KR102586788B1 - Ring column with double-ring structure - Google Patents

Abstract

The present invention relates to a ring column of an assembled structure for a column that is pre-assembled to construct a building column into a reinforced concrete structure or a steel reinforced concrete structure. The ring column is a plurality of columns arranged up and down at intervals while fixing vertical reinforcing bars. It consists of an inner ring piece, a plurality of outer ring pieces arranged up and down at intervals with at least some of them horizontally spaced outward from the inner ring piece, and an outer skin plate attached to the outer surface of the outer ring piece, the inner ring piece and The outer ring piece is characterized in that it is formed in the shape of a long band in the vertical direction.

Description

Ring column with doubling structure {RING COLUMN WITH DOUBLE-RING STRUCTURE}

The present invention relates to an assembled structure for columns that is pre-assembled before pouring concrete to enable the columns of a building to be self-supporting in order to construct a reinforced concrete structure or a steel reinforced concrete structure.

The construction of a column in a traditional reinforced concrete structure is done by assembling the reinforcing bar body by arranging vertical reinforcing bars and strip reinforcing bars surrounding them, installing a formwork on the outer circumference, and then pouring concrete.

However, this traditional method requires reinforcement work and form installation work to be done on site, so not only does the construction period take longer due to the excessive and complicated field work, but the rate of safety accidents is also high.

Therefore, in recent years, pre-assembled structures have been manufactured in advance at places other than the site, such as a factory, to eliminate the above-mentioned on-site reinforcement work and formwork installation work, transported to the site, installed in place, and then constructed only by pouring concrete. Efforts are continuing to shorten the construction period by completing .

As an example, Patent Publication No. 10-1672991 shown in Figure 1 proposes a prefabricated structure for reinforced concrete columns to solve problems such as increased construction volume caused by constructing conventional formwork on site.

As shown in FIG. 1, the prefabricated structure for a concrete pillar includes main reinforcing bars 110 arranged in the longitudinal direction at positions corresponding to the corners of the pillar; Band reinforcing bars (120) arranged in a direction intersecting the main reinforcing bars (110) and binding the main reinforcing bars (110); A first coupling portion 131 in the form of a bar extending in the direction intersecting the main reinforcing bar, and a ring shape surrounding the inner and outer sides of the main reinforcing bar 110 are disposed at both ends of the first coupling portion 131, respectively. The main rebar fixing part 132 and the first coupling part 131 extend in the horizontal direction from the main rebar fixing part 132 so as to be spaced apart from the main rebar 110 in the horizontal direction, so that the main rebar fixing part 132 and the first coupling part 131 are separated from the main rebar fixing part 132 in the horizontal direction. The horizontal connecting portion 133 connecting the coupling portion 131 and the first coupling portion 131 extend upward from the horizontal connecting portion 133 so as to be spaced upward from the horizontal connecting portion 133, and the horizontal connecting portion ( A vertical connection part 134 is formed connecting the first coupling part 131 and the first coupling part 133, and fixing members 130 are respectively disposed at positions corresponding to the side surfaces of the pillar; And a second coupling portion 141 engaged with the first coupling portion 131 is formed on the inner surface, and a plurality of finishing panels 140 are provided and continuously arranged in the longitudinal direction of the pillar to finish each side of the pillar. Including, the second coupling portion 141 protrudes from at least the top and bottom of the inner surface of the finishing panel 140 and extends in a direction parallel to the first coupling portion 131, and the finishing panel 140 The second coupling portion 141 disposed at the bottom overlaps with the second coupling portion 141 disposed at the top of the adjacent finishing panel 140 and engages with one first coupling portion 131. Do it as

In this way, the pre-assembled structure for a concrete column of registration number 10-1672991 allows the finishing panel 140, which functions as a formwork, to be fixed and installed in advance on the fixing member 130, thereby omitting separate formwork installation work at the site.

On the other hand, the pillar structure pre-assembled and installed on site as described above increases the efficiency of construction by having concrete poured together with the beam structure for multiple layers after the beam structure connected to it is assembled and installed. This is the current trend.

