JP7423385B2 - Joint structure between wooden wall materials and steel columns - Google Patents

Description

The present invention relates to a joint structure between a wooden wall material and a steel column, which has excellent workability.

Conventionally, it has been known to construct a load-bearing wall by joining wooden wall materials and steel beams (see Non-Patent Document 1, etc.).
The joint structure between the wooden wall material and the steel beam is CLT (Cross
The upper end side of the CLT wall panel as a wooden wall material formed from laminated timber (orthogonal laminated board) is connected to the upper steel beam, and the lower end side of the CLT wall panel is connected to the lower steel beam. It has a similar structure.

Shinkenchiku Volume 94, No. 12 “Hyogo Prefectural Forestry Hall” p150-p155, published October 1, 2019, Shinkenchikusha Co., Ltd.

However, in the above-mentioned joint structure of wooden wall materials and steel beams, many materials such as shear hardware, tension bolts, and non-shrinkage mortar filled between the wooden walls and steel beams are used to connect the wooden wall materials and steel beams. In addition to requiring additional parts, the joint structure was complicated, creating problems in terms of workability.
In view of the above-mentioned problems, the present invention provides a joint structure between a wooden wall material and a steel column, which has excellent workability and has a fireproof structure that can ensure the fireproof performance of the steel column.

The joint structure between a wooden wall material and a steel column according to the present invention is such that a groove formed to open in the plate surface of the wooden wall material and a part of the outer circumferential surface of the steel column are fitted, This is a joint structure of the wooden wall material and the steel column in which the wooden wall material and the steel column are joined by a joining means, and the fireproofing is applied so as to cover the surface of the steel column located outside the board surface of the wooden wall material. It is characterized by having an outer fire-resistant treated part that is made of wood, so it has excellent workability and has a fire-resistant structure that can ensure the fire-resistant performance of the steel columns. Can provide a joint structure.
In addition, the joint structure between a wooden wall material and a steel column according to the present invention includes a state in which a groove formed to open in the plate surface of the wooden wall material and a part of the outer circumferential surface of the steel column are fitted, Alternatively, the wooden wall material and the steel column are joined by a joining means in a state where the plate surface or end surface of the wooden wall material and a part of the outer peripheral surface of the steel column are in contact with each other. The structure includes an outer fireproofing section in which a fireproofing material is provided to cover the surface of a steel column located outside the board surface of the wooden wall material, and a circumferential direction of the steel column in the outer fireproofing section. an inner fireproofing section provided to extend from both ends to the inside of the wooden wall material; Consisting of a groove formed along the surface of the steel column so as to extend from the board surface of the wooden wall material to the inside of the wooden member, and a fireproof material provided to fill the groove . As a result, it is possible to provide a joint structure between wooden wall materials and steel columns that has excellent workability and has a fireproof structure that can ensure the fireproof performance of steel columns. The fire resistance of columns can be improved.
In addition, the joint structure between a wooden wall material and a steel column according to the present invention includes a state in which a groove formed to open in the plate surface of the wooden wall material and a part of the outer circumferential surface of the steel column are fitted, Alternatively, the wooden wall material and the steel column are joined by a joining means in a state where the plate surface or end surface of the wooden wall material and a part of the outer peripheral surface of the steel column are in contact with each other. A boundary structure in which a thermally expandable fireproof material is provided so as to contact the steel column and the wooden wall near both ends of the surface of the steel column located outside the board surface of the wooden wall. The outer side is constructed by providing fireproofing material so as to cover the adjacent fireproofing section, the surface of the steel column located outside the board surface of the wooden wall material, and the surface of the thermally expandable fireproofing material of the fireproofing section near the boundary. Since it is characterized by being equipped with a fireproofing treatment part, it is possible to provide a joint structure between wooden wall materials and steel columns that has excellent workability and has a fireproof structure that can ensure the fireproof performance of the steel columns. The function of the thermally expandable fireproofing material in the fireproofing area near the boundary can further improve the fireproofing performance of the steel column.
In addition, the joint structure between a wooden wall material and a steel column according to the present invention includes a state in which a groove formed to open in the plate surface of the wooden wall material and a part of the outer circumferential surface of the steel column are fitted, Alternatively, the wooden wall material and the steel column are joined by a joining means in a state where the plate surface or end surface of the wooden wall material and a part of the outer peripheral surface of the steel column are in contact with each other. A structure in which the wooden wall material and the steel column come into contact between a groove formed to open in the board surface of the wooden wall material and a part of the outer peripheral surface of the steel column fitted into the groove. A thermally expandable fireproofing treatment section configured with a thermally expandable fireproofing material, or between a wooden wall material and a part of the outer circumferential surface of a steel column, or a wooden wall material and a steel column. A thermally expandable fireproofing treatment section is configured with a thermally expandable fireproofing material provided so as to be in contact with the material, and a fireproofing material is provided to cover the surface of the steel column located outside the board surface of the wooden wall material. The joint between the wooden wall material and the steel column has a fireproof structure that is excellent in workability and can ensure the fireproof performance of the steel column. In addition to providing a structure, the fire-resistant performance of the steel column can be further improved due to the function of the thermally-expandable fire-resistant material in the thermally-expandable fire-resistant treated section.
In addition, the temperature rise suppressing section is provided with a temperature rise suppressing means in contact with the steel column to suppress the temperature rise of the steel column in the event of a fire.The function of the temperature rise suppressing section improves the fire resistance of the steel column can be further improved.

FIG. 1 is a perspective view of a wall constructed from a joint structure of wooden wall materials and steel columns, viewed from the indoor side (Embodiment 1). FIG. 2 is a perspective view showing a groove in a wooden wall material and a part of the outer circumferential surface of a steel column separately (Embodiment 1). FIG. 1 is a perspective view of a wall constructed from a joint structure of wooden wall materials and steel columns, viewed from the outdoor side (Embodiment 1). A plan view showing the fitted state between the groove of the wooden wall material and a part of the outer circumferential surface of the steel column, and (a) shows the fitted state of the H-shaped steel forming the steel column and the groove of the wooden wall material. , (b) is a plan view (Embodiment 1) showing a fitted state between a rectangular steel pipe constituting a steel column and a groove in a wooden wall material. FIG. 2 is a perspective view showing a state in which a wooden wall material and a steel column are joined using a joining means (Embodiment 1). A cross-sectional view showing the fireproof structure of H-beams installed in the joint structure between wooden wall materials and H-beams as steel columns ((a) is the fireproof structure of Embodiment 1, (b) is the fireproof structure of Embodiment 2) (c) shows the fireproof structure of Embodiment 3, and (d) shows the fireproof structure of Embodiment 5). A cross-sectional view showing the fireproof structure of the square steel pipe provided in the joint structure between the wooden wall material and the square steel pipe as the steel column ((a) is the fireproof structure of Embodiment 1, (b) is the fireproof structure of Embodiment 2) (c) shows the fireproof structure of Embodiment 3, and (d) shows the fireproof structure of Embodiment 5). (a) is a perspective view showing a state in which a wooden wall material and a steel column are joined using a joining means, and (b) is an exploded perspective view showing the joining means (Embodiment 6). (a) is a plan view showing a state where a wooden wall material and a steel frame column are joined using a joining means, and (b) is a plan view showing a state where a wooden wall material and a steel frame column are joined using a joining means. The front view seen from the outside (Embodiment 6). (a) is a perspective view (embodiment 7) showing a state in which the wooden wall material and the steel column are joined using the upper and lower joining means, and (b) is a perspective view showing the state in which the wooden wall material and the steel pillar are joined using the upper joining means. FIG. 12 is a perspective view showing a state in which the parts are joined using the method (Embodiment 8). (a) is a perspective view showing a state where a wooden wall material and a steel frame column are joined using a joining means, and (b) is a front view showing a state where a wooden wall material and a steel frame column are joined using a joining means. Figure (Embodiment 11). (a) is a perspective view showing a state where a wooden wall material and a steel frame column are joined using a joining means, and (b) is a front view showing a state where a wooden wall material and a steel frame column are joined using a joining means. Figure (Embodiment 11). Cross-sectional views showing the fireproof structure of H-beams installed in the joint structure between wooden wall materials and H-beams as steel columns ((a) is Embodiment 1, (b) is Embodiment 2, (c) is Embodiment 3 (d) shows a fireproof structure corresponding to Embodiment 5 (Embodiment 11)). A sectional view showing a fireproof structure of a square steel pipe provided in a joint structure between a wooden wall material and a square steel pipe as a steel column ((a) is Embodiment 1, (b) is Embodiment 2, and (c) is Embodiment 3 (d) shows a fireproof structure corresponding to Embodiment 5 (Embodiment 11)). (a) is a perspective view showing a state where a wooden wall material and a steel frame column are joined using a joining means, and (b) is a cross section showing a state where a wooden wall material and a steel frame column are joined using a joining means. Figure (Embodiment 12). (a) is a perspective view showing a state where a wooden wall material and a steel frame column are joined using a joining means, and (b) is a plane view showing a state where a wooden wall material and a steel frame column are joined using a joining means. Figure (Embodiment 12). Cross-sectional views showing the fireproof structure of H-beams installed in the joint structure between wooden wall materials and H-beams as steel columns ((a) is Embodiment 1, (b) is Embodiment 2, (c) is Embodiment 3 (d) shows a fireproof structure corresponding to Embodiment 5 (Embodiment 12)). A sectional view showing a fireproof structure of a square steel pipe provided in a joint structure between a wooden wall material and a square steel pipe as a steel column ((a) is Embodiment 1, (b) is Embodiment 2, and (c) is Embodiment 3 (d) shows a fireproof structure corresponding to Embodiment 5 (Embodiment 12)). The perspective view which shows the floor structure using the wall constructed by the joint structure of the wooden wall material and the steel frame column. A cross-sectional view of a portion near the spandrel of a building equipped with a spandrel as a wall constructed by a joint structure of wooden wall materials and steel columns.

