Column base junction structure and column beam junction structure

Abstract

To provide a column base joint structure that can improve compressive strength against compressive force acting on a column.SOLUTION: A column base joint structure 100, which joins a lower end part 41 of a column 40 with the foundation 10, includes an anchor bolt 20, a base 30 that receives the column 40, a washer 70 that receives compressive force of the column 40, and a connecting hardware 50 attached to the anchor bolt 20; the anchor bolt 20 protrudes upward beyond the washer 70 and the base 30, the connecting hardware 50 is fixed to the anchor bolt 20 and embedded in a groove 45 on the column 40, a drift pin 60 goes through a through hole in the lower end of the column 40 and a through hole in the connecting hardware 50 to fix the connecting hardware 50 to the lower end 41 of the column 40, the column 40 is fixed to the anchor bolt 20 via the drift pin 60 and the connecting hardware 50, and the washer 70 receives the connecting hardware 50 from below.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a column base joint structure and a column-beam joint structure. [Background technology]

[0002] In wooden buildings constructed using the wooden frame construction method, the wooden shaft members that form the pillars, beams, foundations, etc. are joined together using metal fittings to tightly fasten the members together, thereby improving earthquake resistance, etc.

[0003] A structure has been proposed for joining a column to a foundation in which a base is placed on the foundation, an anchor bolt protruding upward from the foundation passes through the base and protrudes upward, a connecting metal is fastened to the upper end of the anchor bolt, the lower end of the column is connected to the connecting metal, and the column is placed on the base (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2019-19621 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the technology described in Patent Document 1, the columns are placed on the foundation, so the compressive force acting on the columns acts on the upper surface of the foundation. Therefore, there is a risk that the columns will sink into the foundation due to the compressive force acting on the columns. Therefore, in the technology described in Patent Document 1, the load-bearing capacity against the compressive force acting on the columns is low.

[0006] An object of the present invention is to provide a column base joint structure and a column beam joint structure that can improve the compressive strength against compressive forces acting on the columns. [Means for solving the problem]

[0007] One aspect of the column base joint structure according to the present invention is as follows: A column base joint structure that joins the lower end of a wooden column to a foundation, An anchor bolt embedded in the foundation and protruding upward; a base that is placed on the foundation, has a through hole through which the anchor bolt is inserted, extends horizontally, and supports the wooden pole; A compression force receiving member attached to the anchor bolt and receiving the compression force of the wooden pole; a connecting hardware that is attached to the anchor bolt at a position above the compression force receiving member and has a through hole through which a rod-shaped fixing device is inserted, A groove into which the connecting metal fitting is embedded and a through hole into which the rod-shaped fixing tool is inserted are formed at the lower end of the wooden pole, The anchor bolt protrudes above the upper surface of the compression force receiving member and the base, The connecting metal fitting is fixed to the upper end of the anchor bolt and embedded in the groove of the wooden pole, The rod-shaped fixing device is inserted through the through hole of the lower end of the wooden pole and the through hole of the connecting metal fitting to fix the connecting metal fitting and the lower end of the wooden pole, The wooden pole is fixed to the anchor bolt via the rod-shaped fixing device and the connecting metal fitting, The compression force receiving member is characterized in that it receives the connecting metal from below.

[0008] According to this aspect, the tensile force acting on the wooden column is transmitted to the connecting metal via the rod-shaped fixing device, and the tensile force transmitted to the connecting metal is transmitted to the foundation via the anchor bolt. According to this aspect, the compressive force acting on the wooden column is transmitted to the foundation via the foundation on which the column is placed. Furthermore, according to this aspect, a part of the compressive force acting on the wooden column is transmitted to the connecting metal via the rod-shaped fixing device, and the compressive force transmitted to the connecting metal is transmitted to the compression force receiving member fixed to the anchor bolt. The compressive force transmitted to the compression force receiving member is transmitted to the foundation via the anchor bolt. In this way, the compressive force acting on the wooden column to the foundation can be reduced by transmitting the compressive force acting on the wooden column to the anchor bolt via the compression force receiving member. As a result, the compressive strength of the column base joint structure can be improved.

[0009] In another aspect of the present invention, The compression force receiving member is A cylindrical portion having an internal thread formed therein and attached to the anchor bolt; a washer portion extending radially outward from the cylindrical portion, The washer portion is characterized in that it receives the connecting metal from below.

[0010] According to this aspect, the washer portion protrudes radially outward from the tubular portion, so that the washer portion and the connecting hardware can come into contact with each other. According to this aspect, the compressive force acting on the wooden column can be transmitted from the connecting hardware to the washer portion, and then transmitted to the anchor bolt via the washer portion. According to this aspect, the tubular portion has an internal thread, so that the compressive force receiving member can be easily attached to the anchor bolt. Furthermore, according to this aspect, the force received by the washer portion can be reliably transmitted to the anchor bolt.

[0011] In another aspect of the present invention, Further comprising a metal plate disposed between the lower surface of the wooden pole and the upper surface of the base; The compression force receiving member is characterized in that it receives the connecting metal from below via the metal plate.

[0012] According to this aspect, the compressive force acting on the wooden column can be received by the metal plate arranged between the lower surface of the wooden column and the upper surface of the foundation. According to this aspect, the compressive force acting on the wooden column can be transmitted to the foundation via the metal plate. The compressive force transmitted to the foundation is transmitted to the foundation. Also, according to this aspect, a part of the compressive force acting on the wooden column is transmitted to the connecting metal via the rod-shaped fixing device, and the compressive force transmitted to the connecting metal is transmitted to the metal plate arranged between the lower surface of the wooden column and the upper surface of the foundation. The force transmitted to the metal plate is transmitted to the foundation and the compression force receiving member. The compression force transmitted to the compression force receiving member is transmitted to the foundation via the anchor bolt. In this way, the compressive force acting on the wooden column is transmitted to the anchor bolt via the compression force receiving member, thereby reducing the compressive force acting from the wooden column to the foundation. As a result, the compressive strength of the column base joint structure can be improved.

[0013] One aspect of the column-beam joint structure according to the present invention is as follows: A column-beam joint structure for joining a lower end of a wooden column to a wooden beam, A metal plate having a through hole and disposed on a lower surface of the wooden beam; A connecting bolt that passes through the through hole of the metal plate and the through hole of the wooden beam and protrudes above the wooden beam; A compression force receiving member attached to the connecting bolt and receiving a compression force of the wooden pole; a connecting metal fitting attached to the connecting bolt at a position above the compression force receiving member and having a through hole through which a rod-shaped fastener is inserted; a nut disposed on the lower surface of the metal plate and attached to a lower end of the connecting bolt, A groove into which the connecting metal fitting is embedded and a through hole into which the rod-shaped fixing tool is inserted are formed at the lower end of the wooden pole, The connecting bolt protrudes above the wooden beam, The connecting metal fitting is fixed to the upper end of the connecting bolt and embedded in the groove of the wooden pole, The rod-shaped fastener is inserted through the through hole of the lower end of the wooden pole and the through hole of the connecting metal fitting to fix the connecting metal fitting and the lower end of the wooden pole, The wooden pole is fixed to the connecting bolt via the rod-shaped fastener and the connecting metal fitting, The nut is fastened to the lower end of the connecting bolt, and the connecting bolt is fixed to the wooden beam. The compression force receiving member is characterized in that it receives the connecting metal from below.

[0014] According to this aspect, the tensile force acting on the wooden column is transmitted to the connecting hardware via a rod-shaped fastener, and the tensile force transmitted to the connecting hardware is transmitted to the wooden beam via the connecting bolt. According to this aspect, the compressive force acting on the wooden column is transmitted to the wooden beam via the lower surface of the wooden column. Furthermore, according to this aspect, a part of the compressive force acting on the wooden column is transmitted to the connecting hardware via a rod-shaped fastener, and the compressive force transmitted to the connecting hardware is transmitted to a compression force receiving member fixed to the connecting bolt. The compressive force transmitted to the compression force receiving member is transmitted to the wooden beam via the connecting bolt. In this way, the compressive force acting on the wooden column is transmitted to the connecting bolt via the compression force receiving member, thereby reducing the compressive force acting from the wooden column to the upper surface of the wooden beam. As a result, the compressive strength of the column base joint structure can be improved.

[0015] One aspect of the column-beam joint structure according to the present invention is as follows: A column-beam joint structure for joining an upper end of a wooden column to a wooden beam, A metal plate having a through hole and disposed on an upper surface of the wooden beam; A connecting bolt that passes through the through hole of the metal plate and the through hole of the wooden beam and protrudes downward from the wooden beam; A compression force receiving member attached to the connecting bolt and receiving a compression force of the wooden pole; a connecting metal fitting attached to the connecting bolt at a position lower than the compression force receiving member and having a through hole through which a rod-shaped fastener is inserted; a nut disposed on the upper surface of the metal plate and attached to an upper end of the connecting bolt, A groove into which the connecting metal fitting is embedded and a through hole into which the rod-shaped fixing tool is inserted are formed at the upper end of the wooden pole, The connecting bolt protrudes downward from the wooden beam, The connecting metal fitting is fixed to the lower end of the connecting bolt and embedded in the groove of the wooden pole, The rod-shaped fixing device is inserted into the through hole of the upper end of the wooden pole and the through hole of the connecting metal fitting, and fixes the connecting metal fitting and the upper end of the wooden pole; The wooden pole is fixed to the connecting bolt via the rod-shaped fastener and the connecting metal fitting, The nut is fastened to the upper end of the connecting bolt, and the connecting bolt is fixed to the wooden beam. The compression force receiving member is characterized in that it receives the connecting metal from above.

