Column-beam connection structure

Abstract

To provide a column-beam connection structure capable of enhancing fireproof performance of a wooden column material which is connected to a steel beam material via a joint member.SOLUTION: A column-beam connection structure 10 includes: a fireproof plate material 41 for covering a wooden column material 11; and a fireproof covering material 60 for covering a steel beam material 12. The fireproof covering material 60 has fireproof covering material filling parts 61, 62 filled between an upper level 41a of the fireproof plate material 41 and a lower level 12b of the steel beam material 12. An upper level 11a of the wooden column material 11 is equal to or less than the upper level 41a of the fireproof plate material 41, and a cement composition material is provided between the upper level 11a of the wooden column material 11 and a lower level 13b of a joint member 13.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a column-beam connection structure for connecting a column member and a beam member through a joint member.

Background Art

[0002] As a column-beam connection structure for connecting a steel beam (steel beam member) and the core of a wooden column member (wooden column member), for example, Patent Document 1 discloses a column-beam connection structure for connecting a steel beam member and a wooden column member through a steel joint member.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the column-beam connection structure of Patent Document 1, the joint member and the wooden column member are connected in a manner that they contact each other. Therefore, when the steel beam member or the joint member is heated by a fire, the heat of the steel beam member or the joint member is likely to be transmitted to the end of the wooden column member, and there is room for improvement in the fire resistance performance of the wooden column member.

Means for Solving the Problems

[0005] The column-beam connection structure for solving the above problems is a column-beam connection structure having a wooden column member, a steel beam member, and a joint member for connecting the wooden column member and the steel beam member, and includes a fire-resistant plate material covering the wooden column member and a fire-resistant coating material covering the steel beam member. The fire-resistant coating material has a fire-resistant coating material filling portion filled between the upper level of the fire-resistant plate material and the lower level of the steel beam member, the upper level of the wooden column member is below the upper level of the fire-resistant plate material, and has a cement composite material provided between the upper level of the wooden column member and the lower level of the joint member.

[0006] A column-beam connection structure that solves the above problems is a column-beam connection structure having a wooden column, a steel beam, and a joint member that connects the wooden column and the steel beam, comprising a fire-resistant plate material that covers the wooden column and a fire-resistant covering material that covers the steel beam, wherein the fire-resistant covering material has a fire-resistant covering material filling portion that is filled between the lower level of the fire-resistant plate and the upper level of the steel beam, the lower level of the wooden column is at or above the lower level of the fire-resistant plate, and a cement composition material is provided between the lower level of the wooden column and the upper level of the joint member.

[0007] A column-beam connection structure that solves the above problems is a column-beam connection structure having a wooden column, a steel beam, and a joint member that connects the wooden column and the steel beam, comprising a fire-resistant plate covering the wooden column and a cement-based floor covering the steel beam, wherein the cement-based floor has a cement-based floor filling section that is filled between the lower level of the fire-resistant plate and the upper level of the steel beam, and a cement-based material provided between the lower level of the wooden column and the upper level of the joint member.

[0008] These configurations allow for improved fire resistance of the wooden column 11 without compromising its structural performance. In the above configuration, the upper level of the cement-based flooring material may be higher than or equal to the lower level of the fire-resistant board material. This ensures that the lower end of the fire-resistant board material is covered by the cement-based flooring material, making the lower end of the fire-resistant board material less susceptible to direct fire damage. As a result, the fire resistance of the lower end of the wooden column material can be improved.

[0009] In the above configuration, the wooden column material has chamfered edges on the corners facing the fire-resistant board material and the cement composition material, and the chamfered edges may be filled with fire-resistant filler material. This can further enhance the fire resistance of the wooden column material.

[0010] In the above configuration, the cement material is configured to transmit vertical loads. As a result, even if the cement material is provided between the wooden column and the joint member, vertical loads can be transmitted between the wooden column and the joint member via the cement material. [Brief explanation of the drawing]

[0011] [Figure 1] This figure shows the schematic configuration of the basic structure related to the structural performance of the column-beam connection structure in the first embodiment. [Figure 2] This is a schematic cross-sectional view showing an example of a wooden column in the first embodiment. [Figure 3] This is a schematic cross-sectional view illustrating an example of the process of connecting a joint member to a wooden column located below the joint member in the first embodiment. [Figure 4] This is a schematic cross-sectional view illustrating an example of the process of connecting a joint member to a wooden column located above the joint member in the first embodiment. [Figure 5] This is a cross-sectional view showing the schematic configuration of the column-beam connection structure in the first embodiment. [Figure 6] This is a cross-sectional view showing the schematic configuration of the column-beam connection structure in the second embodiment. [Modes for carrying out the invention]

[0012] (First Embodiment) A first embodiment of the column-beam connection structure will be described with reference to Figures 1 to 5. First, the basic structure relating to the structural performance of the column-beam connection structure will be described.

