JP7311389B2 - Beam material - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beam constructed by joining a plurality of long rectangular wooden boards.

As a beam used for medium- and large-scale wooden buildings, there is known a beam member called an I-shaped beam, which is formed by bonding wooden boards made of laminated lumber such as CLT with an adhesive to form an I-shaped cross section ( See Non-Patent Document 1).

KEY-TEC product information "KEYLAM MEGA BEAM", Keytec Co., Ltd. http://www.key-tec.co.jp/products/Igata.html

However, as shown in FIG. 8, the beam 100 having the above-described I-shaped cross section adheres wooden plate members 110 that serve as flanges to both plate surfaces 102 and 103 on the upper and lower end sides of a wooden plate member 101 that serves as a web. Since it is the structure fixed with the agent 111, there exists a subject that it becomes a beam material with low rigidity.
An object of the present invention is to provide a wooden beam member having an I-shaped cross section or an H-shaped cross section and having high rigidity.

The beam material according to the present invention includes one end face of a pair of end faces along the long side edges of a long rectangular first wooden board and a plate surface of a second long rectangular wooden board. are joined in contact with each other, and the other end face of the pair of end faces along the long edge of the first wooden plate and the plate surface of the long rectangular third wooden plate are in contact. It is a beam member formed to have an I-shaped cross section or an H-shaped cross section by being joined in a state where the plate surface of a metal connecting member having an L-shaped cross section is joined to the plate surface of the first wooden plate and the first wooden plate. The first wooden board and the second wooden board are joined by connecting the connecting member to the first wooden board and the second wooden board while being in contact with the board surface of the second wooden board. In addition, the connection member is connected to the first wooden plate while the plate surface of the metal connection member having an L-shaped cross section is in contact with the plate surface of the first wooden plate and the plate surface of the third wooden plate. A plurality of beams provided with end joining means at the ends of the beams constructed by joining the first wooden plate and the third wooden plate by being connected to the third wooden plate. A beam constructed by joining an end joining means of one beam and an end joining means of the other beam, wherein the end joining means of one of the beams is connected to the end of the connecting member protrude from one end surface of the wooden board in the direction along the long side edge, and the end joining means of the other beam member is configured so that the end of the connecting member is , the end face of the end of the connecting member and the other end face of the wooden board in the direction along the long side of the wooden board are positioned at a predetermined distance from one end face of the other end in the direction along the long side of the wooden board. is longer than the length of the end of the connecting member protruding from one end face of the wooden board of one beam, and the end joining means of one beam The end of the connecting member protruding from one end face of the wooden board in the is connected to the first wooden board and the second wooden board of the other beam by screws, and the first wooden board of the other beam Since the wooden board and the third wooden board are connected by screws , it is possible to provide a wooden beam having an I-shaped cross section or an H-shaped cross section and having high rigidity , thereby providing a long-span beam. Easy to manufacture .
In addition, since the connecting members are made of angle steel with a length corresponding to the length of the long edge of the wooden plate, the rigidity can be further improved, and a long span can be achieved. You can get wooden beams .

The perspective view which shows a beam (Embodiment 1). The disassembled perspective view which shows a beam (Embodiment 1). Sectional drawing which shows the manufacturing procedure of a beam material (Embodiment 1). The perspective view which shows the manufacturing procedure of the beam material of long span (Embodiment 2). The perspective view which shows the manufacturing procedure of the beam material of long span (Embodiment 3). Sectional drawing which shows the manufacturing procedure of a beam (Embodiment 4). Sectional drawing which shows a beam material (Embodiment 5). Sectional drawing which shows the structure of the conventional beam material.

Embodiment 1
As shown in FIGS. 1 to 3, the beam 1 according to the first embodiment is formed along the long edge 11 (see FIGS. 2 and 3(a)) of the long rectangular first wooden plate 10. One end surface (upper end surface) 12 of the pair of end surfaces (upper and lower end surfaces) 12 and 13 and one plate surface 22 of the long rectangular second wooden plate 20 are in contact with each other. 2, and the other end face (lower end face) 13 of a pair of end faces (upper and lower end faces) 12 and 13 along the long side edge 11 of the first wooden board 10 and a long rectangular shape. The beam member 1 is formed to have an I-shaped cross section by being joined by the joining portion 2 while being in contact with one plate surface 32 of the third wooden plate member 30 .