[0016] According to this aspect, the tensile force acting on the wooden column is transmitted to the connecting hardware via the rod-shaped fastener, and the tensile force transmitted to the connecting hardware is transmitted to the wooden beam via the connecting bolt. According to this aspect, the compressive force acting on the wooden column is transmitted to the wooden beam via the upper surface of the wooden column. Furthermore, according to this aspect, a part of the compressive force acting on the wooden column is transmitted to the connecting hardware via the rod-shaped fastener, and the compressive force transmitted to the connecting hardware is transmitted to a compression force receiving member fixed to the connecting bolt. The compressive force transmitted to the compression force receiving member is transmitted to the wooden beam via the connecting bolt. In this way, the compressive force acting on the wooden column is transmitted to the connecting bolt via the compression force receiving member, thereby reducing the compressive force acting from the wooden column to the lower surface of the wooden beam. As a result, the compressive strength of the column base joint structure can be improved.

[0017] One aspect of the column-beam joint structure according to the present invention is as follows: A column-beam joint structure that joins an upper end of a first wooden column to a wooden beam and a lower end of a second wooden column, A connecting bolt that passes through a through hole of the wooden beam and protrudes above and below the wooden beam; A first compression force receiving member attached to the connecting bolt and receiving the compression force of the first wooden pole; A second compression force receiving member attached to the connecting bolt and receiving the compression force of the second wooden pole; a first connecting metal member attached to the connecting bolt at a position lower than the first compression force receiving member and having a through hole through which a first rod-shaped fastener is inserted; a second connection metal member attached to the connecting bolt at a position above the second compression force receiving member and having a through hole through which a second rod-shaped fastener is inserted, The upper end of the first wooden pole is formed with a groove into which the first connecting metal is embedded and a through hole into which the first rod-shaped fixing device is inserted, The first connecting hardware is fixed to the lower end of the connecting bolt and embedded in the groove of the first wooden pole, The first rod-shaped fastener is inserted through the through hole of the upper end of the first wooden pole and the through hole of the first connecting metal, and fixes the first connecting metal and the upper end of the first wooden pole; The first wooden pole is fixed to the connecting bolt via the first rod-shaped fastener and the first connecting metal fitting, The first compression force receiving member receives the first connecting metal from above, The lower end of the second wooden pole is formed with a groove into which the second connecting metal is embedded and a through hole into which the second rod-shaped fixing device is inserted, The second connecting metal fitting is fixed to the upper end of the connecting bolt and embedded in the groove of the second wooden pole, The second rod-shaped fastener is inserted through the through hole of the lower end of the second wooden pole and the through hole of the second connecting metal, and fixes the second connecting metal and the lower end of the second wooden pole; The second wooden pole is fixed to the connecting bolt via the second rod-shaped fastener and the second connecting metal fitting, The second compression force receiving member is characterized by receiving the second connecting metal from below.

[0018] According to this aspect, the tensile force acting on the first wooden column is transmitted to the first connecting metal via the first rod-shaped fastener, and the tensile force transmitted to the first connecting metal is transmitted to the second wooden column via the connecting bolt. According to this aspect, the compressive force acting on the first wooden column is transmitted to the wooden beam via the upper surface of the first wooden column. Furthermore, according to this aspect, a part of the compressive force acting on the first wooden column is transmitted to the first connecting metal via the first rod-shaped fastener, and the compressive force transmitted to the first connecting metal is transmitted to the first compression force receiving member fixed to the connecting bolt. The compressive force transmitted to the first compression force receiving member is transmitted to the wooden beam via the connecting bolt. In this way, the compressive force acting on the first wooden column to the lower surface of the wooden beam from the first wooden column can be reduced by transmitting the compressive force acting on the first wooden column to the connecting bolt via the first compression force receiving member. As a result, the compressive strength of the column base joint structure can be improved.

[0019] According to this aspect, the tensile force acting on the second wooden column is transmitted to the second connecting metal via the second rod-shaped fastener, and the tensile force transmitted to the second connecting metal is transmitted to the first wooden column via the connecting bolt. According to this aspect, the compressive force acting on the second wooden column is transmitted to the wooden beam via the lower surface of the second wooden column. Furthermore, according to this aspect, a part of the compressive force acting on the second wooden column is transmitted to the second connecting metal via the second rod-shaped fastener, and the compressive force transmitted to the second connecting metal is transmitted to the second compression force receiving member fixed to the connecting bolt. The compressive force transmitted to the second compression force receiving member is transmitted to the wooden beam via the connecting bolt. In this way, the compressive force acting on the second wooden column is transmitted to the connecting bolt via the second compression force receiving member, thereby reducing the compressive force acting from the second wooden column to the upper surface of the wooden beam. As a result, the compressive strength of the column base joint structure can be improved. Effect of the Invention

[0020] As can be understood from the above description, according to the present invention, it is possible to provide a column base joint structure and a column-beam joint structure that are capable of improving the compressive strength against compressive forces acting on the columns. [Brief description of the drawings]

[0021] [Figure 1] FIG. 1 is a perspective view showing a column base joint structure according to a first embodiment. [Diagram 2] FIG. 2 is a partial cross-sectional view showing the column base joint structure according to the first embodiment, illustrating a cross-section along the longitudinal direction of the base. [Diagram 3] FIG. 2 is a cross-sectional view showing the column base joint structure according to the first embodiment, illustrating a cross section intersecting the longitudinal direction of the base. [Figure 4] FIG. 2 is a perspective view showing a washer from above. [Diagram 5] FIG. [Figure 6] FIG. 13 is a diagram showing the transmission path of a tensile force acting on a pillar. [Figure 7] FIG. 1 is a diagram showing the transmission path of a compressive force acting on a column. [Figure 8] A partial cross-sectional view showing the column base joint structure in the second embodiment, showing a cross-section along the longitudinal direction of the base. [Figure 9] FIG. 1 is a diagram showing the transmission path of a compressive force acting on a column. [Figure 10] A cross-sectional view showing the column base joint structure in the third embodiment, showing a cross-section along the longitudinal direction of the base. [Figure 11] A partial cross-sectional view showing a column base joint structure in accordance with a third embodiment, showing a cross section intersecting with the longitudinal direction of the base. [Figure 12] FIG. 13 is a partial cross-sectional view showing a beam-column joint structure according to a fourth embodiment, illustrating a cross-section along the longitudinal direction of a beam. [Figure 13] FIG. 13 is a partial cross-sectional view showing a column-beam joint structure according to a fourth embodiment, illustrating a cross section intersecting the longitudinal direction of the beam. [Figure 14] FIG. 13 is a diagram showing the transmission path of a tensile force acting on a pillar. [Figure 15] FIG. 13 is a diagram showing the transmission path of a tensile force acting on a pillar. [Figure 16] FIG. 13 is a partial cross-sectional view showing a beam-column joint structure according to a fifth embodiment, illustrating a cross section along the longitudinal direction of a beam. [Figure 17] FIG. 13 is a partial cross-sectional view showing a column-beam joint structure according to a fifth embodiment, illustrating a cross section intersecting the longitudinal direction of the beam. [Figure 18] FIG. 13 is a partial cross-sectional view showing a column-beam joint structure according to a sixth embodiment, illustrating a cross section along the longitudinal direction of a beam. [Figure 19] FIG. 13 is a partial cross-sectional view showing a beam-column joint structure according to a sixth embodiment, illustrating a cross section intersecting the longitudinal direction of the beam. [Figure 20] FIG. 13 is a partial cross-sectional view showing a beam-column joint structure according to the seventh embodiment, illustrating a cross-section along the longitudinal direction of the beam. [Figure 21] FIG. 13 is a partial cross-sectional view showing a beam-column joint structure according to an eighth embodiment, illustrating a cross section along the longitudinal direction of a beam. [Figure 22] FIG. 13 is a partial cross-sectional view showing a beam-column joint structure according to an eighth embodiment, illustrating a cross section intersecting the longitudinal direction of the beam. [Diagram 23] FIG. 13 is a partial cross-sectional view showing a beam-column joint structure according to a ninth embodiment, illustrating a cross-section along the longitudinal direction of a beam. [Figure 24] FIG. 13 is a partial cross-sectional view showing a beam-column joint structure according to a ninth embodiment, illustrating a cross section intersecting the longitudinal direction of the beam. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Hereinafter, a column base joint structure and a column beam joint structure according to an embodiment will be described with reference to the accompanying drawings. In this specification and the drawings, substantially identical components are designated by the same reference numerals to avoid redundant description.

[0023] [Column base joint structure 100 according to the first embodiment] A column base joint structure 100 according to the first embodiment will be described with reference to Figs. 1 to 3. Fig. 1 is a perspective view showing the column base joint structure 100 according to the first embodiment. Fig. 2 is a partial cross-sectional view showing the column base joint structure 100 according to the first embodiment, showing a cross-section along the longitudinal direction of the base 30. Fig. 3 is a cross-sectional view showing the column base joint structure 100 according to the first embodiment, showing a cross-section intersecting with the longitudinal direction of the base 30. In each figure, the X-axis direction, the Y-axis direction, and the Z-axis direction, which are orthogonal to each other, are illustrated. The X-axis direction and the Y-axis direction are along the horizontal direction. The Z-axis direction is along the vertical direction. The longitudinal direction of the base 30 is along the X-axis direction. Fig. 2 shows a part of a cross-section along the XZ plane. Fig. 3 shows a cross-section along the YZ plane.

[0024] The column base joint structure 100 is a part of a building, and is a column base joint structure that joins a lower end portion 41 of a column 40 to a foundation 10. The column base joint structure 100 includes the foundation 10, an anchor bolt 20, a base 30, and a column 40.

[0025] [Basic 10] The foundation 10 is a foundation (strip foundation) made of reinforced concrete. The foundation 10 has a predetermined width in the Y-axis direction and extends in the X-axis direction. The foundation 10 supports a base 30. A base packing 35 is laid on an upper surface 11 of the foundation 10. The base packing 35 is disposed between the foundation 10 and the base 30.

