KR102169270B1 - Fitting for forming concrete bracket, Concrete bracket for supporting slab of vertical shaft using the same, and construction method thereof - Google Patents

Abstract

According to the present invention, a fixing unit used for the construction of a concrete bracket comprises: a plurality of couplers including a first insertion hole formed on one side to insert a wall-laid rebar fixed to a horizontal or vertical rebar of a wall, and a second insertion hole formed on the other side to insert a laid rebar for a bracket; and a plate including a plurality of through holes having a diameter corresponding to the external diameter of the couplers such that the couplers can be combined. The center of the first insertion hole of the couplers, the through holes of the plate and the second insertion hole is located on a straight line, and the couplers are inserted into the through holes of the plate to be combined in a direction intersecting with the plate. Also, according to the present invention, the concrete bracket is constructed through a method including the following steps of: (1) fixing a wall-laid rebar to a horizontal or vertical rebar of a wall of a vertical unit; (2) inserting an end of an inner wall of the vertical unit of the wall-laid rebar into the first insertion hole of the couplers installed on a fixing unit, thereby combining the fixing unit with the wall-laid rebar; (3) placing concrete for forming a vertical wall while raising a slip form; (4) inserting the laid rebar for a bracket into the second insertion hole, and additionally reinforcing the laid rebar for a bracket with a reinforcing rebar for a bracket; and (5) fixing a bracket mold form to the periphery of the laid rebar for a bracket, and then, placing concrete to complete the concrete bracket.

Description

A fixture for forming a concrete bracket, a concrete bracket for supporting slab of a vertical ball using the same, and a construction method thereof {Fitting for forming concrete bracket, Concrete bracket for supporting slab of vertical shaft using the same, and construction method thereof}

The present invention relates to a fixture for forming a concrete bracket, a concrete bracket for supporting a slab of a vertical ball using the same, and a construction method thereof.

In recent years, as the construction of deep tunnels using urban underground spaces or common wards to accommodate public facilities has increased for the three-dimensional development of cities, a vertical shaft is used as a construction passage during construction, a maintenance passage after construction, and a ventilation port. ) Construction cases are increasing.

Such a vertical hole excavates the excavation hole in the vertical direction from the ground, pours foundation concrete on the bottom of the excavation hole to form the bottom surface, and then installs a formwork along the inner circumferential surface of the excavation hole from the bottom of the excavation hole and pours concrete. It is constructed in the order of forming a vertical wall by repeating the process. Recently, the slip foam method is widely used.

Slip form refers to a form applied to the construction method of completing a structure by continuously assembling reinforcing bars and pouring concrete while raising the formwork upward when the strength of concrete becomes more than the strength that can stand on its own after pouring concrete. The slip foam is generally composed of an upper workbench, an intermediate workbench, and a lower workbench, and a vertical wall is constructed while moving vertically by a hydraulic jack arranged on the main surface.

After the vertical wall is constructed in this way, the slab constituting the floor surface is constructed on each floor, and the slab is generally made of precast concrete in advance, and in order to support the slab from the lower side, from the vertical wall of the vertical sphere to the inside of the vertical sphere It is constructed by placing a precast concrete slab on the upper surface of the bracket installed protruding in the direction.

As such a bracket installation method, after the vertical wall of the vertical sphere is constructed, the vertical wall is drilled to insert an anchor bolt, and a nut is assembled after fastening the bracket to the anchor bolt. 9 is a cross-sectional view of a main part showing a state in which a conventional slab bracket for a vertical sphere is installed on a vertical wall of a vertical sphere and the slab is placed on the upper part of the bracket. 9, a conventional slab bracket 300 for a vertical tool inserts an anchor bolt 321 to expose its end to the vertical wall 1 to fix the anchor bolt 321 to the vertical wall, and then the bracket ( It is assembled so that the end of the anchor bolt 321 exposed to the outside of the vertical wall 1 is fitted into the bolt hole formed in 300), and by fastening the nut 322 to the end of the anchor bolt, it is combined with the vertical wall 1 of the vertical sphere. . In such a conventional slab bracket, since the bracket installation operation proceeds after the vertical wall 1 is constructed, there is a problem that the construction period of the vertical hole increases as much as the working time required for installing the bracket. In addition, since the anchor bolt 321 is inserted by perforating the vertical wall 1 of the vertical sphere, there may be a problem that the strength of the vertical wall 10 decreases during the drilling process for inserting the anchor bolt. ) There is a difficulty in setting the anchor bolt 321 installation position due to interference with the reinforcing bar laid inside.

