KR20190126530A - Pre-fabricated column with angle-type reinforcing bar - Google Patents

Abstract

The present invention relates to an angle type preassembly column, which is possible to improve efficiency of factory manufacture and constructability of a site. The angle type preassembly column includes: four first main angles in which a portion bent at 90 degrees has a circular arc shape and which is spaced apart from each other to be vertically arranged in a corner position of a column; a plurality of auxiliary bars arranged to be in parallel with the four first main angles; a cross-shaped connection beam provided between the four first main angles and fixing a composite beam; and a support bracket coupling a space between the four first main angles to connect the same and supporting the cross-shaped connection beam.

Description

Pre-fabricated column with angle-type reinforcing bar}

The present invention relates to a line assembly column, and more particularly, to a line assembly column using an angle.

Construction industry framing works can be divided into reinforced concrete structure, steel structure, steel reinforced concrete structure.

Reinforced concrete structure, which is most commonly applied, is a construction method that uses only concrete and reinforcing bars in the field and installs formwork directly in the field, which has the advantage that the construction cost is the lowest than the other two methods. However, almost all of the work and costs are incurred on site, with the longest construction period of the above three methods and much more affected by the weather. In addition, due to the high dependence of on-site manpower, the labor cost of rebar workers and carpenters has recently risen, making it difficult to supply manpower.

The steel structure has the advantage of shortening the construction period because it can minimize the influence of the weather due to the factory manufacturing of the steel member and the dry method in the field, but it costs more than the reinforced concrete construction because it requires more steel than other construction methods. This is a high technique.

Steel reinforced concrete structure can be called the fusion of steel structure and steel concrete structure. It is the construction method that can make the most robust structure by supplementing the structural shortcomings that cannot be solved with steel only with steel and concrete. However, there are still disadvantages of the cost increase due to the use of steel frame and the need to install formwork and cast concrete in the field.

Therefore, there is a demand for a method that can be effectively applied to the site by combining the advantages of the above methods and combining heterogeneous parts between the processes.

At present, the construction market is more adverse than good news, such as severe labor shortages and instability of raw material prices. The most serious problem is the shortage of high-quality engineers and the inability to supply manpower on-site.

For this reason, the dominance of the building market is gradually changing to a method that can simplify the construction method and minimize the manpower input on the site. Among the various types of methods created above, there are many pre-assembled products and methods that produce pillars or beams at the factory and construct them.There are many parts that need to be improved, such as the lack of cost competitiveness or the use of unnecessary steel due to the initial market entry. Is also springing up.

This is why the necessity of pre-assembly of the major structural parts that lowers the dependence on the field work, the biggest disadvantage of reinforced concrete construction, and the method of manufacturing the factory, which is the advantage of the steel structure, is more important. The prefabrication method can satisfy two conditions: economics of reinforced concrete columns and constructability of steel structures.

However, when installing the reinforcing bar columns, it is difficult to secure verticality even if the construction is calculated by independence, and excessive load is concentrated on the slab or bow due to neglect of management or lack of recognition in the construction process. It often happens.

Patent Document 1: Korean Registered Patent No. 1233693 (2013. 02. 08), "Anti-earthquake Welded Structure of Prefabricated Steel Reinforced Concrete Columns and Cheolgolbo Using A-beam Patent Document 1: Korean Registered Patent No. 0898283 (2009. 05. 12), "Steel Reinforced Steel Column for SRC Columns and Method for Constructing Steel Frame Using the Same"

An object of the present invention is to provide an angle-type pre-assembled column that can improve the efficiency of the factory manufacturing and the workability of the site.

In order to achieve the above object, the angle-type line-assembly pillar according to an embodiment of the present invention, the four angles are arranged vertically spaced apart from each other at the corner position of the column as the angle of the arc bent at 90 °. Main angle; A plurality of auxiliary muscles arranged in parallel with the four primary main angles; A cross-shaped joint beam provided between the four primary main angles to fix the composite beam; And a support bracket coupled to the four primary angles to support the cross-joint beams.

In this case, the cross-shaped junction beam, the first composite beam connecting body disposed to pass through the pillar; And a second composite beam connector disposed to pass through the pillar and vertically connected to the first composite beam connector.