However, in the pre-assembled structure for a concrete column of Registration No. 10-1672991, the fixing member 130 on which the finishing member 140 is installed is connected to the main rebar 110 by only the main rebar fixing part 132 surrounding the main rebar 110. Since it is a structure fixed to the main reinforcing bar 110, it cannot be expected to have a self-supporting strength that can support the construction load until the concrete poured inside it hardens, for example, the load of the beam structure to be connected to it.

In addition, the prefabricated structure for concrete columns of registration number 10-1672991 mentioned above is not easy to join with the beam structure without installing separate reinforcing members such as internal diaphragms. Therefore, it is not realistically easy to pour concrete for multiple layers at the same time.

KR 10-1672991 B1

The present invention is intended to solve the above-mentioned problems of the prior art, and the installation of vertical reinforcing bars and skin plates can be easily accomplished, so that manufacturability is excellent, and the installed vertical reinforcing bars can have high self-supporting rigidity, as well as connecting beams. We aim to provide a ring column that is easy to join, allowing multiple layers of concrete to be poured, and has excellent constructability as there is no need to install reinforcing members such as internal diaphragms.

According to the most preferred embodiment of the present invention for solving the above-described problem, the column is pre-assembled with vertical reinforcing bars placed inside to construct a column, and a plurality of internal reinforcements are arranged up and down at intervals while fixing the vertical reinforcing bars. It consists of a ring piece, a plurality of outer ring pieces arranged up and down at intervals with at least a portion of them horizontally spaced outward from the inner ring piece, and an outer skin plate attached to an outer surface of the outer ring piece, and the inner ring piece and the outer ring piece. A ring column with a doubling structure is provided, which is characterized by a strip shape with a long width in the vertical direction. However, only the inner ring piece may be installed in areas other than the panel zone where the connecting beam is located.

At this time, the entire space between the inner ring piece and the outer ring piece can be spaced out, and bridge stiffeners can be installed symmetrically in all directions front, back, left, and right, and in the panel zone, at least one pair of bridge stiffeners located there can be installed on the connecting beam connected to the column. It can be placed within the flange width to form a stress transfer area for the connecting beam.

In addition, additional reinforcing vertical pieces can be installed at the inner edge of the inner ring piece to ensure structural rigidity. In this case, each end is connected to the inner ring piece so that the reinforcing vertical piece is continuous with the bridge stiffener installed between each side of the inner ring piece and the outer ring piece. It can be attached to .

In addition, in the panel zone, upper and lower outer ring pieces can be installed so that the upper and lower flanges of the connecting beam can be joined respectively, and web connecting pieces can be further provided so that the web of the connecting beam can be bonded between the upper and lower outer ring pieces. . Unlike these, the upper and lower outer ring pieces located in the panel zone can be made to contact the upper surface of the upper flange and the lower surface of the lower flange of the connecting beam connected to the column, respectively.

In addition, by installing a vertical reinforcement bar on at least one of the center and corner portions of the inner surface of the outer ring piece, it is possible to strengthen the outer skin plate in a ring column with a large cross-section and prevent deformation due to lateral pressure of the concrete.

The ring column of the present invention has vertical reinforcing bars, inner ring pieces, outer ring pieces, and outer skin plates integrated into a three-dimensional shape, and this three-dimensional and integrated structure is continuous in the longitudinal direction of the vertical reinforcing bars, so it has high rigidity and independence, so it can be used simultaneously with multiple layers of concrete. Through pouring, it is possible to improve the efficiency of the process and shorten the construction period.

In addition, the ring column of the present invention has a structure in which stress is transmitted by a bridge stiffener in which a plate-shaped member is installed vertically between the connecting beams, so that despite the formation of a CFT structure with a closed cross section by the skin plate, the ring column has a horizontal diamond structure. Since there is no need to install a fram, vertical reinforcing bars can be freely arranged, enabling efficient reinforcement and building high-quality columns by ensuring concrete tightness.

In addition, the ring column of the present invention is a ring column that can build a reinforced concrete structure inside a closed cross section by simply attaching the vertical reinforcing bar, which is the main reinforcing bar, to the inner ring piece and attaching the outer skin plate to the outer ring piece connected to the inner ring piece. Therefore, it has a CFT structure with excellent manufacturability.

