KR101875015B1 - Prefabricated src structure for column and the manufacturing method thereof - Google Patents

Abstract

The present invention relates to a column structure for constructing a column of a SRC structure, wherein the column structure includes at least two rectangular fittings, a vertical reinforcing bar provided on an outer surface of the rectangular fitting, and four corner steels Wherein the rectangular fixture comprises four horizontal steels forming respective side faces of a rectangular cross section and four fixing bases forming respective corners of the rectangular cross section, wherein the fixing bases are orthogonal to each other at imaginary extending intersections A pair of side plates to which horizontal steel bars are attached, and a connecting plate connecting the inner ends of the side plates to each other, and has a concave shape inward.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pre-assembled SRC column structure,

More particularly, the present invention relates to a prefabricated SRC column structure that can be manufactured in advance at sites other than the site to simplify field work and systematize construction work, and And a method of manufacturing the same.

Prefab construction method of rebar is continuously carried out as a part of system construction of construction work or more industrialization of construction work by ensuring shortening of air, improvement of working environment, simplification of work, safety and so on. Is pursued.

In the reinforced pre-fabrication method, especially in the case of the reinforced bar precast column structure, it is possible to simultaneously perform the construction of various processes by securing the independency, so that the air can be greatly shortened.

FIG. 1 is a perspective view showing a steel column for a SRC column pre-assembled with a steel reinforcing bar proposed by Patent Registration No. 10-0898283.

The steel column for the SRC column in which the reinforcing bars are pre-assembled comprises an H-shaped section 100; A gusset plate (150) welded to the web and flange of the H-shaped section (100) for bolting the steel frame; A connecting steel bar 140 welded to the H-shaped steel pipe 100 to surround the H-shaped steel pipe 100, the plurality of connecting steel bars 140 being installed at predetermined intervals along the longitudinal direction of the H-shaped steel pipe 100; A main reinforcement 160 connected to the connection reinforcing bars 140 and the reinforcing bars 170 and pre-assembled; And a band reinforcing bar 170 fastened and fixed to the cast iron 160 to form a structure that winds the cast iron reinforcement 160.

However, the steel column for the SRC column in which the reinforcing bars are pre-assembled is difficult to stably fix the vertical steel bars, and the steel skeleton of expensive steel is used as the basic skeleton. This not only lowers the economical efficiency, There is a problem in that there is a structural limitation of the arrangement of the columns, and in addition, there is a problem in that the efficiency of the section is deteriorated because the steel frame is disposed at the center of the column.

In order to solve such a problem, an invention named 'pre-assembled steel-reinforced concrete structure using a steel sheet' of Registration No. 10-1381866 has been disclosed as shown in FIG.

As shown in FIG. 2, the prefabricated steel frame reinforced concrete structure using the a-shaped steel is vertically disposed at the corners of the columns to serve as the main rods of the columns, and the corners are arranged to face the corner of the columns Four a-shaped beams 10; A plurality of band bars (20) joined to the outside of the a-shaped steel (10) while wrapping the outside of the a-shaped steel bars and being welded to the outside of the a-shaped steel pipe (10) A plate-like coupling plate (30) coupled to a position at which at least two sides of the column are provided with beams for joining the beams to the column, and both end faces being coupled to the outer faces of the a-shaped beams (10); And a reinforcing plate 40 having both ends joined to the inside of the coupling plates 30 so as to form a plane triangle with the coupling plate 30.

The prefabricated steel reinforced concrete structure using the above-mentioned a steel has a structure in which a section steel is disposed at each corner of the column to improve the sectional efficiency of the steel material, and there is no distinction between the steel shaft and the weak shaft, .

However, in the pre-assembled steel-reinforced concrete structure using the a-shaped steel, a three-dimensional structure having a rectangular cross-section is formed while sequentially attaching the a-shaped steel 10 to the engaging plate 30 on four sides, If it is not used, the rectangular cross section can not be formed due to the load of the relatively heavy-weight a-shaped steel, and the rectangular cross-section can not be formed.

