KR20220098669A - Modular rammed earth wall construction equipment and method embedding modular steel structure - Google Patents

Abstract

A structure construction device according to an embodiment includes: a plurality of vertical support parts installed vertically with the ground; a horizontal support part installed horizontally on top of the vertical support part; a transfer part detachably coupled to an upper part of the horizontal support part; and a work part moving in a horizontal direction along the transfer part, wherein the work part repeatedly performs formwork installation, construction material supply, and compaction work so that the vertical support part is buried. The vertical support part may extend in a vertical direction so that the transfer part and the work part are lifted after one layer is completed. An objective according to one embodiment is to exclude minute deviations that occur during mechanism operation by utilizing modular steel frames as temporary devices and gantry.

Description

Modular rammed earth wall construction equipment and method embedding modular steel structure including the same

A modular steel frame and a structure construction apparatus including the same are disclosed. Specifically, a construction construction apparatus including a modular steel frame used as a temporary material and embedded in the construction is disclosed.

Since earthen construction is structurally safe, easy to obtain building materials, and has little impact on the environment, the importance of earthen construction and interest in modernization is increasing worldwide in recent years. Such a soil construction can be constructed using a method called compaction of soil or a wall frame method. The traditional wall frame method consists of installing a form, pouring loess, and then drying the loess after removing the form like curing concrete. . In other words, unlike the composite structure (steel-reinforced concrete) that generally uses steel frames as the load-bearing frame of the structure, the wall of the dam is itself a column and plays the role of a wall.

The above-mentioned background art is possessed or acquired by the inventor in the process of deriving the disclosure of the present application, and it cannot necessarily be said to be a known technology disclosed to the general public prior to the present application.

Republic of Korea Patent Publication No. 10-2013-0141791

An object according to an embodiment is to exclude micro-deviations that occur during instrument operation by using a modular steel frame as a temporary device and a gantry.

An object according to an embodiment is to automatically control the dam frame equipment including the formwork and the compactor to be transferred to the correct spatial coordinates by remote operation.

An object according to an embodiment is to reinforce the seismic performance of the compacted earthen wall by embedding it in the compacted earthen wall after using the modular steel frame as vertical and horizontal temporary materials of the gantry.

An object according to an embodiment is to improve the structural stability, design flexibility, and construction convenience of the compacted soil wall.

An object according to an embodiment is to exclude interference that occurs in a transport path during operation of a damtle equipment including a formwork and a compactor.

An object according to an embodiment is to improve the adhesion performance so that the compacted soil wall and the steel frame are integrated.

An object according to an embodiment is to improve workability so that soil compaction by automatic control is possible by using a modular square compaction hammer by converting an H-shaped steel into a square-shaped steel.

The problems to be solved in the embodiments are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

Building construction apparatus according to an embodiment for achieving the above object, a plurality of vertical support parts installed perpendicular to the ground; a horizontal support part installed horizontally on the upper part of the vertical support part; a transfer unit detachably coupled to an upper portion of the horizontal support unit; and a work unit moving in a horizontal direction along the transfer unit, wherein the work unit repeatedly performs formwork installation, building material supply, and compaction work so that the vertical support unit is buried, and the vertical support unit after one layer is completed The transfer unit and the working unit may extend in a vertical direction to be raised.

According to one side, the vertical support portion, the first support member having an H-shaped cross section; a second support member coupled to an end of the first support member; and a third support member coupled to a side surface of the first support member, wherein a plurality of through holes are formed in the second support member to be fastened with bolts for extending and assembling the first support member, The third supporting member may be formed in a shape to fill the gap of the first supporting member, so that the first supporting member, the second supporting member, and the third supporting member may be coupled to each other in a rectangular pole shape.

According to one side, the second support member and the third support member is formed with a groove for accommodating the head of the bolt, the groove is formed to match the shape of the head so that the bolt does not rotate when the bolt is fastened. The head can be constrained.

According to one side, the vertical support part further includes a fourth support member installed on the first support member and the third support member, and the fourth support member horizontally supports the first support member and the third support member at the same time. It is installed to penetrate in the direction to integrate the first support member and the third support member, and is embedded in the side wall of the structure to reinforce the structure.

