Wooden column joint structure

Abstract

The purpose of this invention is to ensure the fire resistance of the joints between the lower wooden pillars and the upper wooden pillars while improving workability. [Solution] The wooden column joint structure comprises a lower wooden column (10) having a first screw member (12) protruding from its upper surface (10U), an upper wooden column (20) arranged above the lower wooden column (10) and having a second screw member (22) protruding from its lower surface (20L), a concrete section (52) arranged between the lower wooden column (10) and the upper wooden column (20), and a precast joint member (50) having a mechanical joint (54) embedded in the concrete section (52) and connecting the first screw member (12) and the second screw member (22) with the first screw member (12) inserted at the lower end and the second screw member (22) inserted at the upper end.

Description

[Technical Field]

[0001] The present invention relates to a wooden column joint structure. [Background technology]

[0002] A joint structure in which a wooden column and a steel connection member are joined with lag screw bolts and bolts is known (see, for example, Patent Document 1). In the technology disclosed in Patent Document 1, the fire resistance of the steel connection member is ensured by filling the steel connection member with concrete. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-018461 Summary of the Invention [Problem to be solved by the invention]

[0004] When joining a wooden column and a steel connection member with a lag screw bolt and bolts, the bolts are tightened to the lag screw bolts at the construction site, and the steel connection member is joined to the wooden column, after which concrete is poured around the steel connection member. Therefore, concrete must be poured at the construction site, which is time-consuming.

[0005] In consideration of the above, the present invention aims to improve workability while ensuring the fire resistance of the joint between the lower wooden column and the upper wooden column. [Means for solving the problem]

[0006] The wooden column joint structure described in claim 1 comprises a lower wooden column having a first connecting member protruding from its upper surface, an upper wooden column arranged above the lower wooden column and having a second connecting member protruding from its lower surface, a concrete section arranged between the lower wooden column and the upper wooden column, and a precast joint member having a coupling member embedded in the concrete section and connecting the first connecting member and the second connecting member with the first connecting member inserted at its lower end and the second connecting member inserted at its upper end.

[0007] According to the wooden column joint structure of claim 1, the first connecting member protrudes from the upper surface of the lower wooden column. Meanwhile, the second connecting member protrudes from the lower surface of the upper wooden column located above the lower wooden column. The concrete portion of the precast joint member is placed between the lower wooden column and the upper wooden column.

[0008] A joint member is embedded in the concrete portion of the precast joint member. The joint member has a first connecting member inserted at its lower end and a second connecting member inserted at its upper end, connecting the first connecting member and the second connecting member. This joins the lower wooden column and the upper wooden column via the precast joint member.

[0009] Here, the joint member is embedded in the concrete portion of the precast connection member, thereby ensuring the fire resistance of the joint member.

[0010] Furthermore, because precast joint members can be manufactured in factories, there is no need to pour concrete on-site, which reduces the labor required to join the lower wooden column and the upper wooden column.

[0011] In this way, the present invention can improve workability while ensuring fire resistance at the joint between the lower wooden column and the upper wooden column.

[0012] The wooden column joint structure described in claim 2 is the wooden column joint structure described in claim 1, wherein the first connecting member has a first screw member screwed into the upper surface of the lower wooden column, a first coupler provided at the end of the first screw member, and a first connecting bar connected to the first screw member via the first coupler, and the second connecting member has a second screw member screwed into the lower surface of the upper wooden column, a second coupler provided at the end of the second screw member, and a second connecting bar connected to the second screw member via the second coupler.

[0013] According to the wooden column joint structure of claim 2, the first connecting member has a first screw member screwed into the upper surface of the lower wooden column, a first coupler provided at the end of the first screw member, and a first connecting bar connected to the first screw member via the first coupler.

[0014] In this way, by connecting the first connecting rod to the first screw member via the first coupler, the first connecting rod can be replaced, and the length of the first connecting rod can be easily adjusted.

