JP2019094676A - Steel built-up column - Google Patents

Abstract

To provide a steel built-up column excellent in workability and economical efficiency, capable of easily, surely and nonrotatably extending a lower position stand column and an upper position stand column without increasing the number of part items.SOLUTION: A plurality (for example, three pieces) of stand columns 1, 2 and 3 are extended so as to partially overlap, and overlapping parts 11a and 12a (or 22a and 13a) of an extension end part 11 (or 22) of a lower position stand column 1 (or 2) and an extension end part 12 (or 13) of an upper position stand column 2 (or 3) are formed in a nonrotatable cross-sectional polygonal shape. The extension end part 11 (or 22) of the lower position stand column 1 (or 2) is formed by linking a diameter reduction part 11b (or 22b) of reducing a diameter upward in a taper shape and the overlapping part 11a (or 22a), and the extension end part 12 (or 13) of the upper position stand column 2 (or 3) is formed by linking a diameter expansion part 12b (or 13b) of expanding a diameter downward in a taper shape and the overlapping part 12a (or 13a).SELECTED DRAWING: Figure 1

Description

  In the present invention, a plurality of tubular columns are added so as to partially overlap each other, and an antenna, a lamp, a traffic light, a speaker, or a steel assembling column such as a panther mast capable of externally attaching a lightning rod (also referred to as a steel plate assembling column) Belongs to the technical field of ..).

The steel assembling column is usually divided into two or three pipe columns and carried to the site such as the ground or a roof of a building, and assembled by joining the pipe columns in the vertical direction at the site.
The upper part of the steel building column is equipped with the above-mentioned external members such as an antenna, a lamp and a traffic signal, but this external member is offset with respect to the axial center of the steel building column. In many cases, the upper tube column may be rotated relative to the lower tube column, such as torsion acting on the tube column constituting the steel assembly column.
This rotating action needs to be prevented in advance to ensure the safety (stability) of the entire steel assembly column, and to keep the performance of the external members such as the antenna, the lamp and the traffic signal normal. Yes, it is an issue to be solved.

  For example, in Patent Literatures 1 and 2, in a steel construction column formed by joining a plurality of pipe columns so as to partially overlap, polymerization of the joint end of the lower pipe column and the joint end of the upper pipe column is performed. There is disclosed a technique of screwing a bolt into a part and non-rotatably joining (connecting) a lower tubular column and an upper tubular column.

Patent No. 5858816 gazette JP, 2016-191213, A

According to the bolt jointing technology concerning the above-mentioned patent documents 1 and 2, since the lower tube pillar and the upper tube pillar can be non-rotatably joined (connected), the above-mentioned subject can be solved.
However, in the bolting technology, the number of parts inevitably increases, and the work process at the site increases accordingly, which increases the work period, and noise is generated when using a tool such as an impact wrench in connection with bolting work. There is room for improvement in terms of workability and economy, for example.

  The present invention has been made in view of the problems in the background art described above, and the object of the present invention is to simply and surely lower pipe pillars and upper pipe pillars without increasing the number of members. It is an object of the present invention to provide a steel assembling column excellent in workability and economy, capable of non-rotatably connecting (connecting).

As means for solving the problems of the above-mentioned background art, the steel assembling column according to the invention described in claim 1 is a steel assembling column formed by joining a plurality of pipe columns so that a part thereof overlaps.
It is characterized in that the overlapping portion between the joining end of the lower tubular column and the joining end of the upper tubular column is formed into a non-rotatable cross-sectional polygonal shape.

The invention described in claim 2 is the steel constructed column described in claim 1,
The connection end portion of the lower tube column is formed by connecting the reduced diameter portion which is tapered downward to the upper side and the overlapping portion, and the connection end portion of the upper tube column is tapered downward The expanded diameter portion and the overlapping portion are connected in series.

The invention described in claim 3 is the steel constructed column according to claim 1 or 2, wherein
The overlapping portion at the joining end of the lower tubular column is formed to be tapered downward in diameter, and the overlapping portion at the joining end of the upper tubular column is formed to extend downward in a tapered shape. It is characterized by

  The invention described in claim 4 is characterized in that, in the steel constructed column described in claim 3, the taper ratio of the overlapping portion is set in the range of 0 to 1/50.

  The invention according to claim 5 is characterized in that, in the steel construction column according to any one of claims 1 to 4, the cross-sectional polygon is a regular polygon having a quadrangle or more and a hex or less. I assume.