The first wooden board 10, the second wooden board 20, and the third wooden board 30 (these may be abbreviated as wooden boards hereinafter) are, for example, CLT (Cross Laminated Timber (CLT)). cross laminated board)) or a flat plate made of laminated wood or solid wood.
CLT, as stipulated in Notification No. 3079 of the Ministry of Agriculture, Forestry and Fisheries, is defined as "a sawn board or small square lumber (these are adjusted by joining and bonding them in the length direction with their fiber directions almost parallel to each other. ) are arranged or bonded in the width direction with their fiber directions almost parallel to each other, and laminated and bonded mainly with their fiber directions almost perpendicular to each other to give a structure of 3 or more layers. .
That is, CLT is a piece of wood made by bonding a plurality of boards such that the fiber directions of the boards are orthogonal to each other, and is called a cross-laminated board.
Laminated lumber is a piece of lumber that is constructed by bonding a plurality of boards such that the fiber directions of the boards are parallel to each other.

The first wooden plate member 10 is formed by a flat plate that forms the web (vertical plate portion) of the beam member 1 .
The second wooden board 20 is formed by a flat plate that forms the upper flange (upper horizontal board portion) of the beam 1 .
The third wooden plate member 30 is formed by a flat plate that forms the lower flange (lower horizontal plate portion) of the beam member 1 .

The first wooden board 10 is, for example, a long flat plate with a board thickness of 90 mm, a long side length of 6000 mm (6 m), and a short side length of 800 mm.
The second wooden board 20 and the third wooden board 30 are, for example, long flat plates having a board thickness of 90 mm, a long side length of 6000 mm, and a short side length of 500 mm.
That is, the external dimensions of the beam 1 are, for example, a beam length (span) of 6000 mm, a beam length of 800 mm, and a beam width of 500 mm.

As shown in FIGS. 1 to 3, the joint 2 is, for example, an elongated L-shaped cross-sectional length corresponding to the length of the long edges 11, 21, 31 of the wooden boards 10, 20, 30. For example, an angle steel 6 as a metal connection member, a screw (for example, a screw) 7 for fixing the connection plates 61 and 62 of the angle steel 6 to the wooden boards 10, 20, and 30, the first wooden board 10 and the second screw (for example, screw) 8 for connecting the wooden plate 20 and screw (for example, screw) 9 for connecting the first wooden plate 10 and the third wooden plate 30 .

The angle steel 6 includes a long square flat plate-like first connection plate 61 and a long square flat plate-like second connection plate extending from one long side edge of the first connection plate 61. 62.
The angle steel 6 includes a plate surface 63 of a first connecting plate 61 that is in surface contact with one plate surface 14 or the other plate surface 15 of the first wooden plate 10, and one plate of the second wooden plate 20. The surface 22 or one plate surface 32 of the third wooden plate 30 and the plate surface 64 of the second connecting plate 62 in surface contact are formed so as to be continuous with an L-shaped cross section through an angle of 90°. It is a long steel material with an L-shaped cross section.
As the angle steel 6, a first angle steel 6A, a second angle steel 6B, a third angle steel 6C, and a fourth angle steel 6D are used (hereinafter, these are collectively referred to as angle steel 6 may be referred to as an explanation).