[0015] Furthermore, if the first connecting bar is integrated into the first screw member without using the first coupler, the first screw member becomes longer, which requires a large installation space when screwing the first screw member into the upper surface of the lower wooden column. Also, if the first screw member becomes longer, there is a possibility that the first screw member may tilt when screwing the first screw member into the upper surface of the lower wooden column.

[0016] In contrast, in the present invention, the first coupler and first connecting bar are removed from the first screw member, leaving the first screw member alone, thereby reducing the construction space required when screwing the first screw member into the upper surface of the lower wooden column.

[0017] Furthermore, by making the first screw member a single unit, the first screw member can be easily handled, and tilting of the first screw member is suppressed when the first screw member is screwed into the upper surface of the lower wooden column. Therefore, the workability of the first screw member is improved.

[0018] Similarly, the second connecting member has a second screw member screwed into the underside of the upper wooden column, a second coupler provided at the end of the second screw member, and a second connecting bar connected to the second screw member via the second coupler.

[0019] In this way, by connecting the second connecting bar to the second screw member via the second coupler, the second connecting bar can be replaced, and the length of the second connecting bar can be easily adjusted.

[0020] Furthermore, if the second connecting bar is integrated into the second screw member without using a second coupler, the second screw member will be long, which requires a large installation space when screwing the second screw member into the underside of the upper wooden column. Also, if the second screw member is long, there is a possibility that the second screw member will tilt when screwing it into the underside of the upper wooden column.

[0021] In contrast, in the present invention, the second coupler and second connecting bar are removed from the second screw member, leaving the second screw member alone, thereby reducing the construction space required when screwing the second screw member into the underside of the upper wooden column.

[0022] Furthermore, by making the second screw member a single unit, the second screw member can be easily handled, and tilting of the second screw member can be suppressed when the second screw member is screwed into the underside of the upper wooden column, thereby improving the workability of the second screw member.

[0023] The wooden column joint structure described in claim 3 is the wooden column joint structure described in claim 1 or claim 2, wherein the joint member is filled with a cement-based filler that connects the first connecting member and the second connecting member.

[0024] According to the wooden column joint structure of claim 3, for example, the first connecting member and the second connecting member can be easily connected at the site by filling the joint member with a cement-based filler. [Effects of the Invention]

[0025] As described above, according to the present invention, it is possible to improve workability while ensuring the fire resistance of the joint between the lower wooden column and the upper wooden column. [Brief explanation of the drawings]

[0026] [Figure 1] 1 is a cross-sectional elevation view showing a lower wooden column, an upper wooden column, and a precast joint member to which a wooden column joint structure according to one embodiment is applied. FIG. [Figure 2] FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. [Figure 3] FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. [Figure 4] 2 is an exploded vertical cross-sectional view showing the construction process of the lower wooden column, the upper wooden column, and the precast connection member shown in FIG. 1. FIG. [Figure 5] 2 is an exploded vertical cross-sectional view showing the construction process of the lower wooden column, the upper wooden column, and the precast connection member shown in FIG. 1. FIG. [Figure 6] 2 is a cross-sectional elevation view corresponding to FIG. 1, showing a lower wooden column, an upper wooden column, and a precast joint member to which a modified example of a wooden column joint structure according to one embodiment is applied. FIG. [Figure 7] 7 is a split elevation view of the first connecting member shown in FIG. 6. FIG. [Figure 8] 2 is a cross-sectional elevation view corresponding to FIG. 1, showing a lower wooden column, an upper wooden column, and a precast joint member to which a modified example of a wooden column joint structure according to one embodiment is applied. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0027] Hereinafter, an embodiment will be described with reference to the drawings.

[0028] (Wooden column joint structure) FIG. 1 shows a lower wooden column 10, an upper wooden column 20, and a precast connection member 50 to which the wooden column joint structure according to this embodiment is applied.

[0029] (Lower wooden pillar, upper wooden pillar) The lower end of the upper wooden pillar 20 is joined to the upper end of the lower wooden pillar 10 via a precast joint member 50. The basic structures of the lower wooden pillar 10 and the upper wooden pillar 20 are the same. Therefore, the following will explain the structure of the lower wooden pillar 10, and will omit explanation of the structure of the upper wooden pillar 20.

