KR100863974B1 - Pre-fabrication method of rebar for reinforced concrete column - Google Patents

Abstract

A pre-assembling method of a fabric reinforcement for a reinforced concrete column is provided to pre-assemble a fabric reinforcement simply by framing a fabric reinforcement used for a reinforced concrete column, and to stand by itself without installing an additional support member by increasing the stiffness of a fabric reinforcement. A pre-assembling method of a fabric reinforcement for a reinforced concrete column comprises the steps of: arranging plural jigs for assembling reinforcing bars at appointed intervals along the longitudinal direction of a reinforcing bar; manufacturing a fabric reinforcement by coupling a reinforcing bar to the jig for assembling a reinforcing bar; and pulling up the fabric reinforcement, and then coupling with the pre-installed bottom concrete. Wherein the jig for assembling a reinforcing bar includes a pair of steel pipes arranged at a certain distance and supporting a reinforcing bar by standing by itself while pre-assembling the fabric reinforcement, and a frame coupled to a pair of the steel pipes to support a reinforcing bar and to increase the stiffness of the fabric reinforcement.

Description

Pre-fabrication method of rebar for reinforced concrete column

The present invention relates to a method of pre-assembling the reinforcing bar for reinforced concrete pillars, and more specifically to the reinforcement for reinforced concrete pillars that can be easily pre-assembled reinforcing steel for reinforced concrete pillars by reinforcing the reinforcement using a reinforcing steel jig A method of pre-assembling a network.

Column refers to a vertical structural element that transfers the load applied from the top to the bottom through axial compression. Particularly in reinforced concrete buildings, the column receives the load from the upper slab or beam. Since it plays a role as the basis of the transfer, it is a very important part to determine the safety of the completed structure.

These pillars are completed by placing reinforcement bars manually and placing concrete in places where they should be installed.In this case, there is a problem that the air is delayed because reinforcement work depends only on manpower. After installing the temporary workbench, the worker climbs on the workbench to perform a demanding reinforcement for a long time, so there is a problem that safety accidents do not end.

In view of these problems, the recent column, assembling the rebar network by combining the reinforcing bar in the construction site, lifting the completed reinforcing bar network with a crane and then transported to the place where the column will be installed, and the reinforcing bar used in advance After joining the assembled reinforcing bar network, it is generally constructed by the reinforcing bar network prefabrication method of placing and curing concrete.

However, the rebar network prefabrication method, there is a problem that the degree of independence of the completed reinforcing bar when the length of the reinforcing bar used in the reinforcing bar is increased by lifting the crane upright. In other words, even when the reinforcing bar is upright and fixed to the foundation, in order to prevent the reinforcing bar from falling down, a separate supporting member should be installed to maintain the upright of the reinforcing bar. There is a problem of air delay and cost increase.

In addition, in the conventional rebar mesh prefabrication method, since each step constituting the rebar network is not systemized, it takes a lot of time to produce the rebar network without skilled workers, and does not guarantee the quality of the completed column itself. have.

An object of the present invention, by reconstructing the reinforcing steel bar used in the reinforced concrete column can be easily pre-assembled reinforcing steel bar, increase the rigidity of the finished reinforcing steel network can be freely reinforcement without installing additional supporting members It is to provide a pre-assembly method of the rebar network.

The above object, according to the present invention, the step of disposing a plurality of reinforcing jig for assembling at a predetermined interval along the longitudinal direction of the rebar; Manufacturing a reinforcing bar network by coupling reinforcing bars to the reinforcing bar jig; And pulling up the reinforcing bar network and coupling the floor concrete to the pre-installed floor concrete, wherein the plurality of reinforcing bar jig are arranged to be spaced apart from each other and stand up during the pre-assembly operation of the reinforcing bar network to support the reinforcing bar. Steel pipe; And is coupled to the pair of steel pipe to support the reinforcement and is achieved by a pre-assembly method of the reinforcing steel bar for reinforced concrete pillars, characterized in that it comprises a frame for reinforcing the rigidity of the reinforcing steel bar.

At least one end of both ends of the steel pipe is formed with a steel pipe seating groove to be seated reinforcing bar, the frame may be formed in the frame along the outer region of the frame a plurality of seating grooves are seated.

In the steel pipe, a pinhole is formed to penetrate in a direction intersecting with the direction of formation of the steel pipe seating groove at a position adjacent to the steel pipe seating groove, and a pin is inserted into the pinhole to fix the rebar seated in the steel pipe seating groove. Can be.

The frame may be a rectangular frame in which four frame members are connected to each other.