Embodiment 1
As shown in FIGS. 1 to 5, the joint structure between wooden wall materials and steel columns according to Embodiment 1 includes two steel columns 3A (3) and One groove 2A (2) for fitting the other steel column 3B (3) and a part of the outer circumferential surface of one steel column 3A to fit a part of the outer circumferential surface of the other steel column 3B. The wooden wall material 1 is formed such that the other groove 2B (2) for the purpose is open to one of the plate surfaces 11, and the wooden wall material 1 is formed between the steel column 3A on one side and the steel column 3B on the other side. A part of the outer circumferential surface of one steel column 3A is fitted into one groove 2A of the wooden wall material 1, and a part of the outer circumferential surface of the other steel column 3B and the wooden wall are arranged so as to straddle each other. In a state where the other groove 2B of the material 1 is fitted, the wooden wall material 1 and the steel columns 3A, 3B are joined by the joining means 4, and a joint structure is created in which the steel pillar 3 has a fireproof structure. .

In other words, a part of the outer peripheral surface of the steel column 3A is sandwiched between the grooves 2A of the wooden wall material 1, and a part of the outer circumferential surface of the steel column 3B is sandwiched between the grooves 2B of the wooden wall material 1. After fitting a part of the outer peripheral surface of the steel columns 3A, 3B into the grooves 2A, 2B of the material 1, a joint structure was created in which the wooden wall material 1 and the steel columns 3A, 3B were joined using the joining means 4. .
In this way, by fitting a part of the outer circumferential surface of the steel column 3A, 3B into the grooves 2A, 2B of the wooden wall material 1, the outer circumferential surface of the steel column 3 can be formed in the grooves 2A, 2B of the wooden wall material 1. The wooden wall material 1 is partially sandwiched and positioned at a predetermined position, and the movement of the wooden wall material 1 in the left and right direction (horizontal direction) is restrained by the steel columns 3A and 3B.
Then, by joining the wooden wall material 1 and the steel columns 3A, 3B in this state using the joining means 4, a wooden wall can be easily constructed.

That is, when joining one piece of wooden wall material 1 so as to span over two or more steel columns 3A, 3B, etc. that are erected at intervals, one plate of one piece of wooden wall material 1 Grooves 2A, 2B, . . . corresponding to the respective steel columns 3A, 3B, . . . are provided in the surface 11. Then, the wooden wall material 1 and the steel pillars 3A, 3B are placed in a state where a part of the outer circumferential surface of the two or more steel pillars 3A, 3B... and the grooves 2A, 2B... of one wooden wall material 1 are fitted. ... are joined using the joining means 4, so that the wooden wall material 2 is restrained by two or more steel columns 3A, 3B, etc., so that two or more steel columns 3A, 3B... 3B... makes it possible to construct a wall with improved binding force against the wooden wall material 1.

The wooden wall material 1 is made of, for example, CLT (Cross
Laminated Timber (orthogonal laminated board) or glulam or LVL (Laminated Veneer)
It is a plate-like member made of wood such as lumber (laminated veneer lumber), plywood, or lumber.
Furthermore, as stipulated in Article 1 of the Japanese Agricultural Standards for Orthogonal Laminated Boards in the Ministry of Agriculture, Forestry and Fisheries Notification No. 3079, CLT is defined as "sawn board or small square lumber (made of sawn board or small square lumber (made of sawn board or small square lumber (long and long) with their fiber directions almost parallel to each other"). (including those adjusted by bonding and bonding in the width direction) are arranged or bonded in the width direction with their fiber directions approximately parallel to each other, and are laminated and bonded with the fiber directions approximately perpendicular to each other in three or more layers. It is a general material with a structure of
That is, CLT is a wood made by laminating a plurality of boards so that the fiber directions of the boards are orthogonal, and is called an orthogonal laminated board.
Furthermore, laminated wood is a wood made by laminating a plurality of boards so that the fiber directions of the boards are parallel.
In addition, as stipulated in Article 1 of the Japanese Agricultural Standards for Laminated Veneer Materials in Ministry of Agriculture, Forestry and Fisheries Notification No. 2773, LVL is defined as "a veneer cut by a rotary lace, slicer, or other cutting machine, mainly in the direction of its fibers. When using general materials and veneers with orthogonal fiber directions, which are laminated and bonded in parallel to each other, the total thickness of the orthogonal veneers is less than 30% of the thickness of the product, and ``General materials in which the composition ratio of the number of veneers is 30% or less.''

As the steel column 3, for example, steel materials such as shaped steel and steel pipes are used.
As the shaped steel, for example, an H-shaped steel having an H-shaped cross section is used.
As the steel pipe, for example, a rectangular steel pipe having a hollow rectangular cross section is used.

When H-shaped steel is used as the steel column 3, as shown in FIG. It is formed by the grooves 2, 2 into which the fitting target flange portions 34, 34 of a predetermined range extending in the material axis direction of each half of each flange 31, 31 located on one side of the surface 33 are fitted. .
Then, the fitting target flange portions 34, 34 of the H-shaped steel forming the steel column 3 are fitted into the grooves 2, 2 of the wooden wall material 1, and the one surface 33 of the web 32 and the After the two plate surfaces 11 are set in contact with each other, the wooden wall material 1 and the steel column 3 are joined using the joining means 4 (see FIG. 5).
With this configuration, the effect of improving the restraint force on the wooden wall material 1 by the H-shaped steel forming the steel column 3 can be enhanced.

When a square steel pipe is used as the steel column 3, as shown in FIG. A fitting target outer circumferential surface portion 35 of a predetermined range extending in the material axis direction of the outer circumferential surface is formed in the groove 2 to be fitted.
The outer circumferential surface portion 35 to be fitted is, for example, a surface portion consisting of one side surface among the four side surfaces of the square steel pipe and side half regions along the circumferential direction of two side surfaces adjacent to the one side surface. Consists of.
After the fitting target outer peripheral surface portion 35 of the square steel pipe constituting the steel column 3 is set to be fitted into the groove 2 of the wooden wall material 1, the connecting means 4 is used to connect the wooden wall material 1. The steel column 3 is joined (see FIG. 5).
With this configuration, the effect of improving the restraining force on the wooden wall material 1 by the square steel pipe that constitutes the steel column 3 can be enhanced.

In addition, when H-shaped steel is used as the steel column 3, the groove 2 formed in the wooden wall material 1 is a portion consisting of the fitting target flange portions 34, 34 and one surface 33 of the web 32, that is, the H section. The groove 2 may be formed into which a predetermined range of fitting target outer circumferential surface portion extending in the axial direction of the half outer circumferential surface corresponding to a half circumference of the outer circumferential surface of the shaped steel is fitted.
In this case, after the outer circumferential surface portion of the H-shaped steel that constitutes the steel column 3 is set to be fitted into the groove 2 of the wooden wall material 1, the connecting means 4 is used to connect the outer circumferential surface of the H-shaped steel to the wooden wall material 1. Since the steel column 3 is joined, the effect of improving the restraining force on the wooden wall material 1 by the H-shaped steel forming the steel column 3 can be enhanced.

That is, the groove 2 formed in the wooden wall material 1 is fitted with a predetermined range of the outer circumferential surface to be fitted that extends in the axial direction of the half outer circumferential surface corresponding to a half circumference of the outer circumferential surface of the steel column 3. It is preferable that the grooves 2 are fitted together.

The joining means 4 that joins the wooden wall material 1 and the steel column 3 is a rod-shaped joining member 40 such as a screw, bolt, or drift pin that penetrates the wooden wall material 1 and the steel column 3 and joins them together, or a wooden An adhesive for bonding the wall material 1 and the steel column 3, or a combination of the above-mentioned rod-shaped joining member and adhesive may be used.

For example, if the steel column 3 is an H-beam and screws are used as the rod-shaped connecting member 40 of the connection means 4, screw the screws into the wooden wall material 1 from the side of the steel column 3 as shown in FIG. 5(a). Or, as shown in FIG. 5(b), screw the screws into the steel column 3 from the wooden wall material 1 side, or screw the screws from both the steel column 3 side and the wooden wall material 1 side, What is necessary is to join the wooden wall material 1 and the steel column 3.

In the joint structure between the wooden wall material and the steel column according to the first embodiment, as shown in FIGS. A joint structure is provided in which the fireproof structure of the steel column 3 is provided by the outer fireproof treatment section 8, which is configured by providing a fireproof material so as to cover the surface 3f of the steel column 3.
In the present invention, the surface 3f of the steel column 3 located on the outside of one plate surface 11 of the wooden wall material 1 refers to the surface 3f of the steel column 3 located on the outside of one plate surface 11 of the wooden wall material 1. This refers to the surface that is not in contact with the wooden wall material 1.

In addition, as shown in FIG. 6(a), when H-shaped steel is used as the steel column 3, the surface 3f of the steel column 3 is the fitting flange part of the H-shaped steel that is in contact with the wooden wall material 1. 34, 34 and one surface of the web 32 other than the surface 33, and a refractory material is provided so as to cover the surfaces, thereby forming the outer fireproofing section 8.
In addition, as shown in FIG. 7(a), when a square steel pipe is used as the steel column 3, the surface 3f of the steel column 3 has a surface other than the outer circumferential surface portion 35 to be fitted that is in contact with the wooden wall material 1. This is the surface, and a refractory material is provided so as to cover the surface, thereby forming the outer fireproofing section 8 .

