WO2017047834A1

WO2017047834A1 - Prefabricated reinforcing bar column

Info

Publication number: WO2017047834A1
Application number: PCT/KR2015/009653
Authority: WO
Inventors: 강병구
Original assignee: (주)씨지스플랜
Priority date: 2015-09-15
Filing date: 2015-09-15
Publication date: 2017-03-23

Abstract

The present invention relates to a prefabricated reinforcing bar column comprising: four main bars which are vertically disposed and spaced apart from each other in corner positions of a column; a plurality of auxiliary bars which are vertically disposed between the four main bars; a plurality of hoops which cover the outer sides of the main bars and are coupled in multiple steps on the outer sides of the main bars; a main bracket which is disposed so as to have L-shaped steels form a square at a height where a beam is installed so as to enable one surface thereof to be secured to the upper surface or the lower surface of the beam, and which has each corner thereof coupled to the inner sides of the four main bars by means of welding; coupling brackets which are disposed so as to have L-shaped steels form a square at the upper ends and the lower ends of the main bars, and which have each corner thereof coupled to the inner sides of the four main bars by means of welding; and first coupling bolts and first coupling nuts which couple, in a vertical direction, the coupling brackets that are facing each other. According to the present invention, independence in construction is secured by welding main bars of a column with a main bracket and coupling brackets, and a system enabling the preconstruction of a beam is obtained, thereby minimizing the use of manpower on site and markedly reducing processes on site, and thus an effect of shortening construction time and reducing management factors may be expected.

Description

Rebar prefabricated columns

The present invention relates to a pillar, and more particularly to a reinforcing rod assembly column.

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, that is, the structure or product can be manufactured in the factory and can be constructed simply and quickly. 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.

1 is a perspective view showing a conventional column reinforcing bar joint. As shown in Figure 1, the loss of the reinforcing bar occurs at the site joint of the column head. Therefore, there is a need for a construction method that can secure economic feasibility by minimizing the loss of reinforcing bars in the field joint and optimizing the application of the bracket connecting the pillars and beams.

It is an object of the present invention to provide a rebar prefabricated column that can improve the efficiency of plant construction and workability of the site.

In order to achieve the above object, the rebar prefabricated column according to an embodiment of the present invention is four main bars spaced vertically spaced from each other at the corner position of the column; A plurality of auxiliary muscles disposed vertically between the four main roots; A plurality of strip reinforcing bars coupled to the outside of the main bars in multiple stages while surrounding the outside of the main bars; A main bracket disposed at a height at which the beam is installed so that one surface thereof is seated on the upper surface or the lower surface of the beam to form a quadrangle, and each corner welds to the inner side of the four main roots; A coupling brackets disposed at the upper and lower ends of the main roots to form a square and each corner welds to the inner sides of the four main roots; And a first fastening bolt and a first fastening nut fastening the coupling brackets facing each other in a vertical direction.

Here, the main bar, the secondary bar and the band reinforcing bar, each may be a welding rebar.

In addition, the coupling brackets, a plurality of reinforcing plates for reinforcing the coupling brackets from the outside; And a second fastening bolt and a second fastening nut fastening the reinforcing plates and the coupling bracket in a horizontal direction.

In addition, the reinforcing plate may be disposed in the space between the main and auxiliary muscles, respectively.

Furthermore, when the cross section of the pillar is reduced in the upper side, the four secondary main roots vertically spaced apart from each other inside the main root; And the a-beams are arranged to form a square in the inner side of the main bracket, each corner may further include a sub bracket (sub bracket) for welding welding to the inner side of the four secondary main roots.

Furthermore, in the case of the rebar prefabricated pillar disposed on the foundation, the coupling bracket disposed at the bottom thereof is disposed so that the a-beams form a rectangle so that the lower surface is seated on the upper surface of the foundation, and the first fastening bolt may be an anchor bolt. .

In addition, the reinforcing bracing reinforcing bar may further include a reinforcing bracing reinforcing bar that is coupled to the end with an X-shape inside the two adjacent main bars to prevent buckling.

According to the rebar prefabricated column according to an embodiment of the present invention,

First, the main part of the column is welded with the main bracket and the coupling bracket to secure the independence of construction and to install the beams, minimizing the use of on-site manpower and significantly reducing the process of the site. You can expect the effect.

Second, after manufacturing the pillar, which is the main structure of the building structure, in the factory, which is the same method as the steel structure, using the reinforcing bars, the reinforcement column in the form of a finished product can be installed in the field.

Third, the application of the main bracket connecting the column and beam ensures precision and seismic resistance, and the rebar arrangement is arranged to the edge of the column to facilitate the penetration of the main bracket, thereby improving the construction and construction of the site.

Fourth, it is possible to reduce the amount of steel of the unnecessary overlapping joint by replacing the conventional field overlapping joint with a coupling bracket.

Fifth, by applying the first fastening bolt and the first fastening nut of the steel structure type can achieve the construction and economical at the same time.

