Connection structure between wooden columns and steel beams and building

Abstract

A connecting member that can reduce cross-sectional loss in wooden pillars, a connecting structure between a wooden pillar and a steel cross member, and a building are provided. [Solution] A connecting member 15 connects a wooden column 12 and an iron beam 13. The connecting member 15 includes a column connecting portion 50 connected to a first side surface 12a of the wooden column 12, a first beam connecting portion 51 and a second beam connecting portion 52 to which the iron beam 13 is connected, a first connecting portion 53 connecting the column connecting portion 50 to the first beam connecting portion 51, and a second connecting portion 54 connecting the column connecting portion 50 to the second beam connecting portion 52. The second beam connecting portion 52 is aligned with the first beam connecting portion 51 via a gap G. The column connecting portion 50 has a plurality of column connecting holes 50a through which first column connecting bolts B11 are inserted into first column through holes 21 in the wooden column 12. The plurality of column connecting holes 50a are arranged in a row and overlap the gap G when viewed from the insertion direction of the first column connecting bolts B11 into the column connecting holes 50a.

Description

[Technical Field]

[0001] This disclosure ,tree Connection structure between steel columns and steel beams influence and buildings. [Background technology]

[0002] Non-Patent Document 1 discloses a connection structure between a wooden column and a steel beam. The wooden column and the steel beam are connected by a T-shaped metal fitting and two splice plates. The T-shaped metal fitting has a first plate placed on the side of the wooden column and a second plate extending from the first plate in the thickness direction of the first plate. The first plate has a plurality of column connection holes in two rows. The wooden column has a plurality of column through-holes in two rows. The T-shaped metal fitting is connected to the wooden column by nuts being engaged with bolts inserted into the column through-holes of the wooden column and the column connection holes of the T-shaped metal fitting. [Prior art documents] [Non-patent literature]

[0003] [Non-Patent Document 1] Tatsumi Co., Ltd., TATSUMI, website on the Internet, searched on September 13, 2024,<URL:https: / / www.tatsumi-web.com / product / tn-wolsh-beam / > Summary of the Invention [Problem to be solved by the invention]

[0004] The greater the number of post through-holes provided in a wooden post, the greater the cross-sectional loss of the wooden post, thereby reducing the strength of the wooden post. [Means for solving the problem]

[0005] (1) A connecting member that solves the above problem is a connecting member that connects a wooden column and an iron cross member, and includes a column connecting portion that is connected to the side of the wooden column, a first cross member connecting portion that connects the iron cross member, a second cross member connecting portion that connects the iron cross member and is aligned with the first cross member connecting portion through a gap, a first connecting portion that connects the column connecting portion and the first cross member connecting portion, and a second connecting portion that connects the column connecting portion and the second cross member connecting portion, and the column connecting portion has a plurality of column connecting holes through which column connecting bolts that are inserted into through holes provided in the wooden column are inserted, and the plurality of column connecting holes are arranged in a row and overlap the gap when viewed from the insertion direction of the column connecting bolts into the column connecting holes.

[0006] With this configuration, the multiple column connection holes overlap with the gap between the first cross member connection part and the second cross member connection part when viewed from the insertion direction of the column connection bolts into the column connection holes, so the column connection parts can be connected to the wooden column through the gap. Also, because the multiple column connection holes are arranged in a row, the row of through holes provided in the wooden column can also be arranged in a row. Therefore, cross-sectional loss of the wooden column can be reduced compared to the conventional technology in which two rows of through holes are provided in the wooden column.

[0007] (2) A connection structure between a wooden pillar and an iron cross member that solves the above problem is a connection structure between a wooden pillar and an iron cross member in which the wooden pillar and the iron cross member are connected by a connecting member, and the connecting member is the connecting member described above in (1).

[0008] (3) In the connection structure between the wooden column and the steel beam described in (2) above, the steel beam has a web, and the steel beam and the connecting member are connected by an auxiliary connecting member, which is composed of a first angle member arranged on a first surface of the web and connecting the first beam connecting portion to the web, and a second angle member arranged on a second surface of the web opposite the first surface and connecting the second beam connecting portion to the web.

[0009] According to this configuration, the configuration of the connecting member can be simplified compared to when the connecting member is configured so that the steel beam can be directly connected to the connecting member, making it easier to manufacture the connecting member. Furthermore, since the web of the steel beam is sandwiched between the first angle member and the second angle member, the connection state of the auxiliary connecting member to the steel beam is stabilized.

[0010] (4) In the connection structure between the wooden column and the steel beam described in (2) above, the steel beam has an end plate located at the end in the direction in which the steel beam extends, and the end plate is connected to each of the first beam connection portion and the second beam connection portion. According to this configuration, the steel beams can be directly connected to the connecting members.