[0013] As shown in Figure 1, the column-beam connection structure 10 comprises a wooden column 11, a steel beam 12, and a joint member 13 that connects the wooden column 11 and the steel beam 12. The wooden column 11 has a rectangular cross-section. The wooden column 11 is connected to the joint member 13 via a cement material 14 located between it and the joint member 13.

[0014] The cement composite material 14 is provided so as to contact the wooden column material 11 and the joint member 13. The cement composite material 14 is obtained by curing a cement composition. The cement composition is mortar obtained by kneading cement and water. The cement composition may be one mixed with fibers such as Slim Crete (registered trademark) (fiber reinforced concrete material).

[0015] The cement composite material 14 may be formed by placing a cement composition between the wooden column material 11 and the joint member 13 in a state where they are arranged at a predetermined position, or may be a precast material formed in a desired shape in advance.

[0016] The steel beam material 12 is arranged so as to span between a pair of spaced joint members 13. The steel beam material 12 is a member having a cross-sectional H shape having a lower flange 21, an upper flange 22, and a web 23 connecting the lower flange 21 and the upper flange 22. The lower surface of the lower flange 21 is the lower level 12b of the steel beam material 12. The upper surface of the upper flange 22 is the upper level 12a of the steel beam material 12. The steel beam material 12 is connected to the joint member 13 by a joining method such as welding.

[0017] The joint member 13 has a steel frame structure in which various steel materials are connected by a joining method such as welding. The joint member 13 has a main body portion 30, a lower flange portion 31, and an upper flange portion 32. The main body portion 30 has a rectangular cross-sectional outer shape. The web 23 of the steel beam material 12 is joined to each side surface portion of the main body portion 30 in a T-joint structure.

[0018] The lower flange portion 31 is a rectangular plate material connected to the lower end of the main body portion 30. The lower surface of the lower flange portion 31 is the lower level 13b of the joint member 13. The lower flange 21 of the steel beam material 12 is joined to the lower flange portion 31 in a butting joint structure. The lower flange portion 31 and the lower flange 21 are joined so that the lower level 13b of the joint member 13 and the lower level 12b of the steel beam material are flush. Further, the web 23 of the steel beam material 12 is joined to the upper surface of the lower flange portion 31 in an angle joint structure.

[0019] The upper flange portion 32 is a rectangular plate material connected to the upper end of the main body portion 30. The upper surface of the upper flange portion 32 is the upper level 13a of the joint member 13. The upper flange 22 of the steel beam member 12 is joined to the upper flange portion 32 by a butt joint structure. The upper flange portion 32 and the upper flange 22 are joined so that the upper level 13a of the joint member 13 and the upper level 12a of the steel beam member 12 are flush. Also, the web 23 of the steel beam member 12 is joined to the lower surface of the upper flange portion 32 by a corner joint structure.

[0020] In the column-beam connection structure 10 having such a basic structure, the load transfer between the wooden column members 11 and the load transfer between the wooden column member 11 and the steel beam member 12 are carried out through the joint member 13 and the cement composite member 14. Also, the load transfer between the steel beam members 12 is carried out through the joint member 13.

[0021] (Wooden column member) As shown in FIG. 2, each side surface of the wooden column member 11 is covered with a fire-resistant plate material 41. The fire-resistant plate material 41 is a member that is less flammable than the wooden column member 11, and in addition to a water-resistant reinforced gypsum board having excellent water resistance, it can be composed of a non-combustible material such as a calcium silicate board. The fire-resistant plate material 41 is attached to the wooden column member 11 by screws or the like not shown. In FIG. 2, a case where it is composed of two water-resistant reinforced gypsum boards whose side surfaces overlap is shown.

[0022] The fire-resistant plate material 41 is provided so that the upper level 41a, which is its upper end surface, is flush with the upper level 11a, which is the upper end surface of the wooden column member 11. Also, the fire-resistant plate material 41 is provided so that the lower level 41b, which is its lower end surface, is flush with the lower level 11b, which is the lower end surface of the wooden column member 11. The fire-resistant plate material 41 is covered from the outside by a decorative wood board 42.

