KR101734187B1 - Pre-assembled re-bar column - Google Patents

Abstract

[0001] The present invention relates to a reinforced concrete prefabricated column in which a construction self-sufficiency is secured and a panel zone is reinforced, more specifically, The present invention relates to a reinforcing steel pre-assembly column capable of effectively resisting a bending moment transmitted from a beam.
The reinforcing steel pre-assembly column in which the panel self-supporting property is secured according to the preferred embodiment of the present invention is composed of a steel plate having a hollow, and a coupler portion to which a plurality of couplers are fixed is formed at each corner, A base plate; A bundle reinforcing bar fixed to the coupler of the base plate at a lower end thereof and installed at an edge of a cross section of the column; A through hole through which a bundle reinforcing bar is penetrated and a through steel plate formed at each corner of the steel plate main body are integrally formed and the steel plate main body having a cavity is formed integrally from the bottom of the column to the bottom of the panel zone in the longitudinal direction at regular intervals A fixed plate to be installed; An upper fixing plate formed of a steel plate having a hollow and having a coupler portion to which a plurality of couplers are fixed and formed at respective corners, and an upper end of the bundle reinforcing bar is fixed to the coupler; A panel zone sheathing plate composed of columnar sheaths in a column upper panel zone; A diaphragm steel plate composed of a hollow steel plate having grooves for inserting a plurality of reinforcing bars at respective corners and horizontally joined to the inside of the panel zone sheathing steel plate at the upper and lower ends of the panel zone to horizontally reinforce the panel zones; A rib steel plate joined to the inner surface of each panel zone steel sheet in the longitudinal direction so as to protrude vertically in the cross section to reinforce the panel zone; And a beam joining bracket coupled to the outer surface of the panel zone sheathing plate for joining the beam.

Description

(Pre-assembled re-bar column) where the construction self-sufficiency is secured and the panel zone is reinforced.

[0001] The present invention relates to a reinforced concrete prefabricated column in which a construction self-sufficiency is secured and a panel zone is reinforced, more specifically, The present invention relates to a reinforcing steel pre-assembly column capable of effectively resisting a bending moment transmitted from a beam.

The column is a vertical structural member that receives the load applied from the upper part from the horizontal structural member such as slab or beam and transmits it through the axial compression.

In the reinforced concrete structure, the column is completed by manually placing the reinforcing bars at the installation position in the plane plan and then pouring and curing the concrete with the form. In this case, there is a problem that the air is delayed because it depends on the workforce only. There is a problem in that safety accidents are incessantly performed because a worker climbs over a work platform to perform a rigid laying work for a long period of time.

In consideration of the above problems, recently, a reinforcing bar net assembly method in which reinforcing bars are assembled by assembling reinforcing bars in advance, hoisting the completed reinforcing bar with a crane, transporting the reinforcing bars to a place where the columns are installed, It is widely applied.

However, since the reinforcing net net assembling method has a problem in that the self-leveling of the completed reinforcing bar net is weak when the reinforcing bar used for the reinforcing net is lifted by the cranes, There was a limitation in maintaining the upright.

In addition, it is reasonable to construct a reinforced concrete structure in which compression-prime columns are economical and need no separate refractory sheathing, but it is often designed as a steel structure that is a deflected member. In this case, it is difficult to bond the reinforced concrete column to the steel beam. Also, since the steel beam can be joined after the concrete of the column is cured, there is a problem that the air is delayed. In the panel zone where the column is mainly compressive, It is a disadvantage that a separate reinforcing element is required in order to safely resist the electric power source.

As a background of the present invention, there is a patent registration No. 10-1487139 'Reinforcement line assembly column' (Patent document 1). This patent discloses four main rods vertically spaced apart from each other at the corner of the column; A plurality of auxiliary rods disposed vertically between the four main rods; A plurality of band bars surrounding the outer sides of the main bars and coupled to the outer sides of the main bars in multiple stages; A main bracket disposed at a height at which a beam is installed so that one side thereof is seated on an upper surface or a lower surface of the beam, and each corner is welded and coupled to the inside of four main ropes; An engaging bracket disposed at an upper end and a lower end of the main pipe so as to form a quadrilateral shape and each corner welded to the inside of four main ropes; And a first fastening bolt and a first fastening nut for fastening the fastening fastening brackets in the vertical direction.

