in the concrete slab 46.

[0043] As in the first embodiment, the lower steel plate 40 is slightly smaller in size than the lower groove 36, and is integrated with the wooden beam 32 by adhesive 42 filled in the lower groove 36.

[0044] (Reinforcement method) When reinforcing the upper surface 32A and the lower surface 32B of the wooden beam 32 with the upper steel plate 38 and the lower steel plate 40, first, as in the first embodiment, a plurality of laminae (not shown) are stacked and bonded together to form a laminated wooden beam 32. In addition, a plurality of studs 44 are welded to the upper end of the upper steel plate 38 in advance.

[0045] Then, the wooden beam 32 is cut using a cutting tool or the like (not shown) to form an upper surface groove 34 and a lower surface groove 36 on the upper surface 32A and lower surface 32B of the wooden beam 32, respectively. Next, the lower end of the upper steel plate 38 is inserted into the upper surface groove 34 and integrated with the wooden beam 32 by adhesive 42. Similarly, the lower steel plate 40 is inserted into the lower surface groove 36 and integrated with the wooden beam 32 by adhesive 42.

[0046] Then, a formwork (not shown) is placed above the upper surface 32A of the wooden beam 32, and concrete is poured into the formwork to construct a concrete slab 46 in which the upper end of the upper steel plate 38 and multiple studs 44 protruding from the upper end are embedded.

[0047] By following the above procedure, the upper surface 32A and the lower surface 32B of the wooden beam 32 can be reinforced by the upper steel plate 38 and the lower steel plate 40. Note that the above procedure is an example, and the procedure may be different or other steps may be included.

[0048] (Action and effect) In this embodiment, as in the first embodiment, an upper steel plate 38 and a lower steel plate 40 are inserted into upper surface grooves 34 and lower surface grooves 36 provided on the upper surface 32A and lower surface 32B of the wooden beam 32, and the upper steel plate 38 and the lower steel plate 40 are integrated with the wooden beam 32 by adhesive 42. This allows the upper surface 32A and the lower surface 32B of the wooden beam 32, where the tensile or compressive force generated in the wooden beam 32 due to bending of the wooden beam 32, to be efficiently reinforced by the upper steel plate 38 and the lower steel plate 40.

[0049] Furthermore, according to this embodiment, the upper end of the upper steel plate 38 protrudes from the upper surface 32A of the wooden beam 32, and therefore the upper end of the upper steel plate 38 can be embedded in the concrete slab 46 to enhance the unity between the wooden beam 32 and the concrete slab 46. Furthermore, a plurality of studs 44 protrude from the upper end of the upper steel plate 38 embedded in the concrete slab 46, and these studs 44 further enhance the unity between the wooden beam 32 and the concrete slab 46.

[0050] <Other embodiments> Although the first and second embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various other embodiments are possible within the scope of the present invention. Furthermore, the configurations of the first and second embodiments can be combined as appropriate.

[0051] For example, in the first embodiment, the upper steel plate 18 and the wooden beam 12 are integrated with adhesive 22. However, as shown in Fig. 5(A) as a first modified example, the upper steel plate 18 and the wooden beam 12 may be integrated with mortar 48. In this case, it is preferable to form convex cotters 50, 52 on the surface of the upper steel plate 18 and the inner wall surface of the upper surface groove 14, respectively.

[0052] According to the first modified example, mortar 48 is filled between the surface of the upper steel plate 18 on which the cotters 50 are formed and the inner wall surface of the upper surface groove 14 on which the cotters 52 are formed. This makes it possible to increase the adhesive strength of the mortar 48 by the cotters 50, 52, and to increase the pull-out resistance of the upper surface groove 14 of the upper steel plate 18. Although not shown in the figures, the cotters 50, 52 can also be applied to the lower steel plate 20 and the lower surface groove 16, just like the upper steel plate 18 and the upper surface groove 14.

[0053] Furthermore, in the first embodiment, the upper surface groove 14 and the upper steel plate 18 have a rectangular cross section, but the shapes of the upper surface groove 14 and the upper steel plate 18 are not limited to the embodiment, and may have a T-shaped cross section, for example, as in the upper surface groove 54 and upper steel plate 58 shown as a second modified example in Figure 5 (B).

[0054] By inserting the upper steel plate 58, which also has a T-shaped cross section, into the upper groove 54, which has a T-shaped cross section, the joining area between the inner wall surface of the upper groove 54 and the surface of the upper steel plate 58 can be increased, further improving the integration of the upper steel plate 58 and the wooden beam 12. Note that the shapes of the lower groove 56 and the lower steel plate 60 can also be T-shaped in cross section, similar to the upper groove 54 and upper steel plate 58.

[0055] Furthermore, in the first embodiment, as shown as a third modified example in Figures 6(A) and 6(B), a configuration may be adopted in which a plurality of communication holes 62 are formed in the upper steel plate 18. As shown in Figure 6(A), the plurality of communication holes 62 are provided at intervals along the extension direction of the upper steel plate 18, and each penetrates the upper steel plate 18 in the width direction.

