Concrete-filled tube column structure and manufacturing and constructing method thereof

Abstract

A concrete-filled tube column structure according to an embodiment may comprise: an angular plate tube column structure having an inner space filled with concrete; a center member installed in the inner space along the longitudinal direction of the plate tube column structure; and a rebar fixing member installed between the plate tube column structure and the center member. Multiple rebars may be disposed in the inner space and adjacent to the corners of the plate tube column structure. The rebar fixing member may be formed in an octagonal shape. At least two sides of the rebar fixing member may be fixed to the center member to fix the position of the multiple rebars.

Description

Concrete-filled columns and their manufacturing and construction methods

[0001] Concrete filled columns are initiated.

[0002] Concrete Filled Tube Column Structure is a composite column that improves the strength and rigidity of the column by filling concrete inside a steel tube. It has been applied to columns that constitute the lower floors or basements of buildings that are subject to high axial forces.

[0003] The existing S-LFC technology has difficulty in arranging corner reinforcement, so it is designed to reduce the effective cross-sectional area of ​​the column. This causes the column cross-sectional area to be designed larger than necessary when designing long columns.

[0004] The background technology described above is technology that the inventor possessed or acquired during the process of deriving the present invention, and cannot necessarily be said to be a publicly known technology disclosed to the general public prior to the application for the present invention.

[0005] Prior art document: U.S. Patent Publication No. 6,123,485 (published September 26, 2000)

[0006] The purpose of one embodiment is to devise a method for designing using the entire cross-sectional area of ​​the column, thereby providing a concrete-filled column and a method for manufacturing the same, which enables the design of a long column with an optimal cross-sectional size relative to its size in the Triple FAB of the effective cross-sectional area design of the existing S-LFC.

[0007] 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 description below.

[0008] According to one embodiment of the present invention for achieving the above object, a concrete-filled column comprises: a square plate column having an internal space filled with concrete; a central member installed in the internal space along the longitudinal direction of the plate column; and a reinforcing bar fixing member installed between the plate column and the central member; wherein a plurality of reinforcing bars are arranged in the internal space adjacent to corners of the plate column, the reinforcing bar fixing member is formed in an octagonal shape, and at least two sides of the reinforcing bar fixing member are fixed to the central member to fix positions of the plurality of reinforcing bars.

[0009] According to one aspect, the plate column is formed in a square shape and may further include a corner reinforcement member arranged to form a corner space at each corner of the plate column.

[0010] According to one aspect, the invention further includes a fixing bar arranged in the corner space, and the fixing bar can be formed to fix the positions of a plurality of reinforcing bars arranged between the plate column and the corner reinforcing member.

[0011] According to one aspect, the fixed bar is formed in a U shape, a bent portion of the fixed bar is positioned adjacent to an edge of the plate pillar, and both ends of the fixed bar can extend toward the central member.

[0012] According to one side, the plate column can be separated into four “L” shaped plates, and each “L” shaped plate can be pre-assembled with the fixing bar and the plurality of reinforcing bars.

[0013] According to one aspect, the corner reinforcement member or the fixing bar may be formed at predetermined intervals along the length direction of the plate column.

[0014] According to one side, the central member includes a plurality of column steel frames formed at the edge of the internal space and each of which is positioned at the center of each side of the plate column; and a connecting steel frame having both ends connected to the column steel frame; wherein the column steel frame is formed along the longitudinal direction of the plate column, and the connecting steel frame can be formed at predetermined intervals along the longitudinal direction of the plate column.

[0015] According to one aspect, the concrete-filled column may further include a spacing member formed between the column steel frame and the plate column.

[0016] According to one side, the spacing member is a “ㄷ” shaped steel or a “T” shaped steel, and the plate column can be connected to a flange of the “ㄷ” shaped steel or a “T” shaped steel.

[0017] According to one embodiment of the present invention for achieving the above object, a method for manufacturing a concrete-filled column comprises: a plate column having an internal space filled with concrete and separable into a plurality of "L"-shaped plates; a central member installed in the internal space along the longitudinal direction of the plate column; and an octagonal reinforcing bar fixing member installed between the plate column and the central member; the method comprising the steps of: manufacturing the plate column by pre-assembling a U-shaped fixing bar having a bent portion disposed adjacent to a corner of the plate column and both ends extending toward the central member, and a plurality of reinforcing bars whose positions are fixed by the bent portion, onto the plate; welding the central member and the reinforcing bar fixing member; assembling reinforcing bars by arranging them at each corner of the reinforcing bar fixing member; performing a face covering operation by joining the plurality of pre-assembled plates to the central member, respectively; turning the central member; performing a face covering operation by joining the remaining plurality of plates so that the central member is surrounded by the plate column; It may include a step of welding the joint where the plates are in contact with each other; and a step of short-coating the plate pillar.