The steel bar assembly column proposed by this patent has the advantage of minimizing the use of field personnel by securing the self-assurance of the construction and welding the main beam of the column with the main bracket and the joining bracket, The strength and stiffness of the panel zone, which is the joining zone of the column girder, is not secured sufficiently, and the main and auxiliary rods are connected only to the reinforcing bars. Therefore, there is a problem in the stability of the reinforcing bar itself.

Patent Registration No. 10-1487139 'Reinforcement Assembly Line'

It is an object of the present invention to provide a reinforcing steel pre-assembly column that can secure the self-supporting degree by ensuring its own strength and rigidity by making the reinforcing steel net not the simple steel reinforcing net but the steel reinforcing steel net.

The object of the present invention is to provide a reinforcing bar pre-assembling column capable of easily joining a steel beam with a steel beam so that the beam can be joined before concrete is cured and the panel zone is sufficiently reinforced to effectively resist the bending moment transmitted from the beam do.

Another object of the present invention is to provide a reinforcing bar pre-assembly column in which a separate spacer for securing the coating thickness of the cast iron root of the column is not required and the means for installing the pre-assembly column on the foundation is installed in advance.

The reinforcing steel pre-assembly column in which the panel self-supporting property is secured according to the preferred embodiment of the present invention is composed of a steel plate having a hollow, and a coupler portion to which a plurality of couplers are fixed is formed at each corner, A base plate; A bundle reinforcing bar fixed to the coupler of the base plate at a lower end thereof and installed at an edge of a cross section of the column; A through hole through which a bundle reinforcing bar is penetrated and a through steel plate formed at each corner of the steel plate main body are integrally formed and the steel plate main body having a cavity is formed integrally from the bottom of the column to the bottom of the panel zone in the longitudinal direction at regular intervals A fixed plate to be installed; An upper fixing plate formed of a steel plate having a hollow and having a coupler portion to which a plurality of couplers are fixed and formed at respective corners, and an upper end of the bundle reinforcing bar is fixed to the coupler; A panel zone sheathing plate composed of columnar sheaths in a column upper panel zone; A diaphragm steel plate formed of a steel plate having a cavity for inserting bundle reinforcing bars at each corner thereof and horizontally joined to the inside of the panel zone sheathing plate at the upper and lower ends of the panel zone to horizontally reinforce the panel zone; A rib steel plate joined to the inner surface of each panel zone steel sheet in the longitudinal direction so as to protrude vertically in the cross section to reinforce the panel zone; And a beam joining bracket coupled to the outer surface of the panel zone sheathing plate for joining the beam.

At this time, the penetrating steel plate of the fixing plate may be a spacer for securing the coating thickness of the bundle reinforcing bar by being interposed in the outer side mold.

On the other hand, the base plate is coupled to the foundation or lower layer slab, so that the installation work of the column can be simplified.

The panel steel panel may further include a shape steel plate extending from the panel-zone sheathing steel sheet to a lower portion of the panel-zone sheathing steel sheet so as to form a sheath of the lower portion of the panel zone.

At this time, a reinforcing steel plate formed of a steel plate having a hollow and having grooves for inserting the reinforcing bar can be horizontally joined to the inner surface of the steel plate.

On the other hand, by integrating the stud connector so as to protrude vertically in the cross section on the inner surface of the panel zone sheathing steel sheet, integration between the panel zone sheathing steel sheet and the concrete can be improved.

The reinforcing bar pre-assembling column according to the present invention comprises a plurality of reinforcing bars positioned at corner portions of a cross section of a column, a base plate for fixing the lower ends of the reinforcing bars, an upper fixing plate for fixing the upper ends of the reinforcing bars, Since it is composed of a plurality of fixing plates horizontally restrained, it is not a simple reinforcing steel net but is made into a frame, so that its own strength and rigidity are ensured, thereby securing the self-sufficiency of construction.