[0056] As in the third modified example, by forming multiple communicating holes 62 in the upper steel plate 18, when adhesive 22 is filled between the upper surface groove 14 and the upper steel plate 18, the adhesive 22 enters each of the communicating holes 62 in the upper steel plate 18, as shown in Figure 6 (B).

[0057] This increases the adhesive strength between the upper steel plate 18 and the wooden beam 12, and improves the efficiency of stress transmission via the adhesive 22 between the upper steel plate 18 and the wooden beam 12. Although not shown, the lower steel plate 20 shown in Figure 1 can also have the communication holes 62, similar to the upper steel plate 18.

[0058] Furthermore, in the first embodiment, the upper surface groove 14 and the lower surface groove 16 for inserting the upper steel plate 18 and the lower steel plate 20 were formed on the upper surface 12A and the lower surface 12B of the wooden beam 12, respectively. However, grooves do not have to be formed on the wooden beam 12. For example, as shown as a fourth modified example in Fig. 7(A), it is also possible to configure the upper steel plate 78 and the lower steel plate 80 to be directly joined with screws 74 or the like to the upper surface 72A and the lower surface 72B of a wooden beam 72 that does not have grooves. Note that the fourth modified example shown in Fig. 7(A) is a reference example.

[0059] Furthermore, in the first embodiment, the height L2 of the lower steel plate 20 is made greater than the height L1 of the upper steel plate 18, thereby making the geometric moment of inertia of the lower steel plate 20 greater than the geometric moment of inertia of the upper steel plate 18. However, for example, as shown in Fig. 7(B) as a fifth modified example, a configuration may be adopted in which the width H2 of the lower steel plate 90 is made greater than the width H1 of the upper steel plate 88, thereby making the geometric moment of inertia of the lower steel plate 90 greater than the geometric moment of inertia of the upper steel plate 88.

[0060] In the first embodiment, the height (width) of the lower steel plate 20 does not necessarily have to be greater than the height (width) of the upper steel plate 18. Therefore, the height (width) of the lower steel plate 20 and the height (width) of the upper steel plate 18 may be the same size, and for example, if it is desired to reinforce the upper surface 12A of the wooden beam 12 more than the lower surface 12B, the height (width) of the upper steel plate 18 may be greater than the height (width) of the lower steel plate 20.

[0061] In the first and second embodiments, the upper steel plates 18, 38 and the lower steel plates 20, 40 are integrated with the wooden beams 12, 32 by the adhesives 22, 42 filled in the upper surface grooves 14, 34 and the lower surface grooves 16, 36. However, instead of or in addition to the adhesives 22, 42, the upper steel plates 18, 38 and the lower steel plates 20, 40 may be integrated with the wooden beams 12, 32 by the drift pins 100.

[0062] 7(B), for example, pin holes 92 and 94 are formed in the upper steel plate 88 and the lower steel plate 90, respectively, which penetrate the upper steel plate 88 and the lower steel plate 90 in the width direction. Also, pin holes 96 and 98 are formed in the wooden beam 12, respectively, which penetrate the wooden beam 12 in the width direction via the upper surface groove 14 and the lower surface groove 16. Note that the pin holes 92, 94, 96, and 98 are formed at intervals along the material axis direction (extension direction) of the upper steel plate 88, the lower steel plate 90, and the wooden beam 12.

[0063] By inserting and fixing drift pins 100 into the pin holes 92 of the upper steel plate 88 and the pin holes 96 of the wooden beam 12, and into the pin holes 94 of the lower steel plate 90 and the pin holes 98 of the wooden beam 12, the drift pins 100 can be used to integrate the upper steel plate 88, the lower steel plate 90 and the wooden beam 12.

[0064] Furthermore, the upper steel plates 18, 38 and the lower steel plates 20, 40 are press-fitted into the upper grooves 14, 34 and the lower grooves 16, 36 without using fillers such as adhesives 22, 42. , 38 and the lower steel plates 20, 40 may be integrated with the wooden beams 12, 32.

[0065] In the first and second embodiments, the wooden beams 12, 32 are made of laminated wood. However, the wooden beams are not limited to laminated wood, and may be made of CLT (Cross Laminated Timber), which is made by laminating and bonding multiple laminae with their fiber directions perpendicular to each other, LVL (Laminated Veneer Lumber), which is made by laminating and bonding laminae with their fiber directions aligned, or a single layer of solid wood.

[0066] In the first and second embodiments, the reinforcing members are made of steel plates (upper steel plates 18, 38 and lower steel plates 20, 40), but the reinforcing members are not limited to steel plates and may be made of reinforcing bars, etc. Furthermore, the reinforcing members may be made of a material that is more rigid than the wooden members, such as carbon fiber, aramid fiber, or plastic.

[0067] Furthermore, the upper reinforcing members inserted into the upper surface grooves 14, 34 and the lower reinforcing members inserted into the lower surface grooves 16, 36 may be made of different materials. For example, by using a material that is harder than the material that is used to make the upper reinforcing members, the second moment of area of ​​the lower reinforcing members can be made larger than the second moment of area of ​​the upper reinforcing members.