The frame seating grooves formed in the frame member forming the left and right sides of the frame, among the plurality of frame seating grooves, may have an elliptical shape in which one side portion is opened and inclined downward.

The steel pipe has a 'c' shaped cross section, and the fixing pin may be a tapered pin.

The pre-assembly method of the reinforcing bar for reinforced concrete pillars, before the step of placing the reinforcing bar jig, arranging the number of reinforcing bars required for the reinforcing bar fabrication on the reinforcing bar mounting bar installed adjacent to the reinforcing bar jig It may further comprise a step.

Arranging the reinforcing bar in the reinforcing bar mounting step, disposing the at least one spacer member along the longitudinal direction of the reinforcing bar on the lower side of the reinforcing bar mounting; Disposing reinforcing bars on the upper surface of the spacer; And it may include the step of placing the reinforcing bar on the upper side of the rebar assembly holder.

The step of coupling the reinforcing bar to the reinforcing jig for assembly, seating the reinforcing steel in the steel pipe seating groove, and fastening the fixing pin to the pin hole to secure the reinforcing steel; And mounting a reinforcing bar in the frame seating groove.

Coupling the reinforcing bar to the reinforcing jig for assembly, the at least one auxiliary jig disposed between the reinforcing jig for assembly spaced apart from each other, may further comprise the step of coupling the reinforcing bar to the auxiliary jig.

The auxiliary jig, a pair of steel pipes spaced apart from each other and upright during the pre-assembly operation of the reinforcing bar network to support the rebar; And at least one connection bar connecting the pair of steel pipes to each other, and at least one end of both ends of the pair of steel pipes may have an auxiliary seating groove in which rebar is seated.

The step of coupling the reinforcing bar to the reinforcing jig for assembly, may further comprise the step of coupling the reinforcing reinforcement to the prefabricated reinforcing bar network consisting of the reinforcing bars inserted into the steel pipe seating groove and the frame seating groove.

Coupling the reinforcing bar, Coupling a hoop along the circumference of the prefabricated rebar network; And it may include a step of coupling between the reinforcing bars inserted into the frame seating groove with a tie.

Lifting the reinforcing bar network and coupling the bottom concrete may include: lifting the reinforcing bar network and moving the reinforcing bar to an upper part of the fixing bar protruding from the upper surface of the bottom concrete; And coupling the moved rebar network with the anchored rebar.

The step of coupling the reinforcing bar and the fixing reinforcing bar, the lower end of the reinforcing bar and the upper end of the fixing bar may be screwed by a coupler.

The coupler, the thread is formed on the inner circumferential surface, the coupler body having a hollow shape so that the reinforcement is inserted; And a guide portion extending from at least one of both ends of the coupler body, the guide portion having a tapered surface that decreases in diameter toward the coupler body side.

The reinforcing bar network and the anchoring bar may be half-joint.

According to the present invention, by using the reinforcing jig for reinforcing jig for reinforcing the reinforcing steel bar can be easily pre-assembled, it is possible to provide a reinforcing steel bar for reinforced concrete pillars that can be self-supporting without installing an additional support member.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, descriptions of already known functions or configurations will be omitted to clarify the gist of the present invention.

In addition, in the present invention, the pre-assembly of the reinforcing bar is not to assemble the reinforcing bar constituting the reinforcement concrete column by combining the respective reinforcing bar on the upper side of the floor concrete, the floor after completing the production of the reinforcing bar constituting the column It means to combine with concrete, which is the same below.

1 is a perspective view showing a state of the assembled reinforcing reinforcing bar network by the pre-assembly method of the reinforcing steel bar for reinforced concrete pillars according to an embodiment of the present invention, Figure 2 is a perspective view of the jig for assembling the reinforcing bar of Figure 1, 3 is a perspective view of the auxiliary jig of FIG. 1.

Referring to Figure 1, the assembled reinforcing bar network completed by the pre-assembly method of the reinforcing bar for the reinforced concrete column (1), a plurality of reinforcing bars 10 coupled to the reinforcing jig 100 and the auxiliary jig 200 It includes.

Referring to FIG. 2, the jig 100 for assembling the reinforcing bar is erected during the pre-assembly operation of the reinforcing bar network, and has a pair of steel pipes 110 supporting the reinforcing bars, and a frame 120 coupled to the pair of steel pipes to support the steel bars. ).

Steel pipe 110 is a member responsible for the overall area of the completed reinforcing bar network, the steel pipe seating grooves (111a, 111b) formed on both ends and the steel pipe 110 in a position adjacent to the seating grooves (111a, 111b). It includes a pinhole 112 formed through.