In order to solve this problem, a method of installing a bracket in the process of constructing the vertical wall of the vertical sphere has also been proposed. 10 is a cross-sectional view of a main part showing a state in which the slab is placed on the upper part of the bracket installed in the process of constructing the vertical wall. The bracket of FIG. 10 is composed of a fixing part 400 and a bracket body 500. The fixing part 400 includes a stud 410 buried in the vertical wall 1 construction process and disposed in a horizontal direction, and the stud side end It is formed of a plate-shaped plate member 420 that is connected and arranged vertically, and the plate member has a bolt 421 for coupling with a bracket body 500 and a nut 422 at the other side where the stud 410 is formed. It is equipped. The bracket body 500 includes a vertical portion 510 that is in close contact with the plate member 420 and disposed vertically, and a horizontal portion 520 connected vertically from the top of the vertical portion 510 to form a horizontally parallel surface. ) And a reinforcing portion 530 vertically coupled to the vertical portion and the horizontal portion, and a bolt hole is formed in the vertical portion 510 in close contact with the plate member 420, and the fixing portion 400 After the bolt 421 of the vertical part 510 penetrates through the bolt hole of the vertical part 510 and is in close contact, the bracket body 500 is fixed to the fixing part 400 by coupling the nut 422 to the bolt 421.

The bracket shown in FIG. 10 is the vertical wall of the vertical wall so that the studs 410 of the fixing part 400 are located inside the vertical wall in the process of continuously constructing the vertical wall from the lower side to the upper side using the slip foam. After fixing and installing the horizontal and vertical reinforcing bars, the vertical wall is constructed while the fixing part 400 is buried in the vertical wall in the process of pouring concrete in the intermediate workbench. After the concrete is cured, the bracket body 500 at the lower workbench By fastening the nut 422 to the fixing part 400, there is a characteristic that it can be installed in accordance with the sequential curing process of the vertical wall 1. Therefore, since the bracket installation work is performed in the construction process of the vertical wall 1, no additional work time is required for the bracket installation, and thus there is an advantage of shortening the construction period of the vertical hole.

However, in the case of this method, the bracket is not formed integrally with the vertical wall, but the bracket body is fixed by bolts and nuts to the fixing part, so the construction quality depends on the tightening condition of the nut, and the slab Since the load is transmitted to the bolt of the fixing part through the bracket body, there is a disadvantage that the bolt of the fixing part should be periodically checked for sag or damage and the loosening state of the nut.

Registered Patent Publication No. 10-2047997 Slab bracket for power tool and construction method Registered Patent Publication No. 10-2026571 Embedded slab bracket and construction method for vertical sphere Registered Patent Publication No. 10-1849940 Bracket structure and construction method thereof Registered Patent Publication No. 10-1737193 Vertical tunnel structure and its construction method Unexamined Patent Publication No. 10-2010-0078347 Vertical sphere segment

The present invention is to solve this problem, by forming a bracket for slab support of a vertical ball of concrete, to reduce the troublesome work and the difficulty of maintenance due to the construction of the steel bracket. The present invention proposes a bracket fixture formed of a coupler and a plate to quickly and accurately connect the reinforcing bars involved in the construction of the concrete bracket for supporting the slab of the vertical sphere, while the concrete bracket formed on the front of the fixture and the vertical wall It is to improve the support of the concrete bracket by expanding the contact area and placing the end of the bracket inside the vertical wall.

According to the present invention, the fixture for forming a concrete bracket has a first insertion hole into which a horizontal reinforcement of a vertical wall or a wall buried reinforcement fixed to a vertical reinforcement is inserted on one side, and a buried reinforcement for a bracket is inserted on the other side. 2 consisting of a plurality of couplers in which insertion holes are formed, and a plate having a plurality of through holes having a diameter corresponding to the outer diameter of the coupler so that the plurality of couplers can be coupled, the first insertion hole of the coupler, the through hole of the plate And the center of the second insertion hole of the coupler is located in a straight line, the coupler is fitted and fixed in the through hole of the plate in a direction perpendicular to the plate, and the coupler is formed of a spring and a wedge provided therein. As a function, the buried wall reinforcing bar inserted into the first insertion hole and the buried reinforcing bar for bracket inserted into the second insertion hole are fixed.