In this case, the first composite beam connector is a prefabricated composite beam structure for fixing a large composite beam connected to the pillar, a pair of first web plate; And a first lower plate coupled to a lower flange of the first web plate to form a bottom, wherein the second composite beam connector is a prefabricated composite beam structure for fixing a small composite beam connected to the pillar. A pair of second web plates; And a second lower plate coupled to the lower flange of the second web plate to form a bottom.

In this case, each of the first web plate and the second web plate has an inner upper flange that is horizontally bent inwardly in a portion located inwardly of the pillar and in an outward direction in a portion located outside of the pillar. It may have a horizontal bent outer top flange.

In addition, each of the first lower plate and the second lower plate may have a through hole at a portion passing through the center of the pillar.

Meanwhile, the first composite beam connector may include a pair of connection plates connected to an opposite second web plate inside a surface to which the second web plate is attached.

In addition, further comprising four secondary angles extending the four primary angles, wherein the four primary angles are formed with a length corresponding to the height of the deck surface formed by the composite beam, The secondary main angle may be connected through a separation bracket spaced a predetermined distance from the end of the primary angle to the inside of the pillar.

The cover plate may further include a cover plate disposed outside the primary main angle of the portion where the cross-beams are arranged.

According to the angle-type line assembly pillar according to an embodiment of the present invention,

First, the pillars, which are the main structures of the building structure, are manufactured at the factory, which is the same as the steel structure, using angles, and then the prefabricated columns in the form of finished products can be installed at the site.

Second, the application of cross-beams connecting the columns and beams ensures precision and seismic resistance, and the arrangement of angles can be arranged at the corners of the columns to facilitate the penetration of the cross-beams. have.

1 is a perspective view of an angle line assembly pillar according to an embodiment of the present invention.
FIG. 2 is a plan view of the angled line assembly pillar shown in FIG. 1.
FIG. 3 is a perspective view of an angle line assembly column shown in FIG. 1.
Figure 4 is a perspective view of the cross-beams shown in FIG.
FIG. 5 is a side view of the angled line assembly pillar illustrated in FIG. 1.
FIG. 6 is a perspective view of another direction of the angled line assembly pillar illustrated in FIG. 1.
7 is a perspective view illustrating that a cover plate is further implemented on the angle line assembly pillar shown in FIG. 1.
FIG. 8 is a perspective view of the angled line assembly pillar of FIG. 7 viewed from another direction. FIG.
9 is a perspective view of an angle line assembly pillar according to another embodiment of the present invention.
FIG. 10 is a perspective view of an angle type prefabricated column shown in FIG. 9.
FIG. 11 is a plan view of the angled line assembly pillar illustrated in FIG. 9.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this case, the same components in the accompanying drawings are to be noted with the same reference numerals as possible. In addition, detailed descriptions of well-known functions and configurations that may blur the gist of the present invention will be omitted. For the same reason, in the accompanying drawings, some components are exaggerated, omitted or schematically illustrated.

1 is a perspective view of an angle line assembly pillar according to an embodiment of the present invention, Figure 2 is a plan view of the angle line assembly pillar shown in Figure 1, Figure 3 is a top view of the angle line assembly pillar shown in Figure 1 4 is a perspective view illustrating the cross-beams shown in FIG. 1, FIG. 5 is a side view of the angled prefabricated column shown in FIG. 1, and FIG. 6 is an angled prefabricated column shown in FIG. Is a perspective view of the other direction.

1 to 6, the angle type line assembly pillar 1000 according to an embodiment of the present invention includes a primary main angle 100, an auxiliary bar 210, a band rebar 220, and a support bracket 300. , Cross-shaped spliced beams T and secondary primary angles 800.

The primary main angle 100 is an angle in which a portion bent at 90 ° has an arc shape and is vertically spaced apart from each other at a corner position of the column. Primary primary angle 100 is provided with four to form a pillar. Each primary main angle 100 is arranged such that the bent portion is the edge of the column.

Depending on the implementer, the primary primary angle 100 may use a common a-beam, but it is preferable to implement the steel bent in a round shape for ease of coupling with the strip reinforcing bar 220.