In this embodiment, as shown in FIG. 2, a hollow rectangular steel pipe 110 is used, but a circular steel pipe (not shown) or one side is opened to use a steel pipe (not shown) having a 'c' shaped cross section. It is okay.

In addition, the steel pipe 110 has a hollow shape to allow the concrete to be poured in the future when the concrete is poured into the steel pipe 110 inside. Concrete flowing into the steel pipe 110 is cured integrally with the steel pipe 110 according to the curing process of the column.

The steel pipe seating groove 111a provided at the upper end of the steel pipe 110 is a portion on which steel reinforcing bars constituting the reinforcing bar is seated, and is recessed from the upper end of the steel pipe 110 to have a 'U'-shaped cross section.

The steel pipe seating groove 111b provided at the lower end of the steel pipe 110 is a portion in which the reinforcing bars constituting the reinforcing bar is seated, and is recessed from the lower end of the steel pipe 110 to have a 'U'-shaped cross section.

The pinhole 112 formed adjacent to the steel pipe seating grooves 111a and 111b serves as an insertion passage of the fixing pin 130 (refer to FIG. 7), and the steel pipe seating groove is located at a position adjacent to the steel pipe seating grooves 111a and 111b. It is formed through the steel pipe 110 in a direction intersecting with the forming direction of (111a, 111b). Reinforcing bar seated in the steel pipe seating grooves (111a, 111b) is firmly fixed to the steel pipe 110 in accordance with the insertion of the fixing pin 130 is prevented its movement.

Referring to FIG. 2, the frame 120 is a member in charge of supporting the local area of the completed rebar network together with the steel pipe 110, and the first reinforcement part 121 coupled to the upper end of the steel pipe 110 and the steel pipe ( The second back muscle part 122 coupled to the lower end of the 110, the third back muscle part 123 interconnecting the left ends of the first back muscle part 121 and the second back muscle part 122, and the first back muscle And a fourth back muscle part 124 interconnecting the right ends of the part 121 and the second back muscle part 122.

As such, the frame 120 is formed by interconnecting a total of four frame members, and is provided in a quadrangular shape. However, the scope of the present invention is not limited by the shape of the frame 120.

In addition, the frame 120 includes a plurality of frame seating grooves 121a, 122a, 123a, and 124a along the outer region of the frame 120, and first seats the frame seating grooves formed in the first back muscles 121. As the groove 121a, the frame seating groove formed in the second back muscle part 122 as the second seating groove 122a, and the frame seating groove formed in the third back muscle part 123 as the third seating groove 123a, The frame seating groove formed in the fourth back muscle part 124 is divided into a fourth seating recess 124a.

The first back muscles 121 are integrally coupled to the upper end of the steel pipe 110 through welding or the like, and the first seating groove 121a is formed at the top of the first back muscles 121. The first seating groove 121a is a portion in which the reinforcing bars constituting the reinforcing bar of the steel pipe 110 is recessed, and is recessed from the upper end of the first reinforcement part 121 in proportion to the size of the reinforcing bar to be assembled. Is formed. In addition, both ends of the first back muscles 121 are configured to protrude from the third back muscles 123 and the fourth back muscles 124, respectively, so that the first seating grooves formed at both ends of the first back muscles 121 ( Completion of the reinforcing bar network is made by matching the formation positions of the 121a) with the formation positions of the third seating grooves 123a of the third back muscles 123 and the fourth seating grooves 124a of the fourth back muscles 124, respectively. Make sure the center of gravity of the bars provided at each stage coincide with each other.

Referring to FIG. 2, the second reinforcement part 122 is integrally coupled to the lower end of the steel pipe 110 by welding or the like, and includes a second seating groove 122a formed at the lower end. The second seating groove 122a is a part in which the rebar is seated, and other details are the same as the first seating groove 121a described above. According to the present embodiment, when the second seating groove 122a is recessed from the lower end of the second back muscle 122, the frame 120 may have a symmetrical shape up, down, left, and right to structurally improve safety. However, the second seating groove 122a may be recessed from an upper end of the second back muscle 122 (not shown), and the scope of the present invention is not limited by the position of the second seating groove 122a. Do not.

Referring to FIG. 2, the third back muscle part 123 is integrally coupled to the left ends of the first back muscle part 121 and the second back muscle part 122 by welding or the like, and the third back muscle part 123 is provided. It includes a third mounting groove (123a) formed on the left end of the). The third seating groove 123a is a portion in which the rebar is seated, and is formed in an elliptical shape in which one side portion is opened and inclined downward, and is slightly larger than the diameter of the reinforcing bar being inserted. Therefore, the rebar may not only be easily seated in the third seating groove 123a, but may be prevented from leaving after being seated, and a certain portion of movement may be allowed in the third seating recess 123a.