KR 10-0898283 B1 KR 10-1381866 B1

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a structure capable of supporting self-sustaining by securing structural rigidity while maintaining the advantages of the prior art, And an object of the present invention is to provide a prefabricated SRC column structure having a structure that facilitates pre-assembly of reinforcing bars without using a separate jig or a pseudo-structural member, and a manufacturing method thereof.

According to a preferred embodiment of the present invention to solve the above-described problems, the present invention comprises at least two rectangular fixing frames, a vertical reinforcing bar provided on an outer surface of the rectangular fixing frame, and four corner steel members, The fixed frame is composed of four horizontal steels forming each side face of a rectangular cross section and four fixing bases forming respective corners of the rectangular cross section, And a connection plate connecting the respective side plates. The pre-assembled SRC column structure has a concave shape inward. At this time, further inclined rods can be installed between the horizontal rivers orthogonal to each other.

According to another embodiment of the present invention, there is provided a method of manufacturing a rectangular fixture comprising: a) fabricating a rectangular fixture; b) disposing two corner steels on the bed, spaced apart from each other, and welding the square steel frame to the corner steel to fix it vertically; c) attaching the remaining two corner steel members and a plurality of vertical steel bars to the exposed three sides of the rectangular steel frame, and then welding and attaching the tie bar support to the upper side plate of each corner steel member; d) rotating the square fixture so that one side of the square fixture placed on the bed is at the top and then fixing and attaching the vertical reinforcement and tie bar support to the one side in the same manner as in step c); and e) installing a tie bar between the tie bar supports facing each other.

The present invention can fix the corner steel and the vertical steel bars in a state where the rectangular steel frame is self-supported by using the joining relationship between the corner steel and the rectangular steel frame, so that no separate jig or a stiffening member is required, Making it very easy to manufacture.

The SRC column structure of the present invention can be applied to any size of the column section to be constructed because corner steel made by roll-forming a thin steel plate can be used, and a wide side plate of the steel plate can be generated in the corner steel Thereby preventing the deformation of the corner steel of the thin steel sheet as described above, thereby making it possible to manufacture a prefabricated SRC column structure having an effective cross section at an economical cost.

In addition, by using the tie bar support, it is possible to facilitate the installation of the tie bars for preventing the buckling of the vertical reinforcing bars and to form the concave and convex portions on the side plate of the corner steel, thereby improving the adhesion of the concrete having a thin coating thickness. Thereby making it possible to fabricate a high-quality pre-assembled SRC column structure.

FIG. 1 is a perspective view of a steel column for a SRC column pre-assembled with a conventional steel.
FIG. 2 is a perspective view and a plan view showing a pre-assembled steel-reinforced concrete structure according to another prior art.
3 is a perspective view and a plan view showing a prefabricated SRC column structure according to an embodiment of the present invention.
FIGS. 4 and 5 are views showing each embodiment of the rectangular fixture constituting the pre-assembled SRC column structure.
FIG. 6 is an exploded perspective view and partial detail view showing the engagement relationship of the rectangular fixing frame.
FIG. 7 is a partial detail view showing an embodiment of a means for installing a vertical reinforcing bar in the rectangular fixing frame.
8 is a partial detail view showing an example in which a tie bar is installed in the vertical reinforcing bars.
9 to 13 are a perspective view and a cross-sectional view showing respective steps of fabricating the prefabricated SRC column structure of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in order to obscure or obscure the technical idea of the present invention due to the detailed description of the known structure in describing the present invention, the description of the structure of the above known structure will be omitted.

FIG. 3 is a diagram illustrating the overall structure and shape of an SRC column structure C according to an embodiment of the present invention, wherein a) is a perspective view and b) is a plan view.

3, the SRC column structure C of the present invention includes at least two rectangular fixture 510, a vertical reinforcing bar 520 installed on the outer surface of the rectangular fixture 510, And four corner steel members 500 installed at the edges of the fixed frame 510 as a base.