As the fireproof material forming the outer fireproofing section 8, for example, a fireproof material such as rock wool or a fireproof board was used.

According to the joint structure of wooden wall materials and steel columns according to the first embodiment, in a state where the grooves 2A, 2B of the wooden wall materials 1 and a part of the outer peripheral surface of the steel columns 3A, 3B are fitted, Since the wall material 1 and the steel columns 3A and 3B are simply joined using the joining means 4, the joining work becomes easy and a joined structure with excellent workability can be provided.

Further, according to the joint structure between the wooden wall material and the steel column according to the first embodiment, a part of the outer peripheral surface of the steel column 3A, 3B is fitted into the grooves 2A, 2B of the wooden wall material 1. Therefore, it is possible to construct a wooden wall such as a load-bearing wall (earthquake-resistant wall) in which the restraint force against the wooden wall material 1 is improved by the steel columns 3.
In particular, a groove 2 formed in the wooden wall material 1 is fitted into a predetermined range of the outer circumferential surface to be fitted, which extends in the axial direction of the half outer circumferential surface corresponding to a half circumference of the outer circumferential surface of the steel column 3. By making the grooves 2 match, the effect of improving the restraining force of the steel column 3 on the wooden wall material 1 can be enhanced.

Further, according to the joint structure between the wooden wall material and the steel column according to the first embodiment, the fireproof material is provided so as to cover the surface 3f of the steel column 3 located outside the plate surface 11 of the wooden wall material 1. Since the fireproof structure of the steel column 3 is provided by the outer fireproof treatment section 8 configured as shown in FIG.
That is, according to the joint structure of the wooden wall material and the steel column according to Embodiment 1, the wooden wall material 1 and the steel column 3 have excellent workability and have a fireproof structure that can ensure the fireproof performance of the steel column 3. It can provide a bonding structure with

Embodiment 2
As described in Embodiment 1, the wooden wall material 1 is opened in a state where the groove 2 formed to open on the plate surface 11 and a part of the outer circumferential surface of the steel column 3 are fitted together. In the joint structure of the wooden wall material 1 and the steel column 3, in which the wooden wall material 1 and the steel column 3 are joined by the joining means 4, as shown in FIG. 6(b) and FIG. The joint structure includes a fireproof structure 8A composed of an inner fireproof treatment section 81.
The outer fireproofing section 8 is configured by providing a fireproof material so as to cover the surface 3f of the steel column 3 located outside the plate surface 11 of the wooden wall material 1.
The inner fireproofing section 81 is provided and configured to extend from both circumferential ends of the steel column 3 in the outer fireproofing section 8 to the inside of the wooden wall material 1 .
In addition, the inner fireproofing part 81 extends from both end positions in the circumferential direction of the steel column 3 located outside the plate surface 11 of the wooden wall material 1 along the surface 3f of the steel column 3. The groove 21 is formed to extend inward from the wooden member 1, and a refractory material is provided to fill the groove 21.
Further, the steel column 3 side of the groove 21 is formed so that the surface of the steel column 3 is exposed, and the refractory material provided to be filled in the groove 21 is in contact with the surface of the steel column 3. Preferably, the configuration is configured.
That is, the refractory material of the outer refractory treated section 8 and the refractory material of the inner refractory treated section 81 are provided so as to be continuous.

In addition, as shown in FIG. 6(b), when H-shaped steel is used as the steel column 3, the surface 3f of the steel column 3 is the fitting flange part of the H-shaped steel that is in contact with the wooden wall material 1. 34, 34 and one surface of the web 32 other than the surface 33, and a refractory material is provided so as to cover the surfaces, thereby forming the outer fireproofing section 8.
Also, the side close to one plate surface 11 of the wooden wall material 1 located on the surface (the surface on the side not connected to the web 32) of the fitting target flange portions 34, 34 of the H-beam steel (close to the web 32). By forming a groove 21 on the side) and filling the groove 21 with fireproof material, the plate of the wooden wall material 1 on the surface side of the fitting target flange portions 34, 34 of the H-shaped steel. An inner refractory treated portion 81 is constructed in which the side closer to the surface 11 is covered with a refractory material.
In addition, as shown in FIG. 7(b), when a square steel pipe is used as the steel column 3, the surface 3f of the steel column 3 has a surface other than the outer circumferential surface portion 35 to be fitted that is in contact with the wooden wall material 1. This is the surface, and a refractory material is provided so as to cover the surface, thereby forming the outer fireproofing section 8.
Further, a groove 21 is formed on the side closer to the plate surface 11 of the wooden wall material 1 located on the surface side of the outer peripheral surface portion 35 to be fitted to the square steel pipe, and the groove 21 is filled with a fireproof material. By providing this, an inner fireproofing part 81 is formed in which the side near the plate surface 11 of the wooden wall material 1 on the surface side of the fitting target outer circumferential surface portion 35 of the square steel pipe is covered with a fireproofing material.

As the refractory material forming the outer refractory treated part 8 and the inner refractory treated part 81, for example, a refractory material such as rock wool or a fireproof board was used.

According to the joint structure of the wooden wall material and the steel frame column according to the second embodiment, since the fireproof structure 8A composed of the outer fireproofing part 8 and the inner fireproofing part 81 is provided, the steel frame is The fire resistance of the column 3 can be ensured, and the function of the inner fireproof treatment section 81 prevents the steel column 3 from spreading fire due to burning through the plate surface 11 side of the wooden wall material 1 near both ends in the circumferential direction of the steel column 3. (The plate surface 11 side of the wooden wall material 1 near both ends of the steel column 3 in the circumferential direction burns down, and the steel column 3 spreads through the burnt part). 3, it is possible to realize a joint structure between the wooden wall material 1 and the steel column 3, which has excellent fire resistance performance.

Embodiment 3
As described in Embodiment 1, the wooden wall material 1 is opened in a state where the groove 2 formed to open on the plate surface 11 and a part of the outer circumferential surface of the steel column 3 are fitted together. 1 and the steel frame column 3 are joined by the joining means 4, as shown in FIG. 6(c) and FIG. The joint structure includes a fireproof structure 8B composed of a fireproof structure 8B and an outside fireproof treatment part 80.
The boundary vicinity fireproofing section 82 is configured to provide thermally expandable fireproofing so as to contact the steel column 3 and the wooden wall material 1 near both ends of the surface 3f of the steel column 3 located outside the plate surface 11 of the wooden wall material 1. It is constructed by providing materials.
More specifically, the near-boundary fireproofing section 82 is located outside the board surface 11 of the wooden wall material 1 near both ends of the surface 3f of the steel column 3, which is located outside the board surface 11 of the wooden wall material 1. A thermally expandable fireproof material is provided so as to be in contact with the surface 3f of the steel column 3 located inside the plate surface 11 of the wooden wall material 1.
In the outer fireproofing section 80, a fireproofing material is provided so as to cover the surface 3f of the steel column 3 located outside the plate surface 11 of the wooden wall material 1 and the surface of the thermally expandable fireproofing material of the fireproofing section 82 near the boundary. composed of

In addition, as shown in FIG. 6(c), when H-beam steel is used as the steel column 3, the surface (the surface on the side not connected to the web 32) of the flange portions 34, 34 to be fitted to the H-beam steel A groove 22 is formed on one side of the wooden wall material 1 located close to the plate surface 11 (the side close to the web 32), and a thermally expandable fireproof material is inserted into the groove 22. The fireproof material is provided so as to be in contact with the surface 3f of the flange located outside the board surface 11 of the wooden wall material 1 and the surface of the flange located inside the board surface 11 of the wooden wall material 1. As a result, the near-boundary fireproofing section 82 is configured.
Then, the fitting target flange portions 34, 34 of the H-shaped steel that are in contact with the wooden wall material 1 and the surface other than one surface 33 of the web 32 and the outer side of the plate surface 11 of the wooden wall material 1 are located. A refractory material is provided so as to cover the surface of the thermally expandable refractory material of the fireproof treated part 82 near the boundary, thereby forming the outer fireproof treated part 80.
Further, as shown in FIG. 7(c), when a square steel pipe is used as the steel column 3, the plate surface 11 of the wooden wall material 1 located on the surface side of the outer peripheral surface portion 35 to be fitted to the square steel pipe A square steel pipe in which a groove 22 is formed on the side closer to the groove 22, a thermally expandable fireproofing material is inserted into the groove 22, and the thermally expanding fireproofing material is located outside the plate surface 11 of the wooden wall material 1. By providing contact between the surface 3f of the square steel pipe and the surface of the square steel pipe located inside the plate surface 11 of the wooden wall material 1, the fireproofing section 82 near the boundary is configured.
Then, the heat of the surface of the square steel pipe other than the fitting target outer circumferential surface portion 35 that is in contact with the wooden wall material 1 and the fire-resistant treated portion 82 near the boundary located outside the plate surface 11 of the wooden wall material 1 A refractory material is provided so as to cover the surface of the expandable refractory material to constitute the outer fireproofing section 80.

As the thermally expandable fireproofing material forming the boundary vicinity fireproofing section 82, a thermally expandable fireproofing material such as a thermally expandable fireproof sheet or a thermally expandable fireproof paint is used, for example.
As the fireproof material forming the outer fireproof treatment section 80, for example, a fireproof material such as rock wool or a fireproof board may be used.