[0011] (5) A building that solves the above problems has a connection structure between a wooden pillar and a steel beam according to any one of (2) to (4) above. [Effects of the Invention]

[0012] The connecting member, connecting structure between a wooden column and a steel cross member, and building disclosed herein can reduce cross-sectional loss in the wooden column. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a perspective view showing a connection structure between a wooden post and an iron beam in an embodiment. [Figure 2] FIG. 1 is an exploded perspective view showing a connection structure between a wooden post and an iron beam in an embodiment. [Figure 3] FIG. 1 is a plan view showing a connection structure between a wooden post and an iron beam in an embodiment. [Figure 4] 4 is a cross-sectional view of the connection structure between a wooden pillar and an iron beam taken along line 4-4 in FIG. 3. [Figure 5] FIG. 10 is a perspective view showing an iron beam in a modified example. [Figure 6] FIG. 10 is a plan view showing a connection structure between a wooden pillar and an iron beam in a modified example. [Figure 7]FIG. 1 is an exploded perspective view showing a conventional connection structure between a wooden post and an iron beam. [Figure 8] FIG. 1 is a plan view showing a conventional connection structure between a wooden post and an iron beam. DETAILED DESCRIPTION OF THE INVENTION

[0014] The connecting member 15, the connecting structure between the wooden pillar 12 and the steel beam 13, and the building 10 of this embodiment will be described with reference to FIGS. 1 and 2, a building 10 includes wooden columns 12, steel beams 13 as cross members, and two wooden beams 14. When distinguishing between the two wooden beams 14, one wooden beam 14 is referred to as a first wooden beam 14a, and the other wooden beam 14 is referred to as a second wooden beam 14b.

[0015] As shown in FIG. 3, the wooden post 12 of this embodiment has a square shape in a plan view. The wooden post 12 may also have a rectangular shape in a plan view. The wooden post 12 has a first side surface 12a, a second side surface 12b, a third side surface 12c, and a fourth side surface 12d. The second side surface 12b is the surface opposite the first side surface 12a. The third side surface 12c and the fourth side surface 12d are surfaces perpendicular to the first side surface 12a and the second side surface 12b. The fourth side surface 12d is the surface opposite the third side surface 12c. In the following description, the horizontal direction perpendicular to the first side surface 12a and the second side surface 12b is referred to as a first direction X1. The horizontal direction along the first side surface 12a and the second side surface 12b is referred to as a second direction X2.

[0016] As shown in FIG. 4, the wooden post 12 is provided with a plurality of first post through holes 21 as through holes. The plurality of first post through holes 21 are arranged in a row at equal intervals in the vertical direction Z. Each first post through hole 21 penetrates the wooden post 12 in the first direction X1. The wooden post 12 is provided with a plurality of second post through holes 22. The plurality of second post through holes 22 are arranged in a row at equal intervals in the vertical direction Z. Each second post through hole 22 penetrates the wooden post 12 in the second direction X2. The first post through holes 21 and the second post through holes 22 are arranged alternately in the vertical direction Z.

[0017] <Connection structure between wooden pillar 12 and steel beam 13> 3 and 4, the iron beam 13 is connected to the first side surface 12a of the wooden pillar 12 by a connecting member 15 and an auxiliary connecting member 16. The iron beam 13 extends in a first direction X1.

[0018] The steel beam 13 of this embodiment is made of an H-shaped steel. The steel beam 13 has a web 30, an upper flange 31 provided at the upper end of the web 30, and a lower flange 32 provided at the lower end of the web 30. The web 30 has a first surface 30a and a second surface 30b. The first surface 30a and the second surface 30b are surfaces perpendicular to the thickness direction of the web 30. The second surface 30b is the surface opposite to the first surface 30a.

[0019] 2, the web 30 of this embodiment is provided with a plurality of iron beam through holes 33. The plurality of iron beam through holes 33 are arranged in a row at equal intervals in the vertical direction Z. Each iron beam through hole 33 penetrates the web 30 in the thickness direction.

[0020] The connection member 15 has a column connection portion 50, a first beam connection portion 51 as a first cross member connection portion, a second beam connection portion 52 as a second cross member connection portion, a first connection portion 53, and a second connection portion 54. The connection member 15 is formed, for example, by bending a single steel plate. The column connection portion 50, the first beam connection portion 51, the second beam connection portion 52, the first connection portion 53, and the second connection portion 54 are each plate-shaped.

[0021] The pillar connecting portion 50 is a portion that is connected to the side surface of the wooden pillar 12. The pillar connecting portion 50 of this embodiment is connected to the first side surface 12a of the wooden pillar 12. 4, the column connecting portion 50 is provided with a plurality of column connecting holes 50a. The plurality of column connecting holes 50a are arranged in a row at equal intervals in the vertical direction Z. Each column connecting hole 50a penetrates the column connecting portion 50 in the thickness direction.

[0022] As shown in Figures 3 and 4, the column connecting portion 50 is disposed on the first side surface 12a of the wooden column 12 so that the column connecting hole 50a overlaps with the first column through-hole 21. The shank of a first column connecting bolt B11, which serves as a column connecting bolt, is inserted into the first column through-hole 21 and the column connecting hole 50a. In this embodiment, the first column connecting bolt B11 is inserted from the second side surface 12b toward the first side surface 12a of the wooden column 12. A first column connecting nut N11 is engaged with the first column connecting bolt B11. This connects the column connecting portion 50 of the connection member 15 to the first side surface 12a of the wooden column 12.

[0023] The first beam connecting portion 51 and the second beam connecting portion 52 are portions to which the steel beams 13 are connected. In this embodiment, the steel beams 13 are indirectly connected to the first beam connecting portion 51 and the second beam connecting portion 52 via auxiliary connecting members 16.