Figure 1 is a structural diagram of a prefabricated structure for a reinforced concrete column according to the prior art.
Figure 2 is a perspective view of a ring column according to an embodiment of the present invention.
Figures 3 and 4 are plan views of embodiments of the shape and arrangement of the inner and outer ring pieces constituting the ring column of the present invention.
Figure 5 is a partial perspective view of each embodiment in a state in which reinforcing bars are attached to the inner ring piece.
Figure 6 is an explanatory diagram of the operation of the bridge stiffener installed in the panel zone.
7 to 10 are perspective views of each embodiment of the configuration of the outer ring piece installed in the panel zone.
Figure 11 is a cross-sectional view of an example in which the respective thicknesses of the outer ring piece and the inner ring piece are changed for the panel zone and other parts.
Figure 12 is a perspective view and a cross-sectional view of each part of a linker column according to another embodiment of the present invention.
Figures 13 to 15 are cross-sectional views of each embodiment of how the outer skin plate is installed on the outer ring piece in the panel zone.
Figure 16 is a perspective view of an embodiment in which vertical reinforcement bars are installed on the face and corner portions of the outer ring.

Hereinafter, the most preferred embodiment of the present invention will be described in detail with reference to the attached drawings. However, when explaining the present invention in detail, if the technical idea of the present invention is obscured or unclear, the description of the known configuration will be omitted.

Figure 2 shows a ring column 100 according to an embodiment of the present invention.

The ring column 100 of the present invention is an assembly structure for a column that completes the construction of a column of a reinforced concrete structure or a steel reinforced concrete structure by pouring concrete inside, and is pre-assembled by placing vertical reinforcing bars 20 therein. It is constructed so that it can be erected, and its length is set based on one pillar erection at the site. Therefore, one ring column may have multiple panel zones where the connecting beams 200 are installed.

This ring column 100 has a double ring structure in which an inner ring piece 10 is disposed inside, and an outer ring piece 30 is disposed outside the inner ring piece 10.

Figures 3 and 4 show each embodiment of the shape and arrangement structure of the inner ring piece 10 and the outer ring piece 30, and Figure 5 shows a portion of the vertical reinforcing bar 20 installed here. It was done.

The inner ring piece 10 strongly fixes the vertical reinforcing bar 20 by means such as welding and restrains the vertical reinforcing bar 20 through an anchoring action at the joint, thereby increasing the moment resistance ability of the vertical reinforcing bar 20.

The vertical reinforcing bar 20 may be attached to the outer surface of the inner ring piece 10 as shown in (a) of FIG. 5, and the inner surface of the inner ring piece 10 as shown in (b) of FIG. 5. It may be attached to . In addition, if necessary, additional band reinforcing bars (21) may be provided around the vertical reinforcing bars (20).

In this way, a plurality of inner ring pieces 10 to which the vertical reinforcing bars 20 are attached are arranged continuously at predetermined intervals in the vertical direction of the column.

A reinforcing vertical piece 11 may be further installed at the inner edge of the inner ring piece 10. The reinforcing vertical piece 11 firmly maintains the structural shape of the inner ring piece 10 by ensuring that the stress transmitted through the vertical reinforcing bar 20 is evenly distributed to the inner ring piece 10.

In addition, by installing studs 12 on the inner surface of the inner ring piece 10, the structural function of the inner ring piece 10 and the outer ring piece 30 connected to it can be improved through shear composite force with the concrete poured inside. You can.

The outer ring piece 30 is disposed outside the inner ring piece 10 in the horizontal direction. At this time, at least a portion of the outer ring piece 30 is horizontally spaced apart from the inner ring piece 10.

For example, as shown in FIG. 3, the entire outer ring piece 30 may be spaced apart from the inner ring piece 10, or as shown in FIG. 4, a portion of the outer ring piece 30 may be attached to the inner ring piece 10. Only a portion of the outer ring piece 30 that is not attached to the inner ring piece 10 may be spaced apart from the inner ring piece 10. A plurality of these outer ring pieces 30 are also arranged up and down at predetermined intervals corresponding to the arrangement of the inner ring pieces 10.

