Joint structure

Abstract

To provide a joint structure using wood materials, etc., which can suitably join column members and beam members made of wood materials.SOLUTION: A joint structure 1 joins a column member 2 made of wood material 21 to a beam member 3 made of wood material 31. The joint structure 1 includes a well-shaped steel plate 11 in which steel plates are combined into a square shape, and a core material 12 made of a wood material and placed in a rectangular tube portion at the center of the well-shaped steel plate 11. The ends of the wood materials 21 and 31 of the column member 2 and the beam member 3 are placed in a space surrounded with steel plates in a concave shape outside the rectangular tube portion, and are joined to the well-shaped steel plate 11.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a joint structure between a pillar member and a beam member. [Background technology]

[0002] Many wood materials, such as laminated lumber, have significantly different stiffness and strength in the direction perpendicular to the grain, with the stiffness being lower in the direction perpendicular to the grain than in the direction perpendicular to the grain. Therefore, when a column member and a beam member are joined using wood, simply abutting them together can cause one of the column member and the beam member to sink into the other member in the direction perpendicular to the grain, resulting in poor stress transmission.

[0003] In contrast to this, Patent Document 1 discloses that a concrete joint member is provided at the joint between a wooden column member and a beam member, and the end of the column member and the end of the beam member abut against this joint member.By using concrete as the joint member, the above-mentioned sinking does not occur. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2020-111930 Summary of the Invention [Problem to be solved by the invention]

[0005] However, if concrete joint members are installed at the joints between the column members and the beam members, the purpose of using wooden column members and beam members will be lost in terms of design, etc.

[0006] The present invention has been made in consideration of the above problems, and its object is to provide a joint structure using wooden materials that can suitably join column members and beam members made of wooden materials. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the present invention provides a joint structure for a column made of wooden material and a beam made of wooden material, which comprises a well-shaped steel plate made by combining steel plates in a well shape, and a core material made of wooden material placed in the square tube portion of the well-shaped steel plate, and is characterized in that the ends of the wooden material of the column and the beam are placed in the space outside the square tube portion surrounded by the steel plate in a concave shape and joined to the well-shaped steel plate.

[0008] In the joint structure of the present invention, wooden materials are used as the core material at the joints between the column members and the beam members, and by arranging steel plates around it, the sinking of the core material is reduced and dispersed, and stress is transmitted appropriately between the steel plates and the core material, achieving stable hysteresis characteristics regarding stress and displacement at the joints. In addition, using wooden materials at the joints is also preferable from the design perspective.

[0009] It is also preferable that a perforated steel plate is provided on the outer surface of the square tube portion, and the ends of the wooden materials of the columns and beams are joined to the well-shaped steel plate by inserting rod material through holes provided at the ends and holes in the perforated steel plate. This allows the shear force of the beam member to be transmitted to the column member via the steel cross-section plate, and also makes it possible to transmit the shear force of the column member to the beam member via the steel cross-section plate.

[0010] It is desirable that the core member be divided into a front and a rear part in the axial direction of the rectangular tube portion. This simplifies the installation of the core material in the rectangular tube portion.

[0011] It is desirable that the end of the well-shaped steel plate be joined to a steel plate provided on the side of the column member. This allows the steel plates of the pillar members to bear bending strength, etc., improving the structural performance of the pillar members and resulting in a structure with excellent toughness.

[0012] It is also desirable that the ends of the wooden materials of the column member and the beam member be joined to the steel plate by screwing bolts into the ends of the wooden materials of the column member and the beam member from the internal space of the square tube portion. In this case, stress can be transmitted between the wooden material of the pillar or beam member and the steel plate via the bolts, which are the connecting means. [Effects of the Invention]

