Column structure and column connection structure

Abstract

To provide a column structure, a column connection structure, and a construction method of the column connection structure capable of securing fire resistance performance of a wooden column material.SOLUTION: The column connection structure 10 has an upper fireproof covering material 11A covering a side face of a wooden upper column material 16A and having an end face abutting on an upper face of the connection material 12, and a lower fireproof covering material 11B covering a side face of a wooden lower column material 16B and having an end face abutting on a lower face of the connection material 12. The wooden upper column material 11A has a chamfered portion around a vertical joint surface 21b abutting against the connecting material 12, the wooden lower column material 11B has a chamfered portion around a vertical joint surface 21a abutting against a lower surface of the connecting material 12, a fire-resistant filling material 32 is provided in a region surrounded by an upper surface of the connecting material 12, a chamfered slope of the chamfered portion of the wooden upper column material 11A, and an inner side surface of the upper fire-resistant covering material 16A, and a fire-resistant filling material 31 is provided in a region surrounded by a lower surface of the connecting material 12, the chamfered slope of the chamfered portion of the wooden lower column material 11B, and an inner side surface of the lower fire-resistant covering material 16B.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a column structure and a column connection structure. [Background technology]

[0002] For example, Patent Document 1 discloses a column structure using wooden columns with rectangular cross sections as structural materials, the outer surfaces of which are covered with a fire-resistant covering material made of a non-combustible board material such as gypsum board. Such column structures are usually delivered to the construction site with the fire-resistant covering material already attached to the wooden columns with screws or the like. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-179177 Summary of the Invention [Problem to be solved by the invention]

[0004] When the above-mentioned column structures are connected vertically, the ends of the fire-resistant covering material are located near the joints. Furthermore, in the event of a fire, the fire-resistant covering material shrinks from its ends due to thermal decomposition. Therefore, it is necessary to ensure the fire resistance of the wooden columns even at the joints of such column structures. [Means for solving the problem]

[0005] A column structure that solves the above problem comprises a wooden column having a vertical joint surface on a predetermined plane and a chamfered portion around the vertical joint surface, a fire-resistant coating material that covers the side of the wooden column and has an end surface on the predetermined plane, and a heat conduction reduction portion provided in an area surrounded by the predetermined plane, the chamfered slope of the chamfered portion, and the inner surface of the fire-resistant coating material.

[0006] In the above configuration, even if the end of the fire-resistant covering shrinks due to thermal decomposition, the heat conduction reducing portion is exposed before the wooden column material is exposed, which reduces heat conduction to the wooden column material in the event of a fire, thereby ensuring the fire resistance of the wooden column material at the connection part of the column structure.

[0007] A column connection structure that solves the above-mentioned problems is a column connection structure having wooden columns, connecting materials that connect the wooden columns, and fire-resistant covering materials that cover the sides of the wooden columns and have end faces that abut the installation surfaces of the connecting materials, wherein the wooden columns have chamfered portions around the vertical joint surfaces that abut the installation surfaces of the connecting materials, and a heat conduction reduction portion is provided in the area surrounded by the installation surfaces of the connecting materials, the chamfered slopes of the chamfered portions, and the inner surface of the fire-resistant covering materials.

[0008] In the above configuration, the longitudinal joint surfaces of the wooden columns abut against the connecting material, and even if the ends of the fire-resistant covering material shrink due to thermal decomposition, the heat conduction reducing portion is exposed before the wooden columns. As a result, heat conduction to the wooden columns is reduced in the event of a fire, ensuring the fire resistance of the wooden columns at the connection portions of the column structure. In addition, in the above configuration, the heat conduction reducing portion can be a fire-resistant filler material filled in the area.

[0009] A column connection structure that solves the above-mentioned problems is a column connection structure having a wooden upper column material, a wooden lower column material, and a connecting material that connects the upper wooden column material to the lower wooden column material, and has an upper fire-resistant covering material that covers the side of the upper wooden column material and has an end surface abutting the upper surface of the connecting material, and a lower fire-resistant covering material that covers the side of the lower wooden column material and has an end surface abutting the lower surface of the connecting material, wherein the upper wooden column material has a chamfered portion of the upper column material around the vertical joint surface that abuts the upper surface of the connecting material, and the lower wooden column material has a chamfered portion of the lower column material around the vertical joint surface that abuts the lower surface of the connecting material, and an upper heat conduction reduction portion is provided in the area surrounded by the upper surface of the connecting material, the chamfered slope of the chamfered portion of the upper column material, and the inner surface of the upper fire-resistant covering material, and a lower heat conduction reduction portion is provided in the area surrounded by the lower surface of the connecting material, the chamfered slope of the chamfered portion of the lower column material, and the inner surface of the lower fire-resistant covering material.