According to one side, the building construction apparatus further includes a reinforcing part installed under the horizontal support part, the reinforcement part, a reinforcing member for supporting the horizontal support part; an adjusting member for correcting the horizontality of the horizontal support part by adjusting the height of the reinforcing member; a driving member for moving the reinforcing member; and a fixing member for fixing the reinforcing member or the vertical support unit.

A modular steel frame according to an embodiment for achieving the above object, a first support member consisting of a web and a flange forming an H-shape; a second support member coupled to an end of the first support member; and a third support member coupled to be accommodated in the gap formed by the web and the flange of the first support member; can

According to one side, the second support member has a plurality of through-holes formed so that a bolt for extending and assembling the first support member is fastened, and the second support member partially accommodates the head of the bolt at a lower portion. A groove may be formed.

According to one side, the second support member may be coupled to both ends of the first support member, respectively, and a plurality of the modular steel frames may extend in the vertical direction by coupling each of the second support members together with a bolt. have.

According to one side, the third support member has an upper end formed of a solid square plate, the solid square plate is formed with a groove for accommodating the head of the bolt, the groove is formed to match the shape of the head, the bolt can be constrained so that it does not rotate.

According to the apparatus for constructing a structure including a modular steel frame according to an embodiment, there is an effect of excluding fine deviations occurring during the operation of the mechanism by using the modular steel frame as a temporary device and a gantry.

According to the apparatus for constructing a structure including a modular steel frame according to an embodiment, there is an effect of automatically controlling the wall equipment including the formwork and the compactor to be transferred to the correct spatial coordinates by remote operation.

According to the apparatus for constructing a structure including a modular steel frame according to an embodiment, there is an effect of reinforcing the seismic performance of the compacted soil wall by embedding it in the compacted soil wall after using the modular steel frame as vertical and horizontal temporary materials of the gantry.

According to the apparatus for constructing a structure including a modular steel frame according to an embodiment, there is an effect of improving the structural stability of the compacted soil wall, design flexibility, and construction convenience.

According to the apparatus for constructing a structure including a modular steel frame according to an embodiment, there is an effect of excluding interference that occurs in the transport path during the operation of the wall equipment including the formwork and the compactor.

According to the apparatus for constructing a building including a modular steel frame according to an embodiment, there is an effect of improving the attachment performance so that the compacted soil wall and the steel frame are integrated.

An object according to an embodiment is to improve workability so that soil compaction by automatic control is possible by using a modular square compaction hammer by converting an H-shaped steel into a square-shaped steel.

The effect of the building construction apparatus including the modular steel frame according to an embodiment is not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

1 is a perspective view of a building construction apparatus including a modular steel frame according to an embodiment.
Figure 2 is a front view of the building construction apparatus including a modular steel frame according to an embodiment.
3 is an exploded view of a modular steel frame according to an embodiment.
Figure 4 shows a modular steel frame according to an assembled embodiment.
Figure 5 shows the third support member of the modular steel frame.
6 is a longitudinal cross-sectional view of a modular steel frame according to an embodiment.
7 shows a modular steel frame according to an extended embodiment.
Figure 8 shows a modular steel frame coupled to the fourth support member.
9 is a side view of an apparatus for constructing a structure including a modular steel frame according to an embodiment.
Figure 10 shows the coordinates of the ground on which the building is constructed using the building construction apparatus including the modular steel frame according to an embodiment.
The following drawings attached to the present specification illustrate a preferred embodiment of the present invention, and serve to further understand the technical spirit of the present invention together with the detailed description of the present invention, so the present invention is limited to the matters described in those drawings It should not be construed as being limited.

Hereinafter, embodiments will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in the description of the embodiment, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, or order of the elements are not limited by the terms. When it is described that a component is “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but between each component another component It will be understood that may also be "connected", "coupled" or "connected".

Components included in one embodiment and components having a common function will be described using the same names in other embodiments. Unless otherwise stated, descriptions described in one embodiment may be applied to other embodiments as well, and detailed descriptions within the overlapping range will be omitted.

1 is a perspective view of a building construction apparatus 10 including a modular steel frame 100 according to an embodiment.

2 is a front view of the building construction apparatus 10 including the modular steel frame 100 according to an embodiment.

1 and 2, the building construction apparatus 10 according to an embodiment is a vertical support part 100, a horizontal support part 200, a transfer part 300, a work part 400 and a reinforcement part 500. may include.