The band reinforcing bar 220 is coupled to the outer side of the primary main angle 100 in multiple stages while wrapping the corner of the primary main angle 100 so that the corner is an arc shape. The band reinforcing bar 200 may be used for welding reinforcing bars, and the band reinforcing bar 200 may have an inner surface radius R of a bent portion of 2 to 10 times the nominal diameter of the band reinforcing bar d.

The primary primary angle 100 and the strip reinforcing bar 220 are each bonded by spot welding.

When the primary main angle 100 is implemented as a general a-beam, it is difficult to secure the edge contact of the band reinforcing bars 220 due to the corners. The strip reinforcing bar 220 may be in close contact with the round surface of the primary main angle 100 to ensure continuity, thereby constraining the concrete inside the pillar. (Confinement effect)

The auxiliary muscles 210 are a plurality of auxiliary rebars arranged side by side with the four primary angles 100. The auxiliary muscle 210 is coupled to the band reinforcing bar 220 and the spot welding. The number of auxiliary muscles 210 to be used may be appropriately adjusted according to the cross-sectional size of the pillar (1000).

The auxiliary bar 210 and the strip reinforcing bar 220 is preferably used for welding rebar, respectively. That is, by using the conventional reinforcing bars (SD500W, SD400W, etc.) to eliminate the use of conventional reinforcing bars to weld the secondary reinforcement 210 and the band reinforcement 220 to ensure the degree of independence and workability.

Welding reinforcing bar is specially manufactured to increase the carbon content so that welding is easy in the processing plant. The carbon content of the general reinforcing bar is 0.2 to 0.3%, in the case of H-shaped steel, about 0.2%, and the reinforcing bar is 0.4% or more. In the case of ordinary reinforcing bars, the undercut phenomenon occurs that the strength is weakened. However, in the case of welding reinforcing bars, there is no problem.

The cross-shaped splicing beam T fixes the composite beams 600 and 700 provided and connected between the four primary main angles 100.

Cross-shaped splicing beam (T) is composed of the first composite beam connector 400 and the second composite beam connector (500).

The first composite beam connector 400 is disposed to pass through the pillar 1000. That is, the first main angle 100 and the neighboring primary angle 100 is arranged in a form of losing, and is supported by the provided in the form of connecting between the primary angle (100).

The support bracket 300 and the cross-shaped joint beam (T) may be welded to prevent the departure during transportation. In addition, an auxiliary support bracket 310 may be further provided to fix the upper side of the cross-beam spliced beam (T) for a firm fixing.

The first composite beam connector 400 is for fixing the large composite beam 600 connected to the pillar 1000, and has the same assembled composite beam structure as the large composite beam 600 to be connected.

Referring to FIG. 4, the first composite beam connector 400 includes a pair of first web plates 410, a first lower plate 420, and a connecting plate 430.

The first composite beam connector 400 is formed to have the same cross section as that of the composite beam (composite beam) 600 to be connected.

The first web plate 410 has an upper flange 411 horizontally bent in an outward direction, a lower flange 413 horizontally bent inward at a lower end, and a web 412 connecting the upper flange 411 and the lower flange 413. It includes.

The upper flange 411, the web 412 and the lower flange 413 may be formed by bending the integral steel sheet. That is, the first web plate 410 may be formed by bending one steel plate.

One end of the first composite beam connector 400 has been described, but since the first composite beam connector 400 is symmetrical about the pillar 1000, the opposite end portion has the same shape.

On the other hand, the portion located inside the pillar 1000 does not have the upper flange 411 horizontally bent in the outward direction in order to prevent interference with the primary primary angle (100).

The portion located inside the pillar 1000 to compensate for the flange strength (ie, the area formed by the primary main angles 100) may be welded to the inner side of the upper end of the web 412 by using a-shaped steel or a bent steel. An upper flange 414 is bent horizontally inwardly. In this case, the horizontal bent upper flange 414 may be formed to extend to the outer portion of the pillar 1000 may overlap the upper flange 411.

The first lower plate 420 is combined with the lower flange 413 of the first web plate 410 to form a bottom of the first composite beam connector 400. At this time, a portion of the first lower plate 420 passing through the pillar 1000 may be provided with a through hole H for easy pouring of concrete. In the illustrated example, the through hole (H) is a square, but this is only one of the embodiments, the shape of the through hole (H) according to the size and cross-sectional shape of the pillar 1000 may be implemented in a circular shape In some cases, it may be omitted.