[0013] According to the present invention, a joint structure using wooden materials can be provided that can suitably join pillar members and beam members made of wooden materials. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a diagram showing a frame including a joint structure 1. [Figure 2] 10A and 10B are diagrams illustrating a well-shaped steel plate 11. FIG. [Figure 3] A diagram showing a cross section of the pillar member 2 and a connection point C. [Figure 4] 10 is a diagram showing a cross section of the beam member 3 and a connection point C. FIG. [Figure 5] 1 is a diagram showing a method for constructing a frame including the joint structure 1. FIG. [Figure 6] FIG. [Figure 7] FIG. 3 is a diagram illustrating a core material 12a. [Figure 8] A diagram showing well-shaped steel plates 11b, 11c, and 11d. [Figure 9] FIG. 2 is a diagram showing a frame including a joint structure 1a. [Figure 10] FIG. 2 is a diagram showing the joint between the column member 2 and the beam member 3. [Figure 11] 1A and 1B are diagrams showing a method of constructing a frame including a joint structure 1a. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

[0016] [First embodiment] (1.Joint structure 1) 1 is a diagram showing a frame including a joint structure 1 according to a first embodiment of the present invention. This frame is a frame for the outer periphery of a building, and has a single-plane rigid frame structure composed of column members 2 and 4 and beam members 3. Column member 2 is disposed between the left and right column members 4. Beam member 3 is erected between column members 2 and 4.

[0017] The pillar members 2 are made of wood materials 21 such as laminated lumber and BP lumber, and are arranged so that the fiber direction (strong axis direction) is the axis direction of the member. This is because the pillar members 2 are greatly affected by axial force. BP lumber is a large-section structural wood material made by bundling structural lumber laminated with adhesive.

[0018] On the other hand, wooden materials 31 with little anisotropy, such as LVL or CLT, are used for the beam members 3. However, it is also possible to use laminated lumber or BP material. The beam members 3 are arranged above and below the column members 2.

[0019] In this embodiment, the column members 4 are through columns, and for example, steel materials such as steel pipes are used, but the present invention is not limited to this.

[0020] The joint structure 1 of this embodiment is placed at the joint between a column member 2 and a beam member 3, and joins these members. The joint structure 1 has a core member 12 made of wood placed inside a steel well plate 11. The wood material is one with little anisotropy, such as LVL or CLT, but is not limited to these.

[0021] Fig. 2(a) is a perspective view showing a well-shaped steel plate 11. The well-shaped steel plate 11 is made by combining steel plates in a well shape and can be formed by joining the steel plates together by welding or the like. A square tube portion 111 is formed in the center of the well-shaped steel plate 11, and on its four outer surfaces, perforated steel plates 112 are provided along a plane perpendicular to the axial direction of the square tube portion 111 (corresponding to the depth direction in Fig. 2(a)) as a means for joining the wooden materials 21, 31.

[0022] The core material 12 is disposed in the internal space of the square tube portion 111. As shown in FIG. 2(b), the core material 12 has a three-dimensional shape in which the internal space of the square tube portion 111 is divided in half, front and rear, in the axial direction of the square tube portion 111, and a pair of core materials 12 are inserted from the front and rear of the square tube portion 111. These core materials 12 are fixed to each other and integrated by fixing means (not shown) such as through bolts, screw nails, adhesive, etc.

[0023] The outside of the square tube portion 111 is formed with spaces 110a to 110d surrounded by steel plates in a concave shape, and ends of wooden materials 21 and 31 that form the pillar member 2 and the beam member 3 are placed in these spaces 110a to 110d.

[0024] For example, as shown in Figure 2(c), the ends of the wooden pieces 31 of the beam member 3 are placed in the space 110a on the right side of the rectangular tube portion 111. The wooden pieces 31 have a width equivalent to half the width of the beam member 3, and the ends of the pair of wooden pieces 31 are placed in the space 110a so as to sandwich the perforated steel plate 112 from the front and rear. Note that "width" refers to the length along the axial direction of the rectangular tube portion 111.

[0025] Holes 311 are provided at the ends of the wooden pieces 31, and the holes 311 of each wooden piece 31 communicate with holes in the perforated steel plate 112. By inserting drift pins DP, which are rods, into these holes, the ends of each wooden piece 31 are joined to the well-shaped steel plate 11.