[0018] According to a concrete-filled column and a method for manufacturing the same according to one embodiment, a method is devised that can be designed using the entire cross-sectional area of ​​the column, so that a long column can be designed with an optimal cross-sectional size compared to the size in the Triple FAB design of the effective cross-sectional area of ​​the existing S-LFC.

[0019] The effects of the concrete-filled column and the method for manufacturing the same according to one embodiment are 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.

[0020] FIG. 1 is a cross-sectional view of a concrete filled column according to one embodiment.

[0021] Figure 2 is a cross-sectional view of a concrete filled column according to one embodiment equipped with a fixing bar.

[0022] Figure 3 is a cross-sectional view of a concrete filled column according to another embodiment.

[0023] Figure 4 is a flowchart of a method for manufacturing a concrete filled column according to one embodiment.

[0024] Figures 5a and 5b show the manufacturing process of the concrete-filled column of Figure 4.

[0025] The following drawings attached to this specification illustrate a preferred embodiment of the present invention and, together with the detailed description of the invention, serve to further understand the technical idea of ​​the present invention, and therefore, the present invention should not be interpreted as being limited to matters described in such drawings.

[0026] Hereinafter, embodiments are described in detail with illustrative drawings. When designating components in each drawing, it should be noted that, where possible, identical components are given identical reference numerals, even if they appear in different drawings. Furthermore, when describing embodiments, detailed descriptions of related known structures or functions are omitted if they are deemed to hinder understanding of the embodiments.

[0027] Additionally, terms such as first, second, A, B, (a), (b), etc. may be used to describe components of the embodiments. These terms are only intended to distinguish the components from other components, and the nature, order, or sequence of the components are not limited by the terms. When a component is described as being "connected," "coupled," or "connected" to another component, it should be understood that the component may be directly connected or connected to the other component, but another component may also be "connected," "coupled," or "connected" between each component.

[0028] Components included in one embodiment and components with common functions will be described using the same names in other embodiments. Unless otherwise stated, the descriptions given in one embodiment may also apply to other embodiments, and detailed descriptions will be omitted to the extent of overlap.

[0029]

[0030] Figure 1 is a cross-sectional view of a concrete filled column (10) according to one embodiment.

[0031] Figure 2 is a cross-sectional view of a concrete filled column (10) according to one embodiment equipped with a fixing bar (600).

[0032] Referring to FIG. 1, a concrete filled column (10) according to one embodiment may include a plate column (100), a central member (200), and a fixing member (300).

[0033] The plate column (100) can have an internal space (110) filled with concrete. The plate column (100) can be formed in a square shape. The plate column (100) can be formed in a square shape, for example.

[0034] The plate column (100) is formed by a plate, and the plate can be any material that has rigidity and elasticity, but it is preferable to form it by steel.

[0035] The inner space (110) is a space filled with concrete, and accordingly, the plate column (100) can function as a permanent formwork.

[0036] Accordingly, the concrete-filled column (10) according to one embodiment of the present invention does not require the formation of a separate formwork, and can complete the formation of the column of the structure by only performing the process of filling concrete into the internal space (110) of the plate column (100). Accordingly, the construction period can be drastically shortened, and thus, it can be highly useful at construction sites requiring ultra-short construction periods.

[0037] The central member (200) can be installed in the internal space (110) along the longitudinal direction of the plate column (100).

[0038] The central member (200) may include a column steel frame (210) and a connecting steel frame (220).

[0039] The steel column (210) can be formed in multiple numbers at the edge of the internal space (110).

[0040] The connecting steel frame (220) can be connected at both ends to the column steel frame (210).

[0041] The central member (200) is a component that resists loads such as axial force and moment applied during construction of a concrete-filled column or use of a completed column, and can be formed, for example, as an H-beam.

[0042] The column steel frame (210) is formed along the longitudinal direction of the plate column (100) and may be formed by connecting a plurality of H-beams. It is preferable, from the viewpoint of structural stability, that the column steel frame (210) be formed symmetrically with respect to the center of the internal space (110). As illustrated in Fig. 1, the column steel frame (210) may be positioned at the center of each side of the square plate column (100).

[0043] The connecting steel frame (220) is connected at both ends to two opposing column steel frames (210) and can be formed at predetermined intervals along the length of the plate column (100).

[0044] The connecting steel frame (220) supports the load applied to the column steel frame (210) and also plays a role in fixing the column steel frame (210) so that it does not come off from the formation position.