[0024] The first beam connecting portion 51 and the second beam connecting portion 52 are disposed at a distance from the column connecting portion 50 in the first direction X1. The first beam connecting portion 51 and the second beam connecting portion 52 face the surface of the column connecting portion 50 opposite the surface that faces the first side surface 12a of the wooden column 12. The second beam connecting portion 52 is aligned with the first beam connecting portion 51 in the second direction X2 with a gap G interposed therebetween. The dimension of the gap G in the second direction X2 is set to a dimension that allows the insertion of a tool for locking the first column connecting nut N11 to the first column connecting bolt B11.

[0025] The multiple column connecting holes 50a arranged in a row overlap with the gap G when viewed from the insertion direction of the first column connecting bolt B11 into the column connecting hole 50a. In this embodiment, the insertion direction of the first column connecting bolt B11 into the column connecting hole 50a is the first direction X1. Therefore, the multiple column connecting holes 50a arranged in a row overlap with the gap G when viewed from the first direction X1.

[0026] 2, the first beam connecting portion 51 is provided with a plurality of first beam connecting holes 51a. In this embodiment, the plurality of first beam connecting holes 51a are arranged in a row at equal intervals in the vertical direction Z. The second beam connecting portion 52 is provided with a plurality of second beam connecting holes 52a. In this embodiment, the plurality of second beam connecting holes 52a are arranged in a row at equal intervals in the vertical direction Z.

[0027] The first connection portion 53 connects the column connection portion 50 and the first beam connection portion 51 in the first direction X1. In this embodiment, the first connection portion 53 connects a first end portion of the column connection portion 50 in the second direction X2 to an end portion of the first beam connection portion 51 in the second direction X2, the end portion being located on the opposite side of the gap G. The second connection portion 54 connects the column connection portion 50 and the second beam connection portion 52 in the first direction X1. In this embodiment, the second connection portion 54 connects a second end portion of the column connection portion 50 in the second direction X2 to an end portion of the second beam connection portion 52 in the second direction X2, the end portion being located on the opposite side of the gap G.

[0028] The auxiliary connecting member 16 connects the connecting member 15 and the steel beam 13. The auxiliary connecting member 16 in this embodiment is composed of a first angle member 61 and a second angle member 62. The first angle member 61 and the second angle member 62 each have a flat plate-shaped first angle component portion 63 and a flat plate-shaped second angle component portion 64. The second angle component portion 64 is perpendicular to the first angle component portion 63.

[0029] The first angle component 63 is provided with a plurality of first auxiliary connecting holes 63a. The plurality of first auxiliary connecting holes 63a are arranged in a row at equal intervals in the vertical direction Z. The second angle component 64 is provided with a plurality of second auxiliary connecting holes 64a. The plurality of second auxiliary connecting holes 64a are arranged in a row at equal intervals in the vertical direction Z.

[0030] As shown in Figure 3, the first angle forming portion 63 of the first angle member 61 is arranged on the first surface 30a of the web 30 so that the first auxiliary connecting hole 63a overlaps the steel beam through hole 33. The first angle forming portion 63 of the second angle member 62 is arranged on the second surface 30b of the web 30 so that the first auxiliary connecting hole 63a overlaps the steel beam through hole 33. The web 30 is located between the first angle forming portion 63 of the first angle member 61 and the first angle forming portion 63 of the second angle member 62.

[0031] A first auxiliary bolt B21 is inserted through the first auxiliary connecting hole 63a of the first angle member 61, the steel beam through hole 33 in the web 30, and the first auxiliary connecting hole 63a of the second angle member 62. A first auxiliary nut N21 is engaged with the first auxiliary bolt B21. This connects the first angle member 61 and the second angle member 62 to the web 30. Therefore, the auxiliary connecting member 16 is connected to the steel beam 13.

[0032] The second angle forming portion 64 of the first angle member 61 is arranged in the first beam connecting portion 51 so that the second auxiliary connecting hole 64a overlaps the first beam connecting hole 51a. A second auxiliary bolt B22 is inserted through the second auxiliary connecting hole 64a of the first angle member 61 and the first beam connecting hole 51a of the first beam connecting portion 51. A second auxiliary nut N22 is engaged with the second auxiliary bolt B22. This connects the first angle member 61 to the first beam connecting portion 51.

[0033] The second angle forming portion 64 of the second angle member 62 is arranged in the second beam connecting portion 52 so that the second auxiliary connecting hole 64a overlaps the second beam connecting hole 52a. A second auxiliary bolt B22 is inserted through the second auxiliary connecting hole 64a of the second angle member 62 and the second beam connecting hole 52a of the second beam connecting portion 52. A second auxiliary nut N22 is engaged with the second auxiliary bolt B22. This connects the second angle member 62 to the second beam connecting portion 52. Therefore, the auxiliary connecting member 16 is connected to the connecting member 15.

[0034] <Connection structure between wooden pillar 12 and wooden beam 14> The first wooden beam 14a is connected to the third side surface 12c of the wooden pillar 12 by a first connecting member 17a. The second wooden beam 14b is connected to the fourth side surface 12d of the wooden pillar 12 by a second connecting member 17b. The first wooden beam 14a and the second wooden beam 14b each extend in the second direction X2. The wooden pillar 12 is located between the first wooden beam 14a and the second wooden beam 14b in the second direction X2.