[0030] As shown in Figure 2, the lower wooden column 10 is formed in a square pillar shape. In addition, a fire-resistant structure is applied to the lower wooden column 10. This lower wooden column 10 has a wood core 30 that supports the load and a fire-resistant coating layer 32 that provides fire-resistant coating to the wood core 30.

[0031] (woody heart) The wood core 30 is made of wood material such as laminated lumber. The wood core 30 extends in the axial direction of the lower wooden column 10 and has a rectangular cross section. The wood core 30 is formed to be able to support the load (long-term load and short-term load) borne by the lower wooden column 10.

[0032] (Fire-resistant coating) The fire-resistant coating layer 32 has a fire-retardant layer 34 that covers the woody core 30 and a substitute fire layer 36 that covers the fire-retardant layer 34.

[0033] (fire-stop layer) A fire-retardant layer 34 is provided on the outside of the woody core 30. The fire-retardant layer 34 stops the combustion of the substitute fire layer 36 in the event of a fire (spontaneous extinguishing), and suppresses the combustion of the woody core 30. The fire-retardant layer 34 is arranged along the outer periphery of the woody core 30, covering the entire side surface of the woody core 30.

[0034] The fire-retardant layer 34 is a high-heat-capacity layer (heat-capacity type) with a larger heat capacity than the wood core 30. This fire-retardant layer 34 has multiple wooden pieces 34A and hardened bodies 34B arranged alternately on the outer surface of the wood core 30. Each wooden piece 34A and hardened body 34B is arranged along the material axis direction of the lower wooden column 10.

[0035] The wooden pieces 34A are made of laminated wood or the like and are bonded to the outer surface of the wooden core 30 with adhesive or the like. On the other hand, the hardened pieces 34B are formed by hardening mortar, grout, or concrete, for example, and have a greater heat capacity than the wooden pieces 34A. By arranging the wooden pieces 34A and hardened pieces 34B alternately, the heat capacity of the entire fire-retardant layer 34 is greater than the heat capacity of the wooden core 30 and the substitute fire layer 36.

[0036] (stolen layer) A wooden sub-combustible layer 36 is provided on the outside of the fire-stopping layer 34. The sub-combustible layer 36 burns in the event of a fire to form a carbonized layer (thermal insulating layer), thereby preventing the penetration of fire heat into the woody core 30.

[0037] The sub-combustible layer 36 is formed of a wooden material such as laminated wood. The sub-combustible layer 36 is disposed along the outer periphery of the fire-retardant layer 34, covering the entire outer surface of the fire-retardant layer 34. The sub-combustible layer 36 is bonded to the outer surface of the wooden material 34A of the fire-retardant layer 34 with an adhesive or the like.

[0038] The thickness (layer thickness) of the fuel layer 36 is appropriately set depending on the required fire resistance performance (fire resistance time) of the lower wooden column 10, the burning speed of the fuel layer 36, and the heat insulation performance.

[0039] In this embodiment, the fire-resistant coating layer 32 is composed of the fire-stopping layer 34 and the sub-burning layer 36, but one of the fire-stopping layer 34 and the sub-burning layer 36 may be omitted. The fire-resistant structure applied to the lower wooden column 10 is not limited to the one described above and can be changed as appropriate.

[0040] (First screw member) 1, a plurality of first screw members 12 are provided on the upper surface 10U of the lower wooden column 10 to be joined to precast connection members 50, which will be described later. The first screw members 12 are, for example, lag screw bolts, and are provided at each corner of the wood core 30 on the upper surface 10U of the lower wooden column 10. The first screw members 12 are an example of first connecting members.

[0041] A screw is provided at the bottom of the first screw member 12. The bottom of this first screw member 12 is screwed into and fixed to the wood core 30 of the lower wooden column 10. On the other hand, no screw is provided at the top of the first screw member 12. The top of this first screw member 12 protrudes from the upper surface 10U of the lower wooden column 10 (wood core 30) and is connected to the lower end side of a mechanical joint 54 of a precast connection member 50, which will be described later.