[0010] A construction method for the column connection structure of the above configuration includes a wooden lower column structure installation process for installing a wooden lower column structure having the wooden lower column material, the lower fire-resistant covering material, and the lower heat conduction reduction portion; a wooden upper column structure installation process for connecting the wooden upper column structure to the wooden lower column structure so that a predetermined gap is formed between the wooden upper column structure having the wooden upper column material, the upper fire-resistant covering material, and the upper heat conduction reduction portion and the wooden lower column structure; a formwork installation process for installing a formwork surrounding the gap; a connecting material filling process for filling the gap with connecting material that connects the wooden upper column structure and the wooden lower column structure; and a formwork removal process for removing the formwork.

[0011] In the above-mentioned configuration, the vertical joint surfaces of the upper wooden column and the lower wooden column abut against the connecting material, and even if the end of the fire-resistant covering material shrinks due to thermal decomposition, the heat conduction reducing portion is exposed before the wooden column. As a result, heat conduction to the wooden column is reduced in the event of a fire, and the fire resistance of the wooden column at the connecting portion of the column structure can be ensured.

[0012] The column connection structure that solves the above problem is a column connection structure having a wooden upper column material, a wooden lower column material, and a connecting material that connects the upper wooden column material and the lower wooden column material, and has an upper fire-resistant covering material that covers the side surface of the upper wooden column material and has an end surface abutting the upper surface of the connecting material, and a lower fire-resistant covering material that covers the side surface of the lower wooden column material and has an end surface abutting the lower surface of the connecting material, and the upper wooden column material has a chamfered portion of the upper column material around the vertical joint surface that abuts the upper surface of the connecting material, and the lower wooden column material has: The lower column material has a chamfered portion around the vertical joint surface abutting the lower surface of the connecting material, and an upper heat conduction reducing portion is provided in the area surrounded by the upper surface of the connecting material, the chamfered slope of the upper column material chamfered portion, and the inner surface of the upper fire-resistant coating material, and a lower heat conduction reducing portion is provided in the area surrounded by the lower surface of the connecting material, the chamfered slope of the lower column material chamfered portion, and the inner surface of the lower fire-resistant coating material, and a fire-resistant joint material surrounding the connecting material is provided between the upper fire-resistant coating material and the lower fire-resistant coating material.

[0013] The construction method for the column connection structure configured as described above includes a wooden lower column structure installation process for installing a wooden lower column structure having the wooden lower column material, the lower fire-resistant covering material, and the lower heat conduction reduction portion; a wooden upper column structure installation process for connecting the wooden upper column structure to the wooden lower column structure so that a predetermined gap is formed between the wooden upper column structure having the wooden upper column material, the upper fire-resistant covering material, and the upper heat conduction reduction portion and the wooden lower column structure; a formwork installation process for positioning and installing the fire-resistant joint material using a positioning jig as a formwork surrounding the gap; a connecting material filling process for filling the gap with connecting material that connects the wooden upper column structure and the wooden lower column structure; and a removal process for removing the positioning jig.