[0026] Although not shown in Figure 2(c), the ends of a pair of front and rear wooden pieces 31 are similarly arranged in the space 110b on the left side of the square tube portion 111 and are joined to the square tube portion 111 by drift pins DP. The end of the wooden piece 31 on the pillar member 4 side is joined to a bracket 41 such as an H-shaped steel fixed to the pillar member 4 by using joining means (not shown) such as drift pins or bolts.

[0027] 2(c), the ends of the wooden pieces 21 of the pillar member 2 are placed in the space 110c above the square tube portion 111. The wooden pieces 21 have a width equivalent to half the width of the pillar member 2, and the ends of a pair of wooden pieces 21 are placed in the space 110c so as to sandwich the perforated steel plate 112 from the front and rear. As described above, holes 211 are formed in the ends of the wooden pieces 21, and the holes 211 of each wooden piece 21 communicate with the holes in the perforated steel plate 112. By inserting drift pins DP into these holes, the ends of each wooden piece 21 are joined to the well-shaped steel plate 11.

[0028] Although not shown in FIG. 2(c), the ends of a pair of front and rear wooden members 21 are also arranged in the space 110d below the rectangular tube portion 111 in the same manner as above, and are joined to the rectangular tube portion 111 by drift pins DP.

[0029] FIG. 3(a) is a diagram showing a cross section (hereinafter simply referred to as a cross section) of the pillar member 2 that is perpendicular to the member axial direction.

[0030] As described above, the pillar member 2 is formed by stacking the wooden materials 21 front to back (corresponding to the up and down direction in FIG. 3(a)), but in this embodiment, steel plates 22 are provided on the left and right sides thereof.

[0031] 1, the steel plate 22 is arranged to extend vertically along the column member 2, and the upper and lower ends of the steel plate 22 are connected to the lower end of the well-shaped steel plate 11 located above the column member 2 and the upper end of the well-shaped steel plate 11 located below the column member 2. The symbol C in FIG. 1 indicates this connection point.

[0032] The steel plates 22 are provided to improve the structural performance of the pillar members 2, and provide toughness to the pillar members 2 by bearing the bending strength and the like of the pillar members 2. As shown in FIG. 3(a), a covering material 23 made of wood is provided on the outside of each steel plate 22, and is fixed to the wood material 21 using a bolt B such as a lag screw. The bolt B is screwed in from the covering material 23 side, and its shaft passes through a hole in the steel plate 22 and reaches the wood material 21.

[0033] The head of bolt B is placed in a recess 231 formed by seating or the like in the covering material 23. The recess 231 is closed with a hole filling material 232 such as a wooden plug, improving the design and preventing bolt B from becoming a thermal bridge.

[0034] The covering material 23 is made of, for example, chemically impregnated laminated wood, and serves to provide fire resistance and improve the design of the column member 2. Furthermore, the covering material 23 also serves as a stiffening material that restrains the steel plate 22 and prevents the steel plate 22 from protruding, thereby maintaining the structural performance of the column member 2. The covering material 23 on the outside of the steel plate 22 is made thick enough to function as a stiffening material.

[0035] Similar covering materials 23 are also provided on the front and rear surfaces of the column member 2, providing fire resistance and improving the design of the column member 2. These covering materials 23 are fixed to the wooden material 21 using adhesive or the like. Note that the covering materials 23 on the front and rear of the column member 2 do not function as stiffening materials, so their thickness can be kept small.

[0036] 3(b) is a diagram showing a connection point C between the end of the steel plate 22 and the end of the shaped steel plate 11. In this embodiment, the end of the steel plate 22 and the end of the shaped steel plate 11 are butted together, and splice plates P are placed on both the left and right sides of these end portions so as to straddle the space between the end of the steel plate 22 and the end of the shaped steel plate 11. The left and right splice plates P are fastened together with fasteners F consisting of high-strength bolts and nuts, sandwiching these end portions, thereby connecting the end of the steel plate 22 and the end of the shaped steel plate 11.