Sixth, the possibility of the quantity falling short of the bolt joint criteria due to the application of the coupling bracket can be reinforced by placing the first fastening bolt and the first fastening nut inside the coupling bracket.

Seventh, the reinforcing plate, the second fastening bolt and the second fastening nut may be used to reinforce the amount of steel in the coupling bracket.

Eighth, even when the cross section of the column decreases from the upper side, it is possible to continuously construct the reinforcement prefabricated column using the auxiliary main bar and the auxiliary bracket.

Ninth, even when contacting the pre-assembled pillar and the base can be fastened to the bottom of the main bracket and the base with an anchor bolt.

Tenth, when the construction load is concentrated in the construction process, it is possible to prevent the situation that the reinforcement yield of the column reinforcement by placing the reinforcing bracing reinforcement inside the main reinforcing bar.

1 is a perspective view showing a conventional column reinforcing bar joint.

Figure 2 is a front view showing a reinforcing rod assembly column according to an embodiment of the present invention.

3 is a perspective view around the main bracket illustrated in FIG. 2.

4 is a cross-sectional view of A-A shown in FIG.

5 is a perspective view of the coupling bracket shown in FIG.

6 is a cross-sectional view of the coupling bracket shown in FIG. 5.

7 is an exploded perspective view of the coupling bracket shown in FIG. 5.

8 is a front view showing a reinforcing rod assembly column according to another embodiment of the present invention.

9 is a perspective view around the auxiliary bracket shown in FIG. 8.

FIG. 10 is a front view illustrating a case where the reinforcing line assembly column is in contact with a foundation. FIG.

11 is a perspective view of a rebar prefabricated pillar according to another embodiment of the present invention.

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.

2 is a front view showing a rebar prefabricated pillar according to an embodiment of the present invention, Figure 3 is a perspective view of the surrounding main bracket shown in Figure 2, Figure 4 is a cross-sectional view of AA shown in Figure 2, Figure 5 6 is a cross-sectional view of the coupling bracket shown in FIG. 5, FIG. 7 is an exploded perspective view of the coupling bracket shown in FIG. 5.

1 to 7, the reinforcing bar prefabricated column (PC) includes four main bars 100, a plurality of auxiliary bars 200, a plurality of band bars 300, a main bracket 400, The coupling bracket 500, the first fastening bolt 610, and the first fastening nut 620 are included.

The four main roots 100 are vertically spaced apart from each other at the corner positions of the column. The plurality of auxiliary muscles 200 are vertically disposed between the four main roots 100.

As shown in FIG. 5, the steel bars of the main rod 100 and the subsidiary muscle 200 are concentrated at the corners of the reinforcing wire assembly column PC, and the main bracket 400 and the main bracket 400 to be described later. To reduce the interference caused by joining, to maximize the tensile strength of the column and to ensure structural stability.

The plurality of strip reinforcing bars 300 are coupled in multiple stages to the outside of the main bars 100 while surrounding the outside of the main bars 100.

Here, the main bar 100, the auxiliary bar 200 and the band reinforcing bar 300 uses a welding rebar, respectively. That is, by using the conventional reinforcing bars (SD500W, SD400W, etc.) to eliminate the use of conventional reinforcing bars to ensure the independence and workability by welding the main bar 100, the auxiliary bar 200 and the band reinforcing bar (300).

Welding reinforcing bars are specially manufactured to increase welding carbon 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 case of general reinforcing bar, undercut phenomenon occurs that the strength is weakened. However, in case of welding bar, there is no problem in the case of welding bar.

As shown in FIG. 3, the main bracket 400 is disposed such that the a-beams form a square at a height at which the beam B is installed so that one surface thereof is seated on the upper or lower surface of the beam B, and each corner has four main roots ( 100) Weld on the inside. With the application of the main bracket 400 connecting the reinforcing wire assembly column (PC) and the beam (B), the arrangement of the reinforcing bars is arranged to the corner of the column as much as possible to facilitate the penetration of the main bracket (400). The construction of the site can be improved.

5 to 7, the coupling bracket 500 is disposed so that the a-beams form a quadrangle at the top and bottom of the main rod 100, and each corner is welded to the inner side of the four main roots.

In this case, the coupling bracket 500 includes a plurality of reinforcing plates 510, a second fastening bolt 520, and a second fastening nut 530.

The plurality of reinforcing plates 510 reinforce the coupling brackets 500 from the outside, and the second fastening bolt 520 and the second fastening nut 530 may reinforce the reinforcing plates 510 and the coupling brackets 500. Tighten in the horizontal direction. The coupling bracket 500 has a fastening hole 500b formed in the horizontal direction, and a fastening hole 510a is formed in the reinforcing plate 510 so that the second fastening bolt 520 penetrates.

The reinforcing plate 510 is disposed in the space between the main root 100 and the auxiliary root 200, respectively. The reinforcing plate 510, the second fastening bolt 520, and the second fastening nut 530 may be used to reinforce the amount of steel in the coupling bracket.