[0014] According to the above-mentioned configuration, the vertical joint surfaces of the upper wooden column and the lower wooden column abut against the connecting material, and even if the end of the fire-resistant covering material shrinks due to thermal decomposition, the heat conduction reducing portion is exposed before the wooden column. Furthermore, the fire-resistant joint material can also absorb heat associated with a fire. As a result, heat conduction to the wooden column is reduced during a fire, ensuring the fire resistance of the wooden column at the connection portion of the column structure. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 2 is a diagram showing a schematic configuration of a basic structure relating to the structural performance of a pillar connection structure in the first embodiment. [Figure 2] FIG. 2 is a cross-sectional view schematically showing an example of a pillar structure in the first embodiment. [Figure 3] 4 is a flowchart showing an example of a construction method for a column connection structure in the first embodiment. [Figure 4] FIG. 10 is a diagram showing a schematic view of the alignment process in the wooden upper pillar structure installation process in the first embodiment. [Figure 5] FIG. 10 is a diagram showing a state in which the upper wooden pillar structure is connected to the lower wooden pillar structure in the upper wooden pillar structure installation step in the first embodiment. [Figure 6]FIG. 3 is a diagram schematically illustrating how a cement composition is poured in a connecting material filling step in the first embodiment. [Figure 7] FIG. 4 is a diagram schematically illustrating a state in which a formwork removal step has been completed in the first embodiment. [Figure 8] 5A and 5B are diagrams for explaining the function of the pillar connection structure in the first embodiment. [Figure 9] 10 is a flowchart showing an example of a construction method for a column connection structure in the second embodiment. [Figure 10] FIG. 10 is a diagram schematically illustrating a state in which a formwork installation step is completed in the second embodiment. [Figure 11] FIG. 10 is a diagram schematically illustrating a state in which a jig removing step is completed in the second embodiment. [Figure 12] 10A and 10B are diagrams for explaining the function of the pillar connection structure in the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0016] (First embodiment) A first embodiment of a column structure, a column connection structure, and a method for constructing the column connection structure will be described with reference to Figures 1 to 8. First, the basic structure relating to the structural performance of the column connection structure will be described.

[0017] As shown in Figure 1, the column connection structure 10 includes an upper wooden column member 11A, a lower wooden column member 11B, and a connecting member 12 that connects the upper wooden column member 11A and the lower wooden column member 11B. In the column connection structure 10, load is transmitted between the upper wooden column member 11A and the lower wooden column member 11B via the connecting member 12. The upper wooden column member 11A and the lower wooden column member 11B have the same basic structure. Therefore, hereinafter, when there is no need to distinguish between the upper wooden column member 11A and the lower wooden column member 11B, they will simply be referred to as the wooden column member 11.

[0018] The connecting material 12 is provided between the upper wooden post material 11A and the lower wooden post material 11B. The connecting material 12 is a hardened cement composition. The cement composition is a mortar made by mixing cement and water. The cement composition is preferably a non-shrinkage mortar. The connecting material 12 is formed by placing the upper wooden post material 11A and the lower wooden post material 11B in a predetermined position and pouring a cement composition between them.

[0019] (column structure) A pillar structure 15 using wooden pillar material 11 will be described. As shown in FIG. 2, the pillar structure 15 includes a wooden pillar material 11, a fire-resistant covering material 16, and fire-resistant fillers 31 and 32.

[0020] The wooden column 11 has a rectangular cross section. The wooden column 11 has planar vertical joint surfaces 21a, 21b that are connected to the connecting members 12. The vertical joint surface 21a, which is the upper surface of the wooden column 11, is provided on a predetermined upper plane 22a and is the upper vertical joint surface when the wooden column 11 is installed as a lower wooden column 11B. The vertical joint surface 21b, which is the lower surface of the wooden column 11, is provided on a predetermined lower plane 22b and is the lower vertical joint surface when the wooden column 11 is installed as an upper wooden column 11A with the upper surface of the connecting member 12 as the installation surface.

[0021] The wooden post 11 has chamfered portions 25, 26 at the corners located around each of the vertical joint surfaces 21a, 21b. The chamfered portion 25 functions as a lower post chamfered portion when the wooden post 11 is installed as a lower wooden post 11B. The chamfered portion 26 functions as an upper post chamfered portion when the wooden post 11 is installed as an upper wooden post 11A. The chamfered portions 25, 26 are preferably shaped so that the end faces and outer surfaces of the wooden post 11 are chamfered by approximately 20 mm.

[0022] The wooden post 11 has a connection hole 27 at its upper end and a connection hole 28 at its lower end. The connection holes 27, 28 have openings at their end faces and extend in the extension direction of the wooden post 11. The connection holes 27, 28 are formed so as to surround the center of the wooden post 11.