[0037] In this embodiment, recesses 212, 233 are formed in the wood material 21 and the covering material 23 at the connection point C, and the splice plate P and fastener F are housed in the space formed by the recesses 212, 233.

[0038] Fig. 4(a) is a diagram showing a cross section of the beam member 3. As described above, the beam member 3 is also formed by stacking wooden materials 31 front to back (corresponding to the left and right direction in Fig. 4(a)), and steel plates 32 are provided above and below the wooden materials 31.

[0039] A covering material 33 made of chemically impregnated laminated timber or the like is placed under the lower steel plate 32, and this covering material 33 serves the same functions as described above, such as fire resistance, improving design, and stiffening. The covering material 33 is fixed to the wooden material 31 using bolts B such as lag screws. The bolts B are screwed in from the covering material 33 side, and their shanks penetrate holes in the steel plate 32 to reach the wooden material 31. The heads of the bolts B are placed in recesses 331 formed by seat boring or the like in the covering material 33, and the recesses 331 are closed with hole-filling material 332 such as wooden plugs.

[0040] Similar covering materials 33 are also provided on the front and rear surfaces of the beam member 3, providing fire resistance and improving the design of the beam member 3. These covering materials 33 are fixed to the wooden material 31 using adhesive or the like. As mentioned above, the covering materials 33 on the front and rear of the beam member 3 do not function as stiffening materials.

[0041] A slab 5 is formed by pouring concrete above the upper steel plate 32. In this embodiment, the shank of bolt B is screwed in so that it penetrates the upper steel plate 32 and reaches the top of the wooden material 31, but the top of bolt B is embedded in the concrete of the slab 5 and functions as a shear key to prevent the slab 5 from shifting.

[0042] As shown in FIG. 1, the end of the steel plate 32 on the side of the sectional steel plate 11 is connected to the end of the sectional steel plate 11. FIG. 4(b) shows this connection point C for the steel plate 32 at the bottom of the beam member 3. As with the above, at this connection point C, the end of the steel plate 32 and the end of the sectional steel plate 11 are butted together, and splice plates P are placed on both the top and bottom of these ends so as to straddle the space between the end of the steel plate 32 and the end of the sectional steel plate 11. The upper and lower splice plates P are fastened together with fasteners F consisting of high-strength bolts and nuts, sandwiching these ends, thereby connecting the end of the steel plate 32 to the end of the sectional steel plate 11.

[0043] At this connecting point C, recesses 312 and 333 are formed in the wood material 31 and the covering material 33, and the splice plate P and fastener F are housed in the space formed by these recesses 312 and 333.

[0044] FIG. 4(b) shows the connection point C of the lower steel plate 22 of the beam member 3, but the connection point C of the upper steel plate 32 basically has the same configuration. However, the above-mentioned recess is not provided in the slab 5. The ends of the upper and lower steel plates 32 on the column member 4 side can be connected to the flanges of the bracket 41 of the column member 4. The connection method is not particularly limited, but for example, the same configuration as the connection point C of the ends of the upper and lower steel plates 32 on the well-shaped steel plate 11 side can be used.

[0045] (2. Construction method of the frame) Fig. 5 is a diagram showing a method for constructing a frame including a joint structure 1. In this embodiment, as shown in Fig. 5(a), the lower layer steel plate 11 and core member 12 are arranged, and the lower layer beam member 3 and slab 5 are constructed. Then, as shown in Fig. 5(b), the left and right steel plates 22 of the column member 2 are connected to the upper end of the lower layer steel plate 11 and erected. Furthermore, the lower end of the upper layer steel plate 11 is connected to the upper end of these steel plates 22.

[0046] Thereafter, as shown in Figure 5(c), the upper and lower steel plates 32 of the upper beam member 3 are connected to the left and right ends of the steel pit plate 11 and the brackets 41 of the column member 4. In addition, a pair of wooden pieces 21 that make up the column member 2 are inserted from the front and back between the steel plates 22 of the column member 2, and the upper and lower ends of the wooden pieces 21 are joined to the upper and lower steel pit plates 11, respectively, and a pair of front and rear core pieces 12 are arranged in the square tube portion 111 (see Figure 2(a)) of the steel pit plate 11 of the upper layer as described above.