Referring to FIG. 2, the fourth back muscle portion 124 is integrally coupled to the right end portions of the first back muscle portion 121 and the second back muscle portion 122 by welding or the like, and the fourth back muscle portion 124. It includes a fourth seating groove (124a) formed on the right end of the). Since the matters relating to the fourth seating grooves 124a are the same as those for the third seating grooves 123a, detailed description thereof will be omitted.

Referring to FIG. 3, the auxiliary jig 200 is a member additionally provided to reinforce the structural force of the completed rebar network, and includes a pair of steel pipes in which auxiliary seating grooves 211a and 211b and auxiliary pinholes 212 are formed. 210 and at least one connection bar 220 connecting the steel pipe 110 to each other.

The details of the auxiliary seating grooves 211a and 211b and the auxiliary pinholes 212 are the same as those of the steel pipe seating grooves 111a and 111b and the pinholes 112 of the rebar assembly jig 100, respectively, and thus, detailed descriptions thereof are omitted. do.

Connection bar 220 is a member for connecting a pair of steel pipes 210, one end of the weld (W) is fixed to the side of one side of the steel pipe 210, the other end is welded to the side of the other steel pipe (210) W) It is fixed.

After the plurality of reinforcing bars are seated by the plurality of reinforcing jig 100, the auxiliary jig 200 is inserted between the plurality of reinforcing steel jig 100 and coupled with the reinforcing bars to form the overall structure of the reinforcing bar network. Strength can be strengthened.

The auxiliary jig 200 may be produced at a lower price than the jig 100 for reinforcing bars, and may be omitted depending on the total length of the reinforcing bar network to be assembled.

Reinforcing bar jig is completed by the reinforcing jig 100 and the auxiliary jig 200 is increased by the stiffening frame, accordingly the pre-assembly method of the reinforcing bar for the reinforced concrete column according to the present embodiment without additional support member In addition to providing a self-supporting rebar network, it not only reduces costs and shortens the air, but also pre-assembles high-quality rebar networks with uniform reinforcement spacing and constant rebar cover thickness. .

Figure 4 is a flow chart of a pre-assembly method of the reinforcing steel bar for reinforced concrete pillars according to an embodiment of the present invention, Figure 5 is a detailed flow chart of Figure 4, Figure 6 is a reinforcing bar of the reinforcing bar disposed on the rebar assembly and spacing members Figure 7 is a perspective view showing a state, Figure 7 is a flow chart showing a sequence of coupling the reinforcing bars to the reinforcing jig for assembly, Figure 8 is a perspective view showing a state of manufacturing a prefabricated rebar network.

Hereinafter, the upper root 11 refers to reinforcing steel that is seated in the steel pipe seating groove 111a and the first seating groove 121a of the frame 120 formed at the upper end of the steel pipe 110, and the lower root 12 is a steel pipe. (110) refers to the reinforcing bar seated in the steel pipe seating groove (111b) formed in the lower end and the second seating groove (122a) of the frame 120, side flank 13 is the third seating groove (123a) of the frame (120) And it means the rebar is seated in the fourth seating groove (124a). It is noted that the upper and lower muscles 11, 12, and the side muscles 13 are all identical to each other for convenience of description with the same rebar.

Referring to FIG. 4, the pre-assembly method of the reinforcing steel mesh for reinforced concrete columns according to the present embodiment includes a pre-assembly preparation step (S1), a pre-assembly column step (S2), and a pillar installation step (S3).

Pre-assembly preparation step (S1) is a step for preparing the pillar pre-assembly step (S2) by placing and aligning the reinforcing bar used in the column pre-assembly step (S2) to an appropriate position, referring to Figure 5, Arranging the cradle (S10), arranging the spacer member (S11), arranging the rebar on the upper surface of the spacer member (S12), and arranging the rebar on the upper side of the rebar assembly holder ( S13).

Referring to Figure 5, the step of placing the rebar assembly cradle (S10), the step of placing a plurality of rebar assembly cradle 300 along the longitudinal direction of the reinforcing bars constituting the column, the reinforcing bar used in this step The number of mounting brackets 300 depends on the total length of the reinforcing bars constituting the column.