An outer skin plate 50 made of steel plate is attached to the outer surface of the outer ring piece 30. The outer skin plate 50 performs only a pure formwork function and increases the self-supporting rigidity of the ring column 100, which can support the construction load until the concrete poured inside is hardened through integrated behavior with the vertical reinforcing bar 20. It can be made to contribute to, or it can be made to act as part of the structural material by applying a thickness that can satisfy the required width-to-thickness ratio. Attachment of the shell plate 50 to the outer ring piece 30 can be done by welding by forming a weld hole (not shown) in the shell plate 50, or by using a taka pin for steel plates.

These inner ring pieces 10 and outer ring pieces 30 have a long strip shape in the vertical direction. Therefore, the inner ring piece 10 and the outer ring piece 30 have a three-dimensional structure that behaves as one unit, so that the ring column 100 of the present invention is capable of handling the vertical load transmitted through the vertical reinforcing bar 20 as well as the internal It is possible to maintain sufficient rigidity to resist horizontal loads such as lateral pressure of concrete placed in the concrete. In addition, the cross-section of the outer ring piece 30 is limited depending on the cross-sectional shape of the column, but the inner ring piece 10 may have various cross-sectional shapes regardless of the cross-sectional shape of the column. For example, in a square pillar, the outer ring piece 30 must be composed of a square cross-section, but the inner ring piece 10 can be composed of a circular cross-section as well as a polygonal cross-section such as square or hexagon.

As shown in FIG. 3, when the entire outer ring piece 30 is structured to be spaced apart from the inner ring piece 10, a bridge stiffener 40 is further installed between the inner ring piece 10 and the outer ring piece.

The bridge stiffener 40 is composed of a plate-shaped member and is installed between the inner ring piece 10 and the outer ring piece to have a horizontal or vertical shape as shown in (a) and (b) of Figure 6. , when it is installed to have a vertical plane shape like the latter, it is preferable that its upper and lower widths match that of at least one of the inner ring piece 10 and the outer ring piece 30.

This bridge stiffener 40 adjusts the positions of the inner ring piece 10 and the outer ring piece 30 and functions as a smooth stress transfer medium between them, especially the position where the connecting beam 200 is connected to the column. In the panel zone, as illustrated in FIG. 6, by functioning as an inner diaphragm, a high degree of moment is achieved without installing a separate horizontal diaphragm inside the closed cross section formed by the outer skin plate 50. It enables joining, and especially when installed to have a vertical plane shape as shown in (b) of FIG. 6, it is possible to have a CFT structure that allows free arrangement of the vertical reinforcement 20 even within its stress transfer area.

Therefore, the specific installation location and location of the bridge stiffener 40 are set according to the location and size of the flanges 210 and 220 of the connecting beam 200 connected to the column. For example, at least one pair of bridge stiffeners 40 located in the panel zone is installed to match the width of the flanges 210 and 220 of the connecting beam 200 connected to the column, so that stress is clearly transferred at the beam-column joint.

However, it is preferable that these bridge stiffeners 40 are installed symmetrically in all directions of the cross section of the ring column 100 to prevent stress from being concentrated in one direction.

On the other hand, as described above, a reinforcing vertical piece 11 may be installed at the inner corner of the inner ring piece 10. At this time, the reinforcing vertical piece 11 is connected to the inner ring piece 10 and the outer ring piece 30. ), the stress transfer between the inner ring piece 10 and the outer ring piece 30 can be made clear and more efficient by continuing with the bridge stiffener 40 installed between each surface portion.

In the panel zone where the connecting beam 200 is joined, the installation structure of the outer ring piece 30 can be changed depending on the joint structure of the connecting beam 200.

7 to 10 show each embodiment of the outer ring piece 30 in the panel zone related to the connection structure of the connecting beam 200 to the column.

In the embodiment shown in FIG. 7, some of the outer ring pieces 30 located in the panel zone, that is, the outer ring pieces 30 located on the surface where the connecting beam 200 is installed, are connected to the upper flange 210 of the connecting beam 200. The lower flanges 220 are installed at the top and bottom so that they can be joined.