Next, an example of the manufacturing procedure of the beam 1 will be described with reference to FIG.
First, as shown in FIG. 3( a ), the first wooden board 20 is positioned on the center side in the width direction W along the short side edge 23 (see FIG. 2 ) of one board surface 22 of the second wooden board 20 . One end surface 12 of the board 10 is installed to extend along the long side edge 21 (see FIG. 2) of the second wooden board 20, and one board surface 22 of the second wooden board 20 and the first board 20 are installed. and one end face 12 of the wooden board 10 are set so as to come into surface contact with each other.
Then, as shown in FIGS. 3(a) and 3(b), the screw 8 is passed through the second wooden board 20 from the other board surface 24 side of the second wooden board 20, and is inserted into the first wooden board. The first wooden board 10 and the second wooden board 20 are connected by fastening so as to reach the inside of the first wooden board 10 through one end surface 12 of the wooden board 10 .
Similarly, as shown in FIG. 3A, at a position on the center side in the width direction W along the short side edge 33 (see FIG. 2) of one plate surface 32 of the third wooden plate 30, the first The other end surface 13 of the wooden board 10 is installed so as to extend along the long side edge 31 (see FIG. 2) of the third wooden board 30, and the one board surface 32 of the third wooden board 30 and the third wooden board 30 are installed. The other end surface 13 of one wooden board 10 is set to be in surface contact.
Then, as shown in FIGS. 3(a) and 3(b), the screw 9 is passed through the third wooden board 30 from the other board surface 34 side of the third wooden board 30, and is inserted through the first wooden board. The first wooden board 10 and the third wooden board 30 are connected by fastening so as to reach the inside of the first wooden board 10 through the other end face 13 of 10 .
A plurality of screws 8 and 9 are fastened at predetermined intervals in the direction along the long edge 21 of the second wooden board 20 (see FIGS. 1 and 2).
As described above, the first wooden board 10, the second wooden board 20, and the third wooden board 30 are connected by the screws 8 and 9 to form an I-shaped cross section.

Next, as shown in FIGS. 3A and 3B, the plate surface 63 of the first connecting plate 61 of the first angle iron 6A and the one plate surface 14 on the upper end side of the first wooden plate 10 and the plate surface 64 of the second connecting plate 62 of the first angle iron 6A and one plate surface 22 of the second wooden plate 20 are brought into surface contact, and then the screw 7 is passed through a through hole (not shown) formed in the first connecting plate 61 of the first angle steel 6A and fastened to the first wooden board 10, and the screw 7 is inserted into the first connection plate 61 of the first angle steel 6A. It is fastened to the second wooden plate member 20 through a through hole (not shown) formed in the second connecting plate 62 .
Similarly, the plate surface 63 of the first connecting plate 61 of the second angle steel 6B and the other plate surface 15 on the upper end side of the first wooden plate 10 are brought into surface contact, and the second angle steel 6B is After the plate surface 64 of the second connecting plate 62 and one plate surface 22 of the second wooden plate 20 are brought into surface contact, the screw 7 is inserted into the first connecting plate of the second angle steel 6B. 61 formed in the second connecting plate 62 of the second angle steel 6B. and fastened to the second wooden plate 20 .
Similarly, the plate surface 63 of the first connecting plate 61 of the third angle steel 6C and one plate surface 14 on the lower end side of the first wooden plate 10 are brought into surface contact, and the third angle steel 6C After the plate surface 64 of the second connecting plate 62 and one plate surface 32 of the third wooden plate 30 are brought into surface contact, the screw 7 is inserted into the first connecting plate of the third angle steel 6C. 61 formed in the second connecting plate 62 of the third angle steel 6C. and fastened to the third wooden board 30.
Similarly, the plate surface 63 of the first connecting plate 61 of the fourth angle steel 6D and the other plate surface 15 on the lower end side of the first wooden plate 10 are brought into surface contact, and the fourth angle steel 6C After the plate surface 64 of the second connecting plate 62 and one plate surface 32 of the third wooden plate 30 are brought into surface contact, the screw 7 is inserted into the first connecting plate of the fourth angle steel 6D. 61 formed in the second connecting plate 62 of the fourth angle steel 6D. and fastened to the third wooden board 30.
A plurality of screws 7 are fastened at predetermined intervals in the longitudinal direction of each of the angle steels 6A, 6B, 6C, and 6D (see FIGS. 1 and 2).