In the middle of the first insertion hole and the second insertion hole of the coupler, a concave portion in which the outer cross section of the coupler is reduced is formed, and when concrete is placed on the wall, concrete is prevented from entering the second insertion hole of the coupler or the through hole of the plate. It is provided with a demoulding form or a finishing tool for.

The plate may be curved parallel to the inner wall of the vertical hole on which the bracket is installed, and a handle may be further provided on the front surface of the plate.

The concrete bracket according to the present invention is constructed using the fixture.

The concrete bracket for supporting the slab of the vertical sphere according to the present invention includes: (1) fixing the wall buried reinforcement to the horizontal or vertical reinforcement of the vertical sphere wall; (2) inserting the inner wall side end of the wall-buried reinforcement into the first insertion hole of the coupler provided in the fixture, and combining the wall-buried reinforcement with the fixture; (3) In order to prevent concrete from entering the coupler and to form a step on the inner wall of the vertical sphere in the direction of the outer wall of the vertical sphere, the demolding foam and the cover plate are combined on the front of the plate of the fixture, or a hexahedral finish is combined. step; (4) pouring concrete for forming a vertical wall while raising the slip foam, and dismantling the demoulding foam or the finishing plate; (5) inserting the buried reinforcing bar for the bracket into the second insertion hole of the coupler, and further reinforcing the buried reinforcing bar for the bracket with a reinforcing bar for the bracket; (6) After fixing the bracket formwork around the embedded reinforcing bar for the bracket, pouring concrete to complete the concrete bracket; is constructed including.

After inserting the inner wall side end of the wall-buried reinforcing bar into the first insertion hole of the coupler provided in the fixture, after combining the wall-buried reinforcing bar and the fixture, fix the wall-buried reinforcing bar to the horizontal or vertical reinforcing bar of the vertical wall. It can also be constructed in a way.

In addition, instead of inserting the embedded reinforcing bar for the bracket into the second insertion hole of the coupler and additionally reinforcing the buried reinforcing bar for the bracket with the reinforcing bar for the bracket, it is composed of a horizontal portion, a vertical portion and a reinforcing portion corresponding to the shape of the bracket. , In the vertical part, a buried hardware for a bracket configured by fixing a connection reinforcing bar inserted into the second insertion hole of the coupler in a direction opposite to the direction in which the horizontal part and the reinforcing part are located may be installed in a manner of coupling to the fixture. , The horizontal part, the vertical part, or the reinforcement part of the embedded hardware for the bracket may be formed with a pouring hole.

In the stage of completing the concrete bracket by pouring concrete after fixing the bracket formwork around the embedded reinforcing bar for the bracket, when the concrete slab is placed after the bracket construction, the end of the bolt or reinforcing bar is inserted and the insert to fix it is inserted into the bracket. Can be formed on top of.

In addition, when fixing the wall buried reinforcement to the horizontal or vertical reinforcing bars of the vertical wall, and when fixing the bracket formwork, the location of the installation is determined by measuring and marking the position by any one of laser, infrared, and radio waves. Can be decided.

In the present invention, since the concrete bracket is formed while constructing the vertical wall of the vertical sphere, there is an advantage that a separate construction period is not required due to the bracket construction.

In addition, since the bracket that supports the slab of the vertical sphere is formed of concrete using a fixture, it not only reduces the work complexity, but also can be constructed with a concrete bracket integrated with the wall, which is advantageous in terms of maintenance even after construction. There is.

And, since the present invention uses a bracket fixture formed of a coupler and a plate, it is possible to quickly and accurately perform the connection work of the reinforcement accompanying the concrete bracket construction.

In addition, in the present invention, since the end of the concrete bracket is located inside the vertical wall, the contact area between the concrete bracket and the vertical wall is enlarged, and the load of the bracket is directly transmitted to the vertical wall, thereby improving the support of the concrete bracket. There is an effect that can be made.