According to the fireproofing section 8B in the joint structure between the wooden wall material 1 and the steel column 3 according to Embodiment 3, the fireproofing section 8B includes the border vicinity fireproofing section 82 and the outside fireproofing section 80, so that it can be easily used in the event of a fire. Due to the expansion function of the thermally expandable fireproofing material of the fireproofing section 82 near the boundary, the steel column 3 is caused to burn through the plate surface 11 side of the wooden wall material 1 in the vicinity of both circumferential end positions of the steel column 3, causing the steel column 3 to spread fire. (The plate surface 11 side of the wooden wall material 1 in the vicinity of both ends in the circumferential direction of the steel column 3 burns down, and the steel column 3 spreads fire through the burnt down part). Since the fireproofing performance of the steel column 3 can be ensured by the outer fireproofing part 8, it is possible to realize a joint structure between the wooden wall material 1 and the steel column 3, which has excellent fireproofing performance of the steel column 3.

Embodiment 4
As described in Embodiment 1, the wooden wall material 1 is opened in a state where the groove 2 formed to open on the plate surface 11 and a part of the outer circumferential surface of the steel column 3 are fitted together. Although not shown in the joint structure of the wooden wall material 1 and the steel column 3, in which the wooden wall material 1 and the steel column 3 are joined by the joining means 4, the fireproof structure is composed of a thermally expandable fireproofing section and an outside fireproofing section. It is also possible to have a joining structure equipped with the following.
In this case, the thermally expandable fireproofing part is located between the groove 2 formed to open in the plate surface 11 of the wooden wall material 1 and a part of the outer peripheral surface of the steel column 3 fitted into the groove 2. A thermally expandable fireproofing material (thermally expandable fireproofing material such as the above-mentioned thermally expandable fireproof sheet or thermally expandable fireproof paint) is provided so as to be in contact with the wooden wall material 1 and the steel column 3. The configuration shall be as follows.
In addition, in the outside fireproofing section, a fireproofing material (fireproofing material such as the above-mentioned rock wool or fireproofing board) is provided so as to cover the surface 3f of the steel column 3 located outside the board surface 11 of the wooden wall material 1. The structure is as follows.

According to the fireproof structure of the joint structure between the wooden wall material 1 and the steel column 3 according to Embodiment 4, since the structure includes a thermally expandable fireproof treated part and an outer fireproof treated part, thermal expansion is prevented in the event of a fire. Due to the ability of the thermally expandable fireproofing material in the fireproofing treatment section to expand, the steel column 3 may spread fire due to burning through the surface side of the groove 2 of the wooden wall material 1 (the surface side of the groove 2 of the wooden wall material 1 A steel frame column that can prevent the steel frame column 3 from burning down and spreading fire through the burnt-down part, and is located outside the plate surface 11 of the wooden wall material 1 by the outer fireproofing section. Since the fire resistance of 3 can be ensured, it is possible to realize a joint structure between the wooden wall material 1 and the steel column 3, which has excellent fire resistance performance of the steel column 3.

Further, according to Embodiments 3 and 4, the fireproof sheet or fireproof paint, which is a thermally expandable fireproofing material, is thin (for example, about 3 mm thick) to achieve the desired fireproofing. Since the performance can be obtained, the fireproof structure can be made smaller.

Embodiment 5
The joint structure between the wooden wall material and the steel column according to the fifth embodiment is such that it comes into contact with the steel column 3 in the joint structure provided with each of the fireproof structures 8, 8A, 8B, etc. shown in the first to fourth embodiments. The structure includes a temperature rise suppressing section that suppresses the temperature rise of the steel column 3 in the event of a fire.
For example, as shown in FIGS. 6(d) and 7(d), a structure including a fireproof structure 8C including the outside fireproofing section 8 of Embodiment 1 and a temperature rise suppressing section 83 was adopted.

The temperature rise suppressing section 83 is configured by, for example, providing a gypsum board as a temperature rise suppressing means so as to contact a part or all of the surface of the steel column 3.

According to the joint structure between the wooden wall material and the steel column according to the fifth embodiment, the following effects can be obtained by providing the temperature rise suppressing section 83.
The steel columns 3 that have been fireproofed using the fireproof structures 8, 8A, 8B, etc. shown in Embodiments 1 to 4 have fireproof performance at temperatures of 450°C or lower, but the wooden wall material 1 ignites at 260°C. Therefore, when the temperature of the steel column 3 reaches 260° C., the portion of the wooden wall material 1 that comes into contact with the steel column 3 burns.
However, in the fifth embodiment, since the temperature rise suppressing section 83 is provided with a gypsum board as a temperature rise suppressing means so as to be in contact with the steel column 3, the temperature of the gypsum board exceeds 100 degrees Celsius in the event of a fire. The crystal water in the gypsum board undergoes a chemical change to water.
That is, when the temperature of the steel column 3 in contact with the gypsum board exceeds 100° C., the crystal water in the gypsum board turns into water, and the temperature rise of the steel column 3 is suppressed by the latent heat of vaporization effect.
Therefore, since the time it takes for the temperature of the steel column 3 to reach 260°C can be extended, the time it takes for the part of the wooden wall material 1 that has come into contact with the steel column 3 to burn can be lengthened, and the fireproof specification can be maintained for a long time. It becomes possible to realize it.

Embodiment 6
As a joining means for joining the wooden wall material and the steel column, as shown in FIGS. 8 and 9, there is an upper restraint that is connected to the steel column 3 and pinches the wooden wall material 1 from above and below to restrain the wooden wall material 1. The member 5A and the lower restraint member 5B, the rod-shaped fixing member 40 that penetrates the upper restraint member 5A and the upper end of the wooden wall material 1 and fixes both, the lower restraint member 5B and the lower end of the wooden wall material 1. A rod-shaped fixing member 40 that penetrates through and fixes both, a rod-shaped fixing member 40A that fixes the upper restraining member 5A and the steel column 3, and a rod-shaped fixing member 40A that fixes the lower restraining member 5B and the steel column 3, You may use the joining means 5 equipped with. Note that, for example, a high-strength bolt 41 or the like may be used as the rod-shaped fixing member 40A.

The upper restraint member 5A and the lower restraint member 5B include a left side member 51, a right side member 52, and a center member 53.
The left side member 51 and the right side member 52 are provided so as to extend from a wall side mounting plate 55 such as a flat bar attached to either the left or right side of the steel column 3, and one end edge of the wall side mounting plate 55. so as to extend across the column side mounting plate 56 having a plate surface perpendicular to the plate surface of the column side mounting plate 56, the side edge of the wall material side mounting plate 55, and the side edge of the column side mounting plate 56. A reinforcing plate 57 is provided.
For example, when the steel column 3 is an H-beam, the central member 53 has a base plate 58a having a plate surface that contacts the upper end face 12 or the lower end face 13 of the wooden wall material 1, and the center member 53 has the same shape as the base plate 58a from both left and right edges of the base plate 58a. Side plates 59a and 59b have plate surfaces that extend in the direction and contact the inner surfaces of H-shaped steel flanges 31 and 31 that face each other, and the extended ends of the side plates 59a and 59b are connected to each other to connect with the plate surface of the substrate 58a. A facing plate 58b having parallel facing plate surfaces is provided.
That is, the central member 53 is constituted by a rectangular cylinder or a rectangular ring having a through hollow space with a rectangular cross section surrounded by the substrate 58a, the side plates 59a and 59b, and the opposing plate 58b.

The outer plate surface of the base plate 58a and the upper end surface 12 or lower end surface 13 of the wooden wall material 1 are brought into contact with each other, and the outer plate surfaces of the side plates 59a, 59b and the flanges 31, 31 of H-beam steel forming the steel column 3. The central member 53 is installed so as to be in contact with the inner surface of the central member 53.
Then, the outer plate surface of the wall material side mounting plate 55 and the upper end surface 12 or the lower end surface 13 of the wooden wall material 1 are brought into contact, and the outer plate surface of the column side mounting plate 56 and the flange 31 of the H-beam steel are brought into contact with each other. The left side member 51 and the right side member 52 are installed so that they are in contact with the outer plate surfaces.
Then, by passing the threaded shaft portion of the high-strength bolt 41 through the bolt insertion holes 22, 21, and 23 formed in the side plate 59a or the side plate 59b, the flange 31, and the column-side mounting plate 56, and tightening the nut 42, the left side The member 51, the right side member 52, and the center member 53 are fixed to the steel column 3.
Furthermore, by screwing a screw or the like as a rod-shaped fixing member 40 into the upper end surface 12 side or the lower end surface 13 side of the wooden wall material 1 through the guide holes 24 formed in the left side member 51 and the right side member 52, the left side member 51 and the right side member 52 are fixed. A member 52 is fixed to the wooden board 1.

According to the sixth embodiment, the wooden wall material 1 and the steel column 3 are joined using the joining means 5 with the groove 2 of the wooden wall material 1 fitted into a part of the outer peripheral surface of the steel column 3. Therefore, the joining work becomes easy and a joined structure with excellent workability can be provided.
Further, using the joining means 5 made up of the upper restraining member 5A, the lower restraining member 5B, the rod-shaped fixing members 40, 40A, and the rod-shaped fixing member 40, the upper end surface 12 side and the lower end surface 13 side of the wooden wall material 1 are vertically connected. Since the wooden wall material 1 and the steel column 3 are joined together in a restrained state, the restraining force on the wooden wall material 1 is improved by the steel column 3, the upper restraining member 5A, and the lower restraining member 5B. It is possible to construct walls such as load-bearing walls (earthquake-resistant walls).