As described above, one end surface 12 of the first wooden board 10 and one board surface 22 of the second wooden board 20 are joined by the joint 2, and the other end surface 13 of the first wooden board 10 is joined. One plate surface 32 of the third wooden plate 30 is joined by the joining portion 2 to obtain a long beam 1 having an I-shaped cross section.

According to the beam material 1 according to Embodiment 1, the angle steel 6 (the first angle steel 6A, the second angle steel 6B, the third angle steel 6C, and the fourth angle steel 6D) is used in the joint portion 2. Therefore, it is possible to provide a wooden beam member 1 having an I-shaped cross section, high rigidity, and excellent anti-bending effect.
That is, the beam material disclosed in Non-Patent Document 1 is, as shown in FIG. Since the structure is only fixed by , the joint strength between the wooden board 101 that serves as the web and the wooden board 110 that serves as the flange is weak, the rigidity is low, and the material tends to deform in the direction perpendicular to the axial direction. It becomes a beam material (easily bent).
On the other hand, according to the beam 1 according to the first embodiment, three long square wooden boards, that is, the first wooden board 10, the second wooden board 20, and the third wooden board 30 are Angle irons 6 are combined and joined to the joint 2 between the first wooden board 10 and the second wooden board 20 and the joint 2 between the first wooden board 10 and the third wooden board 30. is used to form the I-shaped cross section, the beam 1 which is lightweight, has higher rigidity than the beam disclosed in Non-Patent Document 1, and is hard to bend can be obtained.
In addition, according to the beam 1 according to the first embodiment, the length of the long edge of the long square wooden board (the first wooden board 10, the second wooden board 20, and the third wooden board 30) The angle steel 6 having a length corresponding to the width of the wooden board is used, and the angle steel 6 is provided so as to be continuous along the long edge of the wooden plate, so that the rigidity can be further improved and the long span can be achieved. A possible wooden beam 1 having an I-shaped cross section can be obtained.

Embodiment 2
When a long-span beam having a beam length longer than that of the above-described beam 1 is required, a beam having a configuration in which an end joining means 80A as shown in FIG. A long-span beam 1X can be obtained by using the beam 1B having the configuration including the beam 1A and the end joining means 80B.

That is, one beam end portion of one beam member 1 is formed as an end joining means 80A, and the other beam end portion of the other beam member 1 is formed as an end joining means 80A. By joining the end joining means 80B of the beam 1B formed at 80B, the long-span beam 1X can be formed.

As shown in FIG. 4A, the end joining means 80A of one beam member 1A is such that one end in the longitudinal direction of the angle steel 6 as a connecting member is connected to a wooden board (the first wooden board 10, The second wooden plate member 20 and the third wooden plate member 30) are configured to protrude in the direction along the long side edge from one end face 1a in the direction along the long side edge.
In addition, the end joining means 80B of the other beam member 1B is such that the other longitudinal end surface 6b of the angle steel 6 is made of wooden plate members (the first wooden plate member 10, the second wooden plate member 20, and the third wooden plate member). 30) is positioned on the side of the opposite end face (one end face) by a predetermined distance b from the other end face 1b in the direction along the long side edge of 30). In other words, the other longitudinal end face 6b of the angle steel 6 is set at a position retreated from the other end face 1b in the direction along the long edge of the wooden plate toward the opposite end face (one end face). be done. The distance b between the other end face 6b of the angle steel 6 and the other end face 1b of the wooden plate is the length of the end portion of the angle steel 6 protruding from the one end face 1a of the wooden plate of the beam 1A. It is configured to be slightly longer than the protruding length.

In Embodiment 2, one end surface 1a of one beam member 1A in the direction along the long side edge of the wooden plate member, that is, the first wooden plate member 10, the second wooden plate member 20, and the third wooden plate member 30 Each one end face in the direction along the long side edge is formed on the same plane, and the other end face 1b in the direction along the long side edge of the wooden board in the other beam 1B, that is, the first The other end surfaces of the wooden plate 10, the second wooden plate 20, and the third wooden plate 30 in the direction along the long edge are formed on the same plane.