The edge steel 500 is located at each corner of the SRC column structure C and has an opening 503 formed in the longitudinal direction.

단면의 형상을 가지면서 상기 접합리브(502)의 사이에 개구(503)가 형성된다. 그러나 단면규격이 허용하는 범위 내에서는 모서리 강재(500)를 접합리브(502)가 형성되지 아니한 기성제품의 앵글로도 구성시킬 수 있음은 물론이다.For example, the edge steel sheet 500 is preferably formed by roll-forming a thin steel sheet so that the both side plates 501 are perpendicular to each other, and a joining rib 502 bent inward is formed at the end of each of the side plates 501 Equipped

An opening 503 is formed between the joining ribs 502 while having a cross-sectional shape. However, it is needless to say that the edge steel 500 may be formed as an angle of the finished product in which the joining ribs 502 are not formed, within the range permitted by the sectional specification.

This edge steel material 500 is formed on the entire length of the SRC column structure C so that it can have self-supporting rigidity with respect to the SRC column structure C and also acts as a steel material of the SRC column, Allows to reduce the number of installations.

The rectangular fixture 510 serves not only as a means for installing the vertical steel bars 520 while maintaining the overall shape of the SRC column structure C but also facilitates the installation of the edge steel 500, 500), it is possible to manufacture the SRC column structure C without a separate jig or a stiffening member.

FIGS. 4 and 5 show respective embodiments of the square fixing frame 510 constituting the pre-assembled SRC column structure C, and FIG. 6 is a perspective view showing the coupling relationship between the respective constituent elements constituting the rectangular fixing frame in detail A perspective view and a partial detail view of a part of these parts for explaining;

As shown in FIGS. 4 and 5, the rectangular fixing frame 510 includes four horizontal flat steel plates 511, which are disposed opposite to each other to form respective side surfaces of a rectangular cross-section, And four fixing bars 512 which form the corners of the rectangular cross-section.

Each horizontal river 511 is installed in a direction orthogonal to a column constructed by concrete pouring and is arranged so as to form a rectangular cross section having the same shape as the cross section of the column, As shown in Fig.

At this time, a slanting rod 513 may be further provided between the respective horizontal steels 511. The inclined rods 513 increase the sectional rigidity to prevent the rectangular fixture 510 from twisting during the manufacturing process of the SRC column structure C or during the transportation and the column construction, Prevent deformation and prevents the concrete of the column from being blown out in the lateral direction by the compressive force of the vertical load during the use of the column.

The horizontal flange 511b and the vertical flange 511a may be formed in various shapes so as to facilitate the installation of the slope rod 513 while having sufficient rigidity, It is composed of L-shaped steel formed vertically.

Particularly, when the end face of the L-shaped steel is joined to the fixing table 512, the horizontal flange 511b of the L-shaped steel protrudes inside, that is, toward the center of the SRC columnar body C, and the vertical flange 511a protrudes upward The inclined rods 513 are arranged on the upper surface of the horizontal flange 511b in a state where they are not welded to the horizontal river 511, The movement in the outward direction is limited by the flange 511a, so that the operation of attaching the slanting rod 513 can proceed more easily.

Each of the four horizontal hydrostatic steels 511 is fixed to the fixing table 512 to form a unitary rectangular fixing frame 510.

The fixing table 512 includes a pair of side plates 512a and a connecting plate 512b for connecting the side plates 512a, as shown in Figs.

The side plates 512a are welded to the end face of the horizontal steel 511 to enable the installation of the horizontal steel 511 and to provide a welding face for easy attachment of the edge steel 500.

In addition, the side plates 512a disperse a concentrated load that may be generated between the horizontal steel 511 and the edge steel 500 to prevent local deformation of the edge steel 500 formed of a thin steel plate.