[0023] The pillar structure 15 has a connecting member 29 protruding upward from the vertical joint surface 21a. The connecting member 29 is a metal rod. The connecting member 29 is fixed to the wooden pillar 11 using the connection hole 27. Specifically, the connecting member 29 is inserted into the connection hole 27, and then fixed to the wooden pillar 11 by hardening an adhesive that is injected through an injection hole (not shown) formed in the wooden pillar 11. An epoxy resin adhesive containing epoxy resin as a main component is preferred as the adhesive. When the adhesive hardens, an adhesive filler 30 is formed.

[0024] Each side of the wooden column 11 is covered with a fire-resistant covering material 16. The fire-resistant covering material 16 is a material that is less flammable than the wooden column 11, and can be made of a non-combustible board material such as water-resistant reinforced gypsum board, which has excellent water resistance, or calcium silicate board. The fire-resistant covering material 16 is attached to the wooden column 11 with screws or the like (not shown). Note that FIG. 2 shows a case where each side is made of two overlapping sheets of water-resistant reinforced gypsum board.

[0025] When the wooden column 11 is installed as a lower wooden column 11B, the fire-resistant covering material 16 functions as a lower fire-resistant covering material 16B (see FIG. 4). When the wooden column 11 is installed as an upper wooden column 11A, the fire-resistant covering material 16 functions as an upper fire-resistant covering material 16A (see FIG. 4).

[0026] The fire-resistant covering material 16 is provided on a predetermined upper plane 22a so that its upper end surface 16a is flush with the vertical joint surface 21a of the wooden pillar 11. The fire-resistant covering material 16 is also provided on a predetermined lower plane 22b so that its lower end surface 16b is flush with the vertical joint surface 21b of the wooden pillar 11. Suitable fire-resistant covering materials 16 include, for example, dry-hardening inorganic fillers such as "Gyptite (registered trademark)" and "Tiger Trabond (registered trademark)" (both manufactured by Yoshino Gypsum Co., Ltd.).

[0027] The fire-resistant filler 31 and the fire-resistant filler 32 function as heat conduction reducing portions. The fire-resistant filler 31 is provided in the area surrounded by the upper predetermined plane 22a, the chamfered slope of the chamfered portion 25, and the inner surface of the fire-resistant covering material 16. When the wooden column 11 is installed as the wooden lower column 11B, the fire-resistant filler 31 functions as a lower fire-resistant filler disposed below the connecting member 12.

[0028] The fire-resistant filler 32 is provided in the area surrounded by the lower predetermined plane 22b, the chamfered slope of the chamfered portion 26, and the inner surface of the fire-resistant covering material 16. When the wooden column 11 is installed as the wooden upper column 11A, the fire-resistant filler 32 functions as an upper fire-resistant filler placed above the connecting material 12.

[0029] The pillar structure 15 configured as described above functions as a wooden upper pillar structure 15A (see FIG. 3) when the wooden pillar 11 is installed as a wooden upper pillar 11A, and functions as a wooden lower pillar structure 15B (see FIG. 3) when the wooden pillar 11 is installed as a wooden lower pillar 11B.

[0030] (Construction method for column connection structure) As shown in Figure 3, the construction method for the column connection structure 10 includes a wooden lower column structure installation process (step S101), a wooden upper column structure installation process (step S102), a formwork installation process (step S103), a connecting material filling process (step S104), and a formwork removal process (step S105).

[0031] In the wooden lower column structure installation process (step S101), the wooden lower column structure 15B is installed relative to the foundation with joint members, joint members, column structure (none of which are shown in FIG. 3), etc. The wooden lower column structure 15B becomes the wooden upper column structure 15A relative to the foundation, joint members, and column structure, and is therefore installed in the same manner as the wooden upper column structure installation process described next.

[0032] In the wooden upper column structure installation process (step S102), the wooden upper column structure 15A is installed so that a predetermined gap is formed between the vertical joint surface 21a of the wooden lower column structure 15B and the vertical joint surface 21b of the wooden upper column structure 15A.

[0033] Specifically, as shown in Fig. 4, the wooden upper column structure 15A is transported above the wooden lower column structure 15B. Then, after aligning the joining members 29 so that they are inserted into the connection holes 28 of the wooden upper column structure 15A, the wooden upper column structure 15A is lowered. The adhesive described above has been injected into the connection holes 28 of the wooden upper column structure 15A.