The joining method of the end joining means 80A of one beam 1A and the end joining means 80B of the other beam 1B is as shown in FIGS. 4(a) and 4(b).
First, the plate surfaces 63, 64 at the ends of the upper angle irons 6, 6 protruding from one end surface 1a of the wooden plate material of one beam 1A are attached to the first joint means 80B of the other beam 1B. The lower angle steel 6 that is in surface contact with the plate surfaces 14 and 15 of the wooden plate 10 and the plate surface 22 of the second wooden plate 20 and protrudes from one end surface 1a of the wooden plate of one beam 1A , 6 on the plate surfaces 14 and 15 of the first wooden plate 10 and the plate surface 32 of the third wooden plate 30 on the end joining means 80B of the other beam 1B. While being in contact with each other, the end faces 6a, 6a, . . . of the ends of the angle steels 6, 6, . The other end faces 6b, 6b, . set to
Next, using screws 7, the ends of the angle steels 6, 6, . . . It is connected to the wooden board material of the beam material 1B.
As described above, a long-span beam 1X is formed by joining the beam 1A and the beam 1B.
That is, after positioning the ends of the angle steels 6 forming the end joining means 80A of one beam 1A to the end joining means 80B of the other beam 1B, the angle steels 6, 6, . . . The long-span beam 1X can be easily manufactured simply by connecting the ends of 6 to the wooden plate member of the other beam 1B using screws 7.

According to the second embodiment, since the beam 1A with the end joining means 80A and the beam 1B with the end joining means 80B as shown in FIG. The beams 1A and 1B, which are formed in the factory to a length that can be transported from the factory to the site, can be easily joined at the site, and the long-span beam 1X can be easily manufactured at the site. become.

Embodiment 3
Like one beam member 1A of Embodiment 2, each one end surface 1a in the direction along the long edge of the first wooden plate member 10, the second wooden plate member 20, and the third wooden plate member 30 is the same. As shown in FIG. 5, instead of forming on a plane, one end surface 20a and one end surface 30a of each of the second wooden board 20 and the third wooden board 30 in the direction along the long side edge are made to be the same. It is formed on a plane, and one end face 10a in the direction along the long edge of the first wooden board 10 is positioned on a plane parallel to the plane where one end face 20a and one end face 30a are positioned. One of the beams 1C having the configured end joining means 80C is fabricated.
Furthermore, like the other beam member 1B of the second embodiment, the other end surface 1b of each of the first wooden plate member 10, the second wooden plate member 20, and the third wooden plate member 30 in the direction along the long side edge. are not formed on the same plane, and as shown in FIG. are formed on the same plane, and the other end face 10b in the direction along the long edge of the first wooden board 10 is positioned on a plane parallel to the plane where the other end face 20b and the other end face 30b are located The other beam member 1D having the end joining means 80D having a configuration that is aligned with the other beam member 1D is manufactured.

One beam member 1C has one end surface 20a of the second wooden plate member 20, one end surface 30a of the third wooden plate member 30, and one end surface 10a of the first wooden plate member 10. The configuration other than the configuration that is not positioned on the plane is the same as one beam 1A of Embodiment 2, so the description is omitted.
In the other beam 1D, the other end face 20b of the second wooden board 20, the other end face 30a of the third wooden board 30, and the other end face 10b of the first wooden board 10 are the same. The configuration other than the configuration that is not positioned on the plane is the same as the other beam member 1B of the second embodiment, so the description is omitted.

As shown in FIG. 5, in the third embodiment, as in the second embodiment, the end portions of the angle steels 6, 6... protruding from one end face 10a, 20a, 30a of the wooden plate material of one beam member 1C are and the other longitudinal end faces 6b, 6b, . 10a, 30a and the other end surface 20b, 10b, 30b of the wooden board of the other beam 1D are set in contact with each other, and then one beam positioned at the end joining means 80D of the other beam 1D is connected. The ends of the angle steels 6, 6, . . .
As described above, a long-span beam 1Y is formed by joining the beam 1C and the beam 1D.
That is, after the ends of the angle steels 6, 6 of one beam member 1C are positioned in the end joining means 80D of the other beam member 1D, the angle steels 6, 6 of one beam member 1C are attached. The long-span beam 1Y can be easily manufactured simply by connecting the end portion to the wooden board member of the other beam 1D using the screws 7. FIG.

