WO2024058086A1

WO2024058086A1 - Steel pillar, and hybrid pillar material with wood using said steel pillar

Info

Publication number: WO2024058086A1
Application number: PCT/JP2023/032943
Authority: WO
Inventors: 茂内田
Original assignee: 株式会社内田鐵工所
Priority date: 2022-09-14
Filing date: 2023-09-11
Publication date: 2024-03-21
Also published as: JP2024041696A; JP7262159B1

Abstract

Provided are: a steel pillar that can directly adhere wood or the like to the outer surface of a pillar surface portion of the steel pillar; and a hybrid pillar material with wood using the steel pillar. In this angular tube-shaped steel pillar, female screw portions are provided in a tapped manner in longitudinal pillar surface portions constituting a square pillar in which a hollow section is formed. As another aspect, the angular tube-shaped steel pillar comprises pillar surface portion bridging members fixed in a state in which the ends thereof are internally fitted to through-holes respectively provided in facing pillar surface portions among pillar surfaces of the longitudinal four surfaces constituting a square pillar having a hollow section therein, such that the bridging members span the inside of the hollow section between facing pillar surface portions, and female screw portions are provided in end surfaces of the bridging members.

Description

Steel columns and hybrid column materials using them with wood

The present invention relates to a rectangular cylindrical steel column that can easily fix wood, panels, etc. to the outer surface of the column surface, and a hybrid column material using the same with wood.

Conventionally, as a hybrid column material with wood using a steel frame column, grooves are cut in the longitudinal direction from the longitudinal surface of a long wood material, and a steel pipe is inserted into the groove. By bonding two surfaces formed on both sides of the groove of the long material and a wood-based covering material having a width spanning the groove and covering the two surfaces, the two wood materials are joined. A method of manufacturing a steel pipe/wood hybrid pillar material (Patent Document 1) has been proposed.

In addition, conventionally, as a hybrid column material using wood and steel columns, a cushioning material is wrapped around the steel pipe column, laminated wood is wrapped around the outer periphery, and a grain finish is added to the outer circumferential surface of the laminated wood. The glulam is assembled by pasting, and the glulam is joined by forming interlocking grooves on the end faces of a plurality of glulam divided pieces, and interlocking and adhering the interlocking grooves of each of the glued laminated pieces to each other. A building material (Patent Document 2) has been proposed.

JP2017-89329A (Claim 4, Figure 2) JP-A-57-54653 (Claims, Figure 2)

The problem that we are trying to solve regarding steel columns and hybrid column materials using wood is that conventionally, when covering a steel column with wood such as laminated wood, it was necessary to glue the pieces of wood together around the steel column. For example, when a steel frame column is a square column and has four column faces (outer surfaces of the column surface), for example, when fixing a panel such as an external wall to one of the four column faces, the panel must be The structure makes it difficult to attach directly to the surface of a steel column. That is, for conventional steel columns, no structure has been proposed in which wood or the like is directly fixed to the column surface.

Therefore, an object of the present invention is to provide a steel frame column that can directly fix wood or the like to the outer surface of the column face portion of the steel frame column, and a hybrid column material using the same with wood.

The present invention includes the following configuration to achieve the above object.
According to one embodiment of the steel column according to the present invention, it is a rectangular cylindrical steel column, and between the four vertically long column surfaces constituting the rectangular column in which a hollow portion is formed, there is a space between the opposing column surface portions. a bridging member between the columnar parts fixed with an end fitted into a through hole provided in each of the facing columnar parts so as to be bridged within the hollow part, the bridging member It is characterized in that a female threaded portion is provided on the end face.

According to one embodiment of the steel column according to the present invention, the spanning member is provided by a cylindrical bar.

According to one embodiment of the steel column according to the present invention, a groove is provided at the peripheral edge of the through hole provided in the column surface portion on the outer surface side of the column surface portion, and the bridging member is connected to the column surface portion. It can be characterized in that the outer periphery of the end of the bridging member and the groove are fixed by welding.