The vertical support unit 100 may be installed perpendicularly to the ground. A plurality of vertical support units 100 may be provided. For example, the plurality of vertical support parts 100 may be disposed adjacent to each corner of a rectangular area to be constructed. Such a vertical support part 100 may be a steel frame coupled in a modular manner. In order to raise the transfer unit 300 and the work unit 400 after one layer of the building structure (C) is completed, the vertical support unit 100 may extend in a vertical direction.

The horizontal support part 200 may be installed horizontally on the upper part of the vertical support part 100 . For example, the horizontal support part 200 may be installed so that each end is coupled to the upper portion of the at least two vertical support parts 100 , respectively. The horizontal support unit 200 may correct the vertical step difference.

The transfer unit 300 may be detachably coupled to the upper portion of the horizontal support unit 200 . As shown in FIG. 2 , the transfer unit 300 may be formed in a U-shape. The transfer unit 300 may be provided as, for example, a gantry. The horizontal member of the transfer unit 300 may be installed in a shape that protrudes more outward than the interval of the vertical support unit 100 so that the work unit 400 can secure the work clearance.

The work unit 400 may be movably installed in the transfer unit 300 . For example, the work unit 400 may be installed on a horizontal member of the transfer unit 300 to move in a horizontal direction. Such a work unit 400 may include a formwork and a compactor, and may install a formwork, supply a building material in the formwork, and compact the material placed in the formwork. At this time, the work unit 400 may perform an operation so that the vertical support unit 100 is embedded in the building material.

The reinforcement part 500 may be installed under the horizontal support part 200 . The reinforcing unit 500 is adjustable in height, and is provided as a non-directional autonomous driving device and can be moved independently. The reinforcement part 500 will be described in more detail with reference to FIG. 9 .

In the above-described construction construction apparatus 10 , the vertical support part 100 is provided with a modular steel frame, and thus the dimensional stability is high, and thus the formwork and the compactor of the working part 400 can be positioned very precisely. Accordingly, the compaction operation can be performed by automatically controlling the mechanisms of the operation unit 400 without the operator being involved in the periphery of the vertical support unit 100 .

In addition, it is possible to move the position while securing precise dimensional stability because it operates automatically only in the closed U-shaped inner space. In addition, the horizontal and vertical spans of the transfer unit 300 are not limited to specific dimensions.

In addition, in order to reinforce and install the buttress in a direction perpendicular to the compacted soil wall unit to be constructed, the reinforcement part 500 may be erected and reinforced in a perpendicular direction. In this case, two reinforcing units 500 can be installed in both directions. When such a reinforcing part 500 is used, the horizontal support part 200 may be installed so that height interference does not occur when the conveying part 300 is raised on the upper part.

In addition, the joint portion with the transfer unit 300 may have a margin in the bolt hole to accommodate the construction deviation, and strong bonding (friction bonding) may be applied.

Hereinafter, with reference to FIGS. 3 to 8 , the vertical support part 100 which is a modular steel frame will be described in more detail.

3 is an exploded view of the modular steel frame 100 according to an embodiment.

Figure 4 shows the modular steel frame 100 according to an assembled embodiment.

5 shows the third support member 103 of the modular steel frame 100 .

6 is a longitudinal cross-sectional view of the modular steel frame 100 according to an embodiment.

7 shows a modular steel frame 100 according to an extended embodiment.

8 shows a modular steel frame 100 coupled to the fourth support member 104 .

Referring to FIG. 3 , the vertical support part 100 may include a first support member 101 , a second support member 102 , and a third support member 103 .

The first support member 101 is composed of a web and a flange, and may have an H-shaped cross section. For example, the first support member 101 may be an H-shaped steel. In addition, the length of the first support member 101 can be freely adjusted within the weight that can be handled by the operator. In addition, the first support member 101 may be a criterion for distinguishing one stage of the structure (C) to be constructed for each layer.

The second support member 102 is provided as a square plate, and may be coupled to an end of the first support member 101 . For example, a plurality of second support members 102 may be provided to be coupled to both ends of the first support member 101 . The second support member 102 may have a plurality of through-holes, for example, four through-holes. Bolts may be respectively fastened to the through holes, which enables coupling of the vertical support parts 100 ′ provided with another modular steel frame to extend the existing vertical support parts 100 in the vertical direction. The existing vertical support part 100 and the extended vertical support part 100 ′ are coupled with a bolt B, and a part of the bolt head engages the third support member 103 before the second support of the existing vertical support part 100 . Line embedded in member 102 .