Further, the panel-zone sheathing steel sheet is constituted of columnar sheaths in the column top panel zone, and the diaphragm steel sheet is horizontally joined to the inside of the panel zone sheathing steel sheet at the upper and lower ends of the panel zone to reinforce the panel zone by the diaphragm action, The panel zone is vertically reinforced by being vertically projected on the inner surface of the panel zone sheathing steel sheet so as to vertically reinforce the panel zone, so that the panel zone can be sufficiently reinforced to effectively resist the bending moment transmitted from the beam.

In addition, since the beam joining bracket is bonded to the outer surface of the panel zone sheathing steel to provide easy joining with the steel beam, it is possible to shorten the air by joining the beam before the concrete of the column is cured, As the process is significantly reduced, the construction period can be shortened and the management factor can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments of the invention and, together with the description, serve to explain the principles of the invention, Shall not be construed as limiting.
FIG. 1A is a front view of a reinforcing steel pre-assembly column in which a panel self-supporting degree and a panel zone are reinforced according to the present invention, and FIG. 1B is a sectional view.
Fig. 2 is a perspective view of the base plate of the present invention, and Fig. 3 is a sectional view taken along line AA of Fig.
Fig. 4 is a cross-sectional view taken along the line BB of Fig. 1, Figs. 5a and 5b are cross-sectional views taken along the line CC, and Fig. 5c is a perspective view of the fixed plate.
FIG. 6 is an exploded perspective view of a panel zone of a reinforcing steel pre-assembly column in which a construction self-sufficiency is secured and a panel zone is reinforced according to the present invention, and FIG. 7 is a sectional view.
FIG. 8A is a sectional view taken along line DD of FIG. 1, and FIG. 8B is a perspective view of a reinforced steel plate of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

FIG. 1A is a front view of a reinforcing steel pre-assembly column in which a panel self-supporting degree and a panel zone are reinforced according to the present invention, and FIG. 1B is a sectional view.

A reinforcing bar pre-assembling column having a self-supporting degree of construction according to the present invention and reinforced with a panel zone is composed of a steel plate and a base plate (10) installed at the lower end of the column. A bundle reinforcing bar (20) having a lower end fixed to the base plate (10) and provided at an edge of a cross section of the column; A fixing plate 30 having a through hole 33 through which a bundle reinforcing bars 20 pass through at its corners, a fixing plate 30 installed at regular intervals in the longitudinal direction from the lower end of the column to the lower portion of the panel zone of the column; An upper fixing plate 40 composed of a steel plate and having the upper end of the bundle reinforcing bars fixed thereto; A panel zone enclosure steel plate 50 composed of columnar sheaths in the column upper panel zone; A diaphragm steel plate (60, 60) horizontally joined to the inside of the panel zone sheath steel plate (50) at the upper and lower ends of the panel zone to horizontally reinforce the panel zone; A rib steel plate 70 which is joined to the inner surface of the panel zone enclosure steel plate 50 so as to protrude vertically in the cross section to vertically reinforce the panel zone; A beam joining bracket 80 coupled to an outer surface of the panel zone sheath steel plate 50 for joining with the beam; And a form steel plate 90 extending from the panel zone enclosure steel plate 50 to a lower portion by a predetermined length so as to form an enclosure of a lower portion of the panel zone.

Fig. 2 is a perspective view of the base plate of the present invention, and Fig. 3 is a sectional view taken along line A-A of Fig.

The base plate 10 is formed of a hollow steel plate and has a coupler portion 12 formed at each corner to which a plurality of couplers 11 are fixed, and is formed at the lower end of the column. The base plate 10 may be joined to a foundation or lower layer slab on which the lower end of the column is to be installed, in a manner known in the art, such as by using anchor bolts (A). In other words, the means for installing the pre-assembly column on the foundation is provided in advance, which simplifies the installation work, thereby improving the workability and reducing the air.