[0026] [Anchor Bolt 20] An anchor bolt 20 is buried in the foundation 10. The anchor bolt 20 protrudes upward from an upper surface 11 of the foundation 10. The anchor bolt 20 penetrates a base 30 in the Z-axis direction. The anchor bolt 20 protrudes upward from an upper surface 32 of the base 30. An upper end of the anchor bolt 20 is disposed above the base 30.

[0027] [Base 30] The base 30 is placed on the foundation 10 and extends in the X-axis direction (horizontal direction). The base 30 is supported by the foundation 10. The base 30 is, for example, a wooden base. The base 30 may be a wooden member. The wooden member is formed by laminating multiple layers, and the sawn boards included in these layers are arranged so that the fiber directions of the sawn boards in adjacent layers are perpendicular to each other. The multiple layers are bonded to each other. The wooden member may be CLT or other wooden members such as LVL. The wooden member may be laminated wood, for example, sawn lumber or solid wood.

[0028] A through hole 33 penetrating in the Z-axis direction is formed in the base 30. The anchor bolt 20 passes through the through hole 33. The anchor bolt 20 and the through hole 33 are disposed at a position overlapping with the pillar 40 when viewed in the Z-axis direction.

[0029] The base 30 has an upper surface 32 and a lower surface 31 that face each other in the Z-axis direction. The base 30 is a base that receives the pillar 40. The pillar 40 is placed on the upper surface 32 of the base 30.

[0030] [Column 40] The pillar 40 is a wooden pillar. The wooden pillar is formed by stacking a number of layers, and the planks contained in these layers are arranged so that the fiber directions of the planks in the adjacent layers are perpendicular to each other. The multiple layers are bonded to each other. The wooden pillar may be CLT (Cross Laminated Timber) or other wooden members such as LVL (Laminated Veneer Lumber). The wooden member may be laminated wood, for example, sawn lumber or solid wood.

[0031] The pillar 40 extends in the Z-axis direction, and the lower end 41 of the pillar 40 is placed on the upper surface 32 of the base 30. The lower surface 43 of the pillar 40 and the upper surface 32 of the base 30 face each other in the Z-axis direction and abut against each other. Note that a metal plate 55 may be disposed between the lower surface 43 of the pillar 40 and the upper surface 32 of the base 30, as described later.

[0032] [Connecting hardware 50] The column base joint structure 100 comprises a connection hardware 50 and a drift pin 60 that connect the anchor bolt 20 and the column 40. The connection hardware 50 comprises a first piece 51 and a pair of second pieces 52. The connection hardware 50 is formed so as to form a U-shape when viewed in the X-axis direction. The plate thickness direction of the first piece 51 is along the Z-axis direction. The pair of second pieces 52 face each other in the Y-axis direction. The pair of second pieces 52 are bent from the first piece 51 and extend in the Z-axis direction. The plate thickness direction of the second pieces 52 is along the Y-axis direction.

[0033] A through hole penetrating in the plate thickness direction is formed in the first piece 51. An anchor bolt 20 is inserted into the through hole of the first piece 51. A through hole penetrating in the plate thickness direction is formed in the second piece 52. A drift pin 60 is inserted into the through hole of the second piece 52. The connection hardware 50 is fixed to the upper end of the anchor bolt 20. The connection hardware 50 is placed on the base 30.

[0034] [Bottom end 41 of column 40] The lower end 41 of the pillar 40 is formed with a groove 45 into which the connecting hardware 50 is embedded, and a through hole 46 into which the drift pin 60 is inserted. The groove 45 includes a groove that accommodates a first piece 51 and a pair of second pieces 52 of the connecting hardware 50. The groove 45 is formed so as to be recessed upward from the lower surface 43. The groove 45 is formed so as to penetrate the pillar 40 in the X-axis direction. The connecting hardware 50 is accommodated in the groove 45.

[0035] Further, groove portion 45 includes a groove portion that accommodates an upper end portion of anchor bolt 20 and nut 22. Nut 22 is attached to the upper end portion of anchor bolt 20 and presses connecting hardware 50 downward. Nut 22 is disposed between a pair of second pieces 52 and presses first piece 51 downward. The upper end portion of anchor bolt 20 and nut 22 are accommodated in groove portion 45.

[0036] A plurality of through holes 46 penetrating in the Y-axis direction are formed in the lower end portion 41 of the pillar 40. Drift pins 60 are inserted into the through holes 46. The drift pins 60 penetrate the through holes 46 of the pillar 40 and the through holes of the connecting hardware 50 in the Y-axis direction. This connects the lower end portion 41 of the pillar 40 and the connecting hardware 50.

[0037] [Washer 70] Next, the washer 70 will be described with reference to Figs. 2 to 5. Fig. 4 is a perspective view showing the washer 70 from above. Fig. 5 is a perspective view showing the washer 70 from below. The column base joint structure 100 includes the washer 70 that receives a compressive force acting on the column 40. The washer 70 is an example of a compressive force receiving member. The washer 70 is attached to the anchor bolt 20 and receives the compressive force of the column 40.

[0038] 4 and 5, the washer 70 has a tubular portion 71 and a washer portion 72. The tubular portion 71 has a predetermined length in the Z-axis direction. An internal thread portion that screws into the anchor bolt 20 is formed on the inner circumferential surface of the tubular portion 71. The washer portion 72 is disk-shaped and protrudes radially outward from the washer portion 72. The plate thickness direction of the washer portion 72 is along the Z-axis direction.

[0039] The washer portion 72 has a first surface 72a and a second surface 72b that face each other in the Z-axis direction. The first surface 72a is a surface that is disposed closer to the pillar 40. The second surface 72b is a surface that is disposed farther from the pillar 40.

[0040] As shown in Figures 2 and 3, the tube portion 71 is accommodated in the through hole 33 of the base 30. A step portion that accommodates the washer portion 72 is formed in the base 30. The step portion is formed so as to be recessed from the upper surface 32 of the base 30. The step portion includes a step surface that abuts against the second surface 72b of the washer portion 72. The step surface faces the second surface 72b of the washer portion 72 in the Z-axis direction. The first surface 72a is disposed at approximately the same position as the upper surface 32 of the base 30 in the Z-axis direction.

[0041] The washer 70 is attached to the anchor bolt 20 and can withstand the compressive force acting on the column 40. The outer diameter of the washer portion 72 is the same length in the Y-axis direction as, for example, the first piece 51 of the connecting hardware 50. The length in the X-axis direction of the first piece 51 of the connecting hardware 50 is longer than the outer diameter of the washer portion 72. The first surface 72a of the washer portion 72 abuts against the first piece 51 of the connecting hardware 50 in the Z-axis direction. The washer portion 72 can withstand a downward force acting on the connecting hardware 50 in the Z-axis direction.

[0042] The second surface 72b of the washer portion 72 abuts against the step surface of the base 30 in the Z-axis direction. The step surface of the base 30 can receive a downward force acting on the washer portion 72 in the Z-axis direction.

[0043] The cylindrical portion 71 is attached to the anchor bolt 20. The downward force acting on the washer 70 is transmitted to the anchor bolt 20.

[0044] [Connection between anchor bolt 20 and connecting hardware 50] The connection hardware 50 is attached to the anchor bolt 20 at a position above the washer 70. As described above, the connection hardware 50 can be fixed to the anchor bolt 20 by attaching the nut 22 to the upper end of the anchor bolt 20. The first piece 51 of the connection hardware 50 is pressed against the upper surface 32 of the base 30 and the first surface 72a of the washer portion 72 of the washer 70.

[0045] [Connection between the lower end 41 of the pillar 40 and the connecting hardware 50] The connection hardware 50 fixed to the anchor bolt 20 is accommodated in the groove 45 of the lower end 41 of the column 40. In this state, the column 40 extends in the Z-axis direction, and the lower surface 43 abuts against the upper surface of the base 30. The through holes of the pair of second pieces 52 of the connection hardware 50 and the through hole 46 of the lower end 41 of the column 40 are arranged at the same position. The connection hardware 50 and the column 40 are connected by inserting the drift pin 60 into the through hole of the connection hardware 50 and the through hole of the column 40. The column 40 is fixed to the foundation 10 via the drift pin 60, the connection hardware 50, the anchor bolt 20, and the base 30.

[0046] [Transmission path of tensile force acting on column 40] Next, the transmission path of the tensile force acting on the column 40 will be described with reference to Figures 2, 3, and 6. Figure 6 is a diagram showing the transmission path of the tensile force acting on the column 40. The tensile force acting on the column 40 is an upward force in the Z-axis direction. The tensile force acting on the column 40 is transmitted to the connection hardware 50 via the drift pin 60. The force transmitted to the connection hardware 50 is transmitted to the foundation 10 via the anchor bolt 20. The tensile force acting on the column 40 can be received by the foundation 10.

[0047] [Transmission path of compressive force acting on column 40] Next, the transmission path of the compressive force acting on the pillar 40 will be described with reference to Figures 2, 3, and 7. Figure 7 is a diagram showing the transmission path of the compressive force acting on the pillar 40. The compressive force acting on the pillar 40 is a downward force in the Z-axis direction. The compressive force acting on the pillar 40 is transmitted to the foundation 30 as the lower surface 43 abuts against the upper surface 32 of the foundation 30. The force transmitted to the foundation 30 is transmitted to the foundation 10 as the lower surface 31 of the foundation 30 abuts against the upper surface 11 of the foundation 10. A part of the compressive force acting on the pillar 40 can be received by the foundation 10 via the foundation 30.