[0023] Furthermore, the upper level 41a of the fire-resistant board material 41 may be located below the upper level 11a of the wooden column material 11. The lower level 41b of the fire-resistant board material 41 may be located above the lower level 11b of the wooden column material 11. In addition, the decorative wooden board 42 may be installed at the construction site.

[0024] The wooden column 11 is provided with chamfered portions 43 at both its upper and lower edges, where the corners facing the fire-resistant board 41 are beveled. Fire-resistant filler 44 is filled between the fire-resistant board 41 and the chamfered portions 43 of the wooden column 11. At the upper end of the wooden column 11, the fire-resistant filler 44 is positioned flush with the upper level 11a of the wooden column 11. At the lower end of the wooden column 11, the fire-resistant filler 44 is positioned flush with the lower level 11b of the wooden column 11. The fire-resistant filler reduces heat conduction to the wooden column 11 by absorbing heat from the surroundings. Suitable fire-resistant filler 44 includes, for example, dry-curing inorganic fillers such as "Gyptite®" or "Tiger Trabond®" (both manufactured by Yoshino Gypsum Co., Ltd.).

[0025] The wooden column 11 has a connecting hole 45 at its upper end and a connecting hole 46 at its lower end. The connecting holes 45 and 46 have openings on their end faces and extend in the direction of the wooden column 11. The connecting hole 45 is used when connecting the wooden column 11 to the joint member 13. The connecting holes 45 and 46 are formed to surround the central part of the wooden column 11.

[0026] (Method of connecting wooden pillars and joint members) A method for connecting a wooden column 11 and a joint member 13 will be described, using the case where a cement composition is poured between the wooden column 11 and the joint member 13 as an example.

[0027] As shown in Figure 3, regarding the connection between the joint member 13 and the wooden column 11 positioned below the joint member 13, a lower connecting member 35 is provided on the lower flange portion 31 of the joint member 13. The lower connecting member 35 extends downward from the lower level 13b of the joint member 13. The lower connecting member 35 is a member that is inserted into a connecting hole 45 formed in the upper end of the wooden column 11. The lower connecting member 35 is connected to the lower flange portion 31 by welding, screw joining, or the like.

[0028] When connecting the joint member 13 to the wooden column member 11 positioned below the joint member 13, first, the joint member 13 is aligned with the wooden column member 11. Then, the lower connecting member 35 of the joint member 13 is inserted into the connection hole 45 of the wooden column member 11, and the joint member 13 is lowered to a position corresponding to the design thickness of the cement composition material 14. The design thickness of the cement composition material 14 is set according to the fire resistance performance required for the column-beam connection structure 10, more specifically, according to the thickness of the fire-resistant coating material 60 (see Figure 5) that satisfies the fire resistance performance required for the steel beam member 12. When inserting the lower connecting member 35 of the joint member 13, it is preferable to provide a level bolt or the like as a spacer 48 to maintain the gap between the upper level 11a of the wooden column member 11 and the lower level 13b of the joint member 13 at the design thickness of the cement composition material 14. By providing such a spacer 48, equipment to maintain the position of the joint member 13 at a position corresponding to the design thickness of the cement composition material 14 becomes unnecessary.

[0029] Next, adhesive is injected into the connection hole 45. An epoxy resin-based adhesive, primarily composed of epoxy resin, is preferred. The adhesive is injected into the connection hole 45 through an injection hole formed in, for example, a wooden column 11, which communicates with the lower end of the connection hole 45. The adhesive spreads throughout the entire connection hole 45. Once the adhesive hardens, an adhesive filler 51 is formed.

[0030] Next, the cement composition is poured between the lower level 13b of the joint member 13 and the upper level 11a of the wooden column 11. When the cement composition is poured, the area around the forming portion of the cement composition material 14 may be surrounded by formwork that will be removed later. The cement composition then hardens to form the cement composition material 14. This connects the joint member 13 and the wooden column 11 positioned below the joint member 13.

[0031] As shown in Figure 4, regarding the connection between the joint member 13 and the wooden column 11 positioned above the joint member 13, an upper joining member 36 is provided on the upper flange portion 32 of the joint member 13. The upper joining member 36 extends upward from the upper flange portion 32. The upper joining member 36 is a member that is inserted into a connection hole 46 formed in the lower end of the wooden column 11. The upper joining member 36 is connected to the upper flange portion 32 by welding, screw joining, or the like.