The third support member 103 may be coupled to a side surface of the first support member 101 . The third support member 103 is coupled to change the shape of the first support member 101 . In the gap surrounded by the flange (P) and the web (W) of the first support member 101 made of H-shaped steel, it is difficult for the building material to be evenly cast by machine, and the working part 400 is placed between the gaps with a compaction hammer There may be spatial limitations in performing compaction work by placing the Accordingly, the third support member 103 can change the shape of the H-shaped steel into the square-shaped steel by filling the gap formed between the flanges of the first supporting member 101 with the U-shaped steel. In addition, a plurality of third support members 103 may be provided so that one or more third support members 103 may be coupled along the longitudinal direction of the first support member 101 .

As a result, as shown in FIG. 4 , the above-described third support member 103 is coupled to fill the voids on both sides of the first support member 101 , and the second support member 102 is provided with the first support member 101 . By being coupled to both ends of the member 101, it is possible to configure the modular steel frame 100 in the form of a square column. Accordingly, the modular steel frame 100 can be converted into a shape that can be operated with an autonomous automatic compactor, and adhesion can be improved so as to be integrated with the compacted soil wall.

In addition, with reference to FIGS. 3 and 5 , the third support member 103 may partially accommodate the head of the bolt B fastened to the second support member 102 . To this end, the upper end of the third support member 103 may be formed in an M-shape. For example, one end of the third support member 103 may be formed with a groove having a shape corresponding to the shape of the hexagonal bolt (B) head. In FIG. 3 , the third support member 103 is illustrated as having an empty interior, but a solid square plate may be formed on the upper end of the third support member 103 . This solid square plate can be formed with a concave groove in a shape and depth to accommodate the bolt (B) head. This groove may be formed in a closed structure so that the bolt (B) does not fall downward after fastening.

Such a groove may also be formed on one surface of the second support member 102 . That is, a groove having a shape matching the shape of the head of the bolt B is formed on one surface of the second support member 102 , and the head of the bolt B may be partially accommodated in the groove. 6, the second support member 102 and the third support member 103 jointly accommodate the head of the bolt B, the bolt B is fastened and the third support member 103 may be constrained so as not to rotate any more in a state coupled to the first support member 101 .

As described above, the first support member 101, the second support member 102, and the third support member (103, omitted in FIG. 7) are combined to form a modular steel frame 100 in the shape of a quadrangular pole is shown in Fig. As shown in 7, it can be extended in the vertical direction in combination with another modular steel frame 100'. At this time, the bolt (B) coupled to the upper second support member 102 of the modular steel frame 100 has a protruding body to penetrate the lower second support member 102 ′ of the modular steel frame 100 ′. have. The bolt (B) passing through the second support member 102' is fastened with a nut so that the modular steel frame 100 and the modular steel frame 100' can be extended and coupled in a vertical direction. In this way, the building construction apparatus 10 according to an embodiment can extend the rectangular steel pipe-shaped modular steel frame 100 by using bolts according to the desired height of the building while maintaining the rod-free shape.

In the above-described modular steel frame 100, after the lower 2/3 of the first-stage compacted soil wall is completed, anchor bolts (4 pieces) are attached to the upper second support member 102 of the buried first support member 101 . can be garbled. At this time, the anchor bolt (B) can be temporarily assembled so that the bolt (B) does not fall downward by fastening the nut. Then, the third support member 103 may be inserted into the upper gap that is the remaining 1/3 of the first support member 101 . Accordingly, even if the nut is removed, a solid square plate having a concave groove for accommodating the head of the bolt B on the upper end of the third support member 103 is constrained so that the bolt B does not fall downward. In addition, since half of the head of the bolt (B) is embedded in the groove of the second support member 102 engraved in advance, and the other half penetrates into the upper groove of the intaglio third support member 103, the impact wrench is It is possible to prevent the rotation of the bolt (B) when assembling the two-stage vertical support part 100 using. The head of the anchor bolt (B) is always fastened to the upper second support member 102 of the first-stage vertical support part 100, and the nut is attached to the lower second support member 102' of the two-stage vertical support part 100'. can be tightened Since the vertical support part 100 constructs the structure C after first constructing the anchor bolt (B), the upper wall can be successively constructed while securing the seamlessness of the pre-constructed wall in which the vertical support part 100 is embedded. have. The vertical support part 100 of such a structure can achieve the effect of line construction of the anchor bolt (B).