[0048] In addition, the compressive force acting on the column 40 is transmitted to the connecting hardware 50 via the drift pin 60. The force transmitted to the connecting hardware 50 is transmitted to the washer 70 as the connecting hardware 50 and the washer 70 are in contact with each other. A washer portion 72 of the washer 70 receives the connecting hardware 50 from below. The force transmitted to the washer 70 is transmitted to the foundation 10 via the anchor bolt 20. A portion of the compressive force acting on the column 40 can be received by the foundation 10 via the anchor bolt 20.

[0049] Furthermore, the force transmitted to the washer 70 is transmitted to the foundation 30 as a result of the washer portion 72 abutting against the step surface of the foundation 30. The force transmitted to the foundation 30 is transmitted to the foundation 10 as described above. In this manner, the compressive force acting on the column 40 is transmitted to the foundation 10 through multiple transmission paths.

[0050] [Function and effect of the column base joint structure 100 according to the first embodiment] The column base joint structure 100 in the first embodiment is a column base joint structure 100 that joins a lower end 41 of a column 40 and a foundation 10, and includes an anchor bolt 20 that is embedded in the foundation 10 and protrudes upward, a base 30 that is placed on the foundation 10 and has a through hole 33 through which the anchor bolt 20 is inserted, extends horizontally, and supports the column 40, a washer 70 that is attached to the anchor bolt 20 and is a compression force receiving member that receives the compression force of the column 40, and a connecting hardware 50 that is attached to the anchor bolt 20 at a position above the washer 70 and has a through hole through which a drift pin 60 that is a rod-shaped fixing device is inserted.

[0051] The lower end 41 of the column 40 is formed with a groove 45 into which the connecting hardware 50 is embedded, and a through hole 46 into which the drift pin 60 is inserted. The anchor bolt 20 protrudes above the washer 70 and the upper surface 32 of the base 30. The connecting hardware 50 is fixed to the upper end of the anchor bolt and embedded in the groove 45 of the column 40. The drift pin 60 passes through the through hole 46 of the lower end 41 of the column 40 and the through hole of the connecting hardware 50, and fixes the connecting hardware 50 and the lower end 41 of the column 40. The column 40 is fixed to the anchor bolt 20 via the drift pin 60 and the connecting hardware 50. The washer 70 receives the connecting hardware 50 from below.

[0052] According to this embodiment, the tensile force acting on the column 40 is transmitted to the connection metal 50 via the drift pin 60, and the tensile force transmitted to the connection metal 50 is transmitted to the foundation 10 via the anchor bolt 20. According to this embodiment, the compressive force acting on the column 40 is transmitted to the foundation 10 via the foundation 30 on which the column 40 is placed. Furthermore, according to this embodiment, a part of the compressive force acting on the column 40 is transmitted to the connection metal 50 via the drift pin 60, and the compressive force transmitted to the connection metal 50 is transmitted to the washer 70 fixed to the anchor bolt 20. The compressive force transmitted to the washer 70 is transmitted to the foundation 10 via the anchor bolt 20. In this way, the compressive force acting on the column 40 is transmitted to the anchor bolt 20 via the washer 70, thereby reducing the compressive force acting from the column 40 to the foundation 30. As a result, the compressive strength of the column base joint structure 100 can be improved.

[0053] Furthermore, according to this embodiment, the base 30 is placed on the foundation 10 and extends in the X-axis direction, so that the wall can be easily positioned when it is installed.

[0054] In the column base joint structure 100, the washer 70 has a tubular portion 71 having an internal thread and attached to the anchor bolt 20, and a washer portion 72 extending radially outward from the tubular portion. The washer portion 72 receives the connecting hardware 50 from below.

[0055] According to the column base joint structure 100 having this configuration, the washer portion 72 protrudes radially outward from the tubular portion 71, so that the washer portion 72 and the connecting hardware 50 can be brought into contact with each other. According to this aspect, the compressive force acting on the column 40 can be transmitted from the connecting hardware 50 to the washer portion 72, and then to the anchor bolt 20 via the washer portion 72. According to this aspect, the tubular portion 71 is provided with an internal thread, so that the compressive force receiving member can be easily attached to the anchor bolt. Furthermore, according to this aspect, the force received by the washer portion 72 can be reliably transmitted to the anchor bolt 20.

[0056] [Column base joint structure 100B according to the second embodiment] Next, a column base joint structure 100B according to a second embodiment will be described with reference to Fig. 8. Fig. 8 is a partial cross-sectional view showing the column base joint structure 100B according to the second embodiment, showing a cross section along the longitudinal direction of the base 30. The column base joint structure 100B in the second embodiment differs from the column base joint structure 100 according to the first embodiment shown in Fig. 2 in that it includes a metal plate 55 disposed between the base 30 and the column 40. In the description of the second embodiment, the same description as in the above first embodiment will be omitted.

[0057] The column base joint structure 100B includes a metal plate 55. The metal plate 55 has a rectangular shape in a plan view. The thickness direction of the metal plate 55 is along the Z-axis direction. The size of the metal plate 55 may be the same as the lower surface 43 of the column 40, or may be larger than the lower surface 43. The metal plate 55 has a through hole penetrating in the thickness direction. The anchor bolt 20 is inserted into the through hole of the metal plate 55. The metal plate 55 is placed on the upper surface 32 of the base 30. The column 40 is placed on the metal plate 55. The connecting hardware 50 and the metal plate 55 are pressed downward by tightening the nut 22 screwed onto the upper end of the anchor bolt 20.

[0058] In the Z-axis direction, the upper surface 32 of the base 30 and the lower surface of the metal plate 55 abut against each other. In the Z-axis direction, the lower surface 43 of the pillar 40 and the upper surface of the metal plate 55 abut against each other, and the lower surface of the first piece 51 of the connecting hardware 50 and the upper surface of the metal plate 55 abut against each other.

[0059] [Transmission path of compressive force acting on column 40] Next, the transmission path of the compressive force acting on the column 40 will be described with reference to Figs. 8 and 9. Fig. 9 is a diagram showing the transmission path of the compressive force acting on the column 40. The compressive force acting on the column 40 is transmitted to the metal plate 55 by the lower surface 43 being in contact with the metal plate 55. The force transmitted to the metal plate 55 is transmitted to the foundation 30 by the lower surface of the metal plate 55 being in contact with the upper surface 32 of the foundation 30. The force transmitted to the foundation 30 is transmitted to the foundation 10 by the lower surface 31 of the foundation 30 being in contact with the upper surface 11 of the foundation 10. A part of the compressive force acting on the column 40 can be received by the foundation 10 via the foundation 30.

[0060] In addition, the compressive force acting on the column 40 is transmitted to the connection hardware 50 via the drift pin 60. The force transmitted to the connection hardware 50 is transmitted to the metal plate 55 as the connection hardware 50 and the metal plate 55 abut against each other. The force transmitted to the metal plate 55 is transmitted to the washer 70 as the lower surface of the metal plate 55 and the washer 70 abut against each other. The washer portion 72 of the washer 70 receives the metal plate 55 from below. The force transmitted to the washer 70 is transmitted to the foundation 10 via the anchor bolt 20. A portion of the compressive force acting on the column 40 can be received by the foundation 10 via the anchor bolt 20.

[0061] [Function and effect of the column base joint structure 100B according to the second embodiment] The column base joint structure 100B according to the second embodiment has the same effects as those of the column base joint structure 100 according to the first embodiment.

[0062] The column base joint structure 100B of the second embodiment further includes a metal plate 55 arranged between the lower surface 43 of the column 40 and the upper surface 32 of the base 30, and the washer 70 supports the connecting hardware 50 from below via the metal plate 55.

[0063] According to this embodiment, the compressive force acting on the column 40 can be received by the metal plate 55 arranged between the lower surface 43 of the column 40 and the upper surface 32 of the foundation 30. According to this embodiment, the compressive force acting on the column 40 can be transmitted to the foundation 30 via the metal plate 55. The compressive force transmitted to the foundation 30 is transmitted to the foundation. Also, according to this embodiment, a part of the compressive force acting on the column 40 is transmitted to the connection metal 50 via the drift pin 60, and the compressive force transmitted to the connection metal 50 is transmitted to the metal plate 55 arranged between the lower surface 43 of the column 40 and the upper surface 32 of the foundation 30. The force transmitted to the metal plate 55 is transmitted to the foundation 30 and the washer 70. The compressive force transmitted to the washer 70 is transmitted to the foundation 10 via the anchor bolt 20. In this way, the compressive force acting on the column 40 can be reduced by transmitting the compressive force acting on the column 40 to the anchor bolt 20 via the washer 70. As a result, the compressive strength of the column base joint structure 100B can be improved.

[0064] [Column base joint structure 100C according to the third embodiment] Next, a column base joint structure 100C according to the third embodiment will be described with reference to Figs. 10 and 11. Fig. 10 is a cross-sectional view showing the column base joint structure 100C according to the third embodiment, showing a cross-section along the longitudinal direction of the base 30. Fig. 11 is a partial cross-sectional view showing the column base joint structure 100C according to the third embodiment, showing a cross-section intersecting with the longitudinal direction of the base 30. The column base joint structure 100C according to the third embodiment differs from the column base joint structure 100 according to the first embodiment shown in Fig. 2 in that the column base joint structure 100C according to the third embodiment includes a connecting hardware 90 having a different shape from the connecting hardware 50 instead of the connecting hardware 50, and that the shape of the groove portion 45 is different. In the description of the third embodiment, the same description as in the above embodiments will be omitted.

[0065] The column base joint structure 100C includes a connecting hardware 90 that connects the anchor bolt 20 and the column 40. The connecting hardware 90 includes a first piece 91 and a second piece 92. The connecting hardware 90 is formed to form an inverted T-shape when viewed in the X-axis direction. The plate thickness direction of the first piece 91 is along the Z-axis direction. The second piece 92 extends in the Y-axis direction from the center of the first piece 91. The plate thickness direction of the second piece 92 is along the Y-axis direction. The second piece 92 is welded to the first piece 91.