According to one embodiment of the steel column according to the present invention, the spanning member spans between one facing column surface portion and the other facing column surface portion. The square pillars may be arranged alternately at intervals in the longitudinal direction of the square pillar.
According to one embodiment of the steel column according to the present invention, the hollow portion of the square column may be filled with concrete.

According to one embodiment of the hybrid column material with wood using a steel frame column according to the present invention, by screwing a bolt into the female thread portion, a portion of the wood is inserted between the outer surface of the column surface portion and the head of the bolt. It can be characterized in that it is fixed in a sandwiched state.

According to the steel column and the hybrid column material with wood using the same according to the present invention, a particularly advantageous effect is achieved in that wood, etc. can be directly fixed to the outer surface of the column surface of the steel column.

1 is a sectional view showing a first embodiment of a steel column according to the present invention. FIG. 2 is an enlarged sectional view showing details of the tapping section of the embodiment of FIG. 1; FIG. 2 is a sectional view showing a construction method of the embodiment of FIG. 1. FIG. FIG. 2 is a cross-sectional view of a hybrid column material with wood using the steel column of the embodiment shown in FIG. 1; It is a top view which shows the 2nd example of a steel frame column based on this invention. FIG. 6 is an enlarged sectional view showing details of the tapping section of the embodiment of FIG. 5; FIG. 5 is a side view of a column material using the steel column of the embodiment shown in FIG. 4; FIG. 6 is a cross-sectional view of a hybrid column material with wood using the steel column of the embodiment shown in FIG. 5;

Hereinafter, embodiments of a steel column and a wood hybrid column material using the same according to the present invention will be described in detail based on the drawings (FIGS. 1 to 8).

In a first embodiment of the steel column according to the present invention, as shown in FIGS. 1 and 2, it is a rectangular cylindrical steel column 10, and a vertically long (elongated) column surface portion 11 constituting a square column has an internal thread. The portion 12 is provided by tapping.
Note that the column surface portion 11 in this embodiment is a plate-shaped thick wall portion that constitutes the four sides of the square cylindrical steel column 10 such as a square column of steel pipes, and has a required thickness to provide the required strength. The outer surface thereof forms the elongated column surface (outer surface) of the steel column 10.

According to this, the wood 30 etc. can be directly fixed to the column surface portion 11 of the steel column 10. That is, as shown in FIG. 4 showing the fixed state of the wood 30, a member such as the wood 30 can be properly and easily fixed to a column (steel column 10) by fastening the bolt 40 to the female threaded portion 12. Can be done. More specifically, by screwing the bolt 40 into the female threaded portion 12, the wood 30 can be fixed in a sandwiched state between the outer surface of the columnar surface portion 11 and the head of the bolt 40. In this way, by fixing the wood 30 to the column surface portion 11 of the steel column 10, fire resistance can be improved. Note that as the wood 30, it is preferable to use laminated wood with few dimensional deviations, but it is not limited to this, and since it can be directly fixed to the column surface 11, the allowable value of the dimensional accuracy between the wood 30 can be adjusted. It can be made larger, and wood materials other than laminated wood can be suitably used, increasing the range of tolerance.

Note that the head of the bolt 40 is placed in the slot 32 provided on the surface side of the wood 30 and is hidden by the decorative wood piece 33. This makes it possible to improve the appearance of the column surface 34 (outer surface) made of wood 30. Moreover, the head of the bolt 40 is provided so as to come into pressure contact with the wood 30 via the washer 41, which has the effect that the wood 30 is not damaged. Furthermore, the diameter of the bolt hole 31, which is a through hole provided in the wood 30 through which the bolt passes, should be set larger than the diameter of the bolt 40, taking into consideration the difference in thermal expansion coefficient between the steel column 10 and the wood 30. If possible, it is sufficient that the gap caused by displacement between the steel column 10 and the timber 30 can be tolerated.