[0045] At this time, each connecting steel frame (220) may be provided in the shape of two H-beams intersecting in a cross shape, and at this time, one H-beam constituting the connecting steel frame (220) may be arranged so that both ends are connected to two opposing column steel frames (210), and the other H-beam may be arranged so that both ends are connected to the remaining two column steel frames (210). In addition, a plurality of cross-shaped connecting steel frames (220) may be provided and arranged alternately at predetermined intervals along the length direction of the plate column (100).

[0046]

[0047] A reinforcing bar fixing member (300) may be installed between a plate column (100) and a central member (200). The reinforcing bar fixing member (300) may be formed in an octagonal shape. At least two sides of the reinforcing bar fixing member (300) may be fixed to the central member (200). This reinforcing bar fixing member (300) may fix the positions of a plurality of reinforcing bars (400) arranged in an internal space (110).

[0048] In the internal space (110), a plurality of reinforcing bars (400) may be arranged adjacent to the corners of the plate column (100). For example, the plurality of reinforcing bars (400) may be arranged at positions corresponding to the corners of the reinforcing bar fixing member (300) as illustrated in FIG. 1.

[0049] Since the plurality of reinforcing bars (400) resist the axial force and moment applied to the concrete-filled column (10) together with the central member (200), the inclusion of the plurality of reinforcing bars (400) can have the effect of contributing to the structural safety of the concrete-filled column (10).

[0050] Referring again to FIG. 1, the concrete filled column (10) according to one embodiment may further include a corner reinforcing member (500).

[0051] The corner reinforcement member (500) may be arranged at the corner side of the internal space (110) formed in a square shape by the shape of the plate column (100). Accordingly, the corner reinforcement member (500) may form a corner space (120). That is, the corner space (120) may be formed between the plate column (100) and the corner reinforcement member (500). In addition, the corner reinforcement member (500) may be formed in multiple pieces to form a corner space (120) at each corner of the plate column (100). The corner reinforcement member (500) may resist lateral pressure applied to the plate column (100) by concrete filled in the internal space (110).

[0052] Additionally, corner reinforcement members (500) can be formed at predetermined intervals along the length of the plate column (100). Accordingly, the reinforcement effect of the corner portion can be maximized.

[0053] Referring to FIG. 2, a concrete filled column (10) according to one embodiment may further include a fixing bar (600).

[0054] A fixing bar (600) may be placed in the corner space (120). A plurality of reinforcing bars (700) may be further placed in the corner space (120). The fixing bar (600) may be formed to fix the positions of the plurality of reinforcing bars (700).

[0055] For example, the fixed bar (600) may be formed in a U shape. At this time, the bent portion of the fixed bar (600) may be placed in the corner space (120) adjacent to the corner of the plate column (100). Both ends of the fixed bar (600) may be extended toward the central member (200) and placed in the internal space (110).

[0056] These fixed bars (600) and multiple reinforcing bars (700) can be pre-assembled on a plate column (100). The square plate column (100) can be separated into four “L” shaped plates. As shown in Fig. 2, one fixed bar (600) and three reinforcing bars (700) can be pre-assembled on each “L” shaped plate.

[0057] Accordingly, the concrete-filled column (10) according to one embodiment enables the arrangement of reinforcing bars (700) in the plate column (100), and the plate column (100) and reinforcing bars (700) can be integrated using the fixing bar (600). Accordingly, there is an advantage in that there is no need to design by reducing the effective cross-sectional area of ​​the column (10) when filling with concrete. That is, since the design can be performed using the shear area of ​​the column (10), there is an effect in that the design can be performed by optimally securing the effective cross-sectional area relative to the size of the column (10) without expanding the cross-sectional area of ​​the column (10) more than necessary.

[0058] The aforementioned corner reinforcement member (500) or fixing bar (600) may be formed at predetermined intervals along the length of the plate column (100). At this time, the corner reinforcement member (500) and the fixing bar (600) may be arranged crosswise so as not to interfere with each other.

[0059]

[0060] Referring to FIGS. 1 and 2, a concrete filled column (10) according to one embodiment may further include a spacing member (800).

[0061] The spacing member (800) may be formed between the column steel frame (210) and the plate column (100). More specifically, the spacing member (800) may be formed between the reinforcing bar fixing member (300) and the plate column (100). By means of the spacing member (800), the concrete-filled column (10) may resist lateral pressure caused by concrete filled in the internal space (110). That is, the spacing member (800) is an element that resists lateral pressure caused by concrete pouring into the internal space (110), and may be additionally included in addition to the corner reinforcement member (500).