At the corners of the cross section of the base plate 10 are formed couplers 12 to which a plurality of couplers 11 for fixing the lower end of the bundle reinforcing bars 20 are fixed. Therefore, if the lower end of the bundle reinforcing bar 20 is inserted into the coupler 11 and fixed by any known method in the art such as welding, the bundle reinforcing bar 20 can be fixed between the bundle reinforcing rods 20 without using a separate spacer So that the bundle reinforcing bar 20 can be installed at the corner of the column without the need of separate laying work.

The reinforcing bar 20 may be formed at each corner portion of the column section with four reinforcing bars spaced from each other as shown by being composed of a plurality of reinforcing bars so as to be located at the corners of the cross section of the column, Are not limited to the four shown, but may be variously configured.

Fig. 4 is a cross-sectional view taken along the line B-B in Fig. 1, Figs. 5a and 5b are cross-sectional views taken along line C-C, and Fig. 5c is a perspective view of the fixed plate.

The fixing plate 30 is composed of a steel plate and is composed of a steel plate main body 32 having a hollow 31 and a penetrating steel plate 34 formed at each corner of the steel plate main body 32.

The penetrating hole 33 through which the bundle reinforcing bar 20 penetrates is formed in the penetrating steel plate 34 and is formed so as to protrude from the edge of the steel plate main body 32 do.

The hollow 31 has a size that can be filled tightly when the concrete is laid and the penetrating steel plate 34 is formed so as to protrude from the edge of the steel plate main body 32, This space is designed to fill the concrete more tightly.

The fixing plate 30 is not limited to the shape shown as being capable of being configured in various shapes, and may be configured to fit the column cross-sectional size such that the outer side of the penetrating steel plate 34 is in contact with the die, In this case, the penetration steel plate 34 provides the coating thickness to the bundle reinforcing bar 20, and the coating thickness can be ensured without a separate spacer.

The fixing plate 30 is installed at regular intervals in the longitudinal direction from the lower end of the column to the lower portion of the panel zone of the column. It is preferable that the reinforcing bars 20 are horizontally surrounded by a hoop between the fixing plates 30 as shown in FIG.

The present invention has been devised not only as a simple reinforcing bar net but also as a stiffener to constitute a reinforcing bar pre-assembly column and to have its own stability. One of the constituent elements of the stiffening plate 30 is a fixing plate 30 which fixes the bundle reinforcing bars 20 at regular intervals in the longitudinal direction and forms support points in the horizontal direction to reduce the buckling length of the reinforcing bars, Improves bearing capacity.

FIG. 6 is an exploded perspective view of a panel zone of a reinforcing steel pre-assembly column in which a construction self-sufficiency is secured and a panel zone is reinforced according to the present invention, and FIG. 7 is a sectional view.

The upper end fixing plate 40 is formed at the uppermost end of the reinforcing bar pre-assembly column of the present invention. The upper end fixing plate 40 is made of a steel plate having a cavity and a coupler 42 formed at each corner for fixing a plurality of couplers 41. The upper end of the bundle reinforcing bars 20 is fixed to the coupler 41 When the upper end of the bundle reinforcing bar 20 is inserted into the coupler 41 and fixed by any known method in the art such as welding, as in the case of the base plate, the bundle reinforcing bar 20 can be fastened to the bundle reinforcing bar 20 without using a separate spacer. It is possible to maintain the interval between the reinforcing rods 20 and the reinforcing rods 20 at the corners of the pillars without any additional roots.

The base plate 10, the bundle reinforcing bar 20, the fixing plate 30, and the upper fixing plate 40 form a kind of reinforcing cage. As described above, the reinforcing bars are not simply a reinforcing bar, It is designed to be self-stabilizing. That is, in the existing reinforcing bar pre-assembly column technique, the main rope and the auxiliary rope are surrounded by the reinforcing bars to form the reinforcing bar network. In contrast, the present invention is characterized in that the reinforcing bars 20, A base plate 10 for fixing the lower end, an upper fixing plate 40 for fixing the upper end of the bundle reinforcing bars, and a plurality of fixing plates 30 for horizontally restraining the bundle reinforcing bars at regular intervals in the longitudinal direction, As a result, strength and stiffness of a certain degree are ensured, and the self-sufficiency of the construction is ensured.