[0035] The wooden beam 14 is made of a square timber. Two slits 41 are provided on the end surface 40 of the wooden beam 14 in the second direction X2. The two slits 41 are arranged side by side with a gap in between in the first direction X1. The portion of the end surface 40 of the wooden beam 14 located between the two slits 41 is recessed relative to the portions of the end surface 40 of the wooden beam 14 located on both sides of the two slits 41.

[0036] The wooden beam 14 has a plurality of wooden beam through holes 42. Note that only one wooden beam through hole 42 is shown in Fig. 3. The plurality of wooden beam through holes 42 are arranged in a row at equal intervals in the vertical direction Z. Each wooden beam through hole 42 penetrates the wooden beam 14 in the first direction X1 so as to pass through two slits 41.

[0037] The first connecting member 17a and the second connecting member 17b each have a base 70 and two extending portions 71 extending from the base 70. The two extending portions 71 are perpendicular to the base 70. The two extending portions 71 extend parallel to each other. The first connecting member 17a and the second connecting member 17b are each formed by bending a single steel plate, for example. The base 70 and the two extending portions 71 are each plate-shaped.

[0038] The base 70 is provided with a plurality of bolt insertion holes 70a. Note that only one bolt insertion hole 70a is shown in FIG. 3. The plurality of bolt insertion holes 70a are arranged in a row at equal intervals in the up-down direction Z. Each bolt insertion hole 70a penetrates the base 70 in the thickness direction. Each extension 71 is provided with a plurality of pin insertion holes 71a. Note that only one pin insertion hole 71a is shown in FIG. 3. The plurality of pin insertion holes 71a are arranged in a row at equal intervals in the up-down direction Z. Each pin insertion hole 71a penetrates the extension 71 in the thickness direction.

[0039] The base 70 of the first connecting member 17a is disposed on the third side surface 12c of the wooden pillar 12 so that the bolt insertion hole 70a overlaps with the second pillar through-hole 22. The base 70 of the second connecting member 17b is disposed on the fourth side surface 12d of the wooden pillar 12 so that the bolt insertion hole 70a overlaps with the second pillar through-hole 22.

[0040] A second-post connecting bolt B12 is inserted through the bolt insertion hole 70a of the first connecting member 17a, the second-post through-hole 22 of the wooden post 12, and the bolt insertion hole 70a of the second connecting member 17b. A second-post connecting nut N12 is engaged with the second-post connecting bolt B12. This connects the first connecting member 17a and the second connecting member 17b to the wooden post 12.

[0041] The two extension portions 71 of the first connecting member 17a are inserted into the two slits 41 of the first wooden beam 14a so that the pin insertion holes 71a overlap with the wooden beam through holes 42. A draft pin P is inserted into the two pin insertion holes 71a and the wooden beam through holes 42. This connects the first connecting member 17a to the first wooden beam 14a.

[0042] The two extension portions 71 of the second connecting member 17b are inserted into the two slits 41 of the second wooden beam 14b so that the pin insertion holes 71a overlap with the wooden beam through holes 42. A draft pin P is inserted into the two pin insertion holes 71a and the wooden beam through holes 42. This connects the second connecting member 17b to the second wooden beam 14b.

[0043] <Method of connecting wooden pillar 12 and steel beam 13> The work of connecting the wooden pillars 12 and the steel beams 13 is carried out by workers. First, the worker connects the wooden column 12 and the connecting member 15. Specifically, the worker places the column connecting portion 50 of the connecting member 15 on the first side surface 12a of the wooden column 12 so that the column connecting hole 50a of the connecting member 15 overlaps with the first column through hole 21 of the wooden column 12. The worker inserts the shank of the first column connecting bolt B11 through the first column through hole 21 and the column connecting hole 50a. The tip of the shank of the first column connecting bolt B11 protrudes from the surface of the column connecting portion 50 opposite the surface facing the wooden column 12. As described above, a gap G is provided between the first beam connecting portion 51 and the second beam connecting portion 52. The worker inserts a tool for locking the first column connection nut N11 onto the first column connecting bolt B11 into the gap G, thereby locking the first column connection nut N11 onto the first column connecting bolt B11. This connects the wooden post 12 and the connecting member 15 together.

[0044] Next, the worker connects the steel beam 13 and the auxiliary connecting member 16. Specifically, the worker places the first angle forming portion 63 of the first angle member 61 on the first surface 30a of the web 30 of the steel beam 13 so that the first auxiliary connecting hole 63a of the first angle member 61 of the auxiliary connecting member 16 overlaps with the iron beam through hole 33 of the steel beam 13. The worker places the first angle forming portion 63 of the second angle member 62 on the second surface 30b of the web 30 of the steel beam 13 so that the first auxiliary connecting hole 63a of the second angle member 62 of the auxiliary connecting member 16 overlaps with the iron beam through hole 33 of the steel beam 13. The worker inserts the first auxiliary bolt B21 through the first auxiliary connecting hole 63a of the first angle member 61, the iron beam through hole 33, and the first auxiliary connecting hole 63a of the second angle member 62, and then locks the first auxiliary nut N21 onto the first auxiliary bolt B21. This connects the steel beam 13 to the auxiliary connecting member 16. Note that the connecting work between the steel beam 13 and the auxiliary connecting member 16 may be performed before the connecting work between the wooden column 12 and the connecting member 15.