[0066] The first piece 91 has a rectangular shape in a plan view. The size of the first piece 91 may be the same as the lower surface 43 of the column 40. A through hole penetrating in the plate thickness direction is formed in the first piece 91. An anchor bolt 20 is inserted into the through hole of the first piece 91. A through hole penetrating in the plate thickness direction is formed in the second piece 92. A drift pin 60 is inserted into the through hole of the second piece 92.

[0067] 10, an opening 92b penetrating in the plate thickness direction is formed at the lower end of the second piece 92. The upper end of the anchor bolt 20 and the nut 22 are disposed in the opening 92b. The connection hardware 90 is fixed to the upper end of the anchor bolt 20. The connection hardware 90 is placed on the base 30.

[0068] A groove 45 in which the connecting hardware 90 is embedded is formed in the lower end 41 of the pillar 40. The groove 45 includes a groove that accommodates the second piece 92 of the connecting hardware 90. The groove 45 is formed so as to be recessed upward from the lower surface 43. The groove 45 is formed so as to penetrate the pillar 40 in the X-axis direction. The second piece 92 of the connecting hardware 90, the upper end of the anchor bolt 20, and the nut 22 are accommodated in the groove 45.

[0069] The pillar 40 is placed on the first piece 91 of the connecting hardware 90. By tightening the nut 22 that screws onto the upper end of the anchor bolt 20, the connecting hardware 90 is pressed downward.

[0070] In the Z-axis direction, the upper surface 32 of the base 30 and the lower surface of the first piece 91 of the connecting hardware 90 abut against each other. In the Z-axis direction, the lower surface 43 of the pillar 40 and the upper surface of the first piece 91 abut against each other.

[0071] [Function and effect of the column base joint structure 100C according to the third embodiment] The column base joint structure 100C according to the third embodiment has the same effect as the column base joint structure 100 according to the first embodiment. In the column base joint structure 100C, the washer 70 can receive the connection hardware 90 from below. The compressive force acting on the column 40 can be transmitted to the foundation 10 via the drift pin 60, the connection hardware 90, the washer 70, and the anchor bolt 20. In the column base joint structure 100C, the compressive strength against the compressive force acting on the column 40 can be improved.

[0072] [Beam-column joint structure 200 according to the fourth embodiment] Next, a column-beam joint structure 200 according to a fourth embodiment will be described with reference to Figs. 12 and 13. Fig. 12 is a partial cross-sectional view showing the column-beam joint structure 200 according to the fourth embodiment, showing a cross-section along the longitudinal direction of the beam 210. Fig. 13 is a partial cross-sectional view showing the column-beam joint structure 200 according to the fourth embodiment, showing a cross-section intersecting with the longitudinal direction of the beam 210. The longitudinal direction of the beam 210 is along the X-axis direction. Fig. 12 shows a part of a cross-section along the XZ plane in the beam 210. Fig. 13 shows a cross-section along the YZ plane in the beam 210. In the description of the column-beam joint structure 200 of the fourth embodiment, the same description as that of the column base joint structure 100 according to the above embodiment will be omitted.

[0073] The column-beam joint structure 200 is a part of a building, and is a column-beam joint structure that joins an upper end 42 of a column 40A, a beam 210, and a lower end 41 of a column 40B. The column-beam joint structure 200 includes columns 40A and 40B, the beam 210, and a connecting bolt 220.

[0074] [Columns 40A, 40B] Pillars 40A and 40B are wooden pillars. Pillar 40A and pillar 40B are connected vertically via beam 210. Pillar 40A is an example of a first wooden pillar, and pillar 40B is an example of a second wooden pillar. An upper surface 44 of pillar 40A faces a lower surface 211 of beam 210 in the Z-axis direction. A lower surface 43 of pillar 40B faces an upper surface 212 of beam 210 in the Z-axis direction.

[0075] [Beam 210] The beam 210 is a wooden beam. The wooden beam is formed by stacking multiple layers, and the planks in these layers are arranged so that the grain direction of the planks in the adjacent layers is perpendicular to each other. The multiple layers are bonded to each other. The wooden beam may be CLT or other wooden members such as LVL. The wooden members may be laminated timber, for example, sawn lumber or solid wood.

[0076] The beam 210 extends in the X-axis direction between the pillars 40A and 40B. The beam 210 is joined to a plurality of pillars 40A, 40B adjacent to each other in the X-axis direction. The beam 210 is formed with a through hole 213 penetrating in the Z-axis direction. The connecting bolt 220 passes through the through hole 213. The connecting bolt 220 and the through hole 213 are disposed at positions overlapping with the pillars 40A, 40B.

[0077] The beam 210 has an upper surface 212 and a lower surface 211. A pillar 40B is placed on the upper surface 212, and a pillar 40A is disposed below the lower surface 211. A part of a connection metal 90B may be disposed between the pillar 40B and the upper surface 212, or a metal plate may be disposed, or the pillar 40B may be disposed directly on the upper surface 212. Similarly, a part of a connection metal 90A may be disposed between the pillar 40A and the lower surface 211, or a metal plate may be disposed, or the beam 210 may be placed directly on the upper surface 44 of the pillar 40A.

[0078] [Connecting hardware 90A, 90B] The column-beam joint structure 200 includes connection hardware 90A, 90B and drift pins 60A, 60B that connect a connecting bolt 220 to columns 40A, 40B. The connection hardware 90A connects the upper end 42 of column 40A to the connecting bolt 220. The connection hardware 90B connects the lower end 41 of column 40B to the connecting bolt 220. The connection hardware 90A, 90B include a first piece 91 and a second piece 92. The structure of the connection hardware 90A, 90B is the same as that of the connection hardware 90 described above.

[0079] The connection hardware 90A is fixed to the lower end of the connecting bolt 220. The connection hardware 90A is disposed on the lower surface 211 of the connecting bolt 220. The connection hardware 90B is fixed to the upper end of the connecting bolt 220. The connection hardware 90B is placed on the connecting bolt 220. The connection hardware 90A is an example of a first connection hardware, and the connection hardware 90B is an example of a second connection hardware. The drift pin 60A is an example of a first rod-shaped fastener, and the drift pin 60B is an example of a second rod-shaped fastener.

[0080] [Upper end 42 of column 40A] A groove 45 into which the connecting hardware 90A is embedded, and a through hole 46 into which the drift pin 60A is inserted are formed in the upper end 42 of the pillar 40A. The groove 45 accommodates a second piece 92 of the connecting hardware 90A. The groove 45 is formed so as to be recessed downward from the upper surface 44. The groove 45 is formed so as to penetrate the pillar 40 in the X-axis direction.

[0081] Further, groove portion 45 includes a groove portion that accommodates the lower end portion of connecting bolt 220 and nut 22. Nut 22 is attached to the lower end portion of connecting bolt 220 and presses connecting hardware 90A upward. Nut 22 is disposed on the lower surface of first piece 91 and presses first piece 91 upward. The upper end portion of connecting bolt 220 and nut 22 are accommodated in groove portion 45.

[0082] A plurality of through holes 46 penetrating in the Y-axis direction are formed in the upper end portion 42 of the column 40A. Drift pins 60A are inserted into the through holes 46. The drift pins 60A penetrate the through holes 46 of the column 40A and the through holes of the connecting hardware 90A in the Y-axis direction. This connects the upper end portion 42 of the column 40A and the connecting hardware 90A.

[0083] [Lower end 41 of column 40B] A groove 45 into which the connecting hardware 90B is embedded and a through hole 46 into which the drift pin 60B is inserted are formed in the lower end 41 of the pillar 40B. The groove 45 accommodates a second piece 92 of the connecting hardware 90B. The groove 45 is formed so as to be recessed upward from the lower surface 43. The groove 45 is formed so as to penetrate the pillar 40 in the X-axis direction.

[0084] Further, groove portion 45 includes a groove portion that accommodates an upper end portion of connecting bolt 220 and nut 22. Nut 22 is attached to the upper end portion of connecting bolt 220 and presses connecting hardware 90B downward. Nut 22 is disposed on the upper surface of first piece 91 and presses first piece 91 downward. The upper end portion of connecting bolt 220 and nut 22 are accommodated in groove portion 45.

[0085] A plurality of through holes 46 penetrating in the Y-axis direction are formed in the lower end portion 41 of the column 40B. Drift pins 60B are inserted into the through holes 46. The drift pins 60B pass through the through holes 46 of the column 40B and the through holes of the connecting hardware 90B in the Y-axis direction. This connects the lower end portion 41 of the column 40B and the connecting hardware 90B.

[0086] [Washer 70A, 70B] The column-beam joint structure 200 includes washers 70A, 70B that receive the compressive force acting on columns 40A, 40B. Washer 70A is attached to the lower part of connecting bolt 220 and receives the compressive force acting on column 40A. Washer 70B is attached to the upper part of connecting bolt 220 and receives the compressive force acting on column 40B. Washer 70A is an example of a first compressive force receiving member. Washer 70B is an example of a second compressive force receiving member. Washers 70A, 70B have the same structure as washer 70 described above.

[0087] The washers 70A and 70B have a tube portion 71 and a washer portion 72. The tube portion 71 is accommodated in the through hole 213 of the beam 210. In addition, a step portion for accommodating the washer portion 72 is formed in the beam 210. The step portion for accommodating the washer 70A is formed so as to be recessed from the lower surface 211 of the beam 210. The step portion for accommodating the washer 70B is formed so as to be recessed from the upper surface 212 of the beam 210. The step portion includes a step surface that abuts against the second surface 72b of the washer portion 72. The step surface faces the second surface 72b of the washer portion 72 in the Z-axis direction. The first surface 72a of the washer 70A is disposed at approximately the same position as the lower surface 211 of the beam 210 in the Z-axis direction. The first surface 72a of the washer 70B is disposed at approximately the same position as the upper surface 212 of the beam 210 in the Z-axis direction.