[0047] Next, as shown in Figure 5(d), a pair of wooden pieces 31 that make up the beam member 3 are inserted from the front and back between the steel plates 32 of the upper beam member 3, and the left and right ends of the wooden pieces 31 are joined to the steel plate 11 and the bracket 41, respectively. Also, the covering material 23 of the column member 2 is installed as described above.

[0048] Thereafter, covering materials 33 for the upper-layer beam members 3 are installed, and concrete is poured onto the upper-layer beam members 3 to construct a slab 5, thereby constructing the frame shown in FIG.

[0049] As described above, in the joint structure 1 of this embodiment, wood material is used as the core material 12 at the joint between the column member 2 and the beam member 3, and a steel slab 11 is arranged around it, thereby reducing and dispersing the sinking of the core material 12, and stress is transmitted effectively between the steel slab 11 and the core material 12, and the core material 12 deforms into a parallelogram shape, thereby achieving stable hysteresis characteristics regarding stress and displacement at the joint.

[0050] Furthermore, the square tube portion 111 of the well-shaped steel plate 11 is in surface contact with the column member 2, beam member 3, and core member 12 and is constrained by these members, thereby suppressing buckling of the square tube portion 111 and effectively utilizing the compressive strength of the steel plate. Furthermore, the wood used for the column member 2, beam member 3, and core member 12 is an environmentally friendly material that emits less CO2 during production than concrete or steel. This invention maximizes the performance of steel while creating a highly aesthetically pleasing frame that displays exposed wood, thereby achieving a joint structure 1 that exhibits stable rigidity and strength by bearing moments applied to the frame. Furthermore, using a dry construction method with wood facilitates the construction of the frame.

[0051] In this embodiment, the shear force of the beam member 3 can be transmitted to the column member 2 via the perforated steel plate 112 of the well steel plate 11, and the shear force of the column member 2 can also be transmitted to the beam member 3.

[0052] Furthermore, in this embodiment, by arranging a pair of front and rear core materials 12 in the square tube portion 111 of the well-shaped steel plate 11 and integrating them, it is possible to simply push the core material 12 into the square tube portion 111 from the front and rear, making it possible to install the core material 12 rationally through simple work. It is also possible to make the core material 12 a single component that is not divided into front and rear and has dimensions equivalent to the internal space of the square tube portion 111, but this would increase the thickness of the core material 12, making it more difficult to obtain, and the work of inserting it into the square tube portion 111 would also be somewhat difficult.

[0053] In addition, in this embodiment, the end of the well-shaped steel plate 11 is joined to the steel plate 22 provided on the side of the pillar member 2, so that the steel plate 22 of the pillar member 2 can bear bending strength, etc., thereby improving the structural performance of the pillar member 2 and resulting in a structure with excellent toughness.

[0054] However, the present invention is not limited to the above embodiment. For example, the joint structure 1 of this embodiment is intended to be applied to a single-plane rigid frame structure shown in Fig. 1 on the periphery of a building from the viewpoints of realizing a joint structure 1 that takes moment loads into account, simplifying the joint structure 1, and providing a structure that is conscious of design, but it may also be applied to a joint between the plane shown in Fig. 1 and a two-way rigid frame structure within a plane perpendicular to the plane inside the building.

[0055] In this case, the beam member 3 is further arranged to extend in the normal direction to the plane of the paper in Fig. 1, and the cross-section steel plate can be a combination of the cross-section steel plate 11 in Fig. 2(a) and a cross-section steel plate 11 obtained by rotating the cross-section steel plate 11 by 90° in a plane. However, this has the disadvantage of making the configuration complicated.