In addition, the present invention is characterized in that the panel zone of the column is made of a steel sheet which is a tensile material at the outermost part of the column so that the joining of the panel zone of the column to the steel beam is facilitated and the beam of the column is cemented before the concrete is cured, So as to effectively resist the bending moment transmitted from the beam.

The panel-zone sheathing steel plate 50 is made up of columnar sheaths in the column top panel zone, and the diaphragm steel plates 60 and 60 are formed of a steel plate having a hollow reinforcing bar- And is horizontally joined to the inside of the panel-zone sheathing steel sheet 50 at the upper and lower ends of the panel-zone sheathing steel sheet 50 to horizontally reinforce the panel zone by a diaphragm action. The diaphragm steel plates 60 and 60 are preferably formed at positions corresponding to the upper and lower flange positions of the beams coupled to the panel zones.

Further, between the diaphragm steel plates 60 and 60, there is further provided a rib steel plate 70 longitudinally coupled to the inner surface of the panel zone enclosure steel plate 50 so as to vertically protrude in the cross section, thereby vertically reinforcing the panel zone. The rib steel plate 70 reinforces the strength and rigidity of the panel zone, and at the same time, integrates between the panel-zone sheath steel plate 50 and the concrete.

Although the present invention is not limited to this configuration, it is possible to configure two or more rib steel plates 70 when the panel zone is required to be reinforced, (70) thickness and number of installation are subject to the structural calculation. In addition, as shown in the figure, a stud connector can be further joined to the inner surface of the panel zone enclosure steel plate so as to protrude vertically in the cross section, thereby further improving integration between the panel zone enclosure steel plate 50 and the concrete.

The beam joining bracket 80 is coupled to the outer surface of the panel-zone sheathing steel sheet 50 and is a means for easy joining with the steel beam. The beam joining bracket 80 is coupled so that a plurality of steel plates protrude from the outer surface of the panel-zone sheathing steel plate 50 in a phantom shape. The shape of the brackets 80 is not limited to the shape and may be changed corresponding to the shape of the steel frame have.

The panel-zone sheathing steel sheet 50 may further include a shape steel plate 90 extending to a predetermined length to form the outer surface of the lower portion of the panel zone.

The steel frame prefabricated column according to the present invention is constructed such that the panel zone is a steel plate, a permanent mold is installed to form a shell of the column, and a lower portion of the panel zone is configured to expose a reinforcing bar without a steel plate form. In the lower part of the zone, concrete is inserted and cured after installing a cast concrete for the site. In case of a structure requiring a high height such as a warehouse, the height of the column is designed to be high and in this case, it is difficult to install the form at the bottom of the panel zone (For example, if the form needs to be installed above 3.6 meters).

The form steel plate 90 is made of a permanent mold so as to extend a certain length to the lower part of the panel-zone sheathing steel plate 50 in order to solve this problem.

The form steel plate 90 is preferably made of a steel sheet having a smaller thickness than the panel-zone sheath steel sheet 50.

FIG. 8A is a sectional view taken along line D-D of FIG. 1, and FIG. 8B is a perspective view of a reinforced steel plate of the present invention.

As shown in FIG. 8A, a reinforcing steel plate 30a may be further provided inside the form steel plate 90. FIG.

The reinforcing steel plate 30a is made of a steel plate having a hollow 32a and is formed at the corners with grooves 31a for inserting the reinforcing steel bars 30 and is horizontally coupled to the inner surface of the steel plate 90.

