Joint structure in wooden frame

Abstract

To improve aesthetics of joints in wooden frames.SOLUTION: A joint structure in a wooden frame comprises a first wooden member extending in a first direction when viewed vertically, a second wooden member facing the first wooden member in an up-and-down direction and extending in a second direction intersecting the first direction when viewed vertically, and a joint member joining the first wooden member and the second wooden member. The joint member has a first portion embedded in the first wooden member and fixed to the first wooden member, and a second portion continuous with the first portion and embedded in the second wooden member and fixed to the second wooden member.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The technology disclosed in this specification relates to a joint structure in a wooden frame. [Background technology]

[0002] Various joint structures for wooden frames made of wooden members have been proposed. For example, a joint structure between a first wooden member and a second wooden member that faces the first wooden member in the vertical direction and extends in a direction intersecting the first wooden member is known in which the wooden members are pressed down from the outside using joint metal fittings and screws to join them (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 06-146426 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned conventional joint structure, the joint metal is exposed to the outside, so there is room for improvement in terms of aesthetic appearance of the joint.

[0005] This specification discloses a technique that can solve at least a part of the above-mentioned problems. [Means for solving the problem]

[0006] The technology disclosed in this specification can be realized, for example, in the following forms.

[0007] (1) A joint structure in a wooden frame disclosed in this specification includes a first wooden member extending in a first direction as viewed in a vertical direction, a second wooden member facing the first wooden member in the up-down direction and extending in a second direction intersecting the first direction as viewed in a vertical direction, and a joint member joining the first wooden member and the second wooden member. The joint member has a first portion embedded in the first wooden member and fixed to the first wooden member, and a second portion continuous with the first portion, embedded in the second wooden member, and fixed to the second wooden member.

[0008] According to this joint structure, the joint member for joining the first and second wooden members is not exposed to the outside, and the aesthetic appearance of the joint can be improved.

[0009] (2) In the above-mentioned joint structure, the first portion of the joint member may be fixed to the first wooden member by a first screw driven into the outer surface of the first wooden member, and the second portion of the joint member may be fixed to the second wooden member by a second screw driven into the outer surface of the second wooden member. According to this configuration, the aesthetics of the joints can be further improved by using inconspicuous screws to fasten the joint member to each wooden member.

[0010] (3) In the above joint structure, a configuration may be provided in which a plurality of the joint members are arranged in the second direction. With this configuration, it is possible to improve the joint strength of the joint while improving the appearance of the joint.

[0011] The technology disclosed in this specification can be realized in various forms, such as a joint structure in a wooden frame, a wooden frame or building having such a joint structure, a manufacturing method or construction method thereof, etc. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is an explanatory diagram showing the configuration of a building 100 according to an embodiment of the present invention. [Diagram 2] FIG. 1 is an explanatory diagram showing a cross-sectional configuration of a joint 150 between a wooden beam 91 and a wooden beam 92. [Diagram 3] FIG. 3 is an explanatory diagram showing a cross-sectional configuration of a joint 150 taken along the line III-III in FIG. 2; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] A. Embodiment: Fig. 1 is an explanatory diagram showing the configuration of a building 100 in this embodiment. Fig. 1 shows the external configuration of a part of the building 100. In the following description, the Z-axis direction in the figure is also referred to as the "up-down direction" or "height direction," the positive Z-axis direction is also referred to as the "upward direction," and the negative Z-axis direction is also referred to as the "downward direction."

[0014] The building 100 of this embodiment is a stage-like building with a floor surface 101 constructed at an elevated position. The building 100 includes a foundation 90, wooden columns 10, wooden beams 20, joists 102, and floor materials 103.

[0015] The foundation 90 constitutes the lowest part of the building 100 and is a structure that transmits the load from above to the ground. The foundation 90 is made of, for example, reinforced concrete. The foundation 90 may be a spread foundation or a pile foundation.

[0016] The wooden column 10 is a vertical member for transmitting the load of a floor structure or the like to the foundation 90. The wooden column 10 is made of wood. In this embodiment, the wooden column 10 is made of symmetrical different grade laminated lumber (e.g., Scots pine E95-F270 or Japanese cypress E95-F270, etc.). The cross section of the wooden column 10 is, for example, approximately rectangular, 420 mm x 420 mm.