1 is a perspective view of a fixture for forming a concrete bracket according to the present invention
Figure 2 A plan view of a fixture having a curved plate according to the present invention
Figure 3 Conceptual diagram of a concrete bracket construction sequence according to the present invention
Figure 4 A front view and a side cross-sectional view of a demolding foam according to an embodiment of the present invention
5 is a perspective view of a closing tool according to an embodiment of the present invention
Figure 6 A conceptual diagram of a concrete bracket construction flow according to another embodiment of the present invention
Figure 7 A perspective view of a buried hardware for a bracket used in the concrete bracket construction of the present invention
Figure 8 Illustrative view of the combined state of the concrete bracket and the slab according to the present invention
9 Cross-sectional view of the main part of the bracket according to the prior art
Figure 10 Cross-sectional view of the main part of the bracket according to another prior art

The present invention relates to a bracket fixture for forming a concrete bracket, a concrete bracket for supporting a slab formed by using the fixture, and a construction method for forming the concrete bracket for supporting the slab.

The bracket fixture 100 has a first insertion hole 114 into which the horizontal reinforcement 13 of the vertical wall or the wall buried reinforcement 20 fixed to the vertical reinforcement 14 is inserted, and the other side has a bracket A plate having a coupler 110 having a second insertion hole 115 into which the reinforcing bar 150 is inserted, and a plurality of through holes 121 having a diameter corresponding to the outer diameter of the coupler so that the coupler can be coupled ( 120), so that the center of the first insertion hole 114 of the coupler 110, the through hole 121 of the plate, and the second insertion hole 115 of the coupler 110 are located in a straight line, The plurality of couplers are fitted and fixed in the through hole of the plate in a direction perpendicular to the plate, and the coupler is inserted into the first insertion hole by the action of a spring and a wedge provided therein, and the second insertion hole It is to fix the embedded reinforcing bar for the bracket to be inserted.

Figure 1a is a front perspective view of the bracket fixture 100, Figure 1 (b) is a rear perspective view of the bracket fixture 100. In the present invention, the front surface means the inside of the vertical sphere, and the rear surface means the outside of the vertical sphere.

The coupler 110 includes a first connection part 111 in which a first insertion hole 114 is formed and a second connection part 112 in which a second insertion hole 115 is formed, a first insertion hole 114 and a second insertion As a structure in which the balls 115 are connected in a straight line so that they are located in opposite directions, the wall buried reinforcing bar 20 is inserted into the first insertion hole 114 of the first connection part 111, and the second connection part 112 In the second insertion hole 115 of the bracket buried reinforcement 150 is inserted, to couple the wall buried reinforcement 20 and the buried reinforcement 150 for the bracket.

The coupler 110 may be any one that can connect the wall buried reinforcing bar 20 and the bracket buried reinforcing bar 150, but using a one-touch coupler is advantageous in improving workability. The one-touch coupler fixes reinforcing bars inserted into the first and second insertion holes by the action of springs and wedges provided inside the first connection part 111 and the second connection part 112, and the operation method of such a coupler is usually Since it can be easily implemented by a technician by known technology, a detailed description thereof will be omitted.

It is preferable that a concave portion 113 in which the outer cross section of the coupler is reduced is formed between the first and second insertion holes of the coupler 110. Referring to FIG. 1, between the first connecting portion 111 in which the first insertion hole 114 is formed and the second connecting portion 112 in which the second insertion hole 115 is formed, the outer diameter of the first connecting portion and the second connecting portion In comparison, a concave portion 113 with a reduced cross section is formed. The coupler 110 is buried inside the wall when forming the vertical wall. If the concave part 113 is formed, the concave part 113 is also filled with concrete for forming a vertical wall, so that the coupler 100 It is more tightly coupled to the vertical sphere wall, and can more effectively resist the tensile force that may act through the buried reinforcement for the bracket in the future.

The plate 120 has a plurality of through holes 121 having a diameter corresponding to the outer diameter of the coupler so that the coupler can be coupled, and has a flat plate shape having a constant thickness.