[0032] When connecting the joint member 13 and the wooden column member 11 positioned above the joint member 13, first, the wooden column member 11 is aligned with the joint member 13. Then, the upper joining member 36 of the joint member 13 is inserted into the connecting hole 46 of the wooden column member 11, and the wooden column member 11 is lowered to a position corresponding to the design thickness of the cement composition material 14.

[0033] When inserting the upper joining member 36 of the joint member 13 into the connecting hole 46 of the wooden column 11, it is preferable to provide a leveling bolt or the like as a spacer 53 to maintain the gap between the lower level 11b of the wooden column 11 and the upper level 13a of the joint member 13 at the design thickness of the cement composition material 14.

[0034] Next, adhesive is injected into the connection hole 46 formed in the lower end of the wooden column 11. An epoxy resin-based adhesive, primarily composed of epoxy resin, is preferred. Regarding the injection of adhesive into the connection hole 46, it is preferable that the wooden column 11, etc., has an injection hole communicating with the lower end of the connection hole 46 and a discharge hole communicating with the upper end of the connection hole 46. Furthermore, it is preferable that the upper joining member 36 is provided with a sponge ring 54 to suppress leakage of adhesive from the connection hole 46. Once the adhesive hardens, an adhesive filler 52 is formed.

[0035] Next, a cement composition is poured between the lower level 11b of the wooden column 11 and the upper level 13a of the joint member 13. As the cement composition hardens, a cement material 14 is formed. This connects the joint member 13 and the wooden column 11 positioned above the joint member 13.

[0036] When the wooden column 11 is connected to the joint member 13, the steel beam 12 is connected to the joint member 13. In connecting the steel beam 12 to the joint member 13, the lower flange 21 of the steel beam 12 is joined to the lower flange portion 31 of the joint member 13 in a butt joint structure. The upper flange 22 of the steel beam 12 is joined to the upper flange portion 32 of the joint member 13 in a butt joint structure. The web 23 of the steel beam 12 is joined to the main body portion 30 of the steel beam 12 in a T-joint structure. Note that the connection between the wooden column 11 and the joint member 13 may be performed with some or all of the steel beam 12 already connected to the joint member 13.

[0037] (Fireproof covering material) As shown in Figure 5, when the wooden column 11 and the steel beam 12 are connected via the joint member 13, the exposed portions of the joint member 13 and the steel beam 12 are covered with a fire-resistant coating material 60 of a predetermined design thickness. An example of the fire-resistant coating material 60 is sprayed rock wool, which is a fluid made primarily from granular rock wool fibers and containing cement as a hardening agent. As described above, the design thickness of the cement composition material 14 is set according to the fire resistance performance required of the wooden column 11 and the steel beam 12. The design thickness of the cement composition material 14 may be set to a fire resistance performance higher than that required of the wooden column 11 and the steel beam 12.

[0038] Once the fire-resistant coating material 60 is formed, a fire-resistant coating material filling section 61 is formed between the lower level 12b of the steel beam material 12 and the upper level 41a of the fire-resistant plate material 41, and a fire-resistant coating material filling section 62 is formed between the upper level 12a of the steel beam material 12 and the lower level 41b of the fire-resistant plate material 41.

[0039] The operation and effects of the first embodiment will be described. (1-1) In the column-beam connection structure 10, the heat transferred from the steel beam 12 to the joint member 13 in the event of a fire is transferred to the wooden column 11 via the cement composition material 14, which has a lower thermal conductivity than the lower flange portion 31 and upper flange portion 32 of the joint member 13. Furthermore, since fire-resistant coating material filling portions 61 and 62 are provided between the steel beam 12 and the fire-resistant plate 41, the heat transferred through the steel beam 12 is not directly transferred to the fire-resistant plate 41. Moreover, since the joint member 13 and the wooden column 11 are connected via the cement composition material 14, load transfer between the joint member 13 and the wooden column 11 is not hindered. In other words, the column-beam connection structure 10 makes it possible to improve the fire resistance of the wooden column 11 without impairing its structural performance.

[0040] (1-2) Even if the upper and lower ends of the fire-resistant board material 41 and the fire-resistant covering material 60 decompose due to the heat caused by the fire, the fire-resistant filler material 44 in the wooden column 11 will be exposed due to shrinkage caused by the thermal decomposition. In other words, by providing the fire-resistant filler material 44, the fire resistance performance of the wooden column 11, especially the fire resistance performance of the upper and lower edges, can be further enhanced.