According to the steel assembly pillar of the present invention, it is possible to realize a non-rotatable structure while performing an operation of joining the lower pipe column and the upper pipe column. Therefore, the lower pipe column and the upper pipe column can be connected in a non-rotatable manner simply and reliably without increasing the number of members.
In other words, there is no need to process the rotation prevention (for example, bolt connection work) to the polymerization part (fitting part) at all, and the workability at the time of building pillar is improved. .
In addition, in the case of forming the polymerization portion in a tapered shape, since it is possible to easily realize a joining structure with higher adhesion and error absorption, the quality and reliability are excellent.
When the non-rotatable cross-sectional polygon is implemented with a regular tetragon, regular octagon, regular tetragon, etc., as shown in FIG. 8, not only the upper and lower surfaces but also the left and right surfaces become flat. Because it is more rational and superior in terms of storability, handling and transportability. The upper, lower, left, and right flat surfaces have an advantage in construction that can be used as a marker, for example, it is easy to mechanically determine the direction (directivity) of the pipe column (in particular, the pipe column fixed first) at the time of building column.

A is an elevation view showing Example 1 of the steel assembly pillar concerning the present invention, and B is an exploded view of A. FIG. A to C are an end view taken along the line A-A, a cross section taken on the line B-B, and an end view taken on the line C-C of FIG. They are an D section enlarged view, an E section enlarged view, an F section enlarged view, and a G section enlarged view of FIG. A is an elevation view showing Example 2 of a steel assembly pillar concerning the present invention, and B is an exploded view of A. [FIG. 4A to 4C are an end view taken along line A-A, a cross-sectional view taken along line B-B, and an end view taken along line CC of FIG. A is an elevation view showing Example 3 of a steel assembly pillar concerning the present invention, and B is an exploded view of A. [FIG. 6A to 6C are an end view taken along line A-A, a cross-sectional view taken along line B-B, and an end view taken along line CC of FIG. A to C are stack diagrams showing the storage (transportation) state of the pipe post shown in the first, second and third embodiments, respectively. A is an elevation view showing Example 4 of a steel assembly pillar concerning the present invention, and B is an exploded view of A. [FIG. It is the H section enlarged view of FIG.

  Next, an embodiment of a steel assembling column according to the present invention will be described based on the drawings.

FIG. 1A shows the entire structure of a steel assembling column 10 according to the present invention, and FIG. 1B shows tube columns 1, 2 and 3 which are its constituent members.
The steel assembling column 10 according to the illustrated example is formed by joining a plurality of (three in this embodiment) pipe columns 1, 2 and 3 so that a part thereof overlaps with each other, and the lower pipe column 1 (or 2) The overlapping portions 11a, 12a (or 22a, 13a) of the addition end 11 (or 22) and the addition end 12 (or 13) of the upper tube column 2 (or 3) are formed into a non-rotatable cross-sectional polygon. ing.
Reference numeral 15 in the figure indicates a base, reference numeral 16 indicates a base plate, reference numeral 17 indicates an anchor bolt, and reference numeral 18 indicates a rising portion connected to the main body of the tubular column 1.

In a stable state, the three pipe columns 1, 2, and 3 are implemented in a suitable form for constructing the steel column 10 by sequentially adding them upward in such a manner that a part thereof overlaps.
That is, of the pipe posts 1, 2, 3, the lower end outer diameter of the lowermost pipe post 1 is made the largest dimension (about 200 mm in this embodiment), and the upper end outer diameter of the lowermost pipe post 1 (Approx. 185 mm) is slightly smaller than the inner diameter (approximately 190 mm) of the lower end portion of the middle stage tube column 2, and the upper end outer diameter (approximately 150 mm) of the middle stage tube column 2 is the tube column 3 at the uppermost stage The dimensions are slightly smaller than the inner diameter (about 155 mm in the same manner) of the lower end portion of the
The height is about 1.3 m for the pipe column 1 and about 2.3 m for the pipe columns 2 and 3. The height of the assembled steel column 10 is about 5 m, and the two overlapping portions 11a and 12a, And 22a and 13a are both implemented at 0.45 m. Incidentally, the dimensions of the overlapping parts 11a and 12a of the pipe column 1 and the pipe column 2 are about 2 to 3 times the inner diameter of the lower end of the pipe column 2, and the overlapping parts 22a and 13a of the pipe column 2 and the pipe column 3 are About 2-3 times the inner diameter of the lower end portion of the tube column 3 is a standard design.