In the embodiment shown in FIG. 8, a web joint piece ( 31) is further provided. However, there is no need to separately provide a structure corresponding to the web joining piece 31 between the upper and lower inner ring pieces 10 located on the inside thereof.

Figure 9 is an example in which the entire panel zone is composed of one outer ring piece 30. That is, the outer ring piece 30 in this embodiment has an upper and lower width that is large enough to accommodate both the upper and lower flanges 210 and 220 of the connecting beam 200 joined thereto. Therefore, in the panel zone, the outer skin plate 50 is formed by a portion of the outer ring piece 30, so there is no need to install it separately.

At this time, there is no need to increase the upper and lower widths of the inner ring pieces 10 located on the inside, and each of the upper and lower inner ring pieces 10 may be positioned at the upper and lower ends of the single outer ring piece 30 described above.

In the embodiment shown in FIG. 10, it can be applied when installing the connecting beam 200 through the ring column 100. In this case, the upper and lower outer ring pieces 30 located in the panel zone are installed to contact the upper surface of the upper flange 210 and the lower surface of the lower flange 220 of the connecting beam 200 connected to the column, respectively.

The largest bending moment occurs in the panel zone where the connecting beam 200 is joined. Therefore, it is desirable to configure the outer ring pieces 30 and inner ring pieces 10 located in the panel zone to have greater rigidity than those located in other sections.

For example, in the embodiment of Figure 7 or Figure 10 in which the outer ring pieces 30 respectively joined to the upper and lower flanges 210 and 220 of the connecting beam 200 are separated from each other, at least only the outer ring pieces 30 joined to the upper flange 210 are used. By increasing the thickness, it can be made to resist tensile stress more efficiently. At this time, the thickness of the inner ring piece 10 corresponding to the outer ring piece 30 can also be increased to provide a sufficiently stable beam-column moment joint structure in the panel zone through stress sharing.

Of course, as shown in FIG. 8, when the upper outer ring piece 30 and the lower outer ring piece 30 are integrated by the web joint piece 31, the rigidity in the panel zone is increased by increasing the thickness of the entire piece. It can be promoted. Figure 11 shows an example in which the respective thicknesses of the outer ring piece 30 and the inner ring piece 10 are changed for the panel zone and other sections.

Figure 12 shows the ring column 100 of another embodiment of the present invention.

The ring column 100 of this embodiment allows the outer surface of a pillar constructed by pouring concrete to be composed of a concrete finished surface, and the outer ring piece 30 is located in the portion located between the upper and lower panel zones where the outer ring piece 30 is installed. and the outer skin plate 50 attached thereto are not installed, and the formwork panel 55 is installed so that it can be removed after the pouring and curing of the column concrete is completed.

However, inner ring pieces 10 are installed between the upper and lower panel zones where the outer ring pieces 30 are not installed, and the inner ring pieces 10 restrain the vertical reinforcing bars 20, thereby reducing the bending moment of the vertical reinforcing bars 20. It is no different from the previously described embodiment in that the resistance capacity is increased so that the ring column 100 can sufficiently bear the construction load even in a state where concrete is not poured.

Figures 13 to 15 show each embodiment of the method in which the outer skin plate 50 is installed in the panel zone.

The above-described joining of the connecting beam 200 and the outer ring piece 30 in the panel zone may be accomplished by an indirect joining method using the outer skin plate 50 as shown in Figure 13, and in Figures 14 and 15. As shown, each flange 210, 220 of the connecting beam 200 may be directly joined to the outer surface of the outer ring piece 30.

In the latter case, as shown in Figure 15, the outer surface of the outer ring piece 30 located in the panel zone can be configured to form the same plane as the outer skin plate 50 attached to the outer ring piece 30 located in a place other than the panel zone. At this time, the upper and lower outer ring pieces 30 and the outer skin plate 50 to be located between them can be integrated in advance to facilitate the manufacture of the ring column 100.