As shown in FIG. 4, the pair of side plates 512a may be connected to each other by a connecting plate 512b in a state where the side plates 512a are spaced apart from each other, As shown in FIG. 5, the connecting plate 512b may be provided at an intermediate portion of the side plates 512a in a state where the inner ends of the side plates 512a are in direct contact with each other.

Therefore, as shown in the enlarged view in FIG. 4 (b), the fixing table 512 according to the embodiment of the present invention is arranged so that the pair of side plates 512a are perpendicular to each other at the imaginary extended intersection o, And the plate 512b has a concave shape inward by connecting the inner ends of these side plates 512a. A corner steel member 500 is attached to a concave portion of the fixing table 512 formed in this way.

The fixing table 512 according to the latter embodiment can be suitably applied in the case where a more sufficient bonding surface is required due to the use of the horizontal flat steel 511 having a large cross section.

As described above, since the end surface of the horizontal steel 511 is vertically welded to the side plate 512a of the fixing table 512, the upper and lower and left and right widths of the side plate 512a can easily perform the above welding operation (S) can be formed.

For example, in the case where the horizontal steel 511 is formed of the L-shaped steel, the side plates 512a of the fixing table 512 forming the welded surfaces thereof are formed so that the widths of the upper, The flange 511a and the horizontal flange 511b of the flange 511b and the flange 511b of the flange 511b and the flange 511b.

The width t1 of the clearance space s formed on the outer surface of the vertical flange 511a is equal to the width t1 of the horizontal plate 511a, The outer diameter t2 of the vertical reinforcement 520 attached to the tie bar 520 facilitates the construction management for maintaining the thickness of the cover and facilitates the installation of the tie bar support 531 described later.

On the other hand, when the fixing table 512 is joined to the edge steel 500, the opening 503 formed in the edge steel 500 is closed so that the edge steel 500 and the fixing table 512 A concrete flow hole (not shown) may be further provided on the connection plate 512b of the fixing table 512 to enable the concrete to be tightly filled with respect to the closed space.

A plurality of vertical reinforcing bars 520 are installed on the outer surface of the fixing table 512, specifically, the outer surface of the horizontal steel 511 (the outer surface of the vertical flange 511a when the horizontal steel 511 is formed of L- do.

The vertical reinforcing bars 520, which are the main roots of the pillars to be constructed in the future, can be fixed to the outer surface of the horizontal steel 511 by welding by welding the outer surface of the fixing table 512. However, 7, the position of the vertical reinforcing bar 520 is maintained by using the fixing ring 521.

When the vertical reinforcement 520 is fitted into the fixing ring 521 and the fixing ring 521 is welded to the horizontal steel 511, the flow of the end of the vertical reinforcement 520 is facilitated, So that it can proceed smoothly.

Tie bars 530 in the horizontal direction may be installed between the upper and lower fixing bars 512 at regular intervals on the vertical reinforcing bars 520 fixed to the fixing table 512. The tie bars 530 prevent buckling of the vertical bars 520 to improve the compressive strength of the columns and allow the columns to behave flexibly.

 The tie bar 530 may be configured to have a pair of cross bars while surrounding the vertical reinforcing bars 520 facing each other. Preferably, the tie bar 530 may have a cross shape as shown in FIG. 8, A tie bar support 531 for pressing the outer surface of the vertical steel bar 520 while welding is attached to the upper surface of the tie bar support base 531 and a tie bar 530 is installed between the tie bar support bases 531 facing each other.

The tie bar support 531 not only allows efficient installation of the tie bar 530 but also forms a concavity and convexity on the side plate 501 of the corner steel member 500, Increases adhesion and increases synthesis effect.

The structure of the SRC column structure (C) of the present invention described above has been described. FIGS. 9 to 13 are a perspective view and a cross-sectional view showing the most preferred embodiment of the manufacturing method for the SRC column structure (c) to be.