[0042] Note that threads, projections, recesses, etc. may be provided on the upper portion of the first screw member 12. The arrangement and number of the first screw members 12 can be changed as appropriate.

[0043] (Second screw member) A plurality of second screw members 22 are provided on the underside 20L of the upper wooden column 20 to be joined to the precast connection members 50. The second screw members 22 are, for example, lag screw bolts, and are provided at each corner of the underside of the wood core 30 of the upper wooden column 20.

[0044] A screw is provided at the upper part of the second screw member 22. The upper part of this second screw member 22 is screwed into and fixed to the wood core 30 of the upper wooden column 20. On the other hand, no screw is provided at the lower part of the second screw member 22. The lower part of this second screw member 22 protrudes from the lower surface 20L of the upper wooden column 20 and is connected to the upper end side of a mechanical joint 54 of a precast connection member 50, which will be described later.

[0045] Note that threads, projections, recesses, etc. may be provided on the lower portion of the second screw member 22. The arrangement and number of the second screw members 22 can be changed as appropriate.

[0046] (Precast joint members) The precast connection member 50 is made of precast concrete (full precast concrete). The precast connection member 50 is made of reinforced concrete and has reinforcing bars (not shown) embedded inside. The precast connection member 50 includes a concrete portion 52 and a plurality of mechanical joints 54. The mechanical joints 54 are an example of a joint member.

[0047] (Concrete section) The concrete section 52 is formed into a rectangular parallelepiped shape using precast concrete. The planar shape and size of the concrete section 52 are the same as the outer shapes of the lower wooden column 10 and the upper wooden column 20. The concrete section 52 is disposed between the upper surface 10U of the lower wooden column 10 and the lower surface 20L of the upper wooden column 20.

[0048] The joint between the underside of the concrete portion 52 and the upper surface 10U of the lower wooden column 10 is filled with a cement-based filler 60 such as grout or mortar. Similarly, the joint between the upper surface of the concrete portion 52 and the lower surface 20L of the upper wooden column 20 is filled with a cement-based filler 60.

[0049] The shape of the concrete portion 52 is not limited to a rectangular parallelepiped shape, and can be changed as appropriate depending on the shapes of the lower wooden pillar 10 and the upper wooden pillar 20.

[0050] (mechanical coupling) 1 and 3, mechanical joints 54 are embedded in each corner of the concrete section 52. The mechanical joints 54 are formed in a cylindrical shape with both ends open, and are arranged with their axial direction in the up-down direction. The mechanical joints 54 extend from the lower surface to the upper surface of the concrete section 52. These mechanical joints 54 form insertion holes in the lower and upper surfaces of the concrete section 52, respectively.

[0051] 1 and 4, the upper part of the first screw member 12 protruding from the upper surface 10U of the lower wooden column 10 is inserted into the lower end side of the mechanical joint 54. Meanwhile, the lower part of the second screw member 22 protruding from the lower surface 20L of the upper wooden column 20 is inserted into the upper end side of the mechanical joint 54. In this state, by filling the mechanical joint 54 with a cement-based filler 60, the first screw member 12 and the second screw member 22 are connected via the mechanical joint 54.

[0052] An injection hole 56 and two discharge holes 58 are formed on the side of the concrete portion 52. The injection hole 56 is connected to the middle portion of the mechanical joint 54 in the axial direction. On the other hand, the two discharge holes 58 are connected to both ends of the mechanical joint 54 in the axial direction.

[0053] Then, the cement-based filler 60 is filled into the axial middle part of the mechanical joint 54 through the injection hole 56, and the cement-based filler 60 filled into the mechanical joint 54 is discharged through the two discharge holes 58, thereby confirming that the cement-based filler 60 has been filled into the mechanical joint 54.

[0054] The number and arrangement of injection holes 56 and discharge holes 58 can be changed as appropriate. For example, injection hole 56 may be connected to one axial end of mechanical coupling 54, and discharge hole 58 may be connected to the other axial end of injection hole 56. Furthermore, the coupling member is not limited to mechanical coupling 54, and may be, for example, a coupler or the like.