The present invention integrates the inner ring piece 10, to which the vertical reinforcing bar 20 is attached, and the outer ring piece 30, to which the outer skin plate 50 is attached, directly or via the bridge stiffener 40, thereby forming the vertical reinforcing bar 20. ) to act as a vertical member supporting the construction load, and on the other hand, to anchor the outer ring piece 30, which operates integrally with the inner ring piece 10, from the inside, thereby attaching the outer skin plate to the outer ring piece 30 ( 50) prevents deformation due to the lateral pressure of the concrete placed inside it.

However, when the cross-section of the column to be built is very large, the structure formed by the integral combination of the inner ring piece 10 and the outer ring piece 30 cannot stably support the lateral pressure of the concrete poured therein.

Accordingly, a vertical reinforcing bar 60 may be further installed on at least one of the center and corner portions of the inner surface of the outer ring piece 30. FIG. 16 shows the application of the vertical reinforcing bar 60 to both the center and corner portions of the outer ring piece 30 using the ring column 100 illustrated in FIGS. 7 and 8 as an example.

The vertical reinforcement bar 60 may be an angle member, and the strip-shaped outer ring piece 30 makes installation of the vertical reinforcement bar 60 very easy.

In the above, the present invention has been described in detail with reference to specific embodiments, but the embodiments are merely examples to make the present invention easier to understand, so those skilled in the art will understand the scope of the technical idea of the present invention. It is obvious that this can be implemented with various modifications. Accordingly, such modifications will be said to fall within the scope of the present invention as set forth in the claims.

10; Inner ring piece 11; Reinforcement vertical piece
12; stud 20; vertical rebar
21; Band rebar 30; Outer ring
40; Bridge stiffener 50; skin plate
55; form panel 60; vertical reinforcement
100; ring column 200; connecting beam
210; upper flange 220; Lower flange
230; web

Claims (11)

In order to build a column, it is pre-assembled with vertical reinforcing bars 20 placed inside, a plurality of inner ring pieces 10 arranged up and down at intervals while fixing the vertical reinforcing bars 20, and at least a portion of the inner ring pieces 10 are located inside the column. It consists of a plurality of outer ring pieces 30 arranged up and down at intervals while being horizontally spaced outward from the ring piece 10, and an outer skin plate 50 attached to the outer surface of the outer ring piece 30,
The inner ring piece 10 and the outer ring piece 30 are formed in a strip shape with a long width in the vertical direction,
A bridge stiffener 40 is installed between each surface portion of the inner ring piece 10 and the outer ring piece 30, and a reinforcing vertical piece 11 is installed on the inner edge of the inner ring piece 10, and the bridge stiffener ( 40) is a ring column with a double ring structure, characterized in that each end is attached to the inner ring piece (10) so as to be continuous with the reinforcing vertical piece (11). delete According to paragraph 1,
A ring column with a double ring structure, wherein at least one pair of bridge stiffeners (40) located in the panel zone is installed to match the width of the flanges (210, 220) of the connecting beam (200) connected to the column. delete delete According to paragraph 1,
Some of the outer ring pieces 30 located in the panel zone are rings with a double ring structure, characterized in that they are installed so that the upper flange 210 and lower flange 220 of the connecting beam 200 connected to the column can be respectively connected. column. According to clause 6,
A ring column with a doubling structure, characterized in that a web joint piece (31) is provided between the upper and lower outer ring pieces (30) located in the panel zone so that the web (230) of the connecting beam (200) connected to the column can be joined. . According to paragraph 1,
Each of the upper and lower outer ring pieces 30 located in the panel zone has a doubling structure, characterized in that it is installed to contact the upper surface of the upper flange 210 and the lower surface of the lower flange 220 of the connecting beam 200 connected to the column, respectively. ring column with According to paragraph 1,
A ring column with a double ring structure, characterized in that the outer surface of the outer ring piece (30) located in the panel zone is configured to form the same plane as the outer skin plate (50) attached to the outer ring piece (30) located in a section other than the panel zone. According to paragraph 1,
A ring column with a double ring structure, characterized in that a vertical reinforcement bar (60) is installed on at least one of the center and corner portions of the inner surface of the outer ring piece (30). According to paragraph 1,
A ring column with a double ring structure, characterized in that a formwork panel 55 that can be removed without the outer ring piece 30 and the outer skin plate 50 installed is installed between each panel zone where the outer ring piece 30 is installed. .