Wooden column-beam batten joint structure

Abstract

To provide a frame having a batten-jointed wooden column and wooden beam, where a deformation volume of the frame at the time of an earthquake is reduced.SOLUTION: A wooden column-beam batten joint structure comprises: a wooden column 20; a wooden beam 40 that penetrates an open hole 22 formed on the wooden column 20; and a stiffening plate 50 that is provided in a connection part 40A of the wooden beam 40 arranged in the open hole 22 so that its thickness direction is a beam width direction of the wooden beam 40 and is jointed to the wooden beam 40.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a through-joint structure of wooden columns and beams.

Background Art

[0002] A joint structure of a continuous wooden column and wooden beams arranged on both sides of the wooden column is known (see, for example, Patent Documents 1 and 2).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, at the through-joint portion of the wooden column and the wooden beam, the amount of deformation during an earthquake tends to increase, and the amount of deformation (shearing deformation amount) of the structure having these wooden columns and wooden beams may also increase.

[0005] In consideration of the above facts, an object of the present invention is to reduce the amount of deformation of a structure having a through-jointed wooden column and wooden beam during an earthquake.

Means for Solving the Problems

[0006] The through-joint structure of a wooden column and beam according to claim 1 includes a wooden column, a wooden beam passing through a through-hole formed in the wooden column, and a supplementary rigid plate provided in a mouth portion of the wooden beam disposed in the through-hole with a thickness direction being a beam width direction of the wooden beam and joined to the wooden beam.

[0007] According to the through-joint structure of the wooden column and beam according to claim 1, the wooden beam penetrates through the through-hole formed in the wooden column. In this wooden beam, a supplementary rigid plate is provided in the joint portion disposed within the through-hole of the wooden column. The supplementary rigid plate is provided with its thickness direction as the beam width direction of the wooden beam and is joined to the wooden beam.

[0008] By using this supplementary rigid plate to reinforce the joint portion of the wooden beam (shear panel reinforcement), the deformation amount (shear deformation amount) of the through-joint portion between the wooden column and the wooden beam during an earthquake can be efficiently reduced. Therefore, during an earthquake, the deformation amount (shear deformation amount) of the structure having the wooden column and the wooden beam can also be efficiently reduced.

[0009] The through-joint structure of the wooden column and beam according to claim 2 is the through-joint structure of the wooden column and beam according to claim 1, wherein the wooden beam has the joint portion and beam portions respectively provided on both sides of the joint portion, and the supplementary rigid plate is provided across the joint portion and the beam portions on both sides.

[0010] According to the through-joint structure of the wooden column and beam according to claim 2, the wooden beam has a joint portion and beam portions respectively provided on both sides of the joint portion. A supplementary rigid plate is provided across these joint portion and beam portions.

[0011] Thereby, the deformation amount (shear deformation amount) of the through-joint portion between the wooden column and the wooden beam during an earthquake is further reduced. Therefore, during an earthquake, the deformation amount (shear deformation amount) of the structure having the wooden column and the wooden beam is also further reduced.

[0012] The through-joint structure of the wooden column and beam according to claim 3 is the through-joint structure of the wooden column and beam according to claim 1, wherein the supplementary rigid plate extends across the upper surface and the lower surface of the joint portion of the wooden beam.

[0013] According to the through-joint structure of the wooden column and beam according to claim 3, the supplementary rigid plate extends across the upper surface and the lower surface of the joint portion of the wooden beam. By using this supplementary rigid plate, for example, when receiving the wooden column, the intrusion of the wooden column into the upper surface and the lower surface of the joint portion of the wooden beam during an earthquake is suppressed.

[0014] As a result, the amount of deformation (shearing deformation amount) of the through-joint portion between the wooden column and the wooden beam during an earthquake is further reduced. Therefore, during an earthquake, the amount of deformation (shearing deformation amount) of the structure having the wooden column and the wooden beam is also further reduced.

[0015] The through-joint structure of the wooden column and beam according to claim 4 is the through-joint structure of the wooden column and beam according to claim 1, and includes a plurality of joint members that penetrate the stiffening plate in the thickness direction and join the stiffening plate and the joint portion of the wooden beam.