Note that the joining means 5 for joining the wooden wall material 1 and the steel column 3 includes an upper restraining member 5A and a lower restraining member 5A that are connected to the steel column 3 and sandwich the wooden wall material 1 from above and below to restrain the wooden wall material 1. The restraining member 5B, the rod-shaped joining member 40 that penetrates through the upper restraining member 5A and the upper end of the wooden wall material 1 and joining them together, and the adhesive that adheres the upper restraining member 5A and the upper end of the wooden wall material 1. At least one of them, a rod-shaped joining member 40 that penetrates the lower restraining member 5B and the lower end of the wooden wall material 1 and joins them together, and the lower restraining member 5B and the lower end of the wooden wall material 1 are bonded together. Any material may be used as long as it is composed of at least one of the adhesives.
That is, the means for joining the upper restraining member 5A and the lower restraining member 5B to the wooden wall material 1 is a rod-shaped joining member 40 such as a screw, bolt, or drift pin, or an adhesive, or the rod-shaped joining member 40 and the like. It may be possible to use a method in combination with an adhesive.

Embodiment 7
As shown in FIG. 10(a), both the joining means 4 described in the first embodiment and the joining means 5 described in the second embodiment may be used.

Embodiment 8
As shown in FIG. 10(b), a joining means is used that combines the joining means 4 described in the first embodiment and the joining means using the upper restraining member 5A or the lower restraining member 5B described in the second embodiment. Good too.

According to Embodiments 7 and 8, the effect of improving the restraining force on the wooden wall material 1 can be further enhanced.

Embodiment 9
In Embodiment 6, the upper restraint member 5A and the lower restraint member 5B are configured to include the left side member 51, the right side member 52, and the center member 53, but the upper restraint member and the lower restraint member are For example, the center member 53 may not be provided, but the left side member 51 and the right side member 52 may be used.

Embodiment 10
Further, the upper restraint member and the lower restraint member are mounting plates such as flat bars that have a plate surface that comes into contact with the upper end surface 12 or lower end surface 13 of the wooden wall material 1 and are fixed to the steel column 3 by welding or the like. It may be configured by
In this case, the mounting plate is arranged, for example, from one edge to the flange portions 34, 34 to be fitted of the H-shaped steel constituting the steel column 3 or to the outer peripheral surface to be fitted of the square steel pipe constituting the steel column 3. A slit (not shown) for inserting the portion 35 is used. Then, while the plate surface of the mounting plate is in contact with the upper end surface 12 or the lower end surface 13 of the wooden wall material 1, insert the fitting target flange portions 34, 34 of the steel column 3 and the fitting target outer periphery into the slits not shown above. After inserting the surface portion 35, the periphery of the slit (not shown) in the mounting plate and the steel column 3 are fixed by welding or the like. Thereafter, the mounting plate is attached to the wooden wall material 1 by screwing a screw or the like as the rod-shaped fixing member 40 into the upper end surface 12 side or the lower end surface 13 side of the wooden wall material 1 through a guide hole (not shown) formed in the mounting plate. If fixed, it is possible to realize a joint structure in which the wooden wall material 1 is restrained by upper and lower mounting plates (flat bars) from the upper and lower sides of the wooden board material 1.

Embodiment 11
As shown in FIGS. 11 and 12, the wooden wall material 1 and the steel column 3 are joined by a joining means with the plate surface 11 of the wooden wall material 1 and a part of the outer peripheral surface of the steel column 3 in contact with each other. As shown in FIGS. 13 and 14, each of the fireproof structures 8, 8A, 8B, 8C, etc. described in Embodiments 1 to 5 is used. It is also possible to have a joint structure equipped with the following.

The joint structure between a wooden wall material and a steel column shown in FIG. It has a structure in which a wooden wall material 1 and a steel column 3 are joined using angle fittings 5X.
For example, the plate surface of one flat plate portion 5a constituting the L-shaped vertical piece of the angle fitting 5X and the surface of the steel column 3 (for example, the surface of the flange in the case of the H-beam steel column 3 shown in FIG. 11). While in contact, one flat plate part 5a is fixed to the steel column 3 by welding or as a rod-shaped joint member with screws, etc., and the plate surface of the other flat plate part 5b constituting the L-shaped horizontal piece of the angle fitting 5X. By fixing the wooden wall material 1 to the other flat plate part 5b with screws or the like as the rod-shaped connecting member 40 while the wooden wall material 1 is in contact with one plate surface 11 of the wooden wall material 1, the wooden wall material 1 and the steel column are connected. 3 was joined to form a joint structure.
That is, in a state where the plate surface 11 of the wooden wall material 1 and a part of the outer peripheral surface of the steel column 3 are in contact with each other, the wooden wall is attached using a joining means such as an angle fitting 5X as a joining fitting, welding, or a rod-shaped joining member. A joint structure was adopted in which the material 1 and the steel column 3 were joined.

The joint structure between the wooden wall material 1 and the steel column shown in FIG. This is a structure in which a wooden wall material 1 and a steel column 3 are joined using a mounting plate (flat bar) 55A with a connecting plate 57A.
In addition, in the case of H-shaped steel, a part of the outer peripheral surface of the steel column 3 is one end surface 3a of each flange, as shown in FIG. 13, for example, and in the case of a square steel pipe, it is, for example, as shown in FIG. This is one side 3a.
For example, the upper side of the wooden wall material 1 is connected to the plate surface of the reinforcing connecting plate 57A connected to the mounting plate 55A by welding or the like, and the surface of the steel column 3 (for example, in the case of the H-beam steel column 3 shown in FIG. 12, the flange The reinforcing connecting plate 57A is fixed to the steel column 3 by welding or with screws serving as a rod-shaped connecting member 40 while in contact with the surface of the wooden wall material. 1 on the upper end surface 12 side.
Similarly, the lower side of the wooden wall material 1 is welded or used as a rod-shaped joint member with the plate surface of the reinforcing connecting plate 57A connected to the mounting plate 55A by welding etc. and the surface of the steel column 3 in contact with each other. The reinforcing connecting plate 57A is fixed to the steel column 3 with screws, etc., and the mounting plate 55A is fixed to the lower end surface 13 side of the wooden wall material 1 with screws etc. as the rod-shaped connecting member 40.
As described above, a joint structure was created in which the upper and lower sides of the wooden wall material 1 were joined to the steel column 3 using the mounting plates 55A with the reinforcing connecting plates 57A, respectively.
That is, in a state where the plate surface 11 of the wooden wall material 1 and a part of the outer peripheral surface of the steel column 3 are in contact with each other, a mounting plate (flat bar) 55A with a reinforcing connecting plate 57A as a joining fitting, a welding or a rod-shaped joining member A joint structure was created in which the wooden wall material 1 and the steel column 3 were joined using a joining means such as the following.

Then, as shown in FIGS. 11 and 12, in a state where the plate surface 11 of the wooden wall material 1 and a part of the outer peripheral surface of the steel column 3 are in contact with each other, the wooden wall material 1 and the steel column 3 are connected by the joining means. In the joint structure between the joined wooden wall material 1 and the steel column 3, as shown in FIGS. The joint structure was designed as follows.
As shown in FIG. 13(a), when H-beam steel is used as the steel column 3, the surface other than one end surface 3a of each flange that is in contact with the plate surface 11 of the wooden wall material 1 is A refractory material is provided so as to cover the outer refractory treatment part 8.
Further, as shown in FIG. 14(a), when a square steel pipe is used as the steel column 3, the surface other than one side 3a of the square steel pipe, which is the surface in contact with the wooden wall material 1, is covered. A refractory material is provided to constitute the outer refractory treatment section 8 .

In addition, in a state where the plate surface 11 of the wooden wall material 1 and a part of the outer peripheral surface of the steel column 3 are in contact with each other, the wooden wall material 1 and the steel column 3 are connected to each other by the joining means. In the joint structure with the pillar 3, as shown in FIGS. 13(b) and 14(b), the joint structure was provided with a fireproof structure 8A similar to that of the second embodiment.
As shown in FIG. 13(b), when H-shaped steel is used as the steel column 3, the outer fireproofing section 8 is formed on one end surface of each flange, which is the surface in contact with the plate surface 11 of the wooden wall material 1. A refractory material is provided to cover surfaces other than 3a and 3a.
In addition, the inner fireproofing section 81 extends from the outside of one end surface 3a, 3a of each flange, which is the circumferentially both ends of the H section steel, in the outer fireproofing section 8 that covers the surface of the H section steel, to the inside of the wooden wall material 1. By forming grooves 21 and filling the grooves 21 with fireproof material, the fireproof material extends from both circumferential ends of the steel column 3 in the outer fireproofing section 8 to the inside of the wooden wall material 1. Consisted of.
In addition, as shown in FIG. 14(b), when a square steel pipe is used as the steel column 3, the outer fireproofing section 8 has one side surface 3a of the square steel pipe that is the surface in contact with the wooden wall material 1. A refractory material is provided to cover all other surfaces.
In addition, the inner fireproofing section 81 extends the wooden wall material 1 from the outside of both ends in the circumferential direction of the square steel pipe (both ends in the width direction of one side surface 3a of the square steel pipe) in the outside fireproofing section 8 that covers the surface of the square steel pipe. By forming a groove 21 that extends to the inside and filling the groove 21 with fireproof material, the groove 21 extends from both circumferential ends of the steel column 3 in the outer fireproofing section 8 to the inside of the wooden wall material 1. Constructed of fireproof material.