[0055] (Construction method for wooden column joint structure) Next, an example of a construction method for a wooden column joint structure will be described.

[0056] 4 shows the erected lower wooden pillar 10. Note that a plurality of first screw members 12 are attached to the lower wooden pillar 10 in advance.

[0057] From this state, first, the precast connection member 50 is lifted up using a crane or the like (not shown), and then placed on the upper surface 10U of the lower wooden column 10 via a spacer (not shown). At this time, the upper portions of the multiple first screw members 12 protruding from the upper surface 10U of the lower wooden column 10 are inserted into the lower ends of the multiple mechanical joints 54 embedded in the concrete portion 52 of the precast connection member 50.

[0058] Next, the upper wooden column 20 is lifted up by a crane or the like (not shown), and the underside 20L of the upper wooden column 20 is placed on the top surface of the precast connection member 50 via a spacer (not shown). At this time, the lower parts of the multiple second screw members 22 protruding from the underside 20L of the upper wooden column 20 are inserted into the upper ends of the multiple mechanical joints 54 embedded in the concrete portion 52 of the precast connection member 50.

[0059] Next, as shown in Fig. 1, a cement-based filler 60 is filled into the mechanical joint 54 through the injection hole 56 formed in the precast connection member 50, and the cement-based filler 60 filled into the mechanical joint 54 is discharged through the two discharge holes 58. As a result, the cement-based filler 60 is filled into the mechanical joint 54, and the first screw member 12 and the second screw member 22 are connected via the mechanical joint 54.

[0060] Next, cement-based filler 60 is filled into the joints between the precast connection member 50 and the lower wooden column 10 and the upper wooden column 20. As a result, the lower wooden column 10 and the upper wooden column 20 are joined via the precast connection member 50.

[0061] The construction procedure is not limited to the above and can be modified as appropriate. For example, the cement-based filler 60 may be filled into the mechanical joint 54 after filling the joints between the precast connection member 50 and the lower wooden column 10 and the upper wooden column 20 with the cement-based filler 60.

[0062] (action) Next, the operation of this embodiment will be described.

[0063] 1, in the wooden column joint structure according to this embodiment, a plurality of first screw members 12 protrude from an upper surface 10U of a lower wooden column 10. On the other hand, a plurality of second screw members 22 protrude from a lower surface 20L of an upper wooden column 20 disposed above the lower wooden column 10. A concrete portion 52 of a precast connection member 50 is disposed between the lower wooden column 10 and the upper wooden column 20.

[0064] A plurality of mechanical joints 54 are embedded in the concrete portion 52 of the precast connection member 50. Each mechanical joint 54 has a first screw member 12 inserted at its lower end and a second screw member 22 inserted at its upper end, connecting the first screw member 12 and the second screw member 22.

[0065] Specifically, the first screw member 12 is inserted into the lower end side of the mechanical joint 54, and the second screw member 22 is inserted into the upper end side of the mechanical joint 54, and then the cement-based filler 60 is filled into the mechanical joint 54. In this way, the first screw member 12 and the second screw member 22 are connected via the mechanical joint 54. As a result, the lower wooden column 10 and the upper wooden column 20 are joined via the precast connection member 50.

[0066] Here, the mechanical joint 54 is embedded in the concrete portion 52 of the precast connection member 50. This ensures the fire resistance of the mechanical joint 54.

[0067] Furthermore, since the precast joint member 50 can be manufactured in a factory or the like, there is no need to pour concrete on-site, which reduces the labor required to join the lower wooden column 10 and the upper wooden column 20.

[0068] In this way, in this embodiment, the fire resistance of the joint between the lower wooden pillar 10 and the upper wooden pillar 20 can be ensured while improving workability.

[0069] Furthermore, in this embodiment, the first screw member 12 and the second screw member 22 can be easily connected at the site by filling the mechanical joint 54 with a cement-based filler 60. Therefore, workability is further improved.

[0070] (Variation) Next, a modification of the above embodiment will be described.