[0045] Next, the worker connects the connecting member 15 and the auxiliary connecting member 16. More specifically, the worker places the second angle forming portion 64 of the first angle member 61 on the first beam connecting portion 51 so that the second auxiliary connecting hole 64a of the first angle member 61 of the auxiliary connecting member 16 overlaps with the first beam connecting hole 51a of the first beam connecting portion 51 of the connecting member 15. The worker inserts the second auxiliary bolt B22 into the second auxiliary connecting hole 64a and the first beam connecting hole 51a, and then engages the second auxiliary nut N22 with the second auxiliary bolt B22. This connects the connecting member 15 and the first angle member 61 of the auxiliary connecting member 16.

[0046] The worker places the second angle forming portion 64 of the second angle member 62 on the second beam connecting portion 52 so that the second auxiliary connecting hole 64a of the second angle member 62 of the auxiliary connecting member 16 overlaps with the second beam connecting hole 52a of the second beam connecting portion 52 of the connecting member 15. The worker inserts the second auxiliary bolt B22 into the second auxiliary connecting hole 64a and the second beam connecting hole 52a, and then engages the second auxiliary nut N22 with the second auxiliary bolt B22. This connects the connecting member 15 and the second angle member 62 of the auxiliary connecting member 16. The connecting member 15 connected to the wooden column 12 and the auxiliary connecting member 16 connected to the steel beam 13 are connected to each other, thereby connecting the wooden column 12 and the steel beam 13.

[0047] [Operation of this embodiment] The operation of this embodiment will be described. As shown in Figures 7 and 8, a conventional wooden pillar 12 and an iron beam 13 are connected by a T-shaped metal fitting 18 and two splice plates 19. Note that the two splice plates 19 and the iron beam 13 are not shown in Figure 7. The T-shaped metal fitting 18 has a first plate 81 and a second plate 82 that is perpendicular to the first plate 81.

[0048] The first plate 81 is a portion that is connected to the first side surface 12a of the wooden post 12. A plurality of post connecting holes 81a is provided in a portion of the first plate 81 that is located on one side of the second plate 82. The plurality of post connecting holes 81a are arranged at equal intervals in the vertical direction Z. Furthermore, a portion of the first plate 81 that is located on the other side of the second plate 82 is provided with post connecting holes 81b. The plurality of post connecting holes 81b are arranged at equal intervals in the vertical direction Z. In other words, the first plate 81 of the T-shaped metal fitting 18 is provided with two rows of post connecting holes 81a, 81b.

[0049] The conventional wooden post 12 is provided with a plurality of first post through holes 21a and a plurality of first post through holes 21b. The plurality of first post through holes 21a are arranged at equal intervals in the vertical direction Z. The plurality of first post through holes 21b are arranged at equal intervals in the vertical direction Z. The row of first post through holes 21a and the row of first post through holes 21b are aligned at an interval in the second direction X2. The row of first post through holes 21a is located closer to the third side surface 12c of the wooden post 12 than the row of first post through holes 21b. In other words, the conventional wooden post 12 is provided with two rows of first post through holes 21a, 21b.

[0050] As shown in FIG. 8 , the first plate 81 is arranged on the first side surface 12a of the wooden post 12 so that the post connecting hole 81a overlaps the first post through hole 21a and the post connecting hole 81b overlaps the first post through hole 21b. A first post connecting bolt B11 is inserted into the post connecting hole 81a and the first post through hole 21a. A first post connecting nut N11 is engaged with the first post connecting bolt B11. A first post connecting bolt B11 is inserted into the post connecting hole 81b and the first post through hole 21b. A first post connecting nut N11 is engaged with the first post connecting bolt B11. In this way, the first plate 81 is connected to the first side surface 12a of the wooden post 12.

[0051] The two splice plates 19 are arranged to sandwich the web 30 of the steel beam 13. The two splice plates 19 are connected to the steel beam 13 by nuts N being engaged with bolts B that pass through the two splice plates 19 and the web 30. The two splice plates 19 are also arranged to sandwich the second plate 82 of the T-shaped metal fitting 18. The two splice plates 19 are connected to the second plate 82 of the T-shaped metal fitting 18 by nuts N being engaged with bolts B that pass through the two splice plates 19 and the second plate 82.

[0052] When the wooden pillar 12 and the steel beam 13 are connected by the T-shaped metal fitting 18 in this way, the T-shaped metal fitting 18 has two rows of pillar connection holes 81a, 81b, and therefore the wooden pillar 12 also has two rows of first pillar through holes 21a, 21b. In this case, the cross-sectional loss of the wooden pillar 12 becomes large, reducing the strength of the wooden pillar 12. Furthermore, because the distance from the first pillar through hole 21a to the third side surface 12c of the wooden pillar 12 and the distance from the first pillar through hole 21b to the fourth side surface 12d of the wooden pillar 12 become small, it may be difficult to increase the diameter of the first pillar through holes 21a, 21b, i.e., the hole diameter of the first pillar connecting bolt B11.