[0017] The wooden beam 20 is a horizontal member that connects to the wooden columns 10 and supports the load of a floor structure and the like. The wooden beam 20 is made of wood. In this embodiment, the wooden beam 20 is made of symmetrical different grade laminated lumber (e.g., cedar E65-F225 or Scotch pine E105-F300, etc.). The cross section of the wooden beam 20 is, for example, approximately rectangular, 210 mm×420 mm to 210 mm×780 mm. Hereinafter, the wooden columns 10 and the wooden beam 20 are also collectively referred to as wooden members 10, 20. A frame structure formed by wooden columns and wooden beams is an example of a wooden frame structure.

[0018] The flooring 103 is a plate-like member that constitutes a floor structure. The flooring 103 is made of wood. In this embodiment, the flooring 103 is made of Cross Laminated Timber (CLT) (for example, S90-3-3 cypress, S90-5-5 cypress, or Mx90-3-3 exterior: cypress, interior: cedar, etc.). The thickness of the flooring 103 is, for example, about 90 mm to 150 mm. A material other than wood (for example, a membrane material) may be used as at least a part of the flooring 103.

[0019] The joists 102 are horizontal members that support the floor materials 103 that make up the floor structure. The joists 102 are made of wood. In this embodiment, the joists 102 are made of symmetrical different grade laminated lumber (e.g., Scots pine E105-F300, etc.). The cross section of the joists 102 is, for example, approximately rectangular, measuring 120 mm×270 mm to 120 mm×330 mm. The arrangement pitch of the joists 102 is, for example, about 1800 mm.

[0020] The building 100 of this embodiment is a building having a wooden rigid frame structure composed of wooden columns 10 and wooden beams 20. Therefore, each joint between the wooden columns 10 and the wooden beams 20 is a moment-resisting joint having rotational rigidity. In addition, as shown in FIG. 2 described later, the building 100 of this embodiment has a wooden girder 91 and a wooden beam 92 as the wooden beam 20, and has a joint 150 between the wooden girder 91 and the wooden beam 92. Hereinafter, a joint structure 150A of each joint 150 between the wooden girder 91 and the wooden beam 92 will be described. The wooden girder 91 is an example of a first wooden member, and the wooden beam 92 is an example of a second wooden member.

[0021] FIG. 2 is an explanatory diagram showing the cross-sectional configuration of a joint 150 between a wooden main beam 91 and a wooden minor beam 92, and FIG. 3 is an explanatory diagram showing the cross-sectional configuration of the joint 150 taken along the line III-III in FIG.

[0022] The wooden girder 91 and the wooden joist 92 face each other in the up-down direction. More specifically, the wooden joist 92 is located above the wooden girder 91. In addition, when viewed in the vertical direction, the wooden girder 91 and the wooden joist 92 extend in directions that intersect with each other. More specifically, when viewed in the vertical direction, the wooden girder 91 extends in the X-axis direction, and the wooden joist 92 extends in the Y-axis direction that is perpendicular to the X-axis direction. In this embodiment, another wooden member 99 is fixed on the wooden joist 92. The X-axis direction is an example of a first direction, and the Y-axis direction is an example of a second direction.

[0023] The wooden girder 91 and the wooden joists 92 are joined to each other via a joining member 93. The joining member 93 is a rod-shaped member, and is formed, for example, from a tubular steel material. The joining member 93 has a first portion 93a and a second portion 93b continuous with the first portion 93a. The first portion 93a is embedded in the wooden girder 91, and the second portion 93b is embedded in the wooden joists 92. In other words, the joining member 93 is embedded inside the wooden girder 91 or the wooden joists 92 over its entire length, and is not exposed to the outside.

[0024] The first portion 93a of the joint member 93 is fixed to the wooden girder 91 by two first screws 94a (e.g., drift pins with a diameter of 12 mm) driven into the side of the wooden girder 91. The second portion 93b is fixed to the wooden beam 92 by two second screws 94b (e.g., drift pins with a diameter of 12 mm) driven into the side of the wooden beam 92.