  The tube columns 1, 2 and 3 are manufactured by shearing steel plates each having a thickness of about 4.2 to 4.5 mm into a predetermined size and shape, bending them into a circular shape by a forming machine, and welding a joint portion There is. The pipe posts 1, 2, 3 according to the illustrated example are implemented as straight pipes (straight) excluding the addition ends 11, 12, 22, and 13, but of course the present invention is not limited to this, and the whole The design can be changed as appropriate, for example, by forming into a tapered shape. Moreover, although illustration is abbreviate | omitted, a scaffold bolt attachment hardware can also be provided and implemented by predetermined spacing on the outer periphery of the said pipe columns 1, 2, 3.

The present invention is characterized in the form of the added ends 11. Specifically, the lower tubular column 1 (or 2) and the upper tubular column 2 are formed by forming the overlapping portions 11a of the respective joining ends 11 of the tubular columns 1, 2, 3 in a polygonal shape in cross section. A major feature is to add (or 3) non-rotatably.
In the illustrated example, the added end portion 11 (or 22) of the lower tubular column 1 (or 2) is a diameter-reduced portion 11b (or 22b) that is tapered downward in a tapered shape and the overlapping portion 11a (or 22a) And the joining end 12 (or 13) of the upper tube column 2 (or 3) is a tapered diameter-expanding portion 12b (or 13b) and the overlapping portion 12a. (Or 13a) are connected in series.
Incidentally, the overlapping portions 11a, 12a, 22a, and 13a of the pipe columns 1, 2, 3 according to the illustrated example are implemented straight (uniform cross-sectional shape). The overlapping portions 11a according to the first embodiment are implemented by forming the cross section into a regular octagonal shape so that FIG. 2 can be easily understood.

  In the first embodiment, as shown in FIG. 2, the cross-sectional shapes of the overlapping portion 22 a of the upper joining end 22 of the tubular column 2 and the overlapping portion 13 a of the downstream joining end 13 of the lower tubular column 3 are both positive. It is formed and implemented as an octagonal, similar nest with a slight gap. Similarly, the cross-sectional shapes of the overlapping part 11a of the upper joining end 11 of the tubular column 1 and the overlapping part 12a of the lower joining end 12 of the tubular column 2 are both regular octagonal and have a slight gap. It is formed and implemented as a nest of shapes. Incidentally, the overlapping portions 11a (uniform cross-sectional shape having a regular octagonal cross section) are formed by press working.

  Therefore, according to the steel assembly pillar 10 according to the first embodiment, when the overlapping portions 11a and 12a (or 22a and 13a) are fitted, the respective apexes of the regular octagonal cross sections mutually engage and can not rotate. Structure can be realized. That is, it is possible to realize a non-rotatable configuration at the same time as the work of adding the lower pipe column 1 (or 2) and the upper pipe column 2 (or 3) is performed. Therefore, it is not necessary to perform processing (for example, bolt connection work) of detent | locking to a superposition | polymerization part (fitting part) at all, and the steel assembly pillar 10 which the construction property at the time of a building pillar improves can be implement | achieved.

The steel assembly pillar 10 of the above-described configuration is constructed on the ground or on the roof of a building. In the case of construction on the ground, generally, the lower part of the lowermost tube pillar 1 is fixed by using the base plate 16 and the anchor bolt 17 as shown in FIG. When building on the roof of the building, although illustration is omitted, after installing the lowermost pipe pillar using the parapet on the roof, the wall of the existing building or water storage building, or the existing frame material such as for mounting a signboard Add and build work in order.
Although the said superposition | polymerization part 11a is formed through the diameter reduction part 11b from the main body of the pipe column 1, step shape (step shape) is carried out from the main body (straight pipe) of the tube 1 without forming the diameter reduction part 11b. It is of course possible to form the polymerization portion 11a on the The same applies to the polymerized portions 12a other than the polymerized portion 11a.
In the embodiment described in this paragraph, the same technical idea is applied to each example described below.

Compared with the first embodiment, the steel assembling column 20 according to the second embodiment shown in FIGS. 4 and 5 has a cross section of each of the overlapping portions 11a, 12a, 22a, and 13a of the tubular columns 1, 2, 3 The only difference is the implementation in a regular tetragon.
That is, in the steel assembling column 20 according to the second embodiment, the cross-sectional shapes of the overlapping portion 22a of the upper joining end 22 of the tubular column 2 and the overlapping portion 13a of the downstream joining end 13 of the lower tubular column 3 are both positive. It is formed and implemented as a quadrilateral and similar nested with a slight gap. Similarly, the cross-sectional shapes of the overlapping portion 11a of the upper joining end 11 of the tubular column 1 and the overlapping portion 12a of the lower joining end 12 of the tubular column 2 are both tetragonal and have a slight gap. It is formed and implemented as a nest of shapes.