The second composite beam connector 500 includes a pair of second web plates 510 and a second lower plate 520.

The second composite beam connecting member 500 is also formed to have the same cross section as the cross section of the composite beam (synthetic boss (small) 700) to be connected.

The second web plate 510 has an upper flange 511 horizontally bent in the outward direction, a lower flange 513 horizontally bent inward at the lower end, and a web 512 connecting the upper flange 511 and the lower flange 513. It includes.

The second composite beam connector 500 is disposed to pass through the pillar 1000, and is vertically connected to the first composite beam connector 400.

That is, the second composite beam connecting member 500 should be disposed to pass through the pillar 1000, but when formed integrally, the second composite beam connecting member 500 is blocked by the first composite beam connecting member 400, so that both sides of the first composite beam connecting member 400 are formed. Is connected in the form of binding to.

In FIG. 4, only one second composite beam connector 500 is shown connected to one web of the first composite beam connector 400, but only for the sake of brevity and the second composite beam connector 500 on the opposite side. Combine in a symmetrical form.

When forming the second web plate 510, the upper flange 511, the web 512, and the lower flange 513 may be formed by bending an integral steel sheet. That is, the second web plate 510 may be formed by bending one steel plate.

On the other hand, the upper flange 511 horizontally bent in the outward direction in order to prevent interference with the primary main angle 100 in the portion located inside the pillar 1000.

The portion located inside the pillar 1000 to compensate for the flange strength (ie, the area formed by the primary main angles 100) may be welded to the a-shaped steel or the bent steel to the inside of the upper end of the web 512. An upper flange 514 is bent horizontally inwardly. In this case, the horizontal bent upper flange 514 may be formed to extend to the outer portion of the pillar 1000 may overlap the upper flange 511.

The second lower plate 520 is combined with the lower flange 513 of the second web plate 510 to form a bottom of the second composite beam connecting member 500.

Meanwhile, the first composite beam connector 400 further includes a connection plate 430 for connection continuity of the second composite beam connector 500.

The connecting plate 430 is a plate connecting the second web plate 510 connected to the opposite side from the inside of the surface to which the second web plate 510 is attached.

The connecting plate 430 is coupled to the inner side surfaces of the first web plate 410 by welding. In this case, since the second web plate 510 is a pair, a corresponding connection plate 430 should also be provided in a pair.

The lower plate connecting plate 440 connecting the second lower plate may be further provided according to the size of the pillar 1000 and the size of the second composite beam connecting member 500.

In the building, the lower floor must bear the weight of the upper floor, so the cross-sectional area of the column is determined by the load. However, since the load to be supported toward the upper layer decreases, it is not necessary to form the cross-sectional area of the column as the lower layer.

When the cross-sectional size of the pillar 1000 is implemented to be reduced, the primary main angle 100 is formed to have a length corresponding to the height of the deck surface formed by the composite beams 600 and 700.

That is, it is preferable to form the length corresponding to the height of the deck so that the primary main angle 100 does not protrude from the bottom surface of the layer supported by the composite beam (600, 700).

The prefabricated column 1000 further includes four secondary angles 800 extending four primary angles 100.

At this time, the secondary main angle 800 is connected through the separation bracket (B) for a predetermined distance spaced from the end of the primary angle 100 to the inside of the pillar.

Spaced bracket (B) is a combination of flat iron by welding, it is formed to have a width as much as the width of the column to be reduced.

The secondary main angle 800 is preferably a rib-shaped angle in which a portion bent at the same 90 ° as the primary main angle 100 has an arc shape.

The strip reinforcing bar 220 is coupled to the outside of the secondary main angle 800 in multiple stages while surrounding the outer side of the secondary main angle 800 so that the corner is an arc shape.

The overall length of the pillars 1000 (the length of the primary main angle 100 and the secondary main angle 800-1) is limited for easy transportation. The length of the secondary main angle 800 may be divided by a suitable line, and the connecting line 900 may be used to connect the upper prefabricated columns.

As described above, since the pre-assembled pillar 1000 according to the present invention has a pre-assembled form up to a portion where the cross-sectional area of the pillar is reduced, the time required for field installation can be further shortened.