[0025] As shown in FIG. 3, the wooden beam 91 and the wooden beam 92 are joined by two joining members 93 arranged in the extending direction of the wooden beam 92 (Y-axis direction).

[0026] As described above, the joint structure 150A of the joint portion 150 in the building 100 of this embodiment includes a wooden girder 91 extending in the X-axis direction in a vertical view, a wooden joist 92 facing the wooden girder 91 in the up-down direction and extending in the Y-axis direction intersecting the X-axis direction in a vertical view, and a joint member 93 that joins the wooden girder 91 and the wooden joist 92. The joint member 93 has a first portion 93a and a second portion 93b. The first portion 93a of the joint member 93 is embedded in the wooden girder 91 and fixed to the wooden girder 91. The second portion 93b of the joint member 93 is continuous with the first portion 93a, embedded in the wooden joist 92, and fixed to the wooden joist 92. Therefore, according to the joint structure 150A of this embodiment, the joint members 93 for joining the wooden beams 91 and the wooden beams 92 are not exposed to the outside, and the aesthetic appearance of the joint 150 can be improved.

[0027] In the joint structure 150A of this embodiment, the first portion 93a of the joint member 93 is fixed to the wooden girder 91 by a first screw 94a driven from the outer surface of the wooden girder 91, and the second portion 93b is fixed to the wooden minor beam 92 by a second screw 94b driven from the outer surface of the wooden minor beam 92. Therefore, according to the joint structure 150A of this embodiment, the aesthetics of the joint 150 can be further improved by using inconspicuous screws to fix the joint member 93 to each wooden member.

[0028] Moreover, the joint structure 150A of the present embodiment includes a plurality of joint members 93 arranged in the Y-axis direction. Therefore, according to the joint structure 150A of the present embodiment, the joint strength of the joint 150 can be improved while improving the appearance of the joint 150.

[0029] B. Variations: The technology disclosed in this specification is not limited to the above-described embodiments, and can be modified in various forms without departing from the spirit of the invention. For example, the following modifications are also possible.

[0030] The configurations of the building 100 and the joint structure 150A in the above embodiment are merely examples and can be modified in various ways. For example, in the above embodiment, the method of using the screws 94a and 94b is adopted as the method of fixing the joint member 93 to the wooden beam 91 and the wooden beam 92, but other fixing methods may be adopted.

[0031] In the above embodiment, the number and arrangement of the joining members 93 in the joining portion 150 are merely examples and can be modified in various ways. For example, one joining member 93 may be used in the joining portion 150, or three or more joining members 93 may be used in the joining portion 150.

[0032] In the above embodiment, the joint 150 between the wooden beam 91 and the wooden beam 92 is used as an example, but the technology disclosed in this specification is not limited to the joint 150 between the wooden beam 91 and the wooden beam 92, and can be widely applied to the joint between a first wooden member extending in a first direction when viewed vertically, and a second wooden member that faces the first wooden member in the up-down direction and extends in a second direction that intersects the first direction when viewed vertically. [Explanation of symbols]

[0033] 10: Wooden column 20: Wooden beam 90: Foundation 91: Wooden beam 92: Wooden beam 93: Joint member 93a: First part 93b: Second part 94a: First screw 94b: Second screw 99: Wooden member 100: Building 101: Floor surface 102: Joist material 103: Floor material 150: Joint 150A: Joint structure

Claims

1. A joint structure in a wooden frame, A first wood member extending in a first direction when viewed in a vertical direction; a second wood member that faces the first wood member in the up-down direction and extends in a second direction that intersects with the first direction when viewed in the vertical direction; a joining member that joins the first wood member and the second wood member; Equipped with The joining member is a first portion embedded in and fixed to the first wood member; a second portion continuous with the first portion, embedded within the second wood member, and fixed to the second wood member; A joint structure having the above structure.

2. The joining structure according to claim 1, The first portion of the joining member is fixed to the first wooden member by a first screw driven into an outer surface of the first wooden member, A joint structure in which the second portion of the joint member is fixed to the second wood member by a second screw driven into the outer surface of the second wood member.

3. The joining structure according to claim 1 or 2, A joint structure comprising a plurality of the joint members arranged in the second direction.

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