[0041] (1-3) By setting the design thickness of the cement composition material 14 to a fire resistance performance higher than that required for the wooden column material 11 and the steel beam material 12, the fire-resistant coating material filling sections 61, 62 and the cement composition material 14 become thicker. As a result, heat is less likely to be transferred to the wooden column material 11, thereby further enhancing the fire resistance performance of the wooden column material 11.

[0042] (Second Embodiment) Referring to Figure 6, a second embodiment of the column-beam connection structure will be described. Note that the column-beam connection structure of the second embodiment has the same main components as the column-beam connection structure of the first embodiment. Therefore, in the second embodiment, the parts that differ from the first embodiment will be described in detail, while parts that are the same as those in the first embodiment will be denoted by the same reference numerals, and their detailed descriptions will be omitted.

[0043] As shown in Figure 6, the column-beam connection structure 70 has a steel beam member 12 whose upper flange portion 32 supports a cement-based floor material 71 made of a cement composition. The cement composition used in this cement-based floor material 71 may be, for example, concrete made by mixing cement with aggregates such as gravel and sand, and water. In addition, various types of reinforcing bars may be arranged in this cement-based floor material 71.

[0044] The cement-based flooring material 71 has an upper surface, or upper level 71a, above the lower level 41b of the fire-resistant board material 41. The cement-based flooring material 71 has a cement-based flooring material filling section 72 between the lower level 41b of the fire-resistant board material 41 and the upper level 12a of the steel beam material 12. The decorative wooden board 42 of the wooden column material 11 has a lower end surface, or lower level 42b, above the upper level 71a of the cement-based flooring material 71. A fire-resistant sealant 73 is provided in the gap between the upper level 71a of the cement-based flooring material 71 and the lower level 42b of the decorative wooden board 42. The fire-resistant sealant 73 is preferably one that, in addition to fire resistance, also has the ability to follow interlayer deformation between the cement-based flooring material 71 and the decorative wooden board 42. The fire-resistant sealant 73 is formed, for example, by a modified silicone-based "Tiger Fire-Resistant Seal" (manufactured by Yoshino Gypsum Co., Ltd.).

[0045] In this column-beam connection structure 70, the wooden column 11, joint member 13, and steel beam 12 are connected before the cement-based flooring 71 is formed. After the cement-based flooring 71 is formed, a fire-resistant sealant 73 is provided between the cement-based flooring 71 and the decorative wooden board 42, and the exposed portions of the joint member 13 and the steel beam 12 are covered with a fire-resistant coating material 60.

[0046] According to the second embodiment, in addition to the effects similar to those described in (1-1) and (1-2) above, the following effects can be obtained. (2-1) In the column-beam connection structure 70, the heat transmitted through the steel beam 12 in the event of a fire is transferred to the wooden column 11 via the cement-based material 14, and also to the fire-resistant board 41 via the cement-based floor material 71, particularly the cement-based floor material filling section 72. As a result, the fire resistance of the wooden column 11 can be enhanced.

[0047] (2-2) The upper level 71a of the cement-based flooring material 71 is located above the lower level 41b of the fire-resistant board material 41. As a result, the lower end of the fire-resistant board material 41 is covered by the cement-based flooring material 71, making the lower end of the fire-resistant board material 41 less susceptible to direct fire damage. Consequently, the fire resistance of the lower end of the wooden column material 11 can be improved.

[0048] (2-3) A fire-resistant sealant 73 is provided between the decorative wooden board 42 and the cement-based flooring material 71. This enhances the fire resistance of the decorative wooden board 42 against heat conduction from the cement-based flooring material 71 to the decorative wooden board 42.

[0049] The first and second embodiments can be implemented with the following modifications. The first and second embodiments and the following modifications can be combined with each other to the extent that they do not contradict each other technically.

[0050] In the first and second embodiments, a fire-resistant filler 44 is provided on the chamfered portion 43 located on the upper and lower periphery edges of the wooden column 11. However, the wooden column 11 does not necessarily have to have the chamfered portion 43 and the fire-resistant filler 44.