A handle 123 may be further provided on the front surface of the plate 120. The handle 123 has an effect of making the operation convenient because it serves as a handle when combining the fixture 100 with the wall buried reinforcing bar 20, and prevents the operator from being injured by the sharp edge of the plate 100. There is also an effect. In addition, since it is formed to protrude from the front surface of the plate 100, when the concrete bracket is formed, the concrete is also cured around the handle, thereby improving the bonding force between the concrete bracket and the fixture.

Coupler 110 and plate 120, the first insertion hole 114 of the coupler 110, the through hole 121 of the plate 120, and the second insertion hole 115 of the coupler 110 The center is positioned on a straight line, and the coupler 110 is coupled in a direction orthogonal to the plate 120. In the coupler 110 and the plate 120, the outer circumferential surface of the coupler 110 is fitted into the through hole 121 of the plate 120, and the outer circumferential surface of the coupler 110 is inserted into the through hole 121 of the plate 120. In the fitted state, the contact portion between the outer circumferential surface of the coupler 110 and the plate hole may be integrally fixed by welding or the like.

As shown in Fig. 2, the plate may be formed in a curved shape according to the cross-sectional shape of the vertical wall. That is, when the vertical sphere has a circular cross section, the plate 120 may also be formed in a curved shape. When the vertical sphere has a circular cross section, since the concrete bracket 200 formed by the fixture is also formed along the circumferential direction along the vertical sphere wall, it is preferable to form the fixture using a plate 120 having a curved shape. Do. When the plate 120 is curved, the coupler 110 is coupled in a normal direction from the center of the through hole of the plate 120 so that the virtual extension line of the coupler 110 crosses the center of the vertical sphere wall.

3 shows a method of constructing a concrete bracket using the fixture according to the present invention.

Horizontal reinforcement (13) and vertical reinforcement (14) for vertical wall formation are placed on the upper workbench of the slip form, while horizontal reinforcement (13) and vertical reinforcement (14) are placed, while the wall buried reinforcement (20) is horizontally reinforced. Or it is fixed to the vertical reinforcement (Fig. 3a). When fixing the wall-buried reinforcing bar 20 to a horizontal or vertical reinforcing bar of a vertical wall, the position of the wall-buried reinforcing bar may be determined by measuring and displaying the position by any one of laser, infrared, and radio waves.

After fixing the wall-buried reinforcing bar 20, by inserting the end of the inner wall side of the vertical hole of the wall-buried reinforcing bar 20 into the first insertion hole 114 of the coupler 110 provided in the fixture, the wall-buried reinforcing bar and the fixture Combine (Fig. 3b). In combining the wall buried reinforcing bar and the fixture, it is preferable that the second connection part 112 of the coupler 110 does not protrude from the inner wall line 11 of the vertical wall.

Fixing the wall-buried reinforcing bar to the horizontal or vertical reinforcing bar of the vertical wall, and inserting the end of the inner wall side of the vertical hole of the wall-buried reinforcing bar into the first insertion hole of the coupler provided in the fixture to couple the wall-buried reinforcing bar and the fixture. Steps can also be constructed by changing the order of each other. That is, after combining the wall-buried reinforcing bar and the fixture first, the wall-buried reinforcing bar may be fixed to the horizontal or vertical reinforcing bar of the vertical wall. Here, it is expressed as a wall buried reinforcement, but one side is inserted into the first insertion hole of the fixture, and the other side is sufficient if it is fixed to the horizontal or vertical reinforcement of the vertical wall, so it includes a rod-shaped one, for example, a stud. Should be interpreted as doing.

On the front surface of the plate 120, a demolding foam 180 and a cover plate 185 closing the front surface of the demoulding foam 180 are coupled (FIG. 3C). The demolding foam 180 is shown in FIG. 4. The demolding foam 180 includes a horizontal plate 181 provided with a coupler insertion hole 183 into which the second connection part 112 of the coupler is inserted, and a strip fixed to an end of the horizontal plate 181 and having a constant width. It is formed of a plate 182. The demolding foam 180 may be formed by fixing the horizontal plate 181 and the strip plate 182 to be perpendicular to each other, as shown in FIG. 4A, but after the concrete is placed on the vertical wall, the demoulding foam from the vertical wall ( In consideration of the need to separate 180), it is preferable to fix any one of the four strip plates 182 inclined with respect to the horizontal plate 181, as shown in FIG. 4B. In FIG. 4B, the strip plate 182 on the upper side of the horizontal plate 181 is shown to be obliquely formed, but it is of course possible to obliquely form the left and right sides or the lower side or a plurality of the horizontal plates. In addition, when the handle 123 is provided on the plate 120 of the fixture 100, a long hole 186 is formed so that the handle 123 of the plate 120 can be inserted into the horizontal plate 181 of the demolded foam. Can be.