[0053] In contrast, in this embodiment, the wooden pillar 12 and the steel beam 13 are connected by a connecting member 15. The connecting member 15 includes a pillar connecting portion 50, a first beam connecting portion 51, a second beam connecting portion 52, a first connecting portion 53, and a second connecting portion 54. The pillar connecting portion 50 is connected to the first side surface 12a of the wooden pillar 12. The steel beam 13 is connected to the first beam connecting portion 51 and the second beam connecting portion 52. The second beam connecting portion 52 is aligned with the first beam connecting portion 51 across a gap G. The first connecting portion 53 connects the pillar connecting portion 50 and the first beam connecting portion 51. The second connecting portion 54 connects the pillar connecting portion 50 and the second beam connecting portion 52.

[0054] The column connecting portion 50 has a plurality of column connecting holes 50a. The column connecting portion 50 is connected to the wooden column 12 by a first column connecting bolt B11 inserted through the column connecting hole 50a and the first column through hole 21 of the wooden column 12. The plurality of column connecting holes 50a are arranged in a row. When viewed from the insertion direction of the first column connecting bolt B11 into the column connecting hole 50a, the plurality of column connecting holes 50a are aligned with the gap G provided between the first beam connecting portion 51 and the second beam connecting portion 52.

[0055] Thus, in this embodiment, the multiple column connecting holes 50a overlap with the gap G when viewed from the insertion direction of the first column connecting bolt B11 into the column connecting hole 50a, so that the column connecting part 50 can be connected to the wooden column 12 through the gap G. Specifically, with the first column connecting bolt B11 inserted through the first column through-hole 21 and the column connecting hole 50a, a tool for locking the first column connecting nut N11 onto the first column connecting bolt B11 can be inserted through the gap G to lock the first column connecting nut N11 onto the first column connecting bolt B11.

[0056] Furthermore, because the multiple column connecting holes 50a are arranged in a row, the row of the first column through holes 21 provided in the wooden column 12 can also be arranged in a row. Therefore, compared to the conventional technique in which the wooden column 12 is provided with two rows of first column through holes 21a, 21b, the cross-sectional loss of the wooden column 12 can be reduced. Furthermore, the distance from the first column through hole 21 to the third side surface 12c of the wooden column 12 and the distance from the first column through hole 21 to the fourth side surface 12d of the wooden column 12 are greater than the distances from the first column through hole 21a to the third side surface 12c of the wooden column 12 and from the first column through hole 21b to the fourth side surface 12d of the wooden column 12 in the conventional technique. Therefore, it is possible to increase the diameter of the first column through hole 21, i.e., the hole diameter of the first column connecting bolt B11.

[0057] [Effects of this embodiment] The effects of this embodiment will be described. (1) The connecting member 15 includes a column connecting portion 50 connected to the first side surface 12a of the wooden column 12, and a first beam connecting portion 51 and a second beam connecting portion 52 to which the steel beam 13 is connected. The second beam connecting portion 52 is aligned with the first beam connecting portion 51 with a gap G interposed therebetween. The column connecting portion 50 has a plurality of column connecting holes 50a. The column connecting portion 50 is connected to the wooden column 12 by first column connecting bolts B11 inserted through the column connecting holes 50a and the first column through holes 21 of the wooden column 12. The plurality of column connecting holes 50a are arranged in a row and overlap with the gap G when viewed from the insertion direction of the first column connecting bolts B11 into the column connecting holes 50a.

[0058] According to this configuration, the multiple column connecting holes 50a overlap with the gap G when viewed from the insertion direction of the first column connecting bolt B11 into the column connecting holes 50a, so the column connecting part 50 can be connected to the wooden column 12 through the gap G. Furthermore, because the multiple column connecting holes 50a are arranged in a row, the row of the first column through holes 21 provided in the wooden column 12 can also be arranged in a row. Therefore, compared to the prior art where the wooden column 12 is provided with two rows of first column through holes 21a, 21b, the cross-sectional loss of the wooden column 12 can be reduced.

[0059] (2) The steel beam 13 has a web 30. The steel beam 13 and the connection member 15 are connected by an auxiliary connection member 16. The auxiliary connection member 16 is composed of a first angle member 61 and a second angle member 62. The first angle member 61 is arranged on the first surface 30a of the web 30. The first angle member 61 connects the first beam connecting portion 51 and the web 30. The second angle member 62 is arranged on the second surface 30b, which is the surface opposite to the first surface 30a of the web 30. The second angle member 62 connects the second beam connecting portion 52 and the web 30.

[0060] According to this configuration, the configuration of the connecting member 15 can be simplified compared to when the connecting member 15 is configured so that the steel beam 13 can be directly connected to the connecting member 15, making it easier to manufacture the connecting member 15.

[0061] Furthermore, since the web 30 of the steel beam 13 is sandwiched between the first angle member 61 and the second angle member 62, the connection state of the auxiliary connecting member 16 to the steel beam 13 is stabilized. (3) As described above, because the multiple column connecting holes 50a are arranged in a row, the row of the first column through holes 21 provided in the wooden column 12 can also be arranged in a row. This increases the distance from the first column through hole 21 to the third side surface 12c of the wooden column 12 and the distance from the first column through hole 21 to the fourth side surface 12d of the wooden column 12 compared to the prior art where the first column through holes 21a, 21b are provided in two rows in the wooden column 12. This makes it possible to increase the diameter of the first column through hole 21, i.e., the hole diameter of the first column connecting bolt B11.