  Therefore, according to the steel assembly pillar 20 according to the second embodiment, when the overlapping portions 11a and 12a (or 22a and 13a) are fitted, the respective apexes of the cross-sectionally regular tetragonal mesh with each other, thereby rotating them. Impossible structure can be realized. That is, it is possible to realize a non-rotatable configuration at the same time as the work of adding the lower pipe column 1 (or 2) and the upper pipe column 2 (or 3) is performed. Therefore, as in the first embodiment, there is no need to process the detents (for example, bolt connection work) to the overlapping portion (fitting portion) at all, and the steel assembling column 20 improves the workability at the time of building column Can be realized.

The steel assembly column 30 according to the third embodiment shown in FIGS. 6 and 7 has a cross section of each of the overlapping portions 11a, 12a, 22a and 13a of the tubular columns 1, 2 and 3 in comparison with the first embodiment. The only difference is the implementation with a regular dodecagon.
That is, in the steel assembling column 30 according to the third embodiment, the cross-sectional shapes of the overlapping portion 22a of the upper joining end portion 22 of the tubular column 2 and the overlapping portion 13a of the downstream joining end portion 13 of the tubular column 3 are both positive. It is formed and implemented as a similar shape nested with a dodecagon and with a slight gap. Similarly, the cross-sectional shapes of the overlapping part 11a of the upper joining end 11 of the tubular column 1 and the overlapping part 12a of the lower joining end 12 of the tubular column 2 are both similar to a regular dodecagon and have a slight gap. It is formed and implemented as a nest of shapes.

  Therefore, according to the steel assembly pillar 30 according to the third embodiment, when the overlapping portions 11a and 12a (or 22a and 13a) are fitted, the respective apexes of the cross-sectional regular dodecagons are engaged with each other to rotate them. Impossible structure can be realized. That is, it is possible to realize a non-rotatable configuration at the same time as the work of adding the lower pipe column 1 (or 2) and the upper pipe column 2 (or 3) is performed. Therefore, as in the first and second embodiments described above, it is not necessary to carry out any processing (for example, bolt bonding work) of the detent to the overlapping portion (fitting portion), and steel assembly which improves the workability at the time of construction The pillar 30 can be realized.

The steel assembly column 40 according to the fourth embodiment shown in FIG. 9 and FIG. 10 is, compared with the first embodiment, the overlapping portion of the added end 11 (or 22) of the lower tube column 1 (or 2). 11a (or 22a) is formed so as to be tapered downward in a tapered shape, and the overlapping portion of the added end 12 (or 13) of the upper tubular column 2 (or 3) is downwardly expanded in a tapered manner The only difference is that it is formed.
In short, the steel assembling column 40 according to the fourth embodiment is compared with the steel assembling columns 10, 20, 30 according to the other first to third embodiments, and the overlapping portions 11a ', 12a', 22a ', and 13a. The point that forms' a tapered shape differs greatly.

  Note that, the above-described overlapping portions 11a ′ in the illustrated example are implemented by a type in which the cross-sectional regular octagon of the first embodiment is formed into a tapered shape as an example, but the present invention is of course not limited to this. A polygon can be formed in a tapered shape and implemented. Incidentally, the tubular column 1 and the like having the tapered overlapping portions 11a 'can be easily manufactured by press working in the same manner as the tubular columns 1, 2, and 3 according to the first to third embodiments.

The significance of forming the overlapping portions 11a 'in a tapered shape as in the steel assembly column 40 according to the fourth embodiment will be described.
When the polymerization portions 11a of the first to third embodiments are implemented with a straight (uniform cross sectional shape), an appropriate gap (for example, between the inner pipe and the outer pipe (for example, 11a of the pipe post 1 and 12a of the pipe post 2) If there is no fitting tolerance), there is a possibility that it will not be able to be fitted into a predetermined position, and if the gap is too large, there is a possibility that the backlash may be greatly removed. It will be difficult to realize a structure that fits closely.
In that respect, as in the fourth embodiment, the overlapping portions 11a ′ and 12a ′ (or 22a ′ and 13a ′) to be fitted to each other are formed into a tapered shape as described above to form the tube pillars 1 and 2 (each Or, when 2 and 3) are fitted, the gap formed by the overlapping portions 11a ′ and 12a ′ gradually narrows, and finally, the gap is tightly and tightly fitted without gap, and a structure in which the two are exactly engaged and connected is realized. it can.