Furthermore, according to this method of attaching the wood 30 and the like to the column surface portion 11 of the steel column 10, each piece of wood (wood 30) can be separately fixed to the steel column 10, as shown in FIG. In addition, instead of any of the timbers 30 fixed to each column surface part 11, a panel such as an outer wall or a member (for example, C-shaped steel) fixed in a horizontal beam-like manner may be fixed as appropriate. You can also do that.

By the way, in the past, it has not been possible to perform tapping (thread cutting) at accurate positions on the four sides of the column surface portion 11 of a square cylindrical steel column 10 such as a square column of steel pipes, between each surface of the column surface portion 11. It was difficult and time-consuming. This has been a hindrance, and in the past, the timbers have been fixed to the steel column 10 by gluing the timbers 30 together or fixing the timbers together with nails.

In contrast, recently, machines have been developed that can freely process long steel materials such as the steel column 10 by cutting, drilling, tapping, etc. Machine tools that can process steel materials with extremely high precision are now available. According to this, it is possible to perform tapping (thread cutting) at accurate positions on the four surfaces of the column surface portion 11 of the steel column 10 with respect to each surface of the column surface portion 11. As a result, it becomes possible to easily produce the steel column 10 according to the present invention as described above, and the conventional inhibiting factors can be eliminated.

The embodiment shown in FIG. 1 can also be used to strengthen a column by pouring concrete 60 into the steel column 10 (in this embodiment, a square steel pipe). The construction process at that time is, as shown in FIG. 3, after a dummy bolt 50 is screwed into the female threaded portion 12 and set, concrete 60 is filled inside the steel column 10 and hardened. Next, after the concrete 60 has hardened, the dummy bolts 50 are removed. That is, the concrete 60 and the metal dummy bolt 50 are not bonded together, and the dummy bolt 50 can be easily attached and detached. Then, as shown in FIG. 4, members such as wood 30 can be appropriately fixed to the column surface portion 11 of the steel column 10 using bolts 40.

In the second embodiment of the steel column according to the present invention, as shown in FIGS. 5 and 6, the steel column 10 has a rectangular cylindrical shape, and has four vertically long sides constituting a square column in which a hollow portion 16 is formed. The end portions of the columnar portions 11 are fitted into the through holes 13 provided in each of the opposing

columnar portions

11, 11 so as to be bridged between the opposing

columnar portions

11, 11. A bridging member 20 is provided between the columnar surface portions, and a female screw portion 21 is provided on the end face of the bridging member 20. That is, a pair of female screw portions 21 are provided on the central axis of the bridging member 20 so that a male screw can be screwed into the center axis from either end surface.
Note that the female threaded portion 21 may be formed in advance before the bridging member 20 is spanned and fixed, or may be provided by tapping after the bridging member 20 is spanned and fixed. .

Further, in this second embodiment, as shown in FIG. 7, the bridge members 20 are arranged at intervals within the steel column 10 so as not to interfere with each other in the longitudinal direction (vertical direction). In the example of FIG. 7, the bridge members 20 are arranged at regular intervals in the vertical direction of the steel column 10, but the present invention is not limited to this, and each bridge member 20 Of course, the spacing between the bridging members 20 and the number thereof can be set appropriately as long as they do not interfere with each other in the longitudinal direction (vertical direction).
In addition, in this embodiment, the bridging member 20 is fixed substantially perpendicularly to a pair of

columnar surfaces

11, 11 arranged substantially parallel to each other, as a reasonable general-purpose form. There is.
Furthermore, in this embodiment, the bridging member 20 is bridged between one facing

columnar surface portions

11, 11, and the other bridged member bridged between the opposing

columnar surface portions

11, 11. They are alternately arranged at intervals in the longitudinal direction of the square pillars (steel pillars 10). According to this, the plurality of bridging members 20 are arranged alternately so as to intersect (orthogonally in this embodiment) in the front, rear, left, and right directions in a plan view, and the rigidity of the steel column 10 can be increased in a well-balanced manner. can.