According to the third embodiment, one of the second wooden plate members 20 of one beam member 1C is attached to the joint surface between the end joint member 80C of one beam member 1C and the end joint member 80D of the other beam member 1D. and the other end surface 20b of the second wooden plate 20 of the other beam 1D and the end surface 30a of the third wooden plate 30 of the one beam 1C and the other beam 1D The joint surface with one end surface 30b of the third wooden board 30, the one end surface 10a of the first wooden board 10 of one beam 1C, and the other of the first wooden board 10 of the other beam 1D Since the joint surface with the end surface 10b is not positioned on the same plane, the long-span beam 1Y has higher rigidity than the long-span beam 1X of the second embodiment, that is, the deflection prevention effect is excellent. A long-span beam 1Y can be obtained.

Embodiment 4
As shown in FIG. 6( a ), on one plate surface 14 and the other plate surface 15 of the first wooden plate 10 , the surface of the portion where the connection plate 61 of the angle iron 6 is installed is the plate of the connection plate 61 . Connection plate fitting recesses 16, 16, 17, 17 formed by cutting out more than the thickness are provided, and a portion on one plate surface 22 of the second wooden plate 20 where the connection plate 62 of the angle iron 6 is installed. The connecting plate fitting recesses 26, 26 are formed by cutting the surface of the connecting plate 62 by more than the thickness of the connecting plate 62, and further, on one plate surface 32 of the third wooden plate 30, the connecting plate 62 of the angle steel 6 Connection plate fitting recesses 36, 36 are formed by cutting the surface of the portion where is installed by the thickness of the connection plate 62 or more.

Then, as shown in FIG. 6B, the connecting plates 61 and 62 of the angle steels 6A and 6B are fitted into the connecting plate fitting recesses 16 and 26, and the angle steels 6A and 6B are screwed into the first screws 7. The angle steels 6C and 6D are connected to the wooden plate 10 and the second wooden plate 20, and the angle steels 6C and 6D are screwed together with the connecting plates 61 and 62 of the angle steels 6C and 6D fitted into the connecting plate fitting recesses 17 and 36, respectively. The beam member 1</b>E is connected to the first wooden plate member 10 and the third wooden plate member 30 in FIG.

According to Embodiment 4, the angle iron 6 can be configured so as not to protrude from the plate surface of the wooden plate, so that the beam member 1E with excellent design can be obtained.
In this case, by locating the surface of the connecting plate of the angle steel 6 and the plate surface of the wooden plate on the same plane, it is possible to obtain a beam with excellent design.
Further, when the surface of the connecting plate of the angle steel 6 is set in a state slightly recessed toward the connecting plate fitting concave side, and a surface material such as wood grain is attached to the surface of the connecting plate of the angle steel 6, It is possible to obtain a beam material which can be processed so as to look like a wooden beam material in terms of appearance, and which is excellent in design.

Embodiment 5
As shown in FIG. 7, on one plate surface 22 of the second wooden plate 20, a fitting recess 27 is formed into which one end surface 12 of the first wooden plate 10 is fitted, and a third wooden plate is formed. A fitting recess 37 is formed in one plate surface 32 of the first wooden plate 10 to fit the other end surface 13 side of the first wooden plate 10 .
Then, one end surface 12 side of the first wooden board 10 is fitted into the fitting recess 27 formed in one board surface 22 of the second wooden board 20, and the other end surface of the first wooden board 10 is fitted. The first wooden plate 10 and the second wooden plate 20 are joined together using an angle iron 6 with the 13 side fitted into the fitting recess 37 formed in one plate surface 32 of the third wooden plate 30 . The first wooden plate member 10 and the third wooden plate member 30 are joined using the angle steel 6 to form the beam member 1F.