Referring to FIG. 8 , the vertical support part 100 may further include a fourth support member 104 .

The fourth support member 104 may be installed on the first support member 101 (not shown in FIG. 8 ) and the third support member 103 . For example, the fourth support member 104 may be provided with reinforcing bars. A plurality of holes through which the fourth support member 104 can pass may be formed in the web (W) and the flange (P) of the first support member 101 and the third support member 103 described above. In this case, the location of the hole is selected in consideration of workability, but may be formed anywhere along the longitudinal direction of the first support member 101 . For example, if provided at the top of the first support member 101 and the third support member 103 in order to reduce the number of worker involvement, it is possible to install the anchor bolt (B) at the same time as the fixing operation.

Through the plurality of holes, the fourth support member 104 may be installed to simultaneously pass through the first support member 101 and the third support member 103 in the horizontal direction. That is, the fourth support member 104 may connect the first support member 101 and the third support member 103 at the same time. At this time, it is possible to minimize operator involvement by assembling the round-through nut and the cover assembly screw. In addition, the fourth support member 104 protruding from the first support member 101 and the third support member 103 is embedded in the sidewall of the structure C and integrated with the structure, and the structure and the vertical support unit 100 are combined. It can be reinforced to make it more robust.

9 is a side view of the building construction apparatus 10 including the modular steel frame 100 according to an embodiment.

Referring to FIG. 9 , the reinforcing unit 500 may include a reinforcing member 501 , an adjusting member 502 , a driving member 503 , and a fixing member 504 .

A plurality of reinforcing members 501 may be provided and vertically disposed between the ground and the horizontal support unit 200 . The reinforcing member 501 may be disposed to contact the lower surface of the horizontal support part 200 to support the horizontal support part 200 .

The adjusting member 502 is located at the lower end of the reinforcing member 501 and may be integrated with the reinforcing member 501 . The adjustment member 502 can adjust the height of the reinforcing member 501 . That is, the adjustment member 502 can easily correct the horizontal construction deviation of the horizontal support unit 200 by adjusting the height deviation of the plurality of reinforcing members 501 .

The driving member 503 may be mounted under the reinforcing member 501 and the adjusting member 502 . The driving member 503 may be driven to move the reinforcing member 501 and the adjusting member 502 . For example, the driving member 503 is provided as a non-directional autonomous driving device to enable independent positional movement when the position of the reinforcing part 500 needs to be moved for construction.

The fixing member 504 may fix the reinforcing member 501 or the vertical support part 100 . The fixing member 504 may be provided as a detachable outrigger, for example. The fixing member 504 may be used to fix the horizontal support part 200 by the reinforcing member 501 or the vertical support part 100 after it is secured.

The order of constructing the compacted soil wall using the building construction apparatus 10 including the modular steel frame 100 according to the above-described embodiment is as follows.

1. Anchor the first support member 101 constituting the first-stage vertical support part 100 to the floor slab.

2. The second support member 102 and the anchor bolt (B) are pre-assembled on the upper part of the first support member 101, and the third support member 103 is coupled.

3. The horizontal support part 200 is coupled to the second support member 102 , and the reinforcement part 500 is installed under the horizontal support part 200 .

4. The transfer unit 300 is pulled up and coupled to the upper part of the horizontal support unit 200 .

5. Drive the work unit 400 to complete the first stage soil wall. At this time, the compacted soil wall is completed up to the upper end of the second supporting member 102 on both sides as shown in FIG. 2 . In addition, the vertical support part 100 is embedded in the compacted soil wall.

6. After the first stage soil wall is completed, the coupling of the transfer unit 300 is dismantled.

7. The horizontal support part 200 and the reinforcement part 500 are disassembled.

8. The two-stage vertical support part 100 is coupled to the upper part of the first-stage vertical support part 100 using the anchor bolts (B) embedded in the line in the second support member 102 of the first-stage vertical support part 100 .

9. The transfer unit 300 is coupled to the upper part of the two-stage vertical support unit 100 .

10. Drive the work unit 400 to construct a two-stage compacted soil wall.

In the structure constructed by the above-described method, both ends of the unit soil wall may be changed by the internal horizontal span of the transfer unit 300 .