[0016] According to the through-joint structure of the wooden column and beam according to claim 4, the plurality of joint members penetrate the stiffening plate in the thickness direction and join the stiffening plate and the joint portion of the wooden beam. By these joint members, the joint portion of the wooden beam and the stiffening plate can be easily joined.

[0017] The through-joint structure of the wooden column and beam according to claim 5 is the through-joint structure of the wooden column and beam according to any one of claims 1 to 4, and includes a wedge member disposed between the upper surface of the wooden beam and the upper inner wall surface of the through-hole.

[0018] According to the through-joint structure of the wooden column and beam according to claim 5, a wedge member is disposed between the upper surface of the wooden beam and the upper inner wall surface of the through-hole of the wooden column. As a result, the amount of deformation (shearing deformation amount) of the through-joint portion between the wooden column and the wooden beam during an earthquake is further reduced. Therefore, during an earthquake, the amount of deformation (shearing deformation amount) of the structure having the wooden column and the wooden beam is also further reduced.

Advantages of the Invention

[0019] As described above, according to the present invention, in a structure having a through-jointed wooden column and wooden beam, the amount of deformation of the structure during an earthquake can be reduced.

Brief Description of the Drawings

[0020]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Mode for Carrying Out the Invention

[0021] Hereinafter, an embodiment will be described with reference to the drawings.

[0022] (Through-joint structure of wooden column and beam) In FIGS. 1 and 2, a wooden column 20 and a wooden beam 40 to which a through-joint structure of a wooden column and beam according to this embodiment is applied are shown. The wooden column 20 and the wooden beam 40 are formed of a wooden material such as laminated wood, for example. The wooden column 20 and the wooden beam 40 are through-jointed at a through-joint portion J.

[0023] (Wooden column) The wooden column 20 is formed in a rectangular cross-section (prismatic shape). Further, as shown in FIGS. 3 and 4, the wooden column 20 has a joint portion 20A to which the wooden beam 40 is joined. A through-hole 22 is formed in a side surface 20S of the joint portion 20A. The through-hole 22 penetrates the joint portion 20A in the width direction of the wooden column 20 (the material axis direction of the wooden beam 40). The cross-sectional shape of the through-hole 22 is a rectangular shape corresponding to the cross-sectional shape of the wooden beam 40.

[0024] (Wedge receiving member) As shown in FIGS. 1 and 2, a wedge receiving member 30 is attached to the upper inner wall surface 22U of the through-hole 22. The wedge receiving member 30 is a member that fills a gap between the upper inner wall surface 22U of the through-hole 22 and an inclined surface 80U of a pair of wedge members 80 described later.

[0025] The upper surface 30U of the wedge receiving member 30 is a flat surface (horizontal plane). This wedge receiving member 30 is fixed to the upper inner wall surface 22U of the through hole 22 by screws 32 in a state of being overlapped with the upper inner wall surface 22U of the through hole 22.

[0026] The lower surface of the wedge receiving member 30 is formed in a substantially triangular shape that protrudes downward when viewed from the beam width direction of the wooden beam 40. A pair of inclined surfaces 30L are formed on the lower surface of this wedge receiving member 30. The pair of inclined surfaces 30L are inclined upward from the center side to both end sides of the wedge receiving member 30 when viewed from the beam width direction of the wooden beam 40.

[0027] (Wooden beam) As shown in FIG. 3, the wooden beam 40 is formed in a rectangular cross-sectional shape. Further, the wooden beam 40 penetrates through the through hole 22 of the wooden column 20. Note that the wooden beam 40 is installed between a pair of adjacent wooden columns 20 and constitutes a structure together with the pair of wooden columns 20.

[0028] As shown in FIGS. 1, 2, and 4, the wooden beam 40 has a joint portion 40A and beam portions 40B respectively arranged on both sides of the joint portion 40A. The joint portion 40A is arranged within the through hole 22 of the wooden column 20. On the other hand, the beam portion 40B is arranged outside the through hole 22 of the wooden column 20. A fitting prevention plate 70 is attached to the lower surface 40L of this joint portion 40A.