The method for manufacturing the SRC column structure C according to the embodiment includes: a) fabricating the rectangular fixture 510; b) placing two corner steel members 500 on the bed B while being spaced apart from each other, and then vertically fixing the rectangular steel frame 500 by welding the square fixing frame 510; c) The remaining two corner steels 500 and a plurality of vertical bars are installed on the exposed three sides of the rectangular fixture 510, and then the tie bar supports (not shown) are mounted on the upper surface of the side plate 501 of each corner steel 500 531) are welded and attached; d) After rotating the rectangular fixing frame 510 so that one side of the rectangular fixing frame 510 placed on the bed B is positioned on the upper side, a vertical reinforcing bar 520 and a tie bar supporting frame 531 fixing and adhering in the same manner as in step c); e) installing a tie bar 530 between the tie bar supports 531 facing each other.

Each of these steps will be described in detail as follows.

a) The rectangular fixture 510  Producing;

The rectangular fixing frame 510 is manufactured so that each end of the four horizontal river 511 is connected to the fixing block 512 to form a rectangular cross section. A slope rod 513 may be further provided between each horizontal river 511 that is orthogonal to each other and a concrete flow hole may be provided in the connection plate 512b depending on the size of the fixing table 512.

b) Bed (B) on  The two edge steels 500 are spaced apart from each other Placed  After that, in the edge steel material 500 The rectangular fixture 510  Welded vertically Fix  Step {see FIG. 9};

단면 형상의 것을 기준으로 하여 설명한다.After the bed (B) is installed, two corner steel members (500) are disposed on the upper surface of the bed (B). The edge steel material 500 may be an angle, but in this case, a joining rib 502 is bent inward at the end of the two side plates 501

Sectional shape will be described with reference to Fig.

The spacing of the edge steel (500) coincides with the spacing between the two side plates (512) of the rectangular fixing frame (510).

After the corner steel 500 is placed, the rectangular fixing frame 510 is positioned so that the joining rib 502 of the corner steel 500 contacts the side plate 512a of the fixing table 512, The rectangular fixing frame 510 is fixed to the edge steel 500 so as to stand vertically. Therefore, a jig or a hinged member for vertically setting the rectangular fixing frame 510 is not necessary.

The spacing of the rectangular fixtures 510 is preferably set at intervals of about 2 meters, but is specifically set according to the structural design such as the size of the pillars.

c) the rectangular fixture 510, of  With respect to the exposed three sides, the remaining two edge steel members 500 and the plurality of vertical steel bars 520, of  (Refer to FIGS. 10 and 11) of attaching a tie bar support 531 to the upper surface of the side plate 501 of each corner steel member 500 after installation;

The rectangular fixing frame 510 welded to the vertically installed corner steel member 500 placed on the bed B is exposed to the outside except for one side placed on the bottom of the bed B, The other two corner steel members 500 are welded to the fixing member 512 of the rectangular fixing frame 510 and the plurality of vertical reinforcing bars 520 are fixed by using the horizontal steel member 511 of the fixing member 512 .

Although the order of the corner steel 500 and the vertical steel bars 520 need not be determined in particular, the corner steel 500 is first welded to the fixing table 512 to prevent the square fixing tool 510 from being shaken It is desirable to proceed with the installation work of the vertical reinforcing bars 520 on the three sides.

When the installation of the corner steel member 500 and the vertical steel bar 520 is completed, the tie bar support 531 is welded and attached to the upper surface of the side plate 501 of each corner steel member 500. At this time, the end of the tie bar support 531 attached to the side plate 501 is sufficiently long so as to form irregularities on the upper surface of the side plate 501, thereby enhancing the adhesion force between the concrete to be laid in the future. The spacing of the tie bar supports 531 is preferably about 30 cm.

d) bed (B) on Placed  The rectangular fixture 510 of  The rectangular fixture 510 is positioned such that one side is positioned at the upper side, of  After rotating the vertical reinforcement 520, and  Fixing and attaching the tie bar support 531 in the same manner as in step c) (see FIG. 12);