FIG. 7 is a perspective view illustrating that the cover plate is further applied to the angle type line assembly pillar illustrated in FIG. 1, and FIG. 8 is a perspective view of the angle type line assembly pillar of FIG. 7 viewed from another direction.

The illustrated embodiment includes a cover plate CP disposed outside the primary main angle 100 of the portion where the cross-shaped spliced beam T is disposed.

The cover plate CP is formed by steel bending and welding. In the space consisting of the primary main angle 100 is installed a predetermined distance (that is, concrete cover thickness) spaced apart.

Since the shape of the part where the cross-joint beam T and the primary angle 100 are connected is complicated, it takes a lot of time when installing the formwork in the field. Particularly in the case of high floor parts, human / material requirements such as preparing temporary supports for work are caused. Therefore, when assembling the pre-assembly column 1000 in the factory, the cover plate (CP) that serves as a formwork integrally formed, it is possible to increase the convenience of field assembly.

FIG. 9 is a perspective view of an angle line assembly column according to another embodiment of the present invention, FIG. 10 is a perspective view of an angle line assembly column shown in FIG. 9, and FIG. 11 is a view of an angle line assembly column shown in FIG. 9. Top view.

As shown, the angle type line assembly pillar 1000 ′ according to another embodiment of the present invention is an example in which the beam is made of H-shaped steel.

The primary main angle 100, the secondary bar 210, the band reinforcing bar 220, the support bracket 300, the cross-shaped joint beam (T) and the secondary main angle 800 are the same as the embodiment of Figure 1 and repeated The description will be omitted.

In this embodiment, the cross-shaped splicing beam T is implemented in the form of H-beams, and the connection with the H-beams is made.

The embodiments of the present invention disclosed in the specification and the drawings are only specific examples to easily explain the technical contents of the present invention and aid the understanding of the present invention, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention can be carried out in addition to the embodiments disclosed herein.

1000, 1000 ': Angle type prefabricated column
100: primary angle
210: auxiliary muscle 220: band reinforcing bar
300: support bracket 400: first composite beam connecting body
500: second composite beam connecting member 800: secondary secondary angle

Claims (8)

Four primary main angles, each of which is bent at an angle of 90 ° and is vertically spaced apart from each other at a corner position of the column as an arc-shaped angle;
A plurality of auxiliary muscles arranged in parallel with the four primary main angles;
A cross-shaped joint beam provided between the four primary main angles to fix the composite beam; And
An angle-type pre-assembly column including a support bracket for supporting the cross-beams by coupling so as to connect between the four primary main angles. The method according to claim 1,
The cross-shaped junction beam,
A first composite beam connector disposed to pass through the pillar; And
An angle-type pre-assembled column disposed to pass through the pillar, the second composite beam connecting body is vertically connected to the first composite beam connecting body. The method according to claim 2,
The first composite beam connector,
As a prefabricated composite beam structure for fixing a large composite beam connected to the pillar,
A pair of first web plates; And
A first lower plate coupled to a lower flange of the first web plate to form a bottom,
The second composite beam connector,
As a prefabricated composite beam structure for fixing a small composite beam connected to the pillar,
A pair of second web plates; And
An angle-type pre-assembled pillar comprising a second lower plate coupled to the lower flange of the second web plate to form a bottom. The method according to claim 3,
The first web plate and the second web plate, respectively,
An inner upper flange bent horizontally inward in a portion located inward of the pillar,
Angle prefabricated column characterized in that it comprises an outer upper flange that is horizontally bent in the outward direction in a portion located outside of the pillar. The method according to claim 3,
And the first lower plate and the second lower plate each have a through hole at a portion passing through the center of the pillar. The method according to claim 3,
The first composite beam connector,
And a pair of connection plates connected to the opposite second web plate inside a surface to which the second web plate is attached. The method according to claim 3,
Further comprising four secondary angles extending the four primary angles,
The four primary angles,
Is formed in a length corresponding to the height of the deck surface formed by the composite beam,
The secondary main angle is an angle-type pre-assembled pillar, characterized in that connected via a separation bracket spaced apart a predetermined distance from the end of the primary angle to the column. The method according to claim 1,
The angle type pre-assembly column further comprises a cover plate disposed outside the primary main angle of the portion where the cross-beams are arranged.

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