In place of the demolding foam 180 and the cover plate 185, a hexahedral finishing hole 190 having a certain volume may be used. Figure 5 shows an embodiment of the closure 190. A coupler insertion groove 193 into which the second connection portion 112 of the coupler is inserted and a long groove 196 into which the handle 123 of the plate 120 is inserted are provided on the rear surface of the closing tool. Although the finishing sphere 190 may be formed in a rectangular parallelepiped shape (Fig. 5a), in order to be able to easily separate from the vertical wall after concrete placement of the vertical wall, the outer circumferential surface may be formed as an inclined surface so that the cross-sectional area increases toward the front. (Fig. 5b).

The demolding foam 180 or the finishing hole 190 prevents the concrete from flowing into the second insertion hole 115 of the coupler, and forms a step in the direction of the outer wall of the vertical sphere on the inner wall of the vertical sphere. Since the step is formed on the vertical wall at the location where the concrete bracket is formed, the contact area between the concrete bracket 200 and the vertical wall 10 to be constructed later increases, so that the bonding force between the concrete bracket 200 and the vertical wall 10 is increased. Improves. In addition, the vertical wall side end of the concrete bracket 200 is located inside the wall, so that the vertical load transmitted from the slab is transmitted to the vertical wall through the slab, thereby improving the supporting force of the bracket.

Next, concrete is poured to form a vertical wall while raising the slip foam. In this process, the back side of the plate is all buried in the vertical wall.

After the vertical wall is cured, in the lower workbench of the slip foam, the demolding foam 180 or the finishing tool 190 covering the front of the fixture is disassembled from the wall, and the coupler 110 and the plate 120 are fitted. In this case, the plate 120 can also be disassembled and separated from the coupler 110, and the embedded reinforcing bar 15 for the bracket is inserted into the second insertion hole of the coupler to fix the fixture and the embedded reinforcing bar for the bracket (Fig. 3d). The disassembled demoulding foam 180, the finishing hole 190, or the plate 120 can be reused in subsequent operations.

Thereafter, the buried reinforcing bars 150 for brackets are reinforced vertically and horizontally using the reinforcing bars 151 for brackets (Fig. 3e).

Next, after fixing the bracket formwork form 170 around the buried reinforcing bar for the bracket, concrete is poured, and after the concrete is cured, the bracket formwork form 170 is dismantled to complete the concrete bracket 200 (Fig. 3f). . When fixing the bracket formwork form 170 around the buried reinforcing bar for a bracket, the position is measured and displayed by any one of laser, infrared, and radio waves, so that the concrete bracket can be formed at a more accurate position.

When fixing the bracket formwork 170, an insertion hole 210 through which the end of a bolt or reinforcement is inserted and fixed may be formed together on the upper part of the bracket. After the concrete bracket 200 is completed, the PC slab 220 is placed on the top of the bracket, and the end of the bolt 211 or the reinforcing bar 212 inserted through the PC slab 220 is the concrete bracket 200 By being inserted and fixed to the insertion hole 210 of the, the PC slab 220 and the concrete bracket 200 can be fixed more firmly. In the case of fixing the PC slab and the bracket 200 with bolts, a nut body having a female thread formed inside the insertion hole 210 may be inserted so that the bolt and the insertion hole may be screwed (FIG. 8A). In the case of fixing the PC slab and the bracket 200 with reinforcing bars, after inserting the reinforcing bars, the main surface of the reinforcing bars may be filled and fixed with mortar (FIG. 8B).

6 shows another embodiment of constructing a concrete bracket by using the fixture according to the present invention.