[0062] In addition, the spacing member (800) can maintain a constant gap between the column steel frame (210) and the plate column (100) to prevent the position of the column steel frame (210) from being displaced.

[0063] As described above, the square plate column (100) may include four “ㄱ” shaped plates, and in this case, the spacing member (800) may be positioned at the joint where two “ㄱ” shaped plates are connected so as to be in contact with both plates.

[0064] Here, the spacing member (800) may be formed of a member capable of one-sided surface contact, such as a “ㄷ” shaped steel or a “T” shaped steel. That is, the plate column (100) may be joined to the flange of the “ㄷ” shaped steel or the “T” shaped steel.

[0065] In this case, by bringing one surface of the spacing member (800) that can be in contact with the joint portion of the plate, a sufficient joint surface can be secured, thereby ensuring construction efficiency.

[0066]

[0067] Figure 3 is a cross-sectional view of a concrete filled column (20) according to another embodiment.

[0068] Referring to FIG. 3, a concrete-filled column (20) according to another embodiment may include the same plate column (100), fixing member (300), reinforcing bar fixing member (300), corner reinforcing member (500), fixing bar (600), and reinforcing bars (400, 700) as the concrete-filled column (10) according to the above-described embodiment. At this time, the concrete-filled column (20) according to another embodiment may further include a central member (200') different from the central member (200) of the concrete-filled column (10) according to the one embodiment.

[0069]

[0070] The central member (200') may include a column steel frame (210') and a connecting steel frame (220').

[0071] The column steel frame (210') can be formed at the center of the internal space (110). The column steel frame (210') is formed along the longitudinal direction of the plate column (20) and can be formed by connecting a plurality of H beams.

[0072] The connecting steel frame (220') may be connected at one end to the column steel frame (210) and at the other end to the spacing member (800). As illustrated in Fig. 3, if the spacing member (800) is a "ㄷ" shaped steel, the other end of the connecting steel frame (220') may be connected to the web of the "ㄷ" shaped steel. In this case, the flange of the "ㄷ" shaped steel may be connected to the plate column (100).

[0073] When the spacing member (800) is formed as a "ㄷ" shaped steel, there is an advantage in that the joint surface of the spacing member (800) and the plate and the joint surface of the connecting steel frame (220') and the spacing member (800) can be sufficiently secured. Due to this advantage, the structural safety of the structure can be improved.

[0074] The connecting steel frame (220') can be formed in multiples, and each other end can be connected to a spacing member (800) arranged at each plate joint, and one end can be connected to a column steel frame (210').

[0075]

[0076] Figure 4 is a flowchart of a method for manufacturing a concrete filled column (10) according to one embodiment.

[0077] Figures 5a and 5b show the manufacturing process of the concrete-filled column of Figure 4.

[0078] Referring to FIG. 4, FIG. 5a, and FIG. 5b, the method for manufacturing a concrete-filled column (10) can be performed in the following order.

[0079] 1. Step (S1) of manufacturing a plate column (100)

[0080] At this time, corner reinforcement members (500), fixing bars (600), and reinforcing bars (700) can be pre-assembled on the “ㄱ” shaped plates, respectively.

[0081] 2. Step of welding the central member (200) and the reinforcing bar fixing member (300) (S2, S3)

[0082] At this time, a reinforcing bar fixing member (300) may be welded to the column steel frame (210) of the central member (200). In addition, a spacing member (800) may be further welded to the outer surface of the reinforcing bar fixing member (300).

[0083] 3. Step for assembling the reinforcing bar (400) (S4)

[0084] Here, the reinforcing bar (400) can be assembled so as to be placed at each corner of the reinforcing bar fixing member (300).

[0085] 4. Step (S5) of working on the surface cover with a plate pillar (100)

[0086] In step S1, a surface cover operation can be performed so that the joint portion of the central member (200) of the pre-fabricated “ㄱ” shaped plate is joined to the spacing member (800).

[0087] 5. Turning step after cotton cover work (S6)

[0088] The central member (200) can be rotated so that the part that has not been covered with cotton is exposed.

[0089] 6. Step (S7) of re-covering the area where the cotton cover work was not done with a plate pillar (100).

[0090] A “ㄱ” shaped plate can be attached to the part where the cotton cover work has not been done so that the central material (200) is completely surrounded by the plate pillar (100).

[0091] 7. Step of welding the plate column (100) (S8, S9)

[0092] A concrete-filled column (10) can be completed by welding the joints where each “ㄱ”-shaped plate contacts each other.