In addition, in a state where the plate surface 11 of the wooden wall material 1 and a part of the outer peripheral surface of the steel column 3 are in contact with each other, the wooden wall material 1 and the steel column 3 are connected to each other by the joining means. In the joint structure with the pillar 3, as shown in FIGS. 13(c) and 14(c), the joint structure was provided with a fireproof structure 8B similar to that of the third embodiment.
As shown in FIG. 13(c), when H-shaped steel is used as the steel column 3, the fireproofing section 82 near the boundary is located between one end surface 3a of each flange and the plate surface 11 of the wooden wall material 1. The structure is such that the thermally expandable fireproof material is provided on the steel column 3 and the wooden wall material 1 near both ends of the surface of the steel column 3 located outside the plate surface 11 of the wooden wall material 1. The structure includes a thermally expandable fireproof material.
In the outer fireproofing section 80, a fireproof material is provided so as to cover the surfaces other than the one end surfaces 3a, 3a of each flange of the H-shaped steel and the surface of the thermally expandable fireproofing material of the fireproofing section 82 near the boundary. In addition, as shown in FIG. 14(c), when a square steel pipe is used as the steel column 3, the fireproofing section 82 near the boundary is formed between both widthwise ends of one side surface 3a of the square steel pipe and the wooden A structure in which a thermally expandable fireproof material is provided between the plate surface 11 of the wall material 1, that is, the steel column 3 is located in the vicinity of both ends of the surface of the steel column 3 located outside the plate surface 11 of the wooden wall material 1. In this structure, a thermally expandable fireproof material is provided so as to be in contact with the wooden wall material 1.
The outer refractory treatment section 80 has a configuration in which a refractory material is provided so as to cover the surface other than the one side surface 3a of the square steel tube and the surface of the thermally expandable refractory material of the boundary vicinity refractory treatment section 82.

In addition, in a state where the plate surface 11 of the wooden wall material 1 and a part of the outer peripheral surface of the steel column 3 are in contact with each other, the wooden wall material 1 and the steel column 3 are connected to each other by the joining means. In the joint structure with the pillar 3, a joint structure having a fireproof structure including a thermally expandable fireproof treated part and an outer fireproof treated part similar to Embodiment 4 was used.
When H-shaped steel is used as the steel column 3, the fireproof structure may be the same as that shown in FIG. 13(c).
In addition, when a square steel pipe is used as the steel frame column 3, the thermally expandable fireproof treated part in the fireproof structure includes the plate surface 11 of the wooden wall material 1 and one side surface 3a that is a part of the outer peripheral surface of the square steel pipe. A thermally expandable fireproof material may be provided so as to be in contact with the wooden wall material 1 and one side surface 3a of the square steel pipe between them.

In addition, in a state where the plate surface 11 of the wooden wall material 1 and a part of the outer peripheral surface of the steel column 3 are in contact with each other, the wooden wall material 1 and the steel column 3 are connected to each other by the joining means. In the joint structure with the pillar 3, as shown in FIGS. 13(d) and 14(d), the joint structure was provided with a fireproof structure 8C similar to that of the fifth embodiment.
As shown in FIG. 13(d), when H-beam steel is used as the steel column 3, for example, the temperature rise suppressing portion 83 is located at each flange of the wooden wall material 1 on the side closer to the plate surface 11. A gypsum board was installed on the inner surface as a means of suppressing temperature rise.
As shown in FIG. 14(d), when a square steel pipe is used as the steel column 3, for example, the temperature rise suppressing part 83 includes a gypsum board as a temperature rise suppressing means on the inner surface of one side 3a of the square steel pipe. The configuration is as follows.

According to Embodiment 11, the wooden wall material 1 and the steel column 3 are joined by the joining means in a state where the plate surface 11 of the wooden wall material 1 and a part of the outer peripheral surface of the steel column 3 are in contact with each other. In the joint structure between the wall material 1 and the steel column 3, the same effects as in Embodiments 1 to 5 can be obtained.

Embodiment 12
As shown in FIGS. 15 and 16, the wooden wall material 1 and the steel column 3 are joined by the joining means in a state where the end surface 11e of the wooden wall material 1 and a part of the outer peripheral surface of the steel column 3 are in contact with each other. It is a joint structure of a wooden wall material 1 and a steel column 3, and as shown in FIGS. A joint structure may also be used.
In addition, when H-beam steel is used as the steel frame column 3, the joint structure is such that the end surface 11e of the wooden wall material 1 is in contact with and joined to the surface of each flange.
Further, when a square steel pipe is used as the steel column 3, a joint structure is created in which the end surfaces 11e of the wooden wall material 1 are in contact with and joined to a pair of mutually opposing side surfaces (surfaces) of the square steel pipe.

The joint structure between the wooden wall material 1 and the steel column 3 shown in FIG. This is a structure in which a wooden wall material 1 and a steel column 3 are joined using an angle fitting 5Y.
For example, a state in which the plate surface of one flat plate portion 5a constituting the L-shaped vertical piece of the angle fitting 5Y is in contact with the surface of the steel column 3 (for example, in the case of the steel column 3 made of H-beam steel, the surface of the flange). At the same time, the one flat plate part 5a is fixed to the steel column 3 by welding or screws as a rod-shaped connecting member, and the end surface 11e of the wooden wall material 1 is brought into contact with a part of the outer peripheral surface of the steel column 3, and With the plate surface of the other flat plate part 5b constituting the L-shaped horizontal piece of the angle fitting 5Y and the plate surface of the wooden wall material 1 in contact with each other, use a screw or the like as a rod-shaped joining member 40 to attach the wooden wall material 1. By fixing it to the other flat plate part 5b, a joint structure was created in which the wooden wall material 1 and the steel column 3 were joined.
That is, in a state where the end surface 11e of the wooden wall material 1 and a part of the outer peripheral surface of the steel column 3 are in contact with each other, the wooden wall material 1 and a steel column 3 are connected to each other.

The joint structure between the wooden wall material and the steel column shown in FIG. This is a structure in which a wooden wall material 1 and a steel column 3 are joined using a mounting plate (flat bar) 55B with a plate 57B.
For example, the upper side of the wooden wall material 1 is connected to the end face of the reinforcing connecting plate 57B connected to the mounting plate 55B by welding or the like, and the surface of the steel column 3 (for example, in the case of the H-beam steel column 3 shown in FIG. The reinforcing connecting plate 57B is fixed to the steel column 3 by welding or the like while in contact with the surface), and the mounting plate 55B is fixed to the upper end surface 12 side of the wooden wall material 1 with screws or the like as the rod-shaped connecting member 40. do. In addition, on the lower side of the wooden wall material 1, the reinforcing connecting plate 57B is attached to the steel frame column by welding or the like with the end face of the reinforcing connecting plate 57B connected to the mounting plate 55B by welding or the like contacting the surface of the steel frame column 3. 3, and the mounting plate 55B is fixed to the lower end surface 13 side of the wooden wall material 1 using screws or the like as the rod-shaped connecting member 40.
As described above, the upper and lower sides of the wooden wall material 1 were each connected to the steel column 3 using the mounting plates 55B with the reinforcing connecting plates 57B.
That is, in a state where the end surface 11e of the wooden wall material 1 and a part of the outer circumferential surface of the steel column 3 are in contact with each other, a connecting means such as a flat bar 55B with a reinforcing connecting plate 57B as a connecting fitting, welding, or a rod-shaped connecting member is connected. A joint structure was created in which the wooden wall material 1 and the steel column 3 were joined.

Then, in a state where the end surface 11e of the wooden wall material 1 and a part of the outer peripheral surface of the steel column 3 are in contact with each other, the wooden wall material 1 and the steel column 3 are joined by the joining means to the wooden wall material 1 and the steel column. As shown in FIGS. 17(a) and 18(a), the joint structure with Embodiment 3 is provided with an outer fire-resistant treated portion 8 having a fire-resistant structure similar to that of the first embodiment.
As shown in FIG. 17(a), when H-shaped steel is used as the steel column 3, the surface of each flange of the H-shaped steel that is in contact with the end surface 11e of the wooden wall material 1 is covered other than the center side surface. A refractory material is provided to constitute the outer refractory treatment section 8.
Further, as shown in FIG. 18(a), when a square steel pipe is used as the steel column 3, the center side surface of a pair of mutually opposing side surfaces of the square steel pipe that is in contact with the end surface 11e of the wooden wall material 1 A refractory material is provided so as to cover the other surfaces, thereby forming the outer fireproofing section 8.

Further, the wooden wall material 1 and the steel column 3 are connected to each other by the joining means, with the end surface 11e of the wooden wall material 1 and a part of the outer peripheral surface of the steel column 3 being in contact with each other. As shown in FIGS. 17(b) and 18(b), the joining structure with Embodiment 3 is provided with a fireproof structure 8A similar to that of Embodiment 2.
As shown in FIG. 17(b), when H-shaped steel is used as the steel column 3, the outer fireproofing section 8 is located at the center side of each flange of the H-shaped steel that is in contact with the end surface 11e of the wooden wall material 1. A refractory material is provided to cover surfaces other than the front surface.
In addition, the inner fireproofing section 81 is formed with grooves 21 extending from the outside of both circumferential ends of the H section steel to the inside of the wooden wall material 1 in the outer fireproofing section 8 that covers the surface of the H section steel. By being provided so that the inside is filled with a fireproof material, the fireproof material extends from both ends in the circumferential direction of the H-shaped steel in the outer fireproof treatment section 8 to the inside of the wooden wall material 1.
In addition, as shown in FIG. 18(b), when square steel pipes are used as the steel columns 3, the outer fireproofing section 8 is formed between the square steel pipes facing each other that are in contact with the end surface 11e of the wooden wall material 1. A refractory material is provided to cover surfaces other than the central surface of the pair of side surfaces.
In addition, the inner fireproofing part 81 is formed with grooves 21 extending from the outside of both circumferential ends of the square steel pipe to the inside of the wooden wall material 1 in the outer fireproofing part 8 that covers the surface of the square steel pipe. By being provided so as to be filled with a fireproof material, the fireproof material extends from both circumferential ends of the square steel pipe in the outer fireproofing section 8 to the inside of the wooden wall material 1.