[0068] In the first and second embodiments, the upper steel plates 18, 38 and the lower steel plates 20, 40 were provided as reinforcing members on both the upper surfaces 12A, 32A and the lower surfaces 12B, 32B of the wooden beams 12, 32. However, the reinforcing members do not necessarily have to be provided on both surfaces of the wooden beams 12, 32, and may be provided on only one of the surfaces.

[0069] In the second embodiment, multiple studs 44 protrude from the upper end of the upper steel plate 38, but the unity of the wooden beam 32 and the concrete slab 46 may be enhanced by, for example, having reinforcing bars (not shown) arranged in the concrete slab 46 penetrate the upper steel plate 38. Furthermore, the studs 44 do not need to protrude from both sides of the upper end of the upper steel plate 38, and may protrude from only one side of the upper steel plate 38.

[0070] In the first and second embodiments, the wooden members are wooden beams 12 and 32, but the present invention can be applied to various wooden members other than wooden beams, such as wooden slabs and wooden columns. Furthermore, the present invention can be applied to wooden members (wooden beams) that make up a building when it is newly constructed, and can also be applied to wooden members (wooden beams) that make up a building when it is renovated.

[0071] (((1))) The reinforcing structure for a wooden member described in (((1))) comprises a wooden member and a reinforcing member provided on at least one of a first surface of the wooden member and a second surface opposite to the first surface, and integrated into the wooden member.

[0072] According to the above configuration, by integrating the reinforcing member provided on at least one of the first and second surfaces of the wooden member with the wooden member, the reinforcing member can be easily arranged on the outer peripheral surface (the first or second surface) of the wooden member. This allows the reinforcing member to efficiently reinforce the outer peripheral surface of the wooden member, where the tensile or compressive force generated in the wooden member due to bending is greatest.

[0073] (((2))) The reinforcement structure for a wooden member described in (((2))) is the reinforcement structure for a wooden member described in (((1))), wherein at least one of the first surface and the second surface of the wooden member is provided with the A groove is formed in the wood member so as to extend along the axial direction of the wood member, and the reinforcing member is inserted into the groove.

[0074] According to the above configuration, a groove extending along the material axis direction of the wooden member is formed on at least one of the first and second faces of the wooden member, and a reinforcing member is inserted into this groove, thereby making it possible to easily and reliably integrate the reinforcing member with the wooden member.

[0075] (((3))) The reinforced structure for wooden members described in (((3))) is the reinforced structure for wooden members described in (((1))) or (((2))), in which the reinforcement members are steel plates.

[0076] According to the above configuration, by inserting a steel plate as a reinforcing member into the groove, the outer peripheral surface of the wooden member can be easily and reliably reinforced by the steel plate.

[0077] (((4)))) The method for reinforcing a wooden member described in (((4)))) involves forming a groove extending along the axial direction of the wooden member on at least one of a first surface of the wooden member and a second surface opposite the first surface, and inserting a reinforcing member into the groove to integrate it with the wooden member.

[0078] According to the above configuration, a groove extending along the axial direction of the wooden member is formed on at least one of the first and second faces of the wooden member, and a reinforcing member is inserted into the groove and integrated with the wooden member, thereby enabling the reinforcing member to be easily and reliably positioned on the outer peripheral surface (first or second surface) of the wooden member. This allows the reinforcing member to efficiently reinforce the outer peripheral surface of the wooden member, where the tensile or compressive force generated in the wooden member due to bending is greatest. [Explanation of symbols]

[0079] 10, 30 Reinforcement structure 12, 32, 72 Wooden beams (examples of wooden components) 12A, 32A, 72A top surface (example of the first surface) 12B, 32B, 72B bottom surface (an example of the second surface) 14, 34, 54 Top groove (example of groove) 16, 36, 56 Underside groove (example of groove) 18, 38, 58, 78, 88 Upper steel plate (an example of a reinforcing member) 20, 40, 60, 80, 90 Lower steel plate (example of reinforcing member)

Claims

1. Wooden members and a reinforcing member provided on a first surface of the wooden member and a second surface opposite to the first surface, the reinforcing member being integrated with the wooden member; The first surface is an upper surface facing upward, and the second surface is a lower surface facing downward, an upper surface groove extending along the material axis direction is formed only at both ends of the first surface, and an upper steel plate as the reinforcing member is inserted into the upper surface groove of the first surface; a lower surface groove extending along the material axis direction is formed only at both ends of the second surface, and a lower steel plate as the reinforcing member is inserted into the lower surface groove of the second surface; Reinforced structure of wooden components.

2. The cross-sectional area of ​​the lower surface groove is larger than the cross-sectional area of ​​the upper surface groove, The second moment of area of ​​the lower steel plate is made larger than the second moment of area of ​​the upper steel plate. The reinforced structure for wooden members according to claim 1.

3. The upper steel plate has a rectangular cross section, The lower steel plate has a rectangular cross section, The height of the lower steel plate is greater than the height of the upper steel plate. The reinforced structure for wooden members according to claim 1 or 2.

4. The upper steel plate has a rectangular cross section, The lower steel plate has a rectangular cross section, The width of the lower steel plate is wider than the width of the upper steel plate. The reinforced structure for wooden members according to claim 1 or 2.

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