[0029] (Fitting prevention plate) As shown in FIGS. 1 and 2, the fitting prevention plate 70 is a member that prevents the lower inner wall surface 22L of the wooden column 20 from fitting into the lower surface 40L of the joint portion 40A of the wooden beam 40. This fitting prevention plate 70 is formed of a steel plate or the like and is fixed by a plurality of screws 72 in a state of being overlapped with the lower surface 40L of the joint portion 40A of the wooden beam 40. Through this fitting prevention plate 70, the lower surface 40L of the joint portion 40A of the wooden beam 40 is placed on the lower inner wall surface 22L of the through hole 22 of the wooden column 20.

[0030] (Wedge member) The pair of wedge members 80 are fixing members that fix the wooden beam 40 to the wooden column 20 by filling the gap between the inclined surface 30L of the wedge receiving member 30 provided on the upper inner wall surface 22U of the through hole 22 of the wooden column 20 and the upper surface 40U of the wooden beam 40.

[0031] Specifically, the pair of wedge members 80 are made of, for example, metal and are triangular as a whole when viewed from the beam width direction of the wooden beam 40. The lower surface 80L of each wedge member 80 is a flat surface (horizontal plane) and is placed on the upper surface of the wooden beam 40.

[0032] The upper surface of each wedge member 80 is an inclined surface 80U that inclines downward toward the wooden column 20 side when viewed from the beam width direction of the wooden beam 40. The inclination angle of this inclined surface 80U is substantially the same as the inclination angle of the inclined surface 30L of the wedge receiving member 30 described above. This inclined surface 80U is overlapped with the inclined surface 30L of the wedge receiving member 30.

[0033] Here, as shown in FIG. 5, the pair of wedge members 80 are fitted (driven in) between the inclined surface 30L of the wedge receiving member 30 and the upper surface 40U of the wooden beam 40 from both sides of the through hole 22 of the wooden column 20. Also, as shown in FIG. 1, each wedge member 80 is fixed to the upper surface 40U of the wooden beam 40 by screws 82. Thereby, the wooden beam 40 is fixed to the wooden column 20.

[0034] (Bearing pressure transmission rod) As shown in FIG. 1, a plurality of bearing pressure transmission rods 60 are provided at the joint portion 40A of the wooden beam 40. The plurality of bearing pressure transmission rods 60 are members that suppress the intrusion of the pair of wedge members 80 into the upper surface 40U of the wooden beam 40 by transmitting the bearing pressure P of the pair of wedge members 80 to the intrusion prevention plate 70 during an earthquake.

[0035] The plurality of bearing pressure transmission rods 60 are formed of, for example, metal rod-shaped members such as lag screws or steel bars. Further, the plurality of bearing pressure transmission rods 60 are arranged between the anti-embedding plate 70 and the pair of wedge members 80 with the axial direction being the beam forming direction (vertical direction) of the wooden beam 40.

[0036] The plurality of bearing pressure transmission rods 60 are arranged on both sides in the material axial direction at the joint portion 40A of the wooden beam 40. Further, as shown in FIG. 4, the plurality of bearing pressure transmission rods 60 are respectively arranged on both sides in the thickness direction of the supplementary stiffening plate 50 described later.

[0037] As shown in FIG. 1, each bearing pressure transmission rod 60 is arranged in a circular through hole 62 penetrating the joint portion 40A of the wooden beam 40 in the beam forming direction, and the lower end portion thereof is supported (placed) by the anti-embedding plate 70 attached to the lower surface 40L of the joint portion 40A of the wooden beam 40. In this state, each bearing pressure transmission rod 60 extends across the upper surface 40U and the lower surface 40L at the joint portion 40A of the wooden beam 40.

[0038] The upper end portion of each bearing pressure transmission rod 60 is covered by the wedge member 80 and is in contact with or close to the lower surface 80L of the wedge member 80. Thereby, during an earthquake, the bearing pressure P is transmitted from the wedge member 80 to the anti-embedding plate 70 via the bearing pressure transmission rod 60.

[0039] A plurality of bearing pressure reinforcing screws 64 for suppressing the embedding of the wedge member 80 into the upper surface 40U of the wooden beam 40 are driven into the upper surface 40U. The upper end portions of the plurality of bearing pressure reinforcing screws 64 are covered by the wedge member 80 and are in contact with or close to the lower surface 80L of the wedge member 80.