[0088] [Connection between upper end 42 of column 40A and connecting hardware 90A] The connection hardware 90A fixed to the connecting bolt 220 is accommodated in the groove 45 of the upper end 42 of the pillar 40A. In this state, the pillar 40A extends in the Z-axis direction, and the upper surface 44 abuts against the lower surface of the first piece 91. In addition, the through hole of the second piece 92 of the connection hardware 90 and the through hole 46 of the upper end 42 of the pillar 40A are arranged in the same position. The connection hardware 90A and the pillar 40A are connected by inserting the drift pin 60A through the through hole of the connection hardware 90A and the through hole of the pillar 40A. [Connection between the lower end 41 of the column 40B and the connecting hardware 90B] The connection hardware 90B fixed to the connecting bolt 220 is accommodated in the groove 45 of the lower end 41 of the pillar 40B. In this state, the pillar 40B extends in the Z-axis direction, and the lower surface 43 abuts against the upper surface of the first piece 91. In addition, the through hole of the second piece 92 of the connection hardware 90B and the through hole 46 of the lower end 41 of the pillar 40B are arranged at the same position. The connection hardware 90B and the pillar 40B are connected by inserting the drift pin 60B through the through hole of the connection hardware 90B and the through hole of the pillar 40B.

[0089] The columns 40A, 40B are connected to each other via connecting hardware 90A, 90B, drift pins 60A, 60B, connecting bolts 220, and beams 210.

[0090] [Transmission path of tensile force acting on columns 40A and 40B] Next, the transmission path of the tensile force acting on the columns 40A, 40B will be described with reference to Figures 12, 13, and 14. Figure 14 is a diagram showing the transmission path of the tensile force acting on the columns 40A, 40B. The tensile force acting on the lower end portion 41 of the column 40B is an upward force in the Z-axis direction. The tensile force acting on the column 40B is transmitted to the connection hardware 90B via the drift pin 60A. The force transmitted to the connection hardware 90B is transmitted to the connection hardware 90A via the connecting bolt 220. The force transmitted to the connection hardware 90A is transmitted to the column 40A via the drift pin 60A. The tensile force transmitted to the column 40A is transmitted to the foundation 10 via the anchor bolt 20 as described above.

[0091] [Transmission path of compressive force acting on column 40] Next, referring to FIG. 12, FIG. 13, and FIG. 15, the transmission path of the compressive force acting on the columns 40A and 40B will be described. FIG. 15 is a diagram showing the transmission path of the compressive force acting on the columns 40A and 40B. The compressive force acting on the column 40B is a downward force in the Z-axis direction. The compressive force acting on the column 40B is transmitted to the beam 210 by the abutment between the first piece 91 of the connecting metal 90B and the upper surface 212 of the beam 210. The force transmitted to the beam 210 is transmitted to the column 40A by the abutment between the lower surface 211 of the beam 210 and the upper surface of the first piece 91 of the connecting metal 90A. A part of the compressive force acting on the column 40B can be received by the lower column 40A via the beam 210. The compressive force transmitted to the column 40A can be received by the foundation 10 as described above.

[0092] In addition, the compressive force acting on the column 40B is transmitted to the connection hardware 90B via the drift pin 60B. The force transmitted to the connection hardware 50 is transmitted to the washer 70B as the first piece 91 of the connection hardware 90B abuts against the washer 70B. The washer portion 72 of the washer 70B receives the connection hardware 90B from below. The force transmitted to the washer 70B is transmitted to the washer 70A via the connecting bolt 220.

[0093] The force transmitted to washer 70A is transmitted to connecting hardware 90A because washer portion 72 of washer 70A abuts against first piece 91 of connecting hardware 90A. The force transmitted to connecting hardware 90A is transmitted to column 40A.

[0094] Furthermore, the force transmitted to washer 70B is transmitted to beam 210 by the abutment between washer portion 72 and the step surface of beam 210. The force transmitted to beam 210 is transmitted to column 40A below, as described above. The compressive force transmitted to column 40A can be received by foundation 10, as described above. In this manner, the compressive force acting on column 40B is transmitted to column 40A through multiple transmission paths.

[0095] [Functions and Effects of the Beam-Column Joint Structure 200 According to the Fourth Embodiment] The beam-column joint structure 200 according to the fourth embodiment has the same effects as the column base joint structure 100 according to the first embodiment. The compressive strength of the beam-column joint structure 200 can be improved.

[0096] The column-beam joint structure 200 according to the fourth embodiment is a column-beam joint structure that joins the upper end 42 of the column 40A, the beam 210, and the lower end 41 of the column 40B, and includes a connecting bolt 220 that penetrates the through hole 213 of the beam 210 and protrudes above and below the beam 210, a washer 70A that is a first compression force receiving member that is attached to the connecting bolt 220 and receives the compression force of the column 40A, a washer 70B that is a second compression force receiving member that is attached to the connecting bolt 220 and receives the compression force of the column 40B, a connecting hardware (first connecting hardware) 90A that is attached to the connecting bolt 220 at a position below the washer 70A and has a through hole through which the first rod-shaped fastener 60A is inserted, and a connecting hardware (second connecting hardware) 90B that is attached to the connecting bolt 220 at a position above the washer 70B and has a through hole through which the second rod-shaped fastener drift pin 60B is inserted.

[0097] The upper end 42 of the column 40A is formed with a groove 45 into which the connection hardware 90A is embedded, and a through hole 46 into which the drift pin 60A is inserted. The connection hardware 90A is fixed to the lower end of the connecting bolt 220 and embedded in the groove 45 of the column 40A. The drift pin 60A passes through the through hole 46 of the upper end 42 of the column 40 and the through hole of the connection hardware 90A, and fixes the connection hardware 90A to the upper end 42 of the column 40A. The column 40A is fixed to the connecting bolt 220 via the drift pin 60A and the connection hardware 90A. The washer 70A receives the connection hardware 90A from above.

[0098] The lower end 41 of the column 40B is formed with a groove 45 into which the connection hardware 90B is embedded, and a through hole 46 into which the drift pin 60B is inserted. The connection hardware 90B is fixed to the upper end of the connecting bolt 220 and embedded in the groove 45 of the column 40B. The drift pin 60B passes through the through hole 46 of the lower end 41 of the column 40 and the through hole of the connection hardware 90B, and fixes the connection hardware 90B to the lower end 41 of the column 40B. The column 40B is fixed to the connecting bolt 220 via the drift pin 60B and the connection hardware 90B. The washer 70B receives the connection hardware 90B from below.

[0099] According to this embodiment, the tensile force acting on the column 40A is transmitted to the connection hardware 90A via the drift pin 60A, and the tensile force transmitted to the connection hardware 90A is transmitted to the column 40B via the connecting bolt 220. According to this embodiment, the compressive force acting on the column 40A is transmitted to the beam 210 via the upper surface 44 of the column 40A. Furthermore, according to this embodiment, a part of the compressive force acting on the column 40A is transmitted to the connection hardware 90A via the drift pin 60A, and the compressive force transmitted to the connection hardware 90A is transmitted to the washer 70A fixed to the connecting bolt 220. The compressive force transmitted to the washer 70A is transmitted to the beam 210 via the connecting bolt 220. In this way, the compressive force acting on the column 40A is transmitted to the connecting bolt 220 via the washer 70A, thereby reducing the compressive force acting from the column 40A to the lower surface 211 of the beam 210. As a result, the compressive strength of the column-beam joint structure 200 can be improved.

[0100] According to this embodiment, the tensile force acting on the column 40B is transmitted to the connection hardware 90B via the drift pin 60B, and the tensile force transmitted to the connection hardware 90B is transmitted to the column 40A via the connecting bolt 220. According to this embodiment, the compressive force acting on the column 40B is transmitted to the beam 210 via the lower surface 43 of the column 40B. Furthermore, according to this embodiment, a part of the compressive force acting on the column 40B is transmitted to the connection hardware 90B via the drift pin 60B, and the compressive force transmitted to the connection hardware 90B is transmitted to the washer 70B fixed to the connecting bolt 220. The compressive force transmitted to the washer 70B is transmitted to the beam 210 via the connecting bolt 220. In this way, the compressive force acting on the column 40B is transmitted to the connecting bolt 220 via the washer 70B, thereby reducing the compressive force acting on the upper surface 212 of the beam 210 from the column 40B. As a result, the compressive strength of the column-beam joint structure 200 can be improved.

[0101] [Beam-column joint structure 200B according to the fifth embodiment] Next, a column-beam joint structure 200B according to a fifth embodiment will be described with reference to Fig. 16 and Fig. 17. Fig. 16 is a partial cross-sectional view showing the column-beam joint structure 200B according to the fifth embodiment, showing a cross-section along the longitudinal direction of the beam 210. Fig. 17 is a partial cross-sectional view showing the column-beam joint structure 200B according to the fifth embodiment, showing a cross-section intersecting with the longitudinal direction of the beam 210. Fig. 16 shows a part of a cross-section along the XZ plane of the beam 210. Fig. 17 shows a cross-section along the YZ plane of the beam 210.

[0102] The column-beam connection structure 200B of the fifth embodiment differs from the column-beam connection structure 200 of the fourth embodiment shown in Figures 12 and 13 in that it includes connection metals 50A, 50B instead of connection metals 90A, 90B, and metal plates 55A, 55B arranged between the columns 40A, 40B and the beam 210. In the description of the column-beam connection structure 200B of the fifth embodiment, descriptions similar to those of the column base connection structure 100 and the column-beam connection structure 200 of the above-mentioned embodiments will be omitted.