According to this, the wood 30 and the like can be directly fixed to the column surface portion 11 of the steel column 10, similarly to the first embodiment described above. That is, as shown in FIG. 6 showing the fixed state of the wood 30, a member such as the wood 30 can be properly and easily fixed to a column (steel column 10) by fastening the bolt 40 to the female threaded portion 21. Can be done. More specifically, by screwing the bolt 40 into the female threaded portion 21, the wood 30 can be secured in a state where it is sandwiched between the outer surface of the columnar surface portion 11 and the head of the bolt 40.

Further, similarly to the first embodiment described above, the head of the bolt 40 is placed in the slot 32 provided on the surface side of the wood 30 and is hidden by the decorative wood piece 33. This makes it possible to improve the appearance of the column surface 34 made of wood 30. Further, the head of the bolt 40 is provided so as to come into pressure contact with the wood 30 via the washer 41, which has the effect of not damaging the wood 30. Further, the hole diameter of the bolt hole 31 provided in the wood 30 may be set larger than the diameter of the bolt 40 in consideration of the difference in thermal expansion coefficient between the steel frame column 10 and the wood 30. It is only necessary to allow a gap caused by displacement between the wood 30 and the wood 30.

Furthermore, similarly to the first embodiment described above, according to the manner in which the wood 30 and the like are attached to the column surface portion 11 of the steel frame column 10, each piece of wood (wood 30) is It can be separately fixed to the steel column 10. In addition, instead of any of the timbers 30 fixed to each column surface part 11, a panel such as an outer wall or a member (for example, C-shaped steel) fixed in a horizontal beam-like manner may be fixed as appropriate. You can also do that.

Also in this second embodiment, although not shown, similar to the first embodiment described above, concrete 60 can be poured into the steel column 10 and hardened to increase the strength of the column. In this case, since the bridging member 20 is fixed between the columnar parts 11, it is possible to prevent the columnar parts 11 from deforming in a bulging manner. Further, since the through hole 13 is filled with the end portion of the bridging member 20, there is no loss of cross section, it is possible to prevent destruction due to stress concentration, and it is possible to obtain sufficient strength.

According to this embodiment, the spanning member 20 is provided by a cylindrical bar, so that the steel column 10 of the second embodiment can be formed rationally and easily. Note that the bridging member 20 is not limited to a bar with a solid axis as in this embodiment, but may be a bar with a hollow axis as long as the female threaded portion 21 can be appropriately provided. It may be. In addition, in order to fix the bridging member 20 provided with this cylindrical bar material between the column surface portions 11 of the steel column 10, the column surface portion 11 is located at the periphery of the through hole 13 provided in the column surface portion 11. A groove 14 is provided on the outer surface side of the groove 14, and a bridging member 20 is fixed by welding between the outer periphery of the end 20 of the bridging member and the groove 14. . According to this, the steel column 10 of the second embodiment can be formed rationally and easily while suppressing the influence of welding heat on the end portion of the spanning member 20. In this embodiment, both end surfaces of the bridging member 20 are formed so as to be flat with the outer surface of the columnar section 11, but the present invention is not limited to this. It can also be in the form of a protruding convex portion. According to the convex portion at the end of the bridging member 20, welding can be easily performed, and in relation to the attachment material such as the wood 30, a recessed portion is provided on the side of the attachment material, and during temporary fixing. The fitting relationship (positioning means) in a loose fitting state can be used for purposes such as the following.

By the way, conventionally, on the four sides of the column surface portion 11 of a square cylindrical steel column 10 such as a square steel pipe column, holes are drilled or grooves are formed at accurate positions between each surface of the column surface 11. It was difficult and time-consuming to carry out such processing. This has been a hindrance, and in the past, the timbers have been fixed to the steel column 10 by gluing the timbers 30 together or fixing the timbers together with nails.