[0040] Note that the bearing pressure transmission rod 60 and the bearing pressure reinforcing screw 64 may be provided as necessary and can be omitted as appropriate.

[0041] (Supplementary stiffening plate) As shown in FIG. 2, the stiffening plate 50 is a stiffening member that stiffens (shear panel stiffening) the joint portion 40A of the wooden beam 40 and the two beam portions 40B. Further, the stiffening plate 50 of the present embodiment also functions as a bearing pressure transmitting member that transmits the bearing pressure P between a pair of wedge members 80 and the anti-settling plate 70, which will be described later.

[0042] The stiffening plate 50 is formed of a metal plate such as a steel plate. Further, the stiffening plate 50 is formed in a rectangular shape as a whole, and is arranged with the thickness direction as the beam width direction of the wooden beam 40. This stiffening plate 50 is arranged (accommodated) in a slit-shaped opening 42 formed in the upper surface 40U of the wooden beam 40.

[0043] The stiffening plate 50 is provided across the joint portion 40A and the two beam portions 40B of the wooden beam 40. This stiffening plate 50 has a main body portion 50A that stiffens the joint portion 40A and two side portions 50B that stiffen the beam portions 40B. A plurality of through holes (joint holes) through which a joint pin 54, which will be described later, penetrates are formed in the main body portion 50A and the two side portions 50B.

[0044] The height of the main body portion 50A is the same as the beam depth of the wooden beam 40 (joint portion 40A). Side portions 50B are provided on both sides of this main body portion 50A, respectively. On the other hand, the height of the two side portions 50B is made lower than the beam depth of the wooden beam 40 (beam portions 40B), and a step is formed between the lower ends of these side portions 50B and the lower end of the main body portion 50A.

[0045] Slit-shaped openings 42 are formed on the upper surfaces of the joint portion 40A and the two beam portions 40B of the wooden beam 40. The openings 42 extend in the material axis direction of the wooden beam 40 and are formed at the central portion in the beam width direction on the upper surface 40U of the wooden beam 40.

[0046] The opening 42 penetrates the joint portion 40A of the wooden beam 40 in the beam depth direction. Thereby, the main body portion 50A of the stiffening plate 50 is arranged across the upper surface 40U and the lower surface 40L in the joint portion 40A in a state of being inserted into the opening 42.

[0047] On the other hand, the opening 42 does not penetrate the beam portion 40B in the beam forming direction, and the beam portion 40B has a bottom. As a result, the side portion 50B of the stiffening plate 50 is disposed across the upper surface 40U of the joint portion 40A and the bottom of the opening 42 in a state of being inserted into the opening 42.

[0048] Through holes (joint holes) communicating with the through holes of the stiffening plate 50 are respectively formed in the joint portion 40A and the two beam portions 40B. Joining pins 54 are respectively inserted into these through holes.

[0049] As shown in FIG. 4, the plurality of joining pins 54 are, for example, bar-shaped members such as drift pins, through bolts, and steel bars, and penetrate the stiffening plate 50 in the thickness direction. The stiffening plate 50 is joined to the joint portion 40A and the two beam portions 40B by these joining pins 54. Note that the joining pin 54 is an example of a joining member.

[0050] A plurality of shear reinforcement screws 66 are driven into the upper surface 40U and the lower surface 40L of the wooden beam 40. Note that the shear reinforcement screws 66 may be provided as necessary and can be appropriately omitted.

[0051] (Function) Next, the function of the present embodiment will be described.

[0052] As shown in FIGS. 2, 3, and 4, according to the present embodiment, the wooden beam 40 penetrates through holes 22 formed in the side surface 20S of the joint portion 20A of the wooden column 20. In this wooden beam 40, a stiffening plate 50 is provided in the joint portion 40A disposed in the through holes 22 of the wooden column 20. The stiffening plate 50 is provided with the thickness direction as the beam width direction of the wooden beam 40, and is joined to the joint portion 40A of the wooden beam 40 by a plurality of joining pins 54.

[0053] By strengthening the joint portion 40A of the wooden beam 40 with this stiffening plate 50 (shear panel stiffening), the amount of deformation (shear deformation) of the through joint J between the wooden column 20 and the wooden beam 40 during an earthquake can be efficiently reduced. Therefore, during an earthquake, the amount of deformation (shear deformation) of the structure having the wooden column 20 and the wooden beam 40 can also be efficiently reduced.