[0056] Alternatively, even when used inside a building, only the structural surface shown in Fig. 1 may be a rigid frame structure, and the beam members 3 extending in the normal direction to the paper surface of Fig. 1 may be pin-connected to the steel bayonet plate 11a shown in Fig. 6. In addition to the steel bayonet plate 11, this steel bayonet plate 11a has a configuration in which a steel plate 113 that divides the internal space of the square tube portion 111 into left and right halves is arranged along the axial direction of the square tube portion 111, and this steel plate 113 can be used to pin-connect the wooden material 31 of the beam member 3. In this case, the configuration can be relatively simple.

[0057] As shown in FIG. 7(a), the core member 12a has tapered surfaces 121 on its side, narrowing toward the steel plate 11, facilitating insertion of the core member 12a into the rectangular tube portion 111. Furthermore, as shown in FIG. 7(b), a horizontal cross section of the rectangular tube portion 111, the tapered surfaces 121 are compressed when the core member 12a is inserted into the rectangular tube portion 111. This absorbs any installation errors of the core member 12a relative to the rectangular tube portion 111, enabling the core member 12a to be in surface contact with the inner surface of the rectangular tube portion 111 without any gaps. In the example shown in FIG. 7(a), two opposing side surfaces of the core member 12a have tapered surfaces 121, but all four side surfaces of the core member 12a may also have tapered surfaces 121. As mentioned above, when the core member 12 is made of a single member, there is a drawback in that it is difficult to absorb installation errors using the tapered surfaces 121 (large gaps are likely to form at the narrowing end of the taper).

[0058] In this embodiment, the covering materials 23, 33 are impregnated with a chemical agent to act as fire-resistant coverings, but in some cases, fire resistance is not required for the covering materials 23, 33, and in such cases, wood material that is not impregnated with a chemical agent can be used. Also, it is possible to omit the covering materials 23, 33 except for the outer surfaces of the steel plates 22, 32.

[0059] It is also possible to reinforce the rectangular tube portion 111 by placing a reinforcing plate. For example, as shown in the cross-section steel plate 11b of FIG. 8(a), a reinforcing plate 114 can be placed inside the rectangular tube portion 111 along one diagonal of the cross section of the rectangular tube portion 111. Alternatively, as shown in the cross-section steel plate 11c of FIG. 8(b), reinforcing plates 114 can be placed along both diagonals in an X-shape. Furthermore, as shown in the cross-section steel plate 11d of FIG. 8(c), reinforcing plates 114 that divide the interior space of the rectangular tube portion 111 into front and rear sections can be placed along a plane perpendicular to the axial direction of the rectangular tube portion 111. These reinforcing plates 114 improve rigidity, allowing anisotropic wood materials to be used as the core material 12. The reinforcing plate 114 may be, for example, a steel plate, but is not limited to this.

[0060] [Second embodiment] 9 is a diagram showing a frame including a joint structure 1a according to a second embodiment of the present invention. The joint structure 1a of this embodiment differs from the first embodiment in that the steel plates 22, 32 of the column member 2 and the beam member 3 are omitted, and instead the ends of the wooden materials 21, 31 of the column member 2 and the beam member 3 are joined to a well-shaped steel plate 11 with bolts B or screws.

[0061] As shown in Figure 10(a), the bolt B is screwed into the internal space of the square tube portion 111 of the well-shaped steel plate 11, and the shaft of the bolt B is threaded into the female screws 213, 313 (see Figure 9) previously embedded in the end faces of the wooden materials 21, 31. Since the head of the bolt B protrudes into the internal space of the square tube portion 111, a groove 122 for accommodating the head of the bolt B is formed in the core material 12b at the position where the head of the bolt B will come into contact, as shown in Figure 10(b).

[0062] 10(a), the ends of the wooden pieces 21 and 31 arranged in the space surrounded by the steel plates on the outside of the square tube portion 111 in a concave shape are joined to each of a pair of steel plates arranged so as to sandwich the ends with screws S such as Paneread (registered trademark). The screws S are screwed in from the steel plate side.