The embodiment shown in FIG. 6 is the same as the embodiment shown in FIG. 3 in that it includes the step of combining the wall-buried reinforcing bar and the fixture and the step of fixing the wall-buried reinforcing bar to the horizontal or vertical reinforcing bar of the vertical wall. , There is a difference in that instead of using the buried reinforcing bar 150 for the bracket and the reinforcing bar 151 for the bracket, the buried hardware 160 for the bracket is used.

The embedded hardware 160 for a bracket is composed of a vertical portion 161, a horizontal portion 162 and a reinforcing portion 163 to correspond to the bracket shape, as shown in FIG. 7, and the vertical portion 161 It is configured by fixing the connection reinforcing bar 164 inserted into the second insertion hole 115 of the coupler in a direction opposite to the direction in which the horizontal part and the reinforcing part are located. When using the buried hardware 160 for a bracket, only inserting the connecting reinforcing bar 164 of the buried hardware 160 for a bracket into the second insertion hole 115 of the coupler completes the internal reinforcement work of the bracket, so the work is completed. It has the effect of making it much easier.

In addition, a plurality of pouring holes 165 may be formed in the vertical portion 161, the horizontal portion 162, or the reinforcing portion 163 of the buried hardware 160 for a bracket. The pouring hole 165 has the effect of forming a more robust bracket by allowing the concrete to be continuous around a vertical portion, a horizontal portion, or a reinforcing portion when pouring concrete for bracket formation.

6D shows a state in which the connecting reinforcing bar 164 of the buried hardware 160 for the bracket is inserted into the second insertion hole 115 of the coupler, and thereafter, as shown in FIG. 6E, the bracket formwork form 170 ) Is fixed around the buried hardware 160 for brackets, and then concrete is poured, and after the concrete is cured, the bracket formwork form 170 is dismantled to complete the concrete bracket 200. As described above, when fixing the bracket formwork form 170, the insertion hole 210 through which the end of the bolt or the reinforcing bar is inserted and fixed can be formed together on the upper part of the bracket.

As described above, the preferred embodiment of the present invention has been described above with reference to the drawings, but the present invention is not limited to the above-described embodiment. In particular, the bracket fixture according to the present invention is not only a concrete bracket formed on a vertical wall of a vertical ball, but also free It can be used when forming a bracket on a structural element made of cast or cast-in-place concrete. As such, a person of ordinary skill in the art to which the present invention pertains can be modified within the scope of the present invention, and such modifications will also fall within the scope of the present invention.

The present invention is used in the field of forming a bracket for supporting the slab forming the floor of each floor of the vertical sphere in the construction of a vertical sphere accompanying a large-depth tunnel using an underground space in an urban area or a common sphere that accommodates public facilities. .

10: vertical wall 20: wall buried reinforcement
100: fixture 110: coupler
120: plate 150: embedded reinforcement for bracket
160: embedded hardware for bracket 170: bracket formwork
180: demolding foam 190: finish
200: concrete bracket 220: PC slab

Claims (13)