[0034] 5, the wooden upper column structure 15A is lowered to a position where a predetermined separation space 35 is formed between the wooden lower column structure 15B and the wooden upper column structure 15A. After that, the wooden lower column structure 15B and the wooden upper column structure 15A are connected with a metal temporary fixing jig 40. This temporary fixing jig 40 is fixed to the wooden upper column material 11A and the wooden lower column material 11B with fastening members 41 that penetrate the fire-resistant covering material 16. The temporary fixing jig 40 is removed after the connecting members 12 are formed.

[0035] 6, in the formwork installation step (step S103), formwork 42 is installed so as to surround the above-mentioned space 35. Some of formwork 42 are provided with through-holes (not shown) for filling the space 35 with a cement composition.

[0036] In the connecting material filling step (step S104), a cement composition is injected into the gap 35 as shown by the arrows in FIG. 6, using through holes provided in some of the forms 42. 7, when the cement composition injected into the gap 35 hardens, the connecting material 12 is formed. As a result, the gap 35 is filled with the connecting material 12.

[0037] In the formwork removal step (step S105), the formwork 42 used for filling the cement composition is removed. Also, in the formwork removal step, the temporary fixing jig 40 is removed. In the column connection structure 10 in which the upper wooden column structure 15A and the lower wooden column structure 15B are connected in this manner, the outer surfaces thereof are covered with the decorative wooden board 45. As a result, the openings formed in the upper fire-resistant covering material 16A and the lower fire-resistant covering material 16B in conjunction with the installation of the temporary fixing jig 40 are covered and hidden by the decorative wooden board 45.

[0038] The operation and effects of the first embodiment will be described. (1-1) As shown in Fig. 8, in the column connection structure 10, even if the lower end of the upper fire-resistant covering material 16A and the upper end of the lower fire-resistant covering material 16B shrink due to thermal decomposition in the event of a fire, the fire-resistant fillers 31, 32 are exposed before the wooden columns 11A, 11B are exposed. Therefore, the wooden columns 11A, 11B are less susceptible to the effects of fire, and the fire resistance of the wooden column 11 can be ensured.

[0039] Furthermore, after the wooden upper pillar structure installation step (step S202) is completed, there is no need to separately attach non-combustible board materials that constitute the fire-resistant covering material to each pillar structure 15A, 15B, so the construction method can also be simplified.

[0040] (Second embodiment) A second embodiment of the pillar connection structure will be described with reference to Figures 9 to 12. The pillar connection structure of the second embodiment has the same main configuration as the pillar connection structure of the first embodiment. Therefore, in the second embodiment, only the parts that are different from the first embodiment will be described in detail, and the same parts as those in the first embodiment will be denoted by the same reference numerals and will not be described in detail again.

[0041] 9, the construction method for a column connection structure includes a wooden lower column structure installation step (step S201), a wooden upper column structure installation step (step S202), a formwork installation step (step S203), a connecting material filling step (step S204), and a jig removal step (step S205). Note that the wooden lower column structure installation step (step S201) and the wooden upper column structure installation step (step S202) are the same steps as the above-mentioned steps S101 and S102. Therefore, the formwork installation step (step S203), the connecting material filling step (step S204), and the jig removal step (step S205) will be described below.

[0042] 10, in the formwork installation step (step S203), a fire-resistant joint material 50 is installed between the upper fire-resistant covering material 16A of the upper wooden column structure 15A and the lower fire-resistant covering material 16B of the lower wooden column structure 15B as a formwork installed to surround the above-mentioned separation space 35. The fire-resistant joint material 50 is a member that is less flammable than the wooden column material 11, and can be made of a water-resistant reinforced gypsum board, which has excellent water resistance, or a non-combustible board material such as calcium silicate board.