[0062] (4) The arrangement of the column connection holes 50a of the connecting member 15 connecting the wooden column 12 and the steel beam 13 is substantially the same as the arrangement of the bolt insertion holes 70a of the first connecting member 17a and the second connecting member 17b connecting the wooden column 12 and the wooden beam 14, in that they are aligned in a single row. Therefore, the arrangement of the first column through holes 21 provided in the wooden column 12 corresponding to the column connection holes 50a is substantially the same as the arrangement of the second column through holes 22 provided in the wooden column 12 corresponding to the bolt insertion holes 70a, in that they are aligned in a single row. Therefore, the arrangement of the first column through holes 21 and the arrangement of the second column through holes 22 can be made common. Specifically, the hole diameter and hole pitch of the first column through holes 21 can be made equal to the hole diameter and hole pitch of the second column through holes 22. This improves the efficiency of the design of the connection structure between the wooden column 12 and the beam. In addition, the first pillar through hole 21 can be drilled using the same equipment as that used to drill the second pillar through hole 22.

[0063] (5) The iron beam 13 is connected to the auxiliary connecting member 16 by a first auxiliary bolt B21 inserted through the iron beam through-hole 33 of the iron beam 13 and the first auxiliary connecting hole 63a of the auxiliary connecting member 16. The auxiliary connecting member 16 is connected to the connecting member 15 by a second auxiliary bolt B22 inserted through the second auxiliary connecting hole 64a of the auxiliary connecting member 16 and the first beam connecting hole 51a or the second beam connecting hole 52a of the connecting member 15. By adjusting the positions of the first auxiliary bolt B21 and the second auxiliary bolt B22 in the vertical direction Z, the height of the iron beam 13 can be fine-tuned on-site.

[0064] (6) Since the beams extending in the first direction X1 are made of steel beams 13, the length of the beams in the first direction X1 can be increased. <Example of change> The above-described embodiments are examples of possible forms of the connecting member 15, the connection structure between the wooden columns 12 and the steel beams 13, and the building 10, and are not intended to limit the forms. The connecting member 15, the connection structure between the wooden columns 12 and the steel beams 13, and the building 10 may take forms different from those illustrated in the above-described embodiments. Examples of such forms include forms in which part of the configuration of the embodiments is replaced, modified, or omitted, or forms in which a new configuration is added to the embodiments. Modified examples of the embodiments are shown below.

[0065] The steel cross members are not limited to steel beams 13, but may be steel girders. In the above embodiment, the auxiliary connecting member 16 is configured by the first angle member 61 and the second angle member 62, but is not limited to this. As long as the auxiliary connecting member 16 can connect the steel beam 13 and the connecting member 15, the configuration of the auxiliary connecting member 16 may be changed as appropriate. The auxiliary connecting member 16 may be configured by, for example, a T-shaped metal piece.

[0066] 5 and 6, the steel beam 13 may have an end plate 34 located at the end in the extension direction of the steel beam 13. The end plate 34 is provided with a plurality of first beam through holes 34a and a plurality of second beam through holes 34b.

[0067] The multiple first beam through holes 34a are located on one side of the web 30. The multiple first beam through holes 34a are arranged in a row at equal intervals in the vertical direction Z. The multiple second beam through holes 34b are located on the other side of the web 30. The multiple second beam through holes 34b are arranged in a row at equal intervals in the vertical direction Z.

[0068] The iron beam 13 is positioned in the first beam connecting portion 51 and the second beam connecting portion 52 of the connecting member 15 so that the first beam through hole 34a overlaps with the first beam connecting hole 51a and the second beam through hole 34b overlaps with the second beam connecting hole 52a.

[0069] A beam connecting bolt B13 is inserted through the first beam through-hole 34a and the first beam connecting hole 51a. A beam connecting nut N13 is engaged with the beam connecting bolt B13. This connects the end plate 34 of the steel beam 13 to the first beam connecting portion 51 of the connecting member 15.

[0070] A beam connecting bolt B13 is inserted through the second beam through-hole 34b and the second beam connecting hole 52a. A beam connecting nut N13 is engaged with the beam connecting bolt B13. This connects the end plate 34 of the steel beam 13 to the second beam connecting portion 52 of the connecting member 15.

[0071] According to this configuration, the steel beam 13 can be directly connected to the connection member 15 without using the auxiliary connection member 16. The dimensions of the connection member 15 and the auxiliary connection member 16 in the vertical direction Z may be changed as appropriate according to the dimensions of the steel beam 13 in the vertical direction Z.

[0072] In the above embodiment, the first-column connecting bolt B11 was inserted from the second side face 12b toward the first side face 12a of the wooden pillar 12, but it may also be inserted from the first side face 12a toward the second side face 12b of the wooden pillar 12. In this case, to enable the head of the first-column connecting bolt B11 to be inserted into the gap G, the dimension of the gap G in the second direction X2 is set to be larger than the outer diameter of the head of the first-column connecting bolt B11.