[0093] 8. Step for short-coating the concrete-filled column (10) (S10)

[0094] 9. Step (S11) where the concrete filling column (10) is waiting for shipment

[0095] 10. Step (S12) where concrete-filled columns (10) are shipped and delivered directly to the site.

[0096] Afterwards, the concrete-filled column (10) can be constructed by filling the interior with concrete and going through a curing process on site.

[0097]

[0098] A concrete-filled column (10) according to one embodiment of the present invention has an advantage in that construction of the concrete-filled column (10) can be completed by forming a plate column (100), a central member (200), a reinforcing bar fixing member (300), a corner reinforcing member (500), a fixing bar (600), a plurality of reinforcing bars (400, 700), and a spacing member (800), and then filling the internal space (110) with concrete and allowing it to cure.

[0099]

[0100] As described above, the embodiments of the present invention have been described with specific details such as specific components and limited examples and drawings, but these are provided only to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments, and those with ordinary skill in the art to which the present invention pertains can make various modifications and variations based on this description. For example, appropriate results can be achieved even if the described techniques are performed in a different order from the described method, and / or the described structures, devices, etc. components are combined or combined in a different form from the described method, or are replaced or substituted by other components or equivalents. Therefore, the spirit of the present invention should not be limited to the described embodiments, and all things that are equivalent or equivalent to the claims below as well as the claims are considered to fall within the scope of the spirit of the present invention.

Claims

1. A square plate column with an internal space filled with concrete; A central member installed in the inner space along the longitudinal direction of the above plate column; and A reinforcing steel fixing member installed between the above plate column and the above central member; Including, In the above internal space, a plurality of reinforcing bars are arranged adjacent to the corners of the plate column, A concrete-filled column in which the above reinforcing bar fixing member is formed into an octagon, and at least two sides of the above reinforcing bar fixing member are fixed to the central member to fix the positions of the plurality of reinforcing bars.

2. In paragraph 1, The above plate pillar is formed in a square shape, A concrete-filled column further comprising corner reinforcement members arranged to form corner spaces at each corner of the plate column.

3. In paragraph 2, Further comprising a fixed bar placed in the above corner space, A concrete-filled column, wherein the above-mentioned fixed bar is formed to fix the positions of a plurality of reinforcing bars arranged between the above-mentioned plate column and corner reinforcing members.

4. In paragraph 3, The above fixed bar is formed in a U shape, The bent portion of the above fixed bar is placed adjacent to the corner of the above plate column, A concrete-filled column, wherein both ends of the above-mentioned fixed bar extend toward the above-mentioned central member.

5. In paragraph 3, The above plate pillar can be separated into four “ㄱ” shaped plates, Each “ㄱ” shaped plate is a concrete filled column in which the above fixed bar and the above plurality of reinforcing bars are pre-assembled.

6. In paragraph 3, A concrete-filled column, wherein the corner reinforcement member or the fixing bar is formed at predetermined intervals along the length of the plate column.

7. In paragraph 1, The above central material is, A plurality of column steel frames formed at the edge of the inner space and each of which is positioned at the center of each side of the plate column; and A connecting steel frame with both ends joined to the above column steel frame; Including, The above column steel frame is formed along the longitudinal direction of the above plate column, A concrete-filled column in which the above connecting steel frame is formed at predetermined intervals along the length of the plate column.

8. In paragraph 7, A concrete-filled column further comprising a spacing member formed between the column steel frame and the plate column.

9. In paragraph 8, The above spacing member is a “ㄷ” shaped steel or a “T” shaped steel, The above plate column is a concrete filled column, which is connected to the flange of the above “ㄷ” shaped steel or “T” shaped steel.

10. A method for manufacturing a concrete-filled column, comprising: a plate column forming an internal space filled with concrete and separable into a plurality of “L”-shaped plates; a central member installed in the internal space along the longitudinal direction of the plate column; and an octagonal reinforcing bar fixing member installed between the plate column and the central member; A step of manufacturing the plate column by pre-assembling a plurality of U-shaped fixing bars, the bent portion of which is positioned adjacent to the corner of the plate column and the two ends of which extend toward the central member, and a plurality of reinforcing bars whose positions are fixed by the bent portion, onto the plate; A step of welding the above central member and the above reinforcing bar fixing member; A step of assembling by placing reinforcing bars at each corner of the reinforcing bar fixing member; A step of performing a surface cover operation by combining a plurality of pre-assembled plates to the central member; A step of turning the above central material; A step of performing a surface cover operation by combining the remaining plurality of said plates so that the central material is surrounded by the plate pillars; A step of welding the joint where the above plates are in contact with each other; and A method for manufacturing a concrete-filled column, comprising the step of short-coating the above plate column.

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