Further, the wooden wall material 1 and the steel column 3 are connected to each other by the joining means, with the end surface 11e of the wooden wall material 1 and a part of the outer peripheral surface of the steel column 3 being in contact with each other. As shown in FIGS. 17(c) and 18(c), the bonding structure with Embodiment 3 has a fireproof structure 8B similar to that of Embodiment 3.
As shown in FIG. 17(c), when H-shaped steel is used as the steel column 3, the fireproof treatment section 82 near the boundary is attached to each of the wooden wall materials 1, 1 joined to the surface of each flange of the H-shaped steel. In the vicinity of the board surface, a thermally expandable fireproof material is provided between the surface of each flange and the end surface 11e of the wooden wall material 1, in other words, the H located outside the board surface of the wooden wall material 1 This is a structure in which thermally expandable fireproofing material is provided so as to contact the surface of the flange of the H-section steel and the end surface 11e of the wooden wall material 1 near both ends of the surface 3f of the section steel.
The outer fireproofing section 80 covers the surface other than the center side surface of each flange of the H-section steel that is in contact with the end surface 11e of the wooden wall material 1, and the thermally expandable fireproofing material in the fireproofing section 82 near the boundary. In addition, as shown in FIG. 18(c), when a square steel pipe is used as the steel column 3, the boundary vicinity fireproofing section 82 A configuration in which a thermally expandable fireproof material is provided between the side surface of the square steel pipe and the end surface 11e of the wooden wall material 1 in the vicinity of the plate surface of each wooden wall material 1, 1 joined to a pair of mutually opposing side surfaces. In other words, the thermally expandable material contacts the side surface of the square steel pipe and the end surface 11e of the wooden wall material 1 near both ends of the surface 3f of the square steel pipe located outside the board surface of the wooden wall material 1. This structure includes fireproof material.
The outer fire-resistant treated portion 80 covers the surfaces other than the central surface of the pair of opposing side surfaces of the square steel pipe that are in contact with the end surface 11e of the wooden wall material 1, and the thermal expansion of the fire-resistant treated portion 82 near the boundary. The structure is such that the refractory material is provided so as to cover the surface of the refractory material.

Further, in a state where the end surface 11e of the wooden wall material 1 and a part of the outer peripheral surface of the steel column 3 are in contact with each other, the wooden wall material 1 and the steel column 3 are connected to each other by the joining means. In the joint structure with the pillar 3, a joint structure having a fireproof structure including a thermally expandable fireproof treated part and an outer fireproof treated part similar to Embodiment 4 was used.
When H-shaped steel is used as the steel column 3, the thermally expandable fireproofing part in the fireproof structure is a thermally expandable fireproofing material between the end surface 11e of the wooden wall material 1 and the center surface of the flange of the H-shaped steel. It is sufficient if the configuration is provided with the following.
In addition, when a square steel pipe is used as the steel column 3, the thermally expandable fireproofing part in the fireproof structure is such that a thermally expandable fireproofing material is provided between the end surface 11e of the wooden wall material 1 and the side surface of the square steel pipe. It may be configured according to the following.

In addition, in a state where the end surface 11e of the wooden wall material 1 and a part of the outer circumferential surface of the steel column 3 are in contact with each other, the wooden wall material 1 and the steel column 3 are connected to each other by the joining means. As shown in FIGS. 17(d) and 18(d), the joining structure was provided with a fireproof structure 8C similar to that of the fifth embodiment.
As shown in FIG. 17(d), when H-shaped steel is used as the steel column 3, for example, the temperature rise suppressing part 83 has a structure in which a gypsum board is provided as a temperature rise suppressing means on the inner surface of each flange. .
As shown in FIG. 18(d), when square steel pipes are used as the steel column 3, for example, the temperature rise suppressing portion 83 is formed by connecting the square steel pipes facing each other that are in contact with the end surface 11e of the wooden wall material 1. The structure is such that a gypsum board is provided as a temperature rise suppressing means on the inner surface located inside the pair of side surfaces.

According to Embodiment 11, the wooden wall material 1 and the steel column 3 are joined by the joining means in a state where the end surface 11e of the wooden wall material 1 and a part of the outer peripheral surface of the steel column 3 are in contact with each other. In the joint structure between the material 1 and the steel column 3, the same effects as in Embodiments 1 to 5 can be obtained.

In the above-described embodiments 1, 6, 7, 8, 9, and 10, the groove 2 formed to open on one plate surface 11 of the wooden wall material 1 and a part of the outer peripheral surface of the steel column 3 In the joint structure of the wooden wall material 1 and the steel column 3 in which the wooden wall material 1 and the steel column 3 are joined by a joining means in a state in which the wooden wall materials 1 and the steel column 3 are fitted together, Although a joint structure is illustrated in which the wooden wall material 1 and the steel columns 3A, 3B are joined using the joining means 4 in a state where the grooves 2A, 2B are fitted with a part of the outer peripheral surface of the steel columns 3A, 3B. , a state in which a groove 2 opened in one plate surface 11 of one wooden wall material 1 and formed so as to extend in the vertical direction is fitted with a part of the outer peripheral surface of one steel column 3. The wooden wall material 1 and the steel column 3 may be joined together by a joining means.
Even in this joint structure, by fitting a part of the outer circumferential surface of the steel column 3 into the groove 2 of the wooden wall material 1, a part of the outer circumferential surface of the steel column 3 is fitted into the groove 2 of the wooden wall material 1. The wooden wall material 1 is placed in a predetermined position by sandwiching the wooden wall material 1, and the movement of the wooden wall material 1 in the left and right direction (horizontal direction) is restrained by the steel columns 3. A wooden wall can be easily constructed by joining the wooden wall material 1 and the steel column 3 using the following.

Further, as the steel section forming the steel column 3, a section steel other than the H section steel, such as a channel steel, an angle steel, a CT section steel, etc. may be used.
In addition, as the steel pipe constituting the steel column 3, a steel pipe such as a round steel pipe with a hollow circular cross section may be used.

The wooden wall constructed by the joint structure of wooden wall materials and steel columns according to the present invention may be any type of wall, such as an exterior wall, curtain wall, partition wall, waist wall, or hanging wall.
If the wall in question is a wall that bears only horizontal force without bearing vertical load, fireproof coating is unnecessary and the wall can be constructed using wooden wall material 1. It becomes possible to construct a building with excellent design that can give a wood feel by using the wall material 1.

For example, as shown in FIG. 19, there is a space between adjacent steel columns 3 on one plate surface 11 side (indoor side) of the wooden wall material 1 in the wooden wall constructed according to the present invention. The steel beams 60 are connected, and a steel girder 61 is connected between the steel columns 3 in a direction orthogonal to the steel beams 60.
Then, for example, a deck plate (not shown) may be laid on the steel beam 60 and the steel girder 61, and a concrete slab may be cast on the deck plate to construct the floor 62.

According to the joint structure between the wooden wall material 1 and the steel column 3 according to the present invention, for example, the wooden wall material 1 can be used to connect the spandrels 1 (see Article 112, Paragraphs 10 and 11 of the Construction Order of the Building Standards Act). It is possible to construct a spandrel section with walls called.

As shown in FIG. 20, in the curtain wall 7 constructed by the curtain wall construction method, the boundary between the upper and lower floors on the outside of the building is formed into a fire spread prevention structural part called a spandrel part 70, and the spandrel part 70 is A window portion 71 is formed on the outer surface side of the upper and lower floors as a boundary.
That is, the spandrel part 70 of the curtain wall 7 is a fire spread prevention structure for preventing the spread of fire from the lower floor to the upper floor, which is provided at the boundary between the upper and lower floors of the building on the outer surface side of the building constructed by the curtain wall construction method. Department.

The building exterior side of the spandrel section 70 and the window section 71 include a plurality of mullions (mullions) 74, 4, . , surrounded by a plurality of transoms 73, 73... provided at predetermined intervals along the vertical direction between horizontally adjacent mullions, and mullions 74 and transoms 73. This configuration includes a wall panel 72 made of glass, metal, or other material that is fitted into a rectangular frame.

The spandrel portion 70 includes one mullion 74 and the other mullion 74 that are provided facing each other at a predetermined interval along the horizontal direction on the outside of the building and extend in the vertical direction. 74 and the other mullion 74, one mullion 73 and the other mullion 73 are provided at a predetermined interval along the vertical direction, and these one mullion 74 and the other mullion A wall panel 72 formed of glass, metal, or other material is fitted into a rectangular frame surrounded by a rectangular frame 74, one blind 73, and the other blind 73, and is opposed to the wall panel 72. A wall for preventing the spread of fire called a spandrel (see Article 112, Paragraphs 10 and 11 of the Construction Order of the Building Standards Act) installed between the wall panel 72 and the floor 62 of the building, and a wall for preventing the spread of fire installed between the wall panel 72 and the building floor 62. An upper supporting member 75 is configured to close the gap between the upper blind 73 connected to the upper end side and the upper end side of the spandrel 1 and to have a predetermined fire resistance, and is connected to the lower end side of the wall panel 72. A lower support member 76 is configured to close the gap between the lower blind 73 and the lower end side of the spandrel 1 and to have a predetermined fire resistance.