[0063] Fig. 11 is a diagram showing a method for constructing a frame including a joint structure 1a. In this embodiment, as shown in Fig. 11(a), a lower-layer steel plate 11 is placed, and a lower-layer beam member 3 and a slab 5 are constructed. Then, as shown in Fig. 11(b), an upper-layer steel plate 11 is joined to a wooden material 21 of a column member 2 with a bolt B or the like, and the resulting structure is placed on the lower-layer steel plate 11. Then, the lower end of the wooden material 21 is joined to the lower-layer steel plate 11 with a bolt B or the like. Female screws 213 for threading the shanks of bolts B are embedded in the upper and lower ends of the wooden material 21 in advance.

[0064] 11(c), the covering material 23 is placed around the wooden material 21 of the pillar member 2, and the core material 12b is inserted into the internal space of the square tube portion 111 (see FIG. 10(a)) of the lower-layer well-shaped steel plate 11. The covering material 23 is placed on the four sides (front, back, left, and right) of the pillar member 4, and fixed to the wooden material 21 with adhesive or the like.

[0065] Furthermore, the wooden material 31 of the upper beam member 3 is installed, and the end of the wooden material 31 on the side of the steel plate 11 is joined to the steel plate 11 by a bolt B or the like. A female screw 313 for threading onto the shank of the bolt B is embedded in advance in the end face of the wooden material 31 on the side of the steel plate 11. The end of the wooden material 31 on the side of the column member 4 can be joined to a bracket 41 fixed to the column member 4 by using joining means (not shown) such as a drift pin or bolt.

[0066] Next, as shown in Figure 11(d), covering materials 33 are installed on the upper-layer beam members 3, and concrete is poured on top of the upper-layer beam members 3 to construct the slab 5. The covering materials 33 are installed on three sides of the beam members 3, the front, back, and bottom, and are fixed to the wooden materials 31 with adhesive or the like. By repeating the above process, the frame is constructed in order from layer to layer.

[0067] The second embodiment described above also provides the same effects as the first embodiment. Furthermore, the second embodiment has the advantage that stress is transmitted between the wooden materials 21, 31 of the column member 2 or the beam member 3 and the steel plate 11 by the bolts B or screws S, which are the joining means, and the steel plates 22, 32 are omitted, making construction easier.

[0068] While the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to these examples. It is clear that those skilled in the art can conceive of various modifications and alterations within the scope of the technical ideas disclosed in this application, and it is understood that these modifications and alterations also fall within the technical scope of the present invention. [Explanation of symbols]

[0069] 1, 1a: Joint structure 2, 4: Pillar members 3: Beam member 5: Slab 11, 11a, 11b, 11c, 11d: Well-shaped steel plate 12, 12a, 12b: Core material 21, 31: Wood material 22, 32: Steel plate 23, 33: Covering material 111: Angle tube part 112: Hole steel plate

Claims

1. A joint structure of a column member made of wood and a beam member made of wood, Well-shaped steel plates, which are steel plates combined in a well shape, A core material made of wood arranged in the square tube portion of the well-shaped steel plate; and A joint structure characterized in that the ends of the wooden materials of the column member and the beam member are placed in a space outside the square tube portion surrounded by the steel plate in a concave shape and joined to the well-shaped steel plate.

2. a perforated steel plate is provided on the outer surface of the square tube portion, A joint structure as described in claim 1, characterized in that the ends of the wooden materials of the column members and the beam members are joined to the well-shaped steel plate by inserting a rod through holes provided at the ends and holes in the perforated steel plate.

3. 2. The joining structure according to claim 1, wherein the core member is divided into a front portion and a rear portion in the axial direction of the rectangular tube portion.

4. 2. The joint structure according to claim 1, wherein the end of the well-shaped steel plate is joined to a steel plate provided on the side of the column member.

5. A joint structure as described in claim 1, characterized in that the ends of the wooden materials of the column member and the beam member are joined to the steel plate by screwing bolts into the ends of the wooden materials of the column member and the beam member from the internal space of the square tube portion.

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