[0103] The column-beam joint structure 200B may include connection hardware 50A, 50B. The connection hardware 50A, 50B have the same structure as the above-mentioned connection hardware 50. The column-beam joint structure 200B may include a metal plate 55A between the upper surface 44 of the column 40A and the lower surface 211 of the beam 210. The column-beam joint structure 200B may include a metal plate 55B between the lower surface 43 of the column 40B and the upper surface 212 of the beam 210. The metal plates 55A, 55B have the same structure as the above-mentioned metal plate 55.

[0104] [Functions and effects of the beam-column joint structure 200B according to the fifth embodiment] The column-beam joint structure 200B according to the fifth embodiment has the same effects as those of the column-beam joint structure 200 according to the fourth embodiment.

[0105] [Beam-column joint structure 200C according to the sixth embodiment] Next, a column-beam joint structure 200C according to a sixth embodiment will be described with reference to Fig. 18 and Fig. 19. Fig. 18 is a partial cross-sectional view showing the column-beam joint structure 200C according to the sixth embodiment, and is a diagram showing a cross section along the longitudinal direction of the beam 210. Fig. 19 is a partial cross-sectional view showing the column-beam joint structure 200C according to the sixth embodiment, and is a diagram showing a cross section intersecting with the longitudinal direction of the beam 210.

[0106] The column-beam connection structure 200C of the sixth embodiment differs from the column-beam connection structure 200 according to the fourth embodiment shown in Figures 12 and 13 in the number and arrangement of the connecting bolts 220. In the explanation of the column-beam connection structure 200C of the sixth embodiment, explanations similar to those of the column base connection structure 100 and the column-beam connection structure 200 according to the above embodiments will be omitted.

[0107] The beam-column joint structure 200C includes a plurality of connecting bolts 220. The plurality of connecting bolts 220 are arranged spaced apart in the X-axis direction. The plurality of connecting bolts 220 are arranged spaced apart in the Y-axis direction. The plurality of connecting bolts 220 are respectively arranged on both sides of the second pieces 92 of the connection hardware 90A, 90B in the Y-axis direction. The plurality of connecting bolts 220 are arranged at different positions from each other in the X-axis and Y-axis directions.

[0108] [Functions and effects of the beam-column joint structure 200C according to the sixth embodiment] The column-beam connection structure 200C according to the sixth embodiment has the same effects as those of the column-beam connection structure 200 according to the fourth embodiment. The column-beam connection structure 200C may include a plurality of connecting bolts 220.

[0109] [Beam-column joint structure 200D according to the seventh embodiment] Next, a column-beam joint structure 200D according to the seventh embodiment will be described with reference to Fig. 20. Fig. 20 is a partial cross-sectional view showing the column-beam joint structure 200D according to the seventh embodiment, and shows a cross section along the longitudinal direction of a beam 210.

[0110] The column-beam connection structure 200D of the seventh embodiment differs from the column-beam connection structure 200B of the fifth embodiment shown in Fig. 16 in the number and arrangement of the connecting bolts 220. In the description of the column-beam connection structure 200D of the seventh embodiment, descriptions similar to those of the column base connection structure 100 and the column-beam connection structure 200 of the above-mentioned embodiments will be omitted.

[0111] The beam-column joint structure 200D includes a plurality of connecting bolts 220. The plurality of connecting bolts 220 are disposed apart from one another in the X-axis direction. The plurality of connecting bolts 220 are disposed at different positions from one another in the X-axis direction. [Functions and effects of the beam-column joint structure 200D according to the seventh embodiment] The column-beam connection structure 200D according to the seventh embodiment has the same effects as those of the column-beam connection structure 200 according to the fourth embodiment. The column-beam connection structure 200D may include a plurality of connecting bolts 220.

[0112] [Beam-column joint structure 200E according to the eighth embodiment] Next, a column-beam joint structure 200E according to the eighth embodiment will be described with reference to Fig. 21 and Fig. 22. Fig. 21 is a partial cross-sectional view showing the column-beam joint structure 200E according to the eighth embodiment, and is a diagram showing a cross section along the longitudinal direction of the beam 210. Fig. 22 is a partial cross-sectional view showing the column-beam joint structure 200E according to the eighth embodiment, and is a diagram showing a cross section intersecting with the longitudinal direction of the beam 210.

[0113] The column-beam connection structure 200E of the eighth embodiment differs from the column-beam connection structure 200 of the fourth embodiment shown in Figures 12 and 13 in that the column 40A is not joined to the beam 210, and that a metal plate 55A is attached to the lower surface 211 of the beam 210. In the description of the column-beam connection structure 200D of the eighth embodiment, descriptions similar to those of the column base connection structure 100 and the column-beam connection structure 200 of the above-mentioned embodiments will be omitted.

[0114] The column-beam joint structure 200E is a column-beam joint structure that joins the lower end portion 41 of the column 40B and the beam 210. The column-beam joint structure 200E includes a metal plate 55A having a through hole formed therein and disposed on the lower surface 211 of the beam 210, a connecting bolt 220 that passes through the through hole of the metal plate 55A and the through hole 213 of the beam 210 and protrudes above the beam 210, a washer 70B that is attached to the connecting bolt 220 and receives the compressive force of the column 40B, a connecting hardware 90B that is attached to the connecting bolt 220 at a position above the washer 70B and has a through hole 46 formed therein through which the drift pin 60B is inserted, and a nut 22 that is disposed on the lower surface of the metal plate 55A and attached to the lower end portion of the connecting bolt 220.

[0115] The lower end 41 of the column 40B is formed with a groove 45 into which the connecting hardware 90B is embedded, and a through hole 46 into which the drift pin 60B is inserted. The connecting bolt 220 protrudes upward from the beam 210. The connecting hardware 90B is fixed to the upper end of the connecting bolt 220 and embedded in the groove 45 of the column 40B. The drift pin 60B passes through the through hole 46 of the lower end 41 of the column 40B and the through hole of the connecting hardware 90B, and fixes the connecting hardware 90B and the lower end 41 of the column 40B. The column 40B is fixed to the connecting bolt 220 via the drift pin 60B and the connecting hardware 90B. A nut 22 is tightened to the lower end of the connecting bolt 220, and the connecting bolt 220 is fixed to the beam 210. The washer 70B receives the connecting hardware 90B from below.

[0116] The metal plate 55A is disposed so as to cover the lower surface 211 of the beam 210. The metal plate 55A is disposed at a position overlapping with the pillar 40B when viewed in the Z-axis direction. The metal plate 55A is pressed against the beam 210 by tightening the nut 22.

[0117] [Functions and Effects of the Beam-Column Joint Structure 200E According to the Eighth Embodiment] The column-beam joint structure 200E according to the eighth embodiment has the same effects as those of the column-beam joint structure 200 according to the fourth embodiment.

[0118] According to this embodiment, the tensile force acting on the column 40B is transmitted to the connection hardware 90B via the drift pin 60B, and the tensile force transmitted to the connection hardware 90B is transmitted to the beam 210 via the connecting bolt 220. According to this embodiment, the compressive force acting on the column 40B is transmitted to the beam 210 via the lower surface 43 of the column 40B. Furthermore, according to this embodiment, a part of the compressive force acting on the column 40B is transmitted to the connection hardware 90B via the drift pin 60B, and the compressive force transmitted to the connection hardware 90B is transmitted to the washer 70B fixed to the connecting bolt 220. The compressive force transmitted to the washer 70B is transmitted to the beam 210 via the connecting bolt 220. In this way, the compressive force acting on the column 40B is transmitted to the connecting bolt 220 via the washer 70B, thereby reducing the compressive force acting on the upper surface 212 of the beam 210 from the column 40B. As a result, the compressive strength of the column-beam joint structure 200E can be improved.

[0119] [Column-beam joint structure 200F according to the ninth embodiment] Next, a column-beam joint structure 200F according to the ninth embodiment will be described with reference to Fig. 23 and Fig. 24. Fig. 23 is a partial cross-sectional view showing the column-beam joint structure 200F according to the ninth embodiment, and is a diagram showing a cross section along the longitudinal direction of the beam 210. Fig. 24 is a partial cross-sectional view showing the column-beam joint structure 200F according to the ninth embodiment, and is a diagram showing a cross section intersecting with the longitudinal direction of the beam 210.

[0120] The column-beam joint structure 200F of the ninth embodiment is different from the column-beam joint structure 200E of the eighth embodiment shown in Figures 21 and 22 in that the column-beam joint structure 200F of the ninth embodiment includes a column 40A extending downward instead of the column 40B extending upward, and a metal plate 55B instead of the metal plate 55A. In the description of the column-beam joint structure 200E of the ninth embodiment, the same description as the column base joint structure 100 and the column-beam joint structure 200 of the above-mentioned embodiments will be omitted.

[0121] The column-beam joint structure 200F is a column-beam joint structure that joins the upper end 42 of the column 40A and the beam 210. The column-beam joint structure 200F includes a metal plate 55B having a through hole formed therein and arranged on the upper surface 212 of the beam 210, a connecting bolt 220 that penetrates the through hole of the metal plate 55B and the through hole 213 of the beam 210 and protrudes downward from the beam 210, a washer 70B attached to the connecting bolt 220 and receives the compressive force of the column 40A, a connecting hardware 90A attached to the connecting bolt 220 at a position below the washer 70B and having a through hole 46 formed therein through which the drift pin 60A is inserted, and a nut 22 arranged on the upper surface of the metal plate 55B and attached to the upper end of the connecting bolt 220.

[0122] The upper end 42 of the column 40A is formed with a groove 45 into which the connecting hardware 90A is embedded, and a through hole 46 into which the drift pin 60A is inserted. The connecting bolt 220 protrudes downward from the beam 210. The connecting hardware 90A is fixed to the lower end of the connecting bolt 220 and embedded in the groove 45 of the column 40A. The drift pin 60A penetrates the through hole 46 of the upper end 42 of the column 40A and the through hole of the connecting hardware 90A, and fixes the connecting hardware 90A and the upper end 42 of the column 40A. The column 40A is fixed to the connecting bolt 220 via the drift pin 60A and the connecting hardware 90A. A nut 22 is tightened to the upper end of the connecting bolt 220, and the connecting bolt 220 is fixed to the beam 210. The washer 70A receives the connecting hardware 90A from above.