[0071] In the above embodiment, the first connecting member is the first screw member 12, and the second connecting member is the second screw member 22. However, the first connecting member and the second connecting member are not limited to the first screw member 12 and the second screw member 22.

[0072] For example, in the variant shown in Figures 5 and 6, the first connecting member 70 has a first screw member 72, a first coupler 74, and a first connecting muscle 76, and the second connecting member 80 has a second screw member 82, a second coupler 84, and a second connecting muscle 86.

[0073] The first connecting member 70 and the second connecting member 80 have the same configuration. Therefore, the following will describe the configuration of the first connecting member 70, and will omit a description of the second connecting member 80 as appropriate.

[0074] 6, the first screw member 72 is screwed into the upper surface 10U of the lower wooden column 10 with its upper end portion protruding from the upper surface 10U. A first connecting bar 76 is connected to the upper end portion of this first screw member 72 via a first coupler 74.

[0075] The first coupler 74 is, for example, a screw coupler. The lower end side of this first coupler 74 is attached to a male thread portion formed on the upper end part of the first screw member 72. On the other hand, the upper end side of the first coupler 74 is attached to a male thread portion formed on the lower end part of the first connecting bar 76. The first screw member 72 and the first connecting bar 76 are connected via this first coupler 74.

[0076] The first coupler 74 and the first connecting reinforcing bar 76 are inserted into the lower end of a mechanical joint 54 embedded in the concrete portion 52 of the precast connection member 50. Meanwhile, a second coupler 84 and a second connecting reinforcing bar 86 of a second connecting member 80 protruding from the lower surface 20L of the upper wooden column 20 are inserted into the upper end of the mechanical joint 54. In this state, the first connecting member 70 and the second connecting member 80 are connected via the mechanical joint 54 by filling the mechanical joint 54 with cement-based filler 60.

[0077] In this way, by connecting the first connector reinforcement 76 to the first screw member 72 via the first coupler 74, the first connector reinforcement 76 can be replaced. Therefore, the length of the first connector reinforcement 76 can be easily adjusted according to, for example, the height of the precast connection member 50.

[0078] Furthermore, if the first connecting reinforcement 76 is integrated with the first screw member 72 without using the first coupler 74, the first screw member 72 becomes longer, and therefore a large installation space is required when screwing the first screw member 72 into the upper surface 10U of the lower wooden column 10. Furthermore, if the first screw member 72 becomes longer, there is a possibility that the first screw member 72 will tilt when screwing the first screw member 72 into the upper surface 10U of the lower wooden column 10.

[0079] In contrast to this, in this embodiment, the first coupler 74 and the first connecting bar 76 are removed from the first screw member 72, leaving the first screw member 72 alone, thereby reducing the construction space required when screwing the first screw member 72 into the upper surface 10U of the lower wooden column 10.

[0080] Furthermore, by making the first screw member 72 a single unit, the first screw member 72 can be easily handled, and tilting of the first screw member 72 is suppressed when the first screw member 72 is screwed into the upper surface 10U of the lower wooden column 10. Therefore, the workability of the first screw member 72 is improved.

[0081] Similarly, the second connector bars 86 can be replaced by connecting the second connector bars 86 to the second screw members 82 via the second couplers 84. Therefore, the length of the second connector bars 86 can be easily adjusted according to the height of the precast connection members 50, for example.

[0082] Furthermore, if the second connecting reinforcement 86 is integrated with the second screw member 82 without using the second coupler 84, the second screw member 82 will be long, and a large installation space will be required when screwing the second screw member 82 into the underside 20L of the upper wooden column 20. Furthermore, if the second screw member 82 is long, there is a possibility that the second screw member 82 will tilt when screwing the second screw member 82 into the underside 20L of the upper wooden column 20.

[0083] In contrast to this, in this embodiment, the second coupler 84 and the second connecting bar 86 are removed from the second screw member 82, leaving the second screw member 82 alone, thereby reducing the construction space required when screwing the second screw member 82 into the underside 20L of the upper wooden column 20.