According to Embodiment 5, one end surface 12 side of the first wooden board 10 is fitted into the fitting recess 27 of the second wooden board 20, and the other end surface 13 side of the first wooden board 10 is fitted. is fitted in the fitting recess 37 of the third wooden board 30, the joint strength between the first wooden board 10 and the second wooden board 20, and the first wooden board 10 and the second The joint strength with the wooden board 30 of 3 can be further improved, and the beam 1F with higher rigidity and less bending can be obtained.

In each embodiment, the first wooden board 10 and the second wooden board 20 are connected with the screw 8, and the first wooden board 10 and the third wooden board 30 are connected with the screw 9. , the first wooden plate 10 and the second wooden plate 20 are joined using the angle iron 6 and the screw 7 without connecting with the screw 8 and the screw 9, and the first A configuration in which the wooden plate 10 and the third wooden plate 30 are joined using the angle steel 6 and the screw 7 may be employed.

Moreover, in each embodiment, although the cross-sectional I-shaped beam was illustrated, the cross-sectional H-shaped beam may be used.

The first wooden plate 10 and the connecting plate 61 of the angle steel 6, and the second wooden plate 20 or the third wooden plate 30 and the connecting plate 62 of the angle steel 6 are bonded by screws 7. agent may be used in combination.

Also, although the angle steel 6 is used as the metal connection member having an L-shaped cross section, a metal connection member having an L-shaped cross section other than the angle steel 6 may be used.

1, 1A to 1F beams, 2 joints,
6 (6A, 6B, 6C, 6D) angle steel (connecting member), 7 screw,
10 first wooden board, 11 long edge of first wooden board,
12 One end face of the first wooden board, 13 The other end face of the first wooden board,
14, 15 board surface of the first wooden board,
20 second wooden board, 22 board surface of second wooden board,
30 third wooden board, 32 board surface of the third wooden board,
63, 64 plate surface of angle iron (connecting member), b predetermined distance,
80A-80D End Joining Means.

Claims (2)

One end face of a pair of end faces along the long side edges of the first long rectangular wooden plate is joined to the plate surface of the second long rectangular wooden plate in contact with each other. At the same time, the other end face of the pair of end faces along the long side edges of the first wooden plate is joined to the plate surface of the long rectangular third wooden plate in a state of contact. , I-shaped cross section or H-shaped cross section, wherein the plate surface of the metal connection member having the L-shaped cross section is aligned with the plate surface of the first wooden plate and the plate surface of the second wooden plate. The first wooden plate and the second wooden plate are joined by connecting the connecting member to the first wooden plate and the second wooden plate while being in contact with the L-shaped cross section The connection member is connected to the first wooden plate and the third wooden plate while the plate surface of the metal connection member is in contact with the plate surface of the first wooden plate and the plate surface of the third wooden plate. A plurality of beams provided with end joining means at the ends of the beams constructed by joining the first wooden plate and the third wooden plate by joining, and the end of one of the beams is used. A beam member configured by joining a section joining means and an end joining means of the other beam member,
The end joining means of one of the beams is configured so that the end of the connecting member protrudes in the direction along the long edge from one end face in the direction along the long edge of the wooden plate,
The end joining means of the other beam member is such that the end of the connecting member is positioned on one end face side by a predetermined distance from the other end face in the direction along the long edge of the wooden board. The predetermined distance between the end face of the end and the other end face in the direction along the long edge of the wooden board is greater than the length of the end of the connecting member projecting from one end face of the wooden board of one beam. is configured to be longer than
The end of the connecting member protruding from one end surface of the wooden plate in the end joining means of one beam is connected to the first wooden plate and the second wooden plate of the other beam with screws. , and a first wooden plate member and a third wooden plate member of the other beam member by means of screws . 2. The beam according to claim 1, wherein the connecting member is an angle iron having a length corresponding to the length of the long edge of the wooden board .

Images