[0123] The metal plate 55B is disposed so as to cover the upper surface 212 of the beam 210. The metal plate 55B is disposed at a position overlapping with the pillar 40A when viewed in the Z-axis direction. By tightening the nut 22, the metal plate 55B is pressed against the beam 210.

[0124] [Actions and Effects of the Beam-Column Joint Structure 200F According to the Ninth Embodiment] The column-beam joint structure 200F according to the ninth embodiment has the same effects as those of the column-beam joint structure 200 according to the fourth embodiment.

[0125] According to this embodiment, the tensile force acting on the column 40A is transmitted to the connection hardware 90A via the drift pin 60A, and the tensile force transmitted to the connection hardware 90A is transmitted to the beam 210 via the connecting bolt 220. According to this embodiment, the compressive force acting on the column 40A is transmitted to the beam 210 via the upper surface 44 of the column 40A. Furthermore, according to this embodiment, a part of the compressive force acting on the column 40A is transmitted to the connection hardware 90A via the drift pin 60A, and the compressive force transmitted to the connection hardware 90A is transmitted to the washer 70A fixed to the connecting bolt 220. The compressive force transmitted to the washer 70A is transmitted to the beam 210 via the connecting bolt 220. In this way, the compressive force acting on the column 40A is transmitted to the connecting bolt 220 via the washer 70A, thereby reducing the compressive force acting from the column 40A to the lower surface 211 of the beam 210. As a result, the compressive strength of the column-beam joint structure 200F can be improved.

[0126] In addition, the present invention is not limited to the configuration shown here, and may be implemented in other embodiments in which other components are combined with the configurations and the like of the above-mentioned embodiment. In this regard, the present invention may be modified within the scope of the gist of the present invention, and may be appropriately determined according to the application form.

[0127] In the above embodiment, the washers 70, 70A, and 70B are exemplified as the compression force receiving members, but the compression force receiving members are not limited to the washers 70, 70A, and 70B. For example, the compression force receiving members may be nuts fixed to the anchor bolts 20, or other members. The compression force receiving members may be members fixed to the anchor bolts 20 or the connecting bolts 220, and may be members capable of transmitting the compression force acting on the columns 40, 40A, and 40B to the anchor bolts 20 or the connecting bolts 220. The compression force acting on the column 40 may be transmitted to the compression force receiving members via, for example, the connecting metal fittings 50 and 90, the metal plate 55, and the like. [Explanation of symbols]

[0128] 100,100B,100C: Column base joint structure 10: Basics 20: Anchor bolt 30: Foundation 40: Pillar (wooden pillar) 50: Connection hardware 50A: Connection hardware (first connection hardware) 50B: Connection hardware (second connection hardware) 55,55A,55B: Metal plate 60: Drift pin (rod-shaped fixing device) 60A: Drift pin (first rod-shaped fixture) 60B: Drift pin (second rod-shaped fixture) 70: Washer (compression force receiving member) 70A: Washer (first compression force receiving member) 70B: Washer (second compression force receiving member) 71:Cylinder part 72: Washer part 90: Connection hardware 90A: Connection hardware (first connection hardware) 90B: Connection hardware (second connection hardware) 200,200B,200C,200D,200E,200F: Column beam joint structure 210: Beam 220: Connecting bolt X:X-axis direction Y: Y-axis direction Z: Z-axis direction

Claims

1. A column base joint structure that joins the lower end of a wooden column to a foundation, An anchor bolt embedded in the foundation and protruding upward; a base that is placed on the foundation, has a through hole through which the anchor bolt is inserted, extends horizontally, and supports the wooden pole; A compression force receiving member attached to the anchor bolt and receiving the compression force of the wooden pole; a connecting hardware that is attached to the anchor bolt at a position above the compression force receiving member and has a through hole through which a rod-shaped fixing device is inserted, A groove into which the connecting metal fitting is embedded and a through hole into which the rod-shaped fixing tool is inserted are formed at the lower end of the wooden pole, The anchor bolt protrudes above the upper surface of the compression force receiving member and the base, The connecting metal fitting is fixed to the upper end of the anchor bolt and embedded in the groove of the wooden pole, The rod-shaped fixing device is inserted through the through hole of the lower end of the wooden pole and the through hole of the connecting metal fitting to fix the connecting metal fitting and the lower end of the wooden pole, The wooden pole is fixed to the anchor bolt via the rod-shaped fixing device and the connecting metal fitting, A column base joint structure characterized in that the compression force receiving member supports the connecting metal from below.

2. The compression force receiving member is A cylindrical portion having an internal thread formed therein and attached to the anchor bolt; a washer portion extending radially outward from the cylindrical portion, The column base joint structure according to claim 1, characterized in that the washer portion receives the connecting metal from below.

3. Further comprising a metal plate disposed between the lower surface of the wooden pole and the upper surface of the base; 3. The column base joint structure according to claim 1, wherein the compression force receiving member supports the connecting metal from below via the metal plate.

4. A column-beam joint structure for joining a lower end of a wooden column to a wooden beam, A metal plate having a through hole and disposed on a lower surface of the wooden beam; A connecting bolt that passes through the through hole of the metal plate and the through hole of the wooden beam and protrudes above the wooden beam; A compression force receiving member attached to the connecting bolt and receiving a compression force of the wooden pole; a connecting metal fitting attached to the connecting bolt at a position above the compression force receiving member and having a through hole through which a rod-shaped fastener is inserted; a nut disposed on the lower surface of the metal plate and attached to a lower end of the connecting bolt, A groove into which the connecting metal fitting is embedded and a through hole into which the rod-shaped fixing tool is inserted are formed at the lower end of the wooden pole, The connecting bolt protrudes above the wooden beam, The connecting metal fitting is fixed to the upper end of the connecting bolt and embedded in the groove of the wooden pole, The rod-shaped fastener is inserted through the through hole of the lower end of the wooden pole and the through hole of the connecting metal fitting to fix the connecting metal fitting and the lower end of the wooden pole; The wooden pole is fixed to the connecting bolt via the rod-shaped fastener and the connecting metal fitting, The nut is fastened to the lower end of the connecting bolt, and the connecting bolt is fixed to the wooden beam. A column-beam joint structure characterized in that the compression force receiving member supports the connecting metal from below.

5. A column-beam joint structure for joining an upper end of a wooden column to a wooden beam, A metal plate having a through hole and disposed on an upper surface of the wooden beam; A connecting bolt that passes through the through hole of the metal plate and the through hole of the wooden beam and protrudes downward from the wooden beam; A compression force receiving member attached to the connecting bolt and receiving a compression force of the wooden pole; a connecting metal fitting attached to the connecting bolt at a position lower than the compression force receiving member and having a through hole through which a rod-shaped fastener is inserted; a nut disposed on the upper surface of the metal plate and attached to an upper end of the connecting bolt, A groove into which the connecting metal fitting is embedded and a through hole into which the rod-shaped fixing tool is inserted are formed at the upper end of the wooden pole, The connecting bolt protrudes downward from the wooden beam, The connecting metal fitting is fixed to the lower end of the connecting bolt and embedded in the groove of the wooden pole, The rod-shaped fixing device is inserted through the through hole of the upper end of the wooden pole and the through hole of the connecting metal fitting to fix the connecting metal fitting and the upper end of the wooden pole, The wooden pole is fixed to the connecting bolt via the rod-shaped fastener and the connecting metal fitting, The nut is fastened to the upper end of the connecting bolt, and the connecting bolt is fixed to the wooden beam. A column-beam joint structure characterized in that the compression force receiving member supports the connecting metal from above.

6. A column-beam joint structure that joins an upper end of a first wooden column to a wooden beam and a lower end of a second wooden column, A connecting bolt that passes through a through hole of the wooden beam and protrudes above and below the wooden beam; A first compression force receiving member attached to the connecting bolt and receiving a compression force of the first wooden pole; A second compression force receiving member attached to the connecting bolt and receiving the compression force of the second wooden pole; a first connecting metal member attached to the connecting bolt at a position lower than the first compression force receiving member and having a through hole through which a first rod-shaped fastener is inserted; a second connecting metal member attached to the connecting bolt at a position above the second compression force receiving member and having a through hole through which a second rod-shaped fastener is inserted, The upper end of the first wooden pole is formed with a groove into which the first connecting metal is embedded and a through hole into which the first rod-shaped fixing device is inserted, The first connecting metal fitting is fixed to a lower end of the connecting bolt and embedded in the groove of the first wooden pole, The first rod-shaped fastener is inserted through the through hole of the upper end of the first wooden pole and the through hole of the first connecting metal, and fixes the first connecting metal and the upper end of the first wooden pole; The first wooden pole is fixed to the connecting bolt via the first rod-shaped fastener and the first connecting metal fitting, The first compression force receiving member receives the first connecting metal from above, The lower end of the second wooden pole is formed with a groove into which the second connecting metal is embedded and a through hole into which the second rod-shaped fixing device is inserted, The second connecting metal fitting is fixed to the upper end of the connecting bolt and embedded in the groove of the second wooden pole, The second rod-shaped fastener is inserted through the through hole of the lower end of the second wooden pole and the through hole of the second connecting metal, and fixes the second connecting metal and the lower end of the second wooden pole; The second wooden pole is fixed to the connecting bolt via the second rod-shaped fastener and the second connecting metal fitting, A column-beam joint structure characterized in that the second compression force receiving member supports the second connecting metal from below.

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