[0054] Also, as shown in FIGS. 2 and 4, the stiffening plate 50 is provided across the beam portions 40B provided on both sides of the joint portion 40A, and these beam portions 40B are respectively joined by a plurality of joining pins 54. Thereby, the amount of deformation (shear deformation) of the through joint J between the wooden column 20 and the wooden beam 40 during an earthquake is further reduced.

[0055] Furthermore, as shown in FIG. 1, a plurality of shear reinforcement screws 66 are driven into the upper surface 40U and the lower surface 40L of the joint portion 40A of the wooden beam 40. Thereby, the amount of deformation (shear deformation) of the through joint J between the wooden column 20 and the wooden beam 40 during an earthquake is further reduced.

[0056] Also, a pair of wedge members 80 are fitted into the through holes 22 of the wooden column 20 from both sides. Each wedge member 80 is fitted (driven) into the gap between the inclined surface 30L of the wedge receiving member 30 attached to the upper inner wall surface 22U of the through hole 22 and the upper surface 40U of the wooden beam 40. Thereby, the amount of deformation (shear deformation) of the through joint J between the wooden column 20 and the wooden beam 40 during an earthquake is further reduced.

[0057] Also, as shown in FIG. 2, the stiffening plate 50 extends across the upper surface 40U and the lower surface 40L of the joint portion 40A of the wooden beam 40, and is disposed between the pair of wedge members 80 and the anti - intrusion plate 70. Thereby, during an earthquake, the support pressure is transmitted from the pair of wedge members 80 to the anti - intrusion plate 70 through the stiffening plate 50. Therefore, during an earthquake, the intrusion of the wedge member 80 into the upper surface 40U of the wooden beam 40 is suppressed.

[0058] Also, as shown in FIG. 1, a plurality of bearing pressure transmission rods 60 are provided at the joint portion 40A of the wooden beam 40. The plurality of bearing pressure transmission rods 60 are arranged between the wedge members 80 and the anti-embedding plate 70. Thereby, during an earthquake, the bearing pressure P is transmitted from the pair of wedge members 80 to the anti-embedding plate 70 via the plurality of bearing pressure transmission rods 60. Therefore, during an earthquake, the embedding of the wedge member 80 into the upper surface 40U of the wooden beam 40 is further suppressed.

[0059] Furthermore, a plurality of bearing pressure reinforcing screws 64 are driven into the upper surface 40U of the wooden beam 40. The upper end portions of the plurality of bearing pressure reinforcing screws 64 are covered by the wedge members 80. By these bearing pressure reinforcing screws 64, during an earthquake, by receiving the wedge members 80, the embedding of the wedge members 80 into the upper surface 40U of the wooden beam 40 is further suppressed.

[0060] Furthermore, an anti-embedding plate 70 is attached to the lower surface 40L of the joint portion 40A of the wooden beam 40. Thereby, during an earthquake, the embedding of the lower inner wall surface 22L of the wooden column 20 into the lower surface 40L of the joint portion 40A of the wooden beam 40 is suppressed.

[0061] By suppressing the embedding of the wedge members 80 and the lower inner wall surface 22L of the wooden column 20 into the upper surface 40U and the lower surface 40L of the joint portion 40A of the wooden beam 40 in this way, the deformation amount (shearing deformation amount) of the through joint portion J between the wooden column 20 and the wooden beam 40 during an earthquake is further reduced.

[0062] Furthermore, the plurality of joining pins 54 penetrate the stiffening plate 50 in the thickness direction and join the stiffening plate 50 to the joint portion 40A and the beam portion 40B of the wooden beam 40. By these joining pins 54, the stiffening plate 50 can be easily joined to the joint portion 40A and the beam portion 40B of the wooden beam 40.

[0063] (Modification example) Next, a modification example of the above embodiment will be described.

[0064] In the above-described embodiment, the stiffening plate 50 extends across the joint portion 40A and the beam portion 40B of the wooden beam 40. However, the stiffening plate 50 may be provided at least at the joint portion 40A of the wooden beam 40. That is, the stiffening plate 50 only needs to have at least the main body portion 50A, and the two side portions 50B can be omitted.