[0073] The manner in which the cross members are connected to the wooden pillars 12 may be changed as appropriate. An iron beam 13 or a wooden beam 14 may be connected to the second side surface 12b of the wooden pillar 12.

[0074] An iron beam 13 may be connected to the third side surface 12c of the wooden pillar 12. A cross member does not have to be connected to the third side surface 12c of the wooden pillar 12. An iron beam 13 may be connected to the fourth side surface 12d of the wooden pillar 12. A cross member does not have to be connected to the fourth side surface 12d of the wooden pillar 12.

[0075] <Additional Notes> This specification discloses the following techniques: [Appendix 1] A connecting member that connects a wooden pillar and an iron cross member, comprising: a pillar connecting portion that is connected to the side of the wooden pillar; a first cross member connecting portion to which the iron cross member is connected; a second cross member connecting portion to which the iron cross member is connected and which is aligned with the first cross member connecting portion through a gap; a first connecting portion that connects the pillar connecting portion and the first cross member connecting portion; and a second connecting portion that connects the pillar connecting portion and the second cross member connecting portion, wherein the pillar connecting portion has a plurality of pillar connecting holes through which pillar connecting bolts that are inserted into through holes provided in the wooden pillar are inserted, and the plurality of pillar connecting holes are arranged in a row and overlap the gap when viewed from the direction in which the pillar connecting bolts are inserted into the pillar connecting holes.

[0076] [Appendix 2] A connection structure between a wooden column and an iron cross member, in which the wooden column and the iron cross member are connected by a connecting member, wherein the connecting member is a connecting member as described in Appendix 1.

[0077] [Appendix 3] In the connection structure between a wooden column and a steel beam described in Appendix 2, the steel beam has a web, and the steel beam and the connecting member are connected by an auxiliary connecting member, which is composed of a first angle member that is arranged on a first surface of the web and connects the first beam connecting portion to the web, and a second angle member that is arranged on a second surface of the web opposite the first surface and connects the second beam connecting portion to the web.

[0078] [Appendix 4] In the connection structure between a wooden column and an iron cross member described in Appendix 2, the iron cross member has an end plate located at the end in the direction in which the iron cross member extends, and the end plate is connected to each of the first cross member connection part and the second cross member connection part.

[0079] [Appendix 5] A building having a connection structure between wooden columns and steel cross members described in any one of appendices 2 to 4. [Explanation of symbols]

[0080] 10...building, 12...wooden column, 12a...first side surface as side surface, 13...iron beam as iron cross member, 15...connecting member, 16...auxiliary connecting member, 21...first column through hole as through hole, 30...web, 30a...first surface, 30b...second surface, 34...end plate, 50...column connection portion, 50a...column connecting hole, 51...first beam connection portion as first cross member connection portion, 52...second beam connection portion as second cross member connection portion, 53...first connection portion, 54...second connection portion, B11...first column connecting bolt as column connecting bolt, 61...first angle member, 62...second angle member, G...gap.

Claims

1. A connection structure between a wooden column and an iron cross member, in which the wooden column and the iron cross member are connected by a connecting member that connects the wooden column and the iron cross member, The connecting member is a pillar connecting portion connected to a side surface of the wooden pillar; a first cross member connection portion to which the iron cross member is connected; A second cross member connection portion to which the iron cross member is connected and which is aligned with the first cross member connection portion via a gap; A first connection portion that connects the column connection portion and the first cross member connection portion; A second connection portion that connects the column connection portion and the second cross member connection portion; Equipped with The column connection portion is provided with a plurality of column connection holes through which column connection bolts are inserted to be inserted into through holes provided in the wooden column, The plurality of column connecting holes are arranged in a row and overlap with the gap when viewed from the insertion direction of the column connecting bolt into the column connecting hole, The steel beam has a web, The steel beam and the connecting member are connected by an auxiliary connecting member, The auxiliary connecting member is a first angle member disposed on a first surface of the web and connecting the first cross member connection portion and the web; a second angle member arranged on a second surface of the web opposite to the first surface, the second angle member connecting the second cross member connection portion and the web; This is a connecting structure between wooden columns and steel cross members.

2. A connection structure between a wooden column and an iron cross member, in which the wooden column and the iron cross member are connected by a connecting member that connects the wooden column and the iron cross member, The connecting member is a pillar connecting portion connected to a side surface of the wooden pillar; a first cross member connection portion to which the iron cross member is connected; A second cross member connection portion to which the iron cross member is connected and which is aligned with the first cross member connection portion via a gap; A first connection portion that connects the column connection portion and the first cross member connection portion; A second connection portion that connects the column connection portion and the second cross member connection portion; Equipped with The column connection portion is provided with a plurality of column connection holes through which column connection bolts are inserted to be inserted into through holes provided in the wooden column, The plurality of column connecting holes are arranged in a row and overlap with the gap when viewed from the insertion direction of the column connecting bolt into the column connecting hole, The steel beam has an end plate located at an end in the extension direction of the steel beam, The end plate is a connection structure between a wooden column and an iron cross member, which are connected to each of the first cross member connection portion and the second cross member connection portion.

3. A building having the connection structure of wooden columns and steel cross members according to claim 1 or 2.

Images