[0084] Furthermore, by making the second screw member 82 a single unit, the second screw member 82 can be easily handled, and tilting of the second screw member 82 is suppressed when the second screw member 82 is screwed into the lower surface 20L of the upper wooden column 20. Therefore, the workability of the second screw member 82 is improved.

[0085] Next, as in a modified example shown in Fig. 7, a steel connection member 90 may be embedded in the concrete portion 52 of the precast connection member 50. As one example, the steel connection member 90 is formed from an H-shaped steel beam and is embedded in the center of the concrete portion 52. A beam bracket 92 is provided on this steel connection member 90.

[0086] The beam bracket 92 is formed of, for example, an H-shaped steel. The beam bracket 92 protrudes laterally from the steel connection member 90 and projects from the side surface of the concrete portion 52. A steel beam 94 is joined to the beam bracket 92.

[0087] By embedding the steel connection member 90 and the beam bracket 92 in the precast connection member 50 in this way, the steel beam 94 can be easily joined to the precast connection member 50.

[0088] 8, upper beam main reinforcement bars 100 and lower beam main reinforcement bars 102 may be embedded in the precast connection member 50. One end of the upper beam main reinforcement bars 100 and the lower beam main reinforcement bars 102 is hooked at 90 degrees and embedded in the concrete portion 52 of the precast connection member 50. A plurality of shear reinforcement bars 104 are embedded in the concrete portion 52.

[0089] The other ends of the upper beam main reinforcement 100 and the lower beam main reinforcement 102 protrude from the side surface of the concrete portion 52. The other ends of the upper beam main reinforcement 100 and the lower beam main reinforcement 102 are connected to upper beam main reinforcement 112 and lower beam main reinforcement 114 of a reinforced concrete beam 110 by mechanical joints 106, lap joints, etc.

[0090] By having the upper end beam main reinforcement 100 and the lower end beam main reinforcement 102 protrude from the side of the concrete part 52 of the precast joint member 50 in this way, the concrete beam 110 can be easily joined to the precast joint member 50.

[0091] The concrete beam 110 may be made of steel-reinforced concrete. The concrete beam 110 may be made of cast-in-place concrete or precast concrete.

[0092] In the above embodiment, a fire-resistant structure is applied to the lower wooden column 10 and the upper wooden column 20. However, the lower wooden column 10 and the upper wooden column 20 are not limited to a fire-resistant structure, and may be a semi-fire-resistant structure or a non-fire-resistant structure.

[0093] Although one embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, and one embodiment and various modified examples may be used in appropriate combination, and it goes without saying that the present invention can be implemented in various forms as long as it does not deviate from the gist of the present invention. [Explanation of symbols]

[0094] 10 Lower wooden pillar 10U top 12 First screw member (first connecting member) 20 Upper wooden pillar 20L bottom 22 second screw member (first connecting member) 50 Precast joint members 52 Concrete Section 54 Mechanical joints (joint components) 60 Cement-based filler 70 First connecting member 72 First screw member 74 First Coupler 76 First connector 80 second connecting member 82 Second screw member 84 Second Coupler 86 Secondary connector

Claims

1. a lower wooden column having a first connecting member protruding from an upper surface thereof; an upper wooden pillar disposed above the lower wooden pillar and having a second connecting member protruding from a lower surface thereof; a precast joint member including a concrete portion disposed between the lower wooden column and the upper wooden column, and a joint member embedded in the concrete portion, the joint member connecting the first connecting member and the second connecting member with the first connecting member inserted at the lower end side and the second connecting member inserted at the upper end side; A wooden column joint structure with

2. The first connecting member is a first screw member screwed into the upper surface of the lower wooden pillar; a first coupler provided at an end of the first screw member; a first connecting rod connected to the first screw member via the first coupler; and The second connecting member is A second screw member screwed into the lower surface of the upper wooden column; a second coupler provided at an end of the second screw member; a second connecting rod connected to the second screw member via the second coupler; having The wooden column joint structure according to claim 1.

3. The joint member is filled with a cement-based filler that connects the first connecting member and the second connecting member. The wooden column joint structure according to claim 1 or 2.

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