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; a wooden beam that penetrates an open hole formed on the wooden column; and a plurality of joint members that are arranged along a beam width direction of the wooden beam to join a connection part of the wooden beam arranged in the open hole to the wooden column.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).

[0003] Also, a tenon joint structure is known in which a tenon projection of a column is inserted into a mortise hole of a base, and a commissure obtained by rubber-coating a metal bar is driven into through holes formed in the tenon projection and the mortise hole, respectively (see, for example, Patent Document 3).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, at the through-joint portion of a wooden column and a wooden beam, the amount of deformation during an earthquake tends to be large, and the amount of deformation (shearing deformation amount) of a structure having these wooden columns and wooden beams may also become large.

[0006] In consideration of the above facts, an object of the present invention is to reduce the amount of deformation of a structure having through-jointed wooden columns and wooden beams during an earthquake.

Means for Solving the Problems

[0007] 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 plurality of joining members arranged along the beam width direction of the wooden beam and joining the joint portion of the wooden beam disposed in the through-hole and the wooden column.

[0008] According to the through-joint structure of a wooden column and beam according to claim 1, the wooden beam passes through a through-hole formed in the wooden column. Further, the plurality of joining members are arranged along the beam width direction of the wooden beam. By these joining members, the joint portion of the wooden beam disposed in the through-hole of the wooden column and the wooden column are joined.

[0009] By joining the joint portion of the wooden beam and the wooden column with such a plurality of joining members in this way, 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.

[0010] The through-joint structure of a wooden column and beam according to claim 2 is the through-joint structure of a wooden column and beam according to claim 1, wherein the joining member penetrates the joint portion in the beam width direction.

[0011] According to the through-joint structure of a wooden column and beam according to claim 2, the joining member penetrates the joint portion of the wooden beam in the beam width direction. Thereby, the joint portion of the wooden beam and the wooden column can be easily joined by the joining member.

[0012] The through-joint structure of a wooden column and beam according to claim 3 is the through-joint structure of a wooden column and beam according to claim 1 or claim 2, and includes a wedge member disposed between the upper surface of the wooden beam and the upper inner wall surface of the through-hole.

[0013] According to the through-joint structure of the wooden column and beam according to claim 3, 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. Thereby, 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.

Effect of the Invention

[0014] 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

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Mode for Carrying Out the Invention

[0016] (Through-Joint Structure of Wooden Column and Beam) In FIG. 1, a wooden column 20 and a wooden beam 40 to which the through-joint structure of the wooden column and beam according to the present 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.

[0017] (Wooden Column) The wooden column 20 is formed in a rectangular cross-section (prismatic shape). Further, as shown in FIGS. 2 and 3, 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 this 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). Further, the cross-sectional shape of the through-hole 22 is a rectangular shape corresponding to the cross-sectional shape of the wooden beam 40.

[0018] As shown in FIG. 4, a plurality of joining holes 24 into which a joining pin 50 described later is inserted are respectively formed in side wall portions 20A1 on both sides of the through-hole 22 in the joint portion 20A of the wooden column 20. The plurality of joining holes 24 are circular through-holes that penetrate a pair of side wall portions 20A1 facing each other in the beam width direction of the wooden beam 40 in the beam width direction (the direction intersecting the through-hole 22). Further, the plurality of joining holes 24 formed in one side wall portion 20A1 and the plurality of joining holes 24 formed in the other side wall portion 20A1 are arranged to face each other.

[0019] (Wedge receiving member) As shown in FIG. 1, 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.

[0020] The upper surface 30U of the wedge receiving member 30 is a flat surface (horizontal surface). 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.

[0021] The lower surface of the wedge receiving member 30 is formed in a substantially triangular shape that is convex 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.

[0022] (Wooden beam) As shown in FIG. 2, the wooden beam 40 is formed in a rectangular cross-sectional shape. Further, the wooden beam 40 passes 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.

[0023] As shown in FIGS. 1 and 3, 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 portions 40B are arranged outside the through-hole 22 of the wooden column 20.

[0024] A plurality of joint holes 44 through which a plurality of joint pins 50 are respectively passed are formed in the joint portion 40A of the wooden beam 40. The plurality of joint holes 44 are circular through-holes penetrating the joint portion 40A of the wooden beam 40 in the beam width direction. Further, the plurality of joint holes 44 communicate with a plurality of joint holes 24 formed in the side wall portions 20A1 on both sides of the wooden column 20 in a state where the joint portion 40A of the wooden beam 40 is arranged within the through-hole 22 of the wooden column 20. The joint pins 50 are inserted into these joint holes 24, 44.

[0025] (Joint pin) As shown in FIGS. 2, 3, and 4, the plurality of joint pins 50 are, for example, rod-shaped members such as drift pins, through bolts, and steel bars. Further, the plurality of joint pins 50 are arranged along the beam width direction of the wooden beam 40 and are inserted into the joint holes 24, 44 formed in the joint portions 20A, 40A of the wooden column 20 and the wooden beam 40. The joint portions 20A, 40A of the wooden column 20 and the wooden beam 40 are joined by these joint pins 50. Note that the joint pin 50 is an example of a joining member.

[0026] 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 omitted as appropriate.

[0027] (Anti-embedding plate) As shown in Fig. 1, an anti-infiltration plate 70 is attached to the lower surface 40L of the joint portion 40A of the wooden beam 40. The anti-infiltration plate 70 is a member that prevents the lower inner wall surface 20L of the wooden column 20 from infiltrating into the lower surface 40L of the joint portion 40A of the wooden beam 40.