As described above, according to the present invention, there are provided a multi-layer reinforcing bar located at a corner of a cross section of a column, a base plate for fixing the lower ends of the multi-layer reinforcing bars, an upper fixing plate for fixing the upper ends of the multi- The steel plate is composed of a plurality of fixed plates which are constrained to the steel plate, so that the strength and stiffness of steel plate are secured not by simple reinforcing steel net but by self-reinforcing steel plate.

In addition, the panel zone sheathing steel sheet is constituted by columnar sheaths in the column top panel zone, and the diaphragm steel sheet is joined horizontally inside the panel zone sheathing steel sheet at the upper and lower ends of the panel zone, , The rib steel plate is vertically projected on the inner surface of the panel zone sheathing steel plate so as to vertically reinforce the panel zone, so that the panel zone can be sufficiently reinforced to effectively resist the bending moment transmitted from the beam.

In addition, since the beam joining bracket is bonded to the outer surface of the panel zone sheathing steel to provide easy joining with the steel beam, it is possible to shorten the air by joining the beam before the concrete of the column is cured, As the process is significantly reduced, the construction period can be shortened and the management factor can be reduced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

10: Base plate
11: Coupler
12: Coupler part
20: bundle reinforcing bars
30: Fixing plate
31: hollow
32: Steel plate body
33: Through hole
34: Through steel plate
40: upper fixing plate
41: Coupler
42: Coupler part
50: Panel zone sheath plate
60: Diaphragm steel plate
61: Groove for bundle reinforcing bars
70: rib steel plate
80: Bracket for beam connection
90: Form steel plate

Claims (6)

A base plate 10 made of a steel plate having a hollow portion and having a coupler portion 12 to which a plurality of couplers 11 are fixed,
A bundle reinforcing bar (20) having a lower end fixed to a coupler (11) of the base plate (10) and provided at an edge portion of a columnar section;
A steel plate main body 32 having a hollow 31 and a through hole 33 through which the bundle reinforcing bars 20 are passed are formed to be protruded from the respective corners of the steel plate main body 32, A fixing plate 30 which is integrally formed with the penetrating steel plate 34 so as to be provided at a predetermined interval in the longitudinal direction from the lower end of the column to the lower portion of the panel zone of the column;
The upper end of the bundle reinforcing bar 20 is fixed to the upper end fixing plate 40 (not shown), which is formed by a steel plate having a hollow portion and a coupler portion 42 to which a plurality of couplers 41 are fixed, );
A panel zone enclosure steel plate 50 composed of columnar sheaths in the column upper panel zone;
The panel zone is horizontally joined to the inside of the panel zone sheathing steel sheet 50 at the upper and lower ends of the panel zone so as to horizontally reinforce the panel zone A diaphragm steel plate (60, 60);
A rib steel plate 70 which is longitudinally joined to the inner surface of each panel-zone sheathing steel sheet 50 so as to protrude vertically in the cross-section to reinforce the panel zone;
A beam joining bracket 80 coupled to an outer surface of the panel zone sheath steel plate 50 for joining with the beam; And
A plurality of grooves for inserting bundle reinforcing bars 31a are formed at the corners of the panel zone enclosure steel plate 50 and extend to a lower portion of the panel zone enclosure 50 so as to form an outer shell of the panel zone lower column, And a form steel plate (90) in which a reinforcing steel plate (30a) is horizontally coupled to an inner surface of the reinforcing steel plate (30). The method according to claim 1,
Wherein the penetrating steel plate (34) of the fixing plate (30) is interposed in an outer side mold to become a spacer for securing the covering thickness of the bundle reinforcing bars, wherein the panel self-supporting degree is secured and the panel zone is reinforced. The method according to claim 1,
The base plate 10 is coupled to a foundation or lower layer slab,
A reinforced concrete prefabricated column in which a panel self-supporting degree is secured and a panel zone is reinforced, characterized in that the installation work of the column is simplified. delete delete The method according to claim 1,
And a stud joint is vertically protruded in the cross section on the inner surface of the panel zone sheathing steel sheet 50 to improve the integration between the panel zone sheathing steel sheet 50 and the concrete. Pre-assembly column.

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