[0043] The fireproof joint sealant 50 is attached to the upper fireproof covering material 16A and the lower fireproof covering material 16B using a positioning jig 55. The positioning jig 55 has a mounting base 56, fastening members 57, and spacers 58. The mounting base 56 is a plate disposed so as to straddle the upper fireproof covering material 16A and the lower fireproof covering material 16B. The fastening members 57 are arranged so that the upper part of the mounting base 56 is fastened to the upper fireproof covering material 16A, the lower part of the mounting base 56 is fastened to the lower fireproof covering material 16B, and the center of the mounting base 56 is fastened to the fireproof joint sealant 50 via the spacers 58. The spacers 58 are members that ensure that the inner surface of the fireproof joint sealant 50 is flush with the outer surfaces of the upper wooden column material 11A and the lower wooden column material 11B when the mounting base 56 is attached to the upper fireproof covering material 16A and the lower fireproof covering material 16B. The positioning jigs 55 are provided at a plurality of locations in a direction perpendicular to the plane of the paper in Fig. 9. The positioning jigs 55 are attached to the upper fireproof covering material 16A and the lower fireproof covering material 16B with the fireproof joint material 50 fastened to the mounting base plate 56. Some of the fireproof joint materials 50 are provided with through-holes (not shown) for filling the gap spaces 35 with a cement composition.

[0044] In the connecting material filling step (step S204), a cement composition is injected into the gap 35 using through holes provided in some of the fire-resistant joint materials 50. 11 , when the cement composition injected into the gap 35 hardens, the connecting material 12 is formed. As a result, the space surrounded by the refractory joint material 50 in the gap 35 is filled with the connecting material 12.

[0045] In the jig removal process (step S205), the positioning jig 55 is removed from the fireproof joint material 50, the upper fireproof covering material 16A, and the lower fireproof covering material 16B. Then, a groove filler 59 is filled into the peripheral groove formed by the fireproof joint material 50, the upper fireproof covering material 16A, and the lower fireproof covering material 16B. The groove filler 59 is provided so as to be flush with the outer surfaces of the upper fireproof covering material 16A and the lower fireproof covering material 16B. Suitable groove fillers for the groove filler 59 include the aforementioned "Gyptite" and "Tiger Trabond" (both manufactured by Yoshino Gypsum Co., Ltd.). In this manner, the column connection structure 60 is formed. Furthermore, the outer surfaces of the column connection structure 60 are covered with the decorative wood board 45, thereby concealing the openings formed in the upper fireproof covering material 16A and the lower fireproof covering material 16B due to the installation of the positioning jig 55.

[0046] According to the second embodiment, in addition to the effects similar to those described in (1-1) above, the following effects can be obtained. (2-1) As shown in Fig. 12, in the case of a fire occurring in the column connection structure 60, heat is absorbed not only by the lower end of the upper fire-resistant covering material 16A and the upper end of the lower fire-resistant covering material 16B but also by the fire-resistant joint material 50. This improves the fire resistance of the wooden column 11.

[0047] (2-2) By using the fire-resistant joint material 50 as a formwork, the removal of the formwork can be omitted. In addition, since the connecting material 12 is formed so as not to come into contact with the fire-resistant covering material 16, part of the load transmitted between the wooden pillars 11 does not act on the fire-resistant covering material 16.

[0048] The first and second embodiments can be modified as follows: The first and second embodiments and the following modifications can be combined and implemented within the scope of technical compatibility.

[0049] In the wooden upper pillar structure installation process (steps S102, S202) of the first and second embodiments, the wooden upper pillar structure 15A may be connected to the wooden lower pillar structure 15B using, for example, predetermined equipment, without using a temporary fixing jig 40. [Explanation of symbols]

[0050] 10...Column connection structure, 11...Wooden column material, 11A...Wooden upper column material, 11B...Wooden lower column material, 12...Connection material, 15...Column structure, 15A...Wooden upper column structure, 15B...Wooden lower column structure, 16...Fireproof covering material, 16A...Top fireproof covering material, 1 6a...upper end surface, 16B...lower fireproof covering material, 16b...lower end surface, 21a, 21b...vertical joint surface, 22a...upper predetermined plane, 22b...lower predetermined plane, 25...chamfered portion that can function as a lower pillar material chamfer, 26...upper pillar material chamfered portion. chamfered portion that can function as a heat conduction reducing portion, 27, 28...connection holes, 29...jointing member, 30...adhesive filler, 31...fire-resistant filler as an upper heat conduction reducing portion, 32...fire-resistant filler as a lower heat conduction reducing portion, 35...separation space, 40...temporary fixing jig, 41...fastening member, 42...formwork, 45...decorative wood board, 50...fire-resistant joint material that functions as a formwork, 55...positioning jig, 56...mounting board, 57...fastening member, 58...spacer, 59...groove filler, 60...column connection structure.