A plurality of couplers having a first insertion hole into which the horizontal reinforcing bar of the vertical wall or the wall buried reinforcing bar fixed to the vertical reinforcing bar is inserted, and a second insertion hole into which the buried reinforcing bar for brackets is inserted on the other side;
Consists of; a plate formed of several through holes 121 having a diameter corresponding to the outer diameter of the coupler so that the coupler can be coupled,
The center of the first insertion hole of the coupler, the through hole of the plate, and the second insertion hole of the coupler are positioned in a straight line, and the coupler is fitted and fixed in the through hole of the plate in a direction orthogonal to the plate,
The coupler is a one-touch coupler, characterized in that it is a one-touch coupler for fixing the buried wall reinforcing bar inserted into the first insertion hole and the buried reinforcing bar inserted into the second insertion hole by the action of a spring and a wedge provided therein. Bracket fixture to form The method according to claim 1,
Bracket fixture for forming a concrete bracket, characterized in that a concave portion is formed in the middle of the first insertion hole and the second insertion hole of the coupler to reduce the outer cross section of the coupler The method according to claim 1,
The plate is a bracket fixture for forming a concrete bracket, characterized in that curved parallel to the inner wall of the wall on which the bracket is installed The method according to claim 1,
The plate is a bracket fixture for forming a concrete bracket, characterized in that the handle is further provided on the front side A concrete bracket formed including any one of claims 1 to 4. (1) A step of fixing the wall buried reinforcement to the horizontal or vertical reinforcement of the vertical wall;
(2) Using the fixture of any one of claims 1 to 4, inserting the inner wall side end of the vertical hole of the wall-buried reinforcing bar into the first insertion hole of the coupler provided in the fixture, and combining the wall-buried reinforcing bar and the fixture. Step B;
(3) In order to prevent concrete from entering the coupler and to form a step on the inner wall of the vertical sphere in the direction of the outer wall of the vertical sphere, the demolding foam and the cover plate are combined on the front of the plate of the fixture, or a hexahedral finish is combined. Step C;
(4) D step of pouring concrete for forming a vertical wall while raising the slip foam, and dismantling the demolded foam and the cover plate or the finishing plate combined in the step C;
(5) E step of inserting the buried reinforcing bar for the bracket into the second insertion hole of the coupler, and further reinforcing the buried reinforcing bar for the bracket with a reinforcing bar for the bracket;
(6) Step F of completing the concrete bracket by pouring concrete after fixing the bracket formwork around the embedded reinforcement for the bracket; characterized in that it comprises a, concrete bracket construction method for supporting the slab of the vertical sphere. The method of claim 6,
In place of the step E, the connection is composed of a horizontal portion, a vertical portion, and a reinforcing portion corresponding to the shape of the bracket, and the vertical portion is inserted into the second insertion hole of the coupler in a direction opposite to the direction in which the horizontal portion and the reinforcing portion are located. A method of constructing a concrete bracket for supporting a slab of a vertical sphere, comprising: an E'step of coupling a buried hardware for a bracket configured by fixing a reinforcing bar to the fixture. The method of claim 7,
A concrete bracket construction method for supporting a slab of a vertical sphere, characterized in that a pouring hole is formed in the horizontal, vertical or reinforcing part of the buried hardware. The method of claim 6,
In the step F, the concrete bracket construction method for supporting the slab of the vertical sphere, characterized in that the end of the bolt or reinforcing bar is inserted and fixed to form an insertion hole on the upper part of the bracket. (1) Using the fixture of any one of claims 1 to 4, inserting the inner wall side end of the vertical hole of the wall-buried reinforcing bar into the first insertion hole of the coupler provided in the fixture, and combining the wall-buried reinforcing bar and the fixture. step a;
(2) b step of fixing the wall buried reinforcement to the horizontal or vertical reinforcement of the vertical wall;
(3) In order to prevent concrete from entering the coupler and to form a step on the inner wall of the vertical sphere in the direction of the outer wall of the vertical sphere, the demolding foam and the cover plate are combined on the front of the plate of the fixture, or a hexahedral finish hole is combined. step c;
(4) step d of placing concrete for forming a vertical wall while raising the slip foam, and dismantling the demolded foam and the cover plate or the finishing plate combined in step c;
(5) e step of inserting the buried reinforcing bar for the bracket into the second insertion hole of the coupler, and further reinforcing the buried reinforcing bar for the bracket with a reinforcing bar for the bracket;
(6) Step f of completing the concrete bracket by pouring concrete after fixing the bracket formwork around the embedded reinforcing bars for the bracket; characterized in that it comprises a, concrete bracket construction method for supporting the slab of the vertical sphere. The method of claim 10,
In place of the step e, the connection is composed of a horizontal part, a vertical part, and a reinforcing part corresponding to the shape of the bracket, and the vertical part is inserted into the second insertion hole of the coupler in a direction opposite to the direction in which the horizontal part and the reinforcing part are located. A concrete bracket construction method for supporting a vertical slab, characterized in that it comprises a step e'of coupling a buried hardware for a bracket configured by fixing a reinforcing bar to the fixture. The method of claim 11,
A concrete bracket construction method for supporting a slab of a vertical sphere, characterized in that a pouring hole is formed in a horizontal portion, a vertical portion, or a reinforcing portion of the buried hardware for the bracket. The method of claim 10,
In the step f, the concrete bracket construction method for supporting the slab of the vertical sphere, characterized in that the end of the bolt or reinforcing bar is inserted and fixed to form an insertion hole on the top of the bracket.

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