In contrast, recently, equipment has been developed that can freely process long steel materials such as the steel column 10 by cutting, drilling holes, and forming grooves, using fiber lasers, etc. Computer-controlled machine tools that can process steel materials with extremely high precision are becoming available. According to this, it is possible to easily provide through holes 13 with grooves 14 formed at accurate positions on the four sides of the column surface portion 11 of the steel column 10 with respect to each surface portion of the column surface portion 11. ing. As a result, the steel column 10 of the second embodiment of the present invention explained above can be easily produced, and the conventional inhibiting factors are eliminated. Note that the bridging member 20 and the through-hole 13 of the columnar surface portion 11 of the present invention are not limited to the above-mentioned forms, and that at least one end of the bridging member 20 is provided with a male thread, and the male thread is threaded. The through hole 13 may be in the form of a female screw portion 12 so that the through hole 13 is fixed in an internally fitted state by mating. In addition, the bridging member 20 is provided with male threads at both ends, and the diameter of the middle part of the bridging member 20 is made thinner than the inner diameter of the female threaded part 12 to improve symmetry and improve the symmetry of the facing pillars. You may make it span between the surface parts 11.

Next, specific dimensions (sizes), etc. of the specific examples of the embodiments described above will be briefly explained.
The length (height) of the steel column 10 fixed on the substrate 15 in the example shown in FIG. Three front and rear bridging members 20 are fixed at a pitch of 1 m, and two left and right bridging members 20 spanned between the left and right surfaces in the drawing are fixed at a pitch of 1 m, The pitch between the front and rear bridging members 20 and the left and right bridging members 20 is 50 cm. Further, the steel column 10 of this embodiment has a rectangular cylindrical shape with one side of the square being, for example, 30 cm or 45 cm, the size of the groove 14 is, for example, 3 to 5 mm, and the bolt 40 is assumed to be, for example, M12 to M22. However, it is of course not limited to these.

Further, according to the embodiment described above, the bridging members 20 are arranged one by one at intervals in the required positions in the height direction (longitudinal direction of the pillar material). The invention is not limited to this, and it goes without saying that a plurality of bridging members 20 may be arranged at predetermined positions in the height (longitudinal) direction of the steel column 10.
Furthermore, according to the present invention, the present invention is not limited to pillar materials that can be erected vertically, but can of course be applied to pillar-shaped structural materials that are long and square in cross section.

Although the present invention has been variously explained above using preferred embodiments, the present invention is not limited to these embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. It is about.

10 Steel column (square column)
11 Column surface part 12 Female thread part 13 Through hole 14 Bevel 15 Substrate 16 Hollow part 20 Bridging member 21 Female thread part 30 Wood 31 Bolt hole 32 Slot hole 33 Decorative wood piece 34 Column surface 40 Bolt 41 Washer 50 Dummy bolt 60 Concrete

Claims

It is a rectangular cylindrical steel column, and among the four vertically elongated column surface portions constituting a rectangular column in which a hollow portion is formed, the opposing column surface portions are bridged within the hollow portion between the opposing column surface portions. It is characterized by comprising a bridging member between the columnar parts fixed to each other with an end fitted into a through hole provided in each of the columnar parts, and a female threaded part is provided on the end face of the bridging member. A steel column.
The steel column according to claim 1, wherein the spanning member is provided by a cylindrical bar.
A groove is provided at the peripheral edge of the through hole provided in the columnar surface on the outer surface side of the columnar surface, and the bridging member connects the outer periphery of the end of the bridging member with the groove. 3. The steel column according to claim 2, wherein the steel column is fixed by welding between the steel columns.
The bridging member is configured such that one bridged between one facing column surface portion and the other bridged member spanned between the other facing column surface portion are spaced apart in the longitudinal direction of the square column. 4. The steel column according to claim 3, wherein the steel columns are arranged alternately.
The steel column according to claim 4, wherein the hollow portion of the square column is filled with concrete.
Any one of claims 1 to 5, characterized in that a bolt is screwed into the internally threaded part, thereby fixing the wood in a sandwiched state between the outer surface of the column face part and the head of the bolt. This is a hybrid column material using wood and steel columns as described in the above.