However, it is not a good idea to form the overlapping portions 11a '... in an obscene manner, and if the taper (rate) is too loose, the diameter becomes larger and the fitting distance (slide amount) becomes too large, and the taper ( If the ratio is too tight (sudgy angle) and the diameter is too large compared to the amount of sliding, the error can not be absorbed and the meshing force becomes weak easily.
Based on the above, if the taper ratio of the polymerized portions 11a 'is set within a range of 0 to 1/50, the present invention is to realize a meshing (addition) structure having good adhesion and error absorptivity. It is derived from human experience. Furthermore, it is derived from the experience of the applicant that the mesh structure with higher adhesion and error absorption can be realized by setting it in the range of 1/100 to 1/75.

  Therefore, according to the steel assembly pillar 40 according to the fourth embodiment, when the overlapping portions 11a 'and 12a' (or 22a 'and 13a') are fitted, the vertexes of the regular octagonal cross section of each other are the same. In addition to the fact that a non-rotatable structure can be realized by meshing, it is possible to realize a meshing (addition) structure that is extremely excellent in adhesion and error absorption due to the taper effect described above. That is, at the same time as the work of joining the lower pipe column 1 (or 2) and the upper pipe column 2 (or 3) is performed, a non-rotatable structure can be realized easily and precisely. Of course, as in the first to third embodiments, it is not necessary to perform any processing (for example, bolt bonding work) of the detent to the overlapping portion (fitting portion), and the steel assembly which improves the workability at the time of construction The pillar 40 can be realized.

Although the embodiments have been described above with reference to the drawings, the present invention is not limited to the illustrated examples, but includes the scope of design changes and variations of application which those skilled in the art usually perform without departing from the technical concept thereof. I mention that just in case.
For example, the cross-sectional shapes of the overlapping portions 11a of the joining ends 11 of the tubular columns 1, 2 and 3 are regular octagonal, regular tetragonal, and positive 12 as sequentially shown in the first to third embodiments. The present invention is not limited to a square, but may be implemented similarly if it is a regular polygon having four or more and sixteen or less.
However, when implemented as a regular 4n square as shown in Examples 1 to 3 above, as shown in FIGS. 8A to 8C, not only the upper and lower surfaces but also the left and right surfaces become flat, so that the storability, From the viewpoint of handling and transportability, a more rational and superior steel assembly column 10 can be realized. The upper, lower, left, and right flat surfaces can be used as a marker instead of being easy to mechanically determine the direction (directionality) of the pipe columns 1, 2, 3 (especially the pipe column 1 to be fixed first) There is also the advantage of
The significance of making the upper limit of the polygon into the above-mentioned 16-sided polygon is that the polygon (excludes the detent) effect at each vertex of the polygon decreases as the cross-sectional shape approaches a circle when the polygon beyond the 16-sided polygon approaches .

Reference Signs List 1 pipe column 2 pipe column 3 pipe column 10 steel assembling column 11 joint addition end 11a overlap part 11 ′ joint addition end 11 a ′ overlap part 12 joint addition end 12 a overlap part 12 ′ joint addition end 12 a ′ overlap part 13 joint addition end 13a Overlapping portion 13 'Connecting end 13a' Overlapping portion 15 Foundation 16 Base plate 17 Anchor bolt 18 Rising portion 20 Steel assembling column 22 Connecting end 22a Overlapping portion 22 'Connecting end 22a' Overlapping portion 30 Steel assembling column 40 Steel Assembly column

Claims (5)

In a steel construction column formed by joining a plurality of pipe columns so as to partially overlap,
What is claimed is: 1. A steel column as claimed in claim 1, wherein the overlap between the lower end of the lower tubular column and the upper end of the upper tubular column is formed into a non-rotatable cross-sectional polygon.   The connection end portion of the lower tube column is formed by connecting the reduced diameter portion which is tapered downward to the upper side and the overlapping portion, and the connection end portion of the upper tube column is tapered downward The steel assembly column according to claim 1, wherein the diameter-increased diameter portion and the overlapping portion are connected in series.   The overlapping portion at the joining end of the lower tubular column is formed to be tapered downward in diameter, and the overlapping portion at the joining end of the upper tubular column is formed to extend downward in a tapered shape. The steel construction column according to claim 1 or 2, characterized in that:   The steel assembly column according to claim 3, wherein a taper rate of the overlapping portion is set in a range of 0 to 1/50.   The steel cross column according to any one of claims 1 to 4, wherein the cross-sectional polygon is a regular polygon having a quadrangle or more and a hex or less.

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