When the installation of the corner steel 500, the vertical bar 520 and the tie bar support 531 on the three sides of the rectangular fixing frame 510 is completed, the rectangular fixing frame 500, which is not exposed by being in contact with the bed B, The vertical reinforcing bars 520 are fixedly installed on the surface of the rectangular fixing frame 510 so that one side of the vertical reinforcing bars 510 is exposed and positioned on the upper surface of the rectangular reinforcing bars 510. When the installation of the vertical reinforcing bars 520 is completed, The tie bar support 531 is welded to the upper surface of the side plate 501 of each edge steel material 500 so that the outer surface of the tie bar 520 is pressed.

e) Opposed Taiba  Between the supports 531 The tie bar 530  Installation step {refer to FIG. 13};

When the installation of the tie bar supports 531 to the four surfaces is completed, a tie bar 530 is provided between the tie bar supports 531 opposed to each other to complete the fabrication of the pre-assembled SRC column structure of the present invention.

The tie bar 530 has hooks 530a formed at both ends and the hooks 530a are fastened to the tie bar supports 531 so that the installation is easily completed. The shape of the hook 530a is not limited to the hook 530a of the tie bar 530. The shape of the hook 530a is sufficient if the hook 530a can be easily attached to the tie bar 530 on both sides. .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious that it will be possible to carry out various modifications thereof. It is therefore intended that such modifications are within the scope of the invention as set forth in the claims.

500; Edge steel 501; shroud
502; A joining rib 503; Opening
510; Square fitting 511; Horizontal river
511a; A vertical flange 511b; Horizontal flange
512; A fixing table 512a; Side plate
512b; Connection plate 513; Sloping rods
520; Vertical bars 521; Retaining ring
530; Tie bar 530a; hook
531; Tie bar support C; Prefabricated SRC column structure
s; Free space face B; Bed

Claims (6)

A vertical reinforcing bar 520 and four corner steels 500 installed on an outer surface of the rectangular fixing frame 510,
The rectangular fixing frame 510 includes four horizontal bars 511 forming four sides of a rectangular cross section and four fixing bars 512 forming the corners of the rectangular cross section,
The fixing table 512 includes a pair of side plates 512a which are perpendicular to each other at an imaginary extension intersection o and on which a horizontal river 511 is provided and a connecting plate 512b for connecting the side plates 512a ) Having an inner concave shape,
A slope rod 513 is further provided between each horizontal river 511 orthogonal to each other and the horizontal river 511 is formed of an L-shaped steel in which a horizontal flange 511b and a vertical flange 511a are perpendicular to each other, Wherein the flange (511b) is installed on the side plate (512a) of the fixing table (512) in a shape protruding inward so that the slope rod (513) can be placed thereon. delete delete The side plate (512a) of the fixing table (512) according to claim 1, wherein the width of the side plates (512a) of the fixing table (512) is set such that the width between the upper, And the width t1 of the clearance space s formed on the outer surface of the vertical flange 511a coincides with the outer diameter t2 of the vertical steel bar 520. [ Prefabricated SRC column structures. The edge steel according to claim 1, wherein the edge steel (500) is formed such that the both side plates (501) are perpendicular to each other, and the joining ribs (502) bent inward are provided at the ends of the side plates Prefabricated SRC column structure. In the method for manufacturing the SRC column structure (C)
a) fabricating the rectangular fixture 510;
b) placing two corner steel members 500 on the bed B while being spaced apart from each other, and then vertically fixing the rectangular steel frame 500 by welding the square fixing frame 510;
c) The remaining two corner steel members 500 and the plurality of vertical steel bars 520 are installed on the exposed three sides of the rectangular fixing frame 510, Welding and attaching the bar support 531;
d) After rotating the rectangular fixing frame 510 so that one side of the rectangular fixing frame 510 placed on the bed B is positioned on the upper side, a vertical reinforcing bar 520 and a tie bar supporting frame 531 fixing and adhering in the same manner as in step c);
and e) installing a tie bar (530) between the tie bar supports (531) opposed to each other.

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