In addition, as shown in FIG. 9 , if the building construction apparatus according to an embodiment is used, a compacted soil wall larger than the vertical support part 100 is constructed, and the vertical support part 100 can be embedded as an endoskeleton.

In addition, it is possible to adjust the position of the construction joint of the unit soil wall by adjusting the position of the side plate of the work unit 400 .

FIG. 10 shows the ground where the building C is constructed using the building construction apparatus 10 including the modular steel frame 100 according to an embodiment as coordinates.

Referring to FIG. 10 , a method of constructing a structure C using the structure construction apparatus 10 including the modular steel frame 100 according to an embodiment can be described with coordinates as follows.

1. Install three vertical supports 100 at (X1, Y1), (X2, Y1) and (X1, Y2), and (X1, Y1) and (X1, Y2) of the vertical support unit 100 located at (X1, Y2) Assemble the horizontal support part 200 on the upper part.

2. Assemble the transfer part 300 to the upper second support member 102 of the vertical support part 100 positioned at (X1, Y1) and (X2, Y1). At this time, one side is constrained to the frame constituting the right-angled wall to secure the structural stability of the transfer unit 300 .

3. After the compacted soil wall spanning (X1, Y1) and (X2, Y1) is completed, complete the compacted soil wall between (X1, Y1) and (X1, Y2).

4. When constructing the compacted soil wall of the (X2, Y1) and (X3 Y1) spans, the vertical support 100 already located at (X2, Y1) is embedded in the compacted soil wall to further reinforce the bearing capacity.

5. Reinforce the isolated independent vertical support part 100 by installing the following temporary temporary fixing member 504 on the vertical support part 100 .

As described above, the building construction apparatus 10 including the modular steel frame 100 according to an embodiment can secure the dimensional accuracy and uniform quality of the compacted soil wall by excluding the stroke deviation of the wall equipment.

In addition, in the building construction apparatus 10 according to an embodiment, the vertical support part 100 or the horizontal support part 200 may be used as a gantry temporary material of the work part 400 when the compacted soil wall is constructed, and after construction, the compacted soil wall It can be used as a reinforcing material embedded inside to improve the seismic performance of the structure.

In addition, the building construction apparatus 10 according to an embodiment minimizes interference with the running and transport of the vertical support unit 100 and the work unit 400 to construct the compacted soil wall. make application possible. Accordingly, it is possible to reduce the time and cost required for the hypothesis.

As described above, the embodiment of the present invention has been described with specific matters such as specific components and limited embodiments and drawings, but these are only provided to help a more general understanding of the present invention, and the present invention is limited to the above embodiments Various modifications and variations are possible from these descriptions by those of ordinary skill in the art to which the present invention pertains. For example, the described techniques are performed in an order different from the described method, and/or components of the described structures, devices, etc. are combined or combined in a different form than the described method, or other components or equivalents Appropriate results can be achieved even if substituted or substituted by Therefore, the spirit of the present invention should not be limited to the described embodiments, and not only the claims to be described later, but also all those with equivalent or equivalent modifications to the claims will be said to belong to the scope of the spirit of the present invention. .

10: building construction device
100: vertical support
101: first support member
102: second support member
103: third support member
104: fourth support member
200: horizontal support
300: transfer unit
400: work unit
500: reinforcement
501: reinforcing member
502: adjustment member
503: driving member
504: fixing member

Claims (3)

A first support member consisting of a web and a flange forming an H-shape;
a second support member coupled to an end of the first support member; and
a third support member coupled to be accommodated in the gap formed by the web and the flange of the first support member;
including,
The first support member, the second support member, and the third support member are integrated in the shape of a square pillar,
The third support member has an upper end formed of a solid square plate,
The solid square plate is formed with a groove for accommodating the head of the bolt,
The groove is formed to match the shape of the head to constrain the bolt from rotating, modular steel frame.
The method of claim 1,
The second support member is formed with a plurality of through-holes, bolts for assembling the extension of the first support member are fastened;
The second support member is a modular steel frame in which a groove for partially accommodating the head of the bolt is formed in the lower portion.
According to claim 1,
The second support member is coupled to both ends of the first support member, respectively,
A plurality of the modular steel frames extend in the vertical direction by coupling each of the second support members together with bolts.

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