Claims

1. a wooden post having a vertical joint surface on a predetermined plane; a fire-resistant covering material covering the side surface of the wooden column and having an end surface on the predetermined plane; A chamfered portion provided around the entire outer periphery of the corner of the vertical joint surface where the vertical joint surface and the side surface are connected; a heat conduction reducing portion provided in an area surrounded by the predetermined plane, the chamfered slope of the chamfered portion, and the inner surface of the fire-resistant covering material; Column structure.

2. The heat conduction reducing portion is a refractory filler material filled in the region. The column structure of claim 1 .

3. A column connection structure having wooden columns, connecting members that connect the wooden columns, and fire-resistant covering members that cover the side surfaces of the wooden columns and have end surfaces that abut against the installation surfaces of the connecting members, The wooden column has a vertical joint surface that abuts on the installation surface of the connecting material, and has a chamfered portion provided around the entire periphery of the outer corner of the vertical joint surface where the vertical joint surface and the side surface are connected, A heat conduction reducing portion is provided in an area surrounded by the installation surface of the connecting material, the chamfered slope of the chamfered portion, and the inner surface of the fire-resistant covering material. Pillar connection structure.

4. The heat conduction reducing portion is a refractory filler material filled in the region. The column connection structure according to claim 3 .

5. A column connection structure having a wooden upper column member, a wooden lower column member, and a connecting member that connects the wooden upper column member and the wooden lower column member, an upper fireproof covering material that covers the side surface of the wooden upper column material and has an end surface abutting the upper surface of the connecting material; a lower fireproof covering material that covers the side surface of the wooden lower post material and has an end surface abutting the lower surface of the connecting material; The wooden upper post member has a lower vertical joint surface that abuts on the upper surface of the connecting member, and has a chamfered portion of the upper post member around the entire periphery of the outer corner of the lower vertical joint surface where the lower vertical joint surface and the side surface are connected, The wooden lower post material has an upper vertical joint surface that abuts the lower surface of the connecting material, and has a lower post material chamfered portion around the entire periphery of the outer corner of the upper vertical joint surface where the upper vertical joint surface and the side surface are connected, An upper heat conduction reducing portion is provided in an area surrounded by the upper surface of the connecting material, the chamfered slope of the upper column material chamfered portion, and the inner surface of the upper fire-resistant covering material, A lower heat conduction reducing portion is provided in an area surrounded by the lower surface of the connecting material, the chamfered slope of the chamfered portion of the lower post material, and the inner surface of the lower fire-resistant covering material. Pillar connection structure.

6. A column connection structure having a wooden upper column member, a wooden lower column member, and a connecting member that connects the wooden upper column member and the wooden lower column member, an upper fireproof covering material that covers the side surface of the wooden upper column material and has an end surface abutting the upper surface of the connecting material; a lower fireproof covering material that covers the side surface of the wooden lower post material and has an end surface abutting the lower surface of the connecting material; The wooden upper post member has a lower vertical joint surface that abuts on the upper surface of the connecting member, and has a chamfered portion of the upper post member around the entire periphery of the outer corner of the lower vertical joint surface where the lower vertical joint surface and the side surface are connected, The wooden lower post material has an upper vertical joint surface that abuts the lower surface of the connecting material, and has a lower post material chamfered portion around the entire periphery of the outer corner of the upper vertical joint surface where the upper vertical joint surface and the side surface are connected, An upper heat conduction reducing portion is provided in an area surrounded by the upper surface of the connecting material, the chamfered slope of the upper column material chamfered portion, and the inner surface of the upper fire-resistant covering material, An upper heat conduction reducing portion is provided in an area surrounded by the upper surface of the connecting material, the chamfered slope of the upper column material chamfered portion, and the inner surface of the upper fire-resistant covering material, A lower heat conduction reducing portion is provided in an area surrounded by the lower surface of the connecting material, the chamfered slope of the lower post material chamfered portion, and the inner surface of the lower fire-resistant covering material, A fire-resistant joint material surrounding the connecting material is provided between the upper fire-resistant covering material and the lower fire-resistant covering material. Pillar connection structure.

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