[0028] The anti-infiltration 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 on the lower surface 40L of the joint portion 40A of the wooden beam 40. Through this anti-infiltration 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.

[0029] (Wedge member) A pair of wedge members 80 is a fixing member that fixes 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.

[0030] Specifically, the pair of wedge members 80 is made of, for example, metal, and is 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.

[0031] 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 on the inclined surface 30L of the wedge receiving member 30.

[0032] Here, as shown in Fig. 5, a pair of wedge members 80 is fitted (driven) 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.

[0033] (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.

[0034] 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 intrusion prevention 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.

[0035] The plurality of bearing pressure transmission rods 60 are arranged on both sides in the material axis 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 arranged at intervals in the beam width direction of the wooden beam 40.

[0036] As shown in FIG. 1, each bearing pressure transmission rod 60 is arranged in a circular through hole 62 that penetrates the joint portion 40A of the wooden beam 40 in the beam forming direction, and the lower end portion thereof is supported (placed) by an intrusion prevention 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.

[0037] 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 intrusion prevention plate 70 via the bearing pressure transmission rod 60.

[0038] On the upper surface 40U of the wooden beam 40, a plurality of bearing reinforcement screws 64 for suppressing the indentation of the wedge member 80 into the upper surface 40U are driven in. The upper end portions of the plurality of bearing reinforcement 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.

[0039] Note that the bearing transmission rod 60 and the bearing reinforcement screws 64 may be provided as necessary and can be omitted as appropriate.

[0040] (Function) Next, the function of this embodiment will be described.

[0041] As shown in FIGS. 1, 2, and 3, according to this embodiment, the wooden beam 40 penetrates through the through hole 22 formed in the wooden column 20. Further, the plurality of joining pins 50 are arranged along the beam width direction of the wooden beam 40. By these joining pins 50, the joint portion 40A of the wooden beam 40 disposed in the through hole 22 of the wooden column 20 and the joint portion 20A of the wooden column 20 are joined.

[0042] By joining the joint portions 20A and 40A of the wooden column 20 and the wooden beam 40 with the plurality of joining pins 50 in this way, the amount of deformation (shearing deformation amount) of the through joint portion J between the wooden column 20 and the wooden beam 40 during an earthquake can be efficiently reduced. Therefore, also during an earthquake, the amount of deformation (shearing deformation amount) of the structure having the wooden column 20 and the wooden beam 40 can be efficiently reduced.

[0043] Also, the plurality of joining pins 50 penetrate through the joint portion 40A of the wooden beam 40 in the beam width direction. Thereby, the joint portions 20A and 40A of the wooden column 20 and the wooden beam 40 can be easily joined by the plurality of joining pins 50.

[0044] In addition, 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 deformation amount (shear deformation amount) of the through joint J between the wooden column 20 and the wooden beam 40 during an earthquake is further reduced.

[0045] In addition, 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 disposed between the wedge member 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.

[0046] 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 member 80. By these bearing pressure reinforcing screws 64, during an earthquake, by receiving the wedge member 80, the embedding of the wedge member 80 into the upper surface 40U of the wooden beam 40 is further suppressed.

[0047] 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.

[0048] By suppressing the embedding of the wedge member 80 and the lower inner wall surface 22L of the wooden column 20 into the upper surface 40U and the lower surface 40L at the joint portion 40A of the wooden beam 40 in this way, the deformation amount (shear deformation amount) of the through joint J between the wooden column 20 and the wooden beam 40 during an earthquake is further reduced.

[0049] (Modified Example) Next, a modified example of the above embodiment will be described.

[0050] In the above embodiment, the joining member for joining the joint portions 20A and 40A of the wooden column 20 and the wooden beam 40 is the joining pin 50. However, the joining member is not limited to the joining pin 50, and for example, metal fittings, steel shapes, etc. may also be used. Further, the arrangement and number of the joining members can be changed as appropriate.

[0051] Also, in the above 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.

[0052] Also, in the above embodiment, the intrusion prevention plate 70 is provided on the lower surface 40L of the joint portion 40A of the wooden beam 40. However, the intrusion prevention plate 70 may be provided as necessary and can be omitted as appropriate.

[0053] Also, in the above 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. However, 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 only the wedge member 80 but also, for example, a spacer may be disposed, or a filler may be filled.

[0054] As described above, although one embodiment of the present invention has been described, the present invention is not limited to such an embodiment, and one embodiment and various modifications may be used in appropriate combination, and it goes without saying that the present invention can be implemented in various modes without departing from the gist of the present invention.

Explanation of Reference Numerals

[0055] 20 Wooden column 22 Through hole 40 Wooden beam 40A Joint portion 50 Joining pin (joining member) 80 Wedge member

Claims

1. A wooden column, a wooden beam passing through a through-hole formed in the wooden column, a plurality of joining members arranged along the beam width direction of the wooden beam and joining the joint portion of the wooden beam disposed in the through-hole and the wooden column, A through-joint structure of a wooden column and beam comprising the above components.

2. The joining member penetrates the joint portion in the beam width direction, The through-joint structure of a wooden column and beam according to Claim 1.

3. Comprising a wedge member disposed between the upper surface of the wooden beam and the upper inner wall surface of the through-hole, The through-joint structure of a wooden column and beam according to Claim 1 or Claim 2.

Images