The spandrel 1 is a wall installed between the wall panel 72 and the building floor 62 so as to face the wall panel 72 on the building exterior side of the spandrel part 70, and extends vertically and horizontally. , has a wall surface (board surface) facing parallel to the board surface of the wall panel 72, and has an upper end located above the upper surface of the floor 62 and a lower end located below the lower surface of the floor 62. It is a wall that is installed such that its upper end is located above the upper surface of the floor 62, or that its lower end is located below the lower surface of the floor 62.

According to the Construction Order of the Building Standards Act, in order for the spandrel 1 to become a fire prevention division (floor), the vertical height dimension must be 900 mm or more (i.e., the minimum vertical height dimension is 900 mm), and It is stipulated that the structure must be semi-fireproof.

For example, by constructing the wall constituting the spandrel 1 using a wooden wall material 1 having a board thickness of 60 mm or more, it is possible to realize a spandrel 1 having a semi-fireproof structure for 60 minutes with the thickness of the wood wall material 1. .

The mullions 74 are fixed to the building frame via the spandrels 1 and the like, for example, by fixing means not shown.
Both end sides in the horizontal direction of the blind 73 are fixed to the mullions 74, 74 via, for example, fixing means not shown.

The upper support member 75 and the lower support member 76 are connected to the grid 73 on the outside of the building, and are provided with a rail 77 on the indoor side of the building, and the indoor side is supported by the spandrel 1 via the rail 77. Ru.
That is, the upper support member 75 connects the upper end side of the spandrel 1 and the upper end opening 73 facing the upper end side of the spandrel 1, and closes the gap between the upper opening 73 and the upper end side of the spandrel 1. At the same time, it functions as a support member for supporting the upper blind 73 on the spandrel 1.
Similarly, the lower support member 76 connects the lower end side of the spandrel 1 and the lower end hole 73 facing the lower end side of the spandrel 1, and connects the lower end side 73 and the lower end side of the spandrel 1. It functions as a support member that closes up the space between the holes and supports the lower blind 73 on the spandrel 1.

Between the upper end side of the wall panel 72 and the upper end side of the spandrel 1, the upper support member 75, the upper blind 73, and the fireproofing section 80 provided on the upper support member 75 and the upper blind 73 An upper member is configured to block the upper member and to have a predetermined fire resistance.
Similarly, the lower end side of the wall panel 72 and the spandrel are connected by the lower support member 76, the lower blind 73, and the fireproofing section 80 provided in the lower support member 76 and the lower blind 73. A lower member is configured to close the space between the lower end side of the lower end of the lower end member 1 and to have a predetermined fire resistance.

The fireproofing portions 80 of the upper member (the upper mesh 73 and the upper support member 75) and the lower member (the lower mesh 73 and the lower support member 76) include, for example, the surfaces of the upper member and the lower member, That is, as shown in FIG. 20, the upper supporting member 75 and the upper blind 73, the lower supporting member 76 and the lower blind 73 are surrounded by the wall panel 72, the upper member, the spandrel 1, and the lower member. The inner surface, which is in contact with the enclosed space, and the outer surface, which is the outside of the space, are provided with fireproof material.
As the fireproof material, for example, sprayed rock wool, fireproof board, thermally expandable fireproof material (eg, thermally expandable fireproof paint, thermally expandable fireproof sheet, etc.) may be used.

That is, semi-fireproof wooden planks are used as the wooden wall materials 1 constituting the spandrels 1, and fire-resistant treated sections are provided on the mullions 74, the blinds 73, the upper support members 75, and the lower support members 76 on the outside of the building. 80, it is possible to construct the spandrel portion 70 having a quasi-refractory structure.

In a building equipped with the spandrel portion 70 of the curtain wall 7, if the spandrel 1 is made of a semi-fireproof wooden wall material (wooden board) 1, when the wooden wall material constituting the spandrel 1 is viewed from the indoor side The appearance of the spandrels 1 is improved, the wooden feel of the spandrels 1 can be enjoyed, the design of the interior is improved, and a building can be provided in which the office environment can be improved.

In addition, in a building equipped with the spandrel portion 70 of the curtain wall 7, if the spandrel 1 is made of semi-fireproof wooden wall material (wooden board) 1, the spandrel is made of a fireproof board such as a calcium silicate board. It is possible to provide a spandrel section 70 having a spandrel 1 that is strong against impact and hard to be damaged compared to conventional spandrel sections.

Furthermore, by configuring the spandrel section 70 to include a wall panel 72 formed of a light-transmitting material such as glass, when the building is viewed from outside, the glass panel of the spandrel section 70 etc. The wooden wall materials (wooden planks) 1 constituting the spandrels 1 can be seen through the wall panel 72, and the wooden texture of the spandrels 1 can be enjoyed from the outside of the building, providing a building with an excellent exterior design. Become.

In addition, as disclosed in Patent Documents 1 and 2, spandrels often use calcium silicate boards (fireproof boards), so the moisture absorption and desorption effect of the calcium silicate boards makes it difficult for glass panels, etc. It is known that there is a problem in which condensation occurs on the panel surface of the wall panel 72 (for example, "Dew condensation simulation program for the design of glass curtain wall spandrels and its accuracy verification", Takashi Gondo, Kuniaki Mihara, Masahiko Oyama, Shuichi Hokoi) , Architectural Institute of Japan, Environmental Studies Volume 81, No. 726, 687-696, August 2016).
On the other hand, in a building including the spandrel portion 70 described above, if the spandrel 1 is made of wooden wall material (wooden board material) 1, compared to the case where the spandrel is made of calcium silicate board, the wall panels such as glass panels It is also possible to obtain the effect that dew condensation is less likely to occur on the panel surface of the panel 72, and it becomes possible to suppress the unsightly appearance caused by dew condensation when the building is viewed from outside the building.

1 wooden wall material, 2, 2A, 2B groove, 3, 3A, 3B steel column, 4 connecting means,
8 External fireproofing section, 11 Board surface of wooden wall material, 11e End surface of wooden wall material,
80 outer fireproofing part, 81 inner fireproofing part, 82 boundary vicinity fireproofing part,
83 Temperature rise suppression section.

Claims (5)

The wooden wall material and the steel column are joined by a joining means in a state where a groove formed to open on the board surface of the wooden wall material and a part of the outer peripheral surface of the steel column are fitted together. A joint structure between wall materials and steel columns,
A joint between a wooden wall material and a steel column, characterized in that it is provided with an outer fireproofing section configured by providing a fireproof material so as to cover the surface of the steel column positioned outside the board surface of the wooden wall material. structure. A state in which a groove formed to open on the board surface of a wooden wall material and a part of the outer circumferential surface of a steel frame column are fitted together, or a state in which the board surface or end surface of a wooden wall material and a part of the outer circumferential surface of a steel column column are fitted. A joint structure of a wooden wall material and a steel column in which the wooden wall material and the steel column are joined by a joining means in a state in which the wooden wall material and the steel column are in contact with each other,
an outer fireproofing section configured by providing a fireproofing material so as to cover the surface of a steel column located outside the board surface of the wooden wall material;
an inner fireproofing section provided so as to extend from both circumferential ends of the steel column in the outer fireproofing section to the inside of the wooden wall material;
Equipped with
The inner fireproofing section extends from both end positions in the circumferential direction of the steel column located outside the board surface of the wooden wall material, along the surface of the steel column from the board surface of the wooden wall material to the inside of the wooden member. A joint structure between a wooden wall material and a steel column, characterized by comprising a groove formed therein and a refractory material provided to fill the groove. A state in which a groove formed to open on the board surface of a wooden wall material and a part of the outer circumferential surface of a steel frame column are fitted together, or a state in which the board surface or end surface of a wooden wall material and a part of the outer circumferential surface of a steel column column are fitted. A joint structure of a wooden wall material and a steel column in which the wooden wall material and the steel column are joined by a joining means in a state in which the wooden wall material and the steel column are in contact with each other,
A near-boundary fireproofing section configured by providing thermally expandable fireproofing material in contact with the steel column and the wooden wall near both ends of the surface of the steel column located outside the board surface of the wooden wall; ,
an outer fireproofing part configured to include a fireproofing material so as to cover the surface of the steel column located outside the board surface of the wooden wall material and the surface of the thermally expandable fireproofing material of the fireproofing part near the boundary;
A joint structure between wooden wall materials and steel columns. A state in which a groove formed to open on the board surface of a wooden wall material and a part of the outer circumferential surface of a steel frame column are fitted together, or a state in which the board surface or end surface of a wooden wall material and a part of the outer circumferential surface of a steel column column are fitted. A joint structure of a wooden wall material and a steel column in which the wooden wall material and the steel column are joined by a joining means in a state in which the wooden wall material and the steel column are in contact with each other,
Thermal expandability is maintained between the groove formed to open in the plate surface of the wooden wall material and a part of the outer peripheral surface of the steel column fitted into the groove so as to contact the wooden wall material and the steel column. A thermally expandable fireproofing treatment section configured with fireproofing material, or a part that comes into contact with the wooden wall material and the steel column between the plate surface or end surface of the wooden wall material and a part of the outer peripheral surface of the steel column. a thermally expandable fireproofing section configured by providing a thermally expandable fireproofing material;
an outer fireproofing section configured by providing a fireproofing material so as to cover the surface of a steel column located outside the board surface of the wooden wall material;
A joint structure between wooden wall materials and steel columns. Any one of claims 1 to 4, further comprising a temperature rise suppressing section that is provided with a temperature rise suppressing means so as to be in contact with the steel column to suppress a temperature rise of the steel column in the event of a fire. The joint structure between wooden wall materials and steel columns described in .

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