[0065] Also, in the above-described embodiment, the main body portion 50A of the stiffening plate 50 extends across the upper surface 40U and the lower surface 40L at the joint portion 40A of the wooden beam 40. However, the main body portion 50A of the stiffening plate 50 does not extend across the upper surface 40U and the lower surface 40L at the joint portion 40A of the wooden beam 40, and may be disposed (accommodated) in the bottomed opening 42, for example, in the same manner as the side portion 50B. In this case, the main body portion 50A of the stiffening plate 50 functions as a stiffening member for stiffening (shear panel stiffening) the joint portion 40A of the wooden beam 40 and also functions as a bearing pressure reinforcing member for receiving the bearing pressure P of the pair of wedge members 80.

[0066] Also, the main body portion 50A of the stiffening plate 50 may be provided, for example, at the intermediate portion in the beam forming direction of the joint portion 40A of the wooden beam 40. In this case, the main body portion 50A of the stiffening plate 50 functions as a stiffening member for stiffening (shear panel stiffening) the joint portion 40A of the wooden beam 40.

[0067] Also, in the above-described embodiment, the joining member for joining the stiffening plate 50 and the wooden beam 40 is the joining pin 54. However, the joining member is not limited to the joining pin 54, and may be, for example, metal fittings, an adhesive, or the like. Also, the arrangement and number of the joining members can be changed as appropriate.

[0068] Also, in the above-described embodiment, one stiffening plate 50 is provided on the wooden beam 40. However, a plurality of stiffening plates 50 may be provided on the wooden beam 40 in the beam width direction or the beam forming direction.

[0069] Also, in the above-described embodiment, the wedge receiving member 30 is attached to the upper inner wall surface 22U of the through hole 22 of the wooden column 20. However, the wedge receiving member 30 may be provided as necessary and can be omitted as appropriate.

[0070] In addition, in the above-described embodiment, the anti-sag plate 70 is provided on the lower surface 40L of the joint portion 40A of the wooden beam 40. However, the anti-sag plate 70 may be provided as necessary and can be appropriately omitted.

[0071] In addition, in the above-described embodiment, the wedge member 80 is disposed between the upper inner wall surface 22U of the through hole 22 of the wooden column 20 and the upper surface 40U of the wooden beam 40. Between the upper inner wall surface 22U of the through hole 22 of the wooden column 20 and the upper surface 40U of the wooden beam 40, not limited to the wedge member 80, for example, a spacer may be disposed or a filler may be filled.

[0072] As described above, one embodiment of the present invention has been described. However, the present invention is not limited to such an embodiment, and one embodiment and various modifications may be appropriately combined and used, and of course, the present invention can be implemented in various modes without departing from the gist of the present invention.

Explanation of Reference Numerals

[0073] 20 Wooden column 22 Through hole 22L Lower inner wall surface 22U Upper inner wall surface 40 Wooden beam 40A Joint portion 40B Beam portion 40L Lower surface 40U Upper surface 50 Reinforcing plate 54 Joining pin (joining member)

Claims

1. A wooden column, a wooden beam passing through a through-hole formed in the wooden column, and a supplementary stiffening plate provided in a joint portion of the wooden beam disposed in the through-hole with a thickness direction being a beam width direction of the wooden beam and joined to the wooden beam. A through-joint structure of a wooden column and beam comprising the above.

2. The wooden beam has the joint portion and beam portions respectively provided on both sides of the joint portion. The supplementary stiffening plate is provided across the joint portion and the beam portions on both sides. The through-joint structure of a wooden column and beam according to Claim 1.

3. The supplementary stiffening plate extends across an upper surface and a lower surface of the joint portion of the wooden beam. The through-joint structure of a wooden column and beam according to Claim 1.

4. Comprising a plurality of joining members passing through the supplementary stiffening plate in a thickness direction and joining the supplementary stiffening plate and the joint portion of the wooden beam. The through-joint structure of a wooden column and beam according to Claim 1.

5. Comprising a wedge member disposed between an upper surface of the wooden beam and an upper inner wall surface of the through-hole. The through-joint structure of a wooden column and beam according to any one of Claims 1 to 4.

Images