The first fastening bolt 610 and the first fastening nut 620 fasten coupling brackets 500 facing from the upper side and the lower side in the vertical direction. The coupling bracket 500 has a fastening hole 500a formed in the vertical direction so that the first fastening bolt 610 penetrates. The possibility that the quantity is less than the bolt joint criterion due to the application of the coupling bracket 500 may be reinforced by disposing the first fastening bolt 610 and the first fastening nut 620 inside the coupling bracket 500.

8 is a front view showing a rebar prefabricated pillar according to another embodiment of the present invention, Figure 9 is a perspective view around the auxiliary bracket shown in FIG.

As shown in FIGS. 8 and 9, when the cross section of the pillar decreases from the upper side, it further includes four auxiliary roots 110 and sub brackets 410.

The auxiliary main 110 is spaced vertically apart from each other inside the main root 100. The secondary main 110 may be welded to the secondary root 200 at the bottom. The auxiliary bracket 410 is disposed so that the a-beams form a quadrangle in the inner side of the main bracket 400, and each corner is welded to the inner side of the four auxiliary roots 110. The auxiliary bracket 410 is seated inside the main bracket 400. That is, even when the cross section of the pillar decreases from the upper side, continuous construction of the reinforcement line assembly pillar (PC) is possible using the auxiliary main rod 110 and the auxiliary bracket 410.

As shown in FIG. 10, in the case of the reinforced line assembly pillar PC disposed on the foundation F, the coupling brackets 500 disposed at the bottom of the steel beams have a quadrangular shape so that the lower surfaces thereof are seated on the upper surface of the foundation F. It is arranged to achieve, the first fastening bolt 610 is replaced by an anchor bolt (A).

11 is a perspective view of a rebar prefabricated pillar according to another embodiment of the present invention. As shown in FIG. 11, the reinforcing bracing rebar 700 may be provided to which the main bar 100 and the end are coupled in an X-shape inside two adjacent main bars 100 to prevent buckling. At this time, the reinforcing bracing reinforcement 700 is used for welding rebar. That is, when the construction load is concentrated in the construction process, by placing the reinforcing bracing reinforcement 700 inside the main bar 100, it is possible to prevent the situation that the reinforcement yield of the column main bar 100 occurs.

Thus, according to the present invention, by welding the main root 100 of the column with the main bracket 400 and the coupling bracket 500 to ensure the construction independence and to minimize the use of field personnel by equipping the beam (B) And since the process of the site is greatly reduced, it can be expected to shorten the construction period and reduce the management factors.

On the other hand, the embodiments of the present invention disclosed in the specification and drawings are merely presented specific examples to easily explain the technical contents of the present invention and help 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.

Claims

Four main roots vertically spaced apart from each other at corner positions of the column;

A plurality of auxiliary muscles disposed vertically between the four main roots;

A plurality of strip reinforcing bars coupled to the outside of the main bars in multiple stages while surrounding the outside of the main bars;

A main bracket having a corner at a height at which the beam is installed so that one surface thereof is seated on the upper surface or the lower surface of the beam, and each corner of which is welded to the inner side of the four main roots;

A coupling brackets disposed at the upper and lower ends of the main roots to form a square and each corner welds to the inner sides of the four main roots; And

Reinforcing rod assembly pillar comprising a first fastening bolt and a first fastening nut for fastening the coupling brackets facing in the vertical direction.
The method according to claim 1,

The main root, the auxiliary root and the band reinforcement,

Reinforcing rod assembly columns, characterized in that each of the welding rebar.
The method according to claim 1,

The coupling bracket is,

A plurality of reinforcing plates for reinforcing the coupling brackets from the outside; And

And a second fastening bolt and a second fastening nut fastening the reinforcing plates and the coupling brackets in a horizontal direction.
The method according to claim 1,

The reinforcement plate,

Reinforcement line assembly pillars, characterized in that disposed in the space between the main and secondary muscles, respectively.
The method according to claim 1,

If the cross section of the column decreases from the top,

Four auxiliary main roots vertically spaced apart from each other inside the main root; And

The a-beams are arranged to form a quadrangle in the inner side of the main bracket, and each corner further comprises a sub bracket (sub bracket) for welding welding to the inner side of the four secondary main bar.
The method according to claim 1,

For rebar prefabricated columns placed on the foundation,

The coupling bracket disposed at the bottom,

Rebar prefabricated columns, characterized in that the a-beams are arranged to form a square so that the lower surface is seated on the upper surface of the foundation, the first fastening bolt is an anchor bolt.
The method according to claim 1,

Reinforcing reinforcing bar reinforcing reinforcing bar is characterized in that the reinforcing bracing reinforcing bar is further provided in the X-shape inside the two adjacent main bars to prevent buckling, the reinforcing bracing reinforcement is a welding reinforcing bar.