[0051] In the second embodiment, the upper level 71a of the cement-based flooring material 71 may be lower than the lower level 41b of the fire-resistant board material 41. In this case, it is preferable that a fire-resistant sealant is provided between the fire-resistant board material 41, decorative wood board 42 and the cement-based flooring material 71. [Explanation of symbols]

[0052] 10...Column-beam connection structure, 11...Wooden column, 11a...Upper level of wooden column, 11b...Lower level of wooden column, 12...Steel beam, 12a...Upper level of steel beam, 12b...Lower level of steel beam, 13...Joint member, 13a...Upper level of joint member, 13b...Lower level of joint member, 14...Cement composition material, 21...Lower flange, 22...Upper flange, 23...Web, 30...Main body, 31...Bottom flange, 32...Upper flange, 35...Lower joint member, 36...Upper joint member, 41...Fireproof Board material, 41a... Upper level of fire-resistant board material, 41b... Lower level of fire-resistant board material, 42... Decorative wood board, 42b... Lower level of decorative wood board, 43... Chamfered section, 44... Fire-resistant filler, 45, 46... Connection hole, 48... Spacer, 51, 52... Adhesive filler, 53... Spacer, 54... Sponge ring, 60... Fire-resistant coating material, 61, 62... Fire-resistant coating material filling section, 70... Column-beam connection structure, 71... Cement-based flooring material, 71a... Upper level of cement-based flooring material, 72... Cement-based flooring material filling section, 73... Fire-resistant sealant.

Claims

1. A column-beam connection structure comprising a wooden column, a steel beam, and a joint member connecting the wooden column and the steel beam, A fire-resistant board covering the aforementioned wooden column, The steel beam material is covered with a fire-resistant covering material, The fire-resistant coating material has a fire-resistant coating material filling portion that is filled between the upper level of the fire-resistant plate material and the lower level of the steel beam material. The upper level of the wooden column is below the upper level of the fire-resistant board. A cement composition material is provided between the upper level of the wooden column and the lower level of the joint member. Column-beam connection structure.

2. A column-beam connection structure comprising a wooden column, a steel beam, and a joint member connecting the wooden column and the steel beam, A fire-resistant board covering the aforementioned wooden column, The steel beam material is covered with a fire-resistant covering material, The fire-resistant coating material has a fire-resistant coating material filling portion that is filled between the lower level of the fire-resistant plate material and the upper level of the steel beam material. The lower level of the aforementioned wooden column is above the lower level of the aforementioned fire-resistant board material. A cement composition material is provided between the lower level of the wooden column and the upper level of the joint member. Column-beam connection structure.

3. A column-beam connection structure comprising a wooden column, a steel beam, and a joint member connecting the wooden column and the steel beam, A fire-resistant board covering the aforementioned wooden column, The steel beam material is covered with a cement-based flooring material, The cement-based flooring material has a cement-based flooring material filling section that is filled between the lower level of the fire-resistant board material and the upper level of the steel beam material. The cement composition material is provided between the lower level of the wooden column and the upper level of the joint member, An upper joining member is provided on the upper flange portion of the aforementioned joint member. The upper connecting member is inserted into the connecting hole of the wooden column, A spacer is provided to maintain the gap between the lower level of the wooden column and the upper level of the joint member at the design thickness of the cement material. Column-beam connection structure.

4. A column-beam connection structure comprising a wooden column, a steel beam, and a joint member connecting the wooden column and the steel beam, A fire-resistant board covering the aforementioned wooden column, The steel beam material is covered with a cement-based flooring material, The cement-based flooring material has a cement-based flooring material filling section that is filled between the lower level of the fire-resistant board material and the upper level of the steel beam material. The cement composition material is provided between the lower level of the wooden column and the upper level of the joint member, An upper joining member is provided on the upper flange portion of the aforementioned joint member. The upper connecting member is inserted into the connecting hole of the wooden column, The upper joining member is provided with a sponge ring to prevent adhesive leakage from the connection hole. Column-beam connection structure.

5. A column-beam connection structure comprising a wooden column, a steel beam, and a joint member for connecting the wooden column and the steel beam, A fire-resistant board covering the aforementioned wooden column, The steel beam material is covered with a cement-based flooring material, The cement-based flooring material has a cement-based flooring material filling section that is filled between the lower level of the fire-resistant board material and the upper level of the steel beam material. The cement composition material is provided between the lower level of the wooden column and the upper level of the joint member, The upper level of the cement-based flooring material is higher than the lower level of the fire-resistant board material. Column-beam connection structure.

6. The wooden column has chamfered edges on the corners facing the fire-resistant board and the cement material, and the chamfered edges are filled with fire-resistant filler. A column-beam connection structure according to any one of claims 1 to 5.

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