Referring to Figure 6, the reinforcing bar for assembling 300 is a member provided to easily couple the reinforcing bars to the reinforcing steel jig 100 when prefabricating the reinforcing bar for the reinforced concrete pillars, pedestal 311, reinforcing bars The support 312 and the fixed block 313 is included. A plurality of pedestals 311 are provided in pairs along the longitudinal direction of the reinforcing bars, and are responsible for supporting the entire area of the reinforcing bar for assembling 300. Reinforcing bar support 312 is a part for temporarily seating the reinforcing bar used as the upper bar (11), is coupled to the upper end of the pedestal (311). The fixed block 313 is provided in close contact with both sides of the reinforcing bar support 312 in order to prevent separation of the reinforcing bar support 312.

Referring to Figure 5, the step of placing the spacer member (S11) is a step of arranging the plurality of the spacer member 400 spaced apart from each other along the longitudinal direction of the reinforcing bar, of the spacer member 400 used in this step The number depends on the total length of the reinforcing bars that make up the column.

Referring to Figure 6, the spacing member 400 is a member that is provided to easily lift the reinforcing bar from the ground, using a wood or the like can be easily obtained in the field. When the step (S11) for placing the spacer is omitted, since the rebar is directly placed on the ground, foreign matters such as soil are not only buried, and when the rebar is coupled to the rebar assembly jig 100 to lift the rebar from the ground. Therefore, there is a problem that the work speed is slow. Therefore, the spacer 400 is provided on the lower side of the rebar assembly holder 300 to solve this problem.

Referring to Figure 5, the step of placing the reinforcing bar on the upper surface of the spacer member (S12), the step of arranging the appropriate number of the reinforcing bars 10 along the upper surface of the plurality of pre-arranged spacer member 400, The number of rebars 10 depends on the size of the rebar network to be preassembled.

Referring to Figure 5, the step of placing the reinforcing bar on the upper side of the rebar assembly holder (S13), the step of placing the upper bar 11 on the upper side of the rebar assembly holder 300, The number depends on the size of the rebar network to be preassembled.

Since the rebar support 312 of the rebar assembly holder 300 can be separated from the pedestal 311, the rebar 10 is first disposed on the upper surface of the spacer member 400 in the absence of the rebar support 312, Next, the reinforcing bar support 312 is coupled to the upper side of the pedestal 311 to interconnect a pair of reinforcing bars 300 for assembling, and finally, by placing the upper bar 11 on the upper surface of the reinforcing bar support 312. Pre-assembly preparation step (S1) is completed.

As such, the reinforcing bar support 312 can be arbitrarily separated from or combined with the pedestal 311 to facilitate the arrangement of the reinforcing bars.

Reinforcing bar disposed on the upper surface of the spacing member 400 is used later as the lower bar 12 and side muscles 13, the rebar disposed on the upper surface of the reinforcing bar support 312 is used as the upper bar 11 later.

As described above, the method of prefabricating the reinforcing bar for reinforced concrete pillars according to the present embodiment, by preparing the reinforcing bar to be used for reinforcing steel bar prefabricated using the reinforcing bar 300 for assembling, the construction of the reinforced concrete column By shortening the time, the overall air can be shortened.

Referring to FIG. 4, the pillar pre-assembling step (S2) is a step of pre-assembling the reinforcing bar for reinforcement concrete columns, arranging the reinforcing jig 100 (S20), and the reinforcing jig 100. Comprising a step (S21) for completing the reinforcing bar network by combining the rebar.

Referring to Figure 5, the step of arranging the reinforcing jig 100 for the step (S20), considering the size of the reinforcing bar network to be assembled to the reinforcing bar jig 100 for the reinforcing bar assembly 300 Positioning step. After arranging one reinforcing jig 100 and combining reinforcing bars, the following reinforcing jig 100 may be sequentially joined to reinforcing bars, but considering the shortening of air, within the range of manpower allowed. After placing the plurality of reinforcing jig assembly 100 at a time to assemble the rebar network.

5 and 7, the step (S21) of completing the reinforcing bar network by combining reinforcing bars with the reinforcing jig 100 for fixing the upper bar 11 (S211) and the lower bar 12 ) (S212), the step of tightening the side muscles (S213), the step of combining the hoop muscles (S214), the step of combining the tie roots (S215), the side And fixing the vicinity 13 (S216).

Hereinafter, the temporarily assembled reinforcing bar network refers to the reinforcing bar network assembled by the upper bar 11, the lower bar 12 and the side bar 13, the reinforcing bar, the assembly bar (1) is the hoop bar 15 and tie Reinforcement is carried out to the root (16) to represent the completed rebar network.

7 and 8, in the fixing of the upper bar 11 (S211), two of the plurality of upper bar 11 disposed on the upper surface of the reinforcing bar support 312 may be attached to the upper end of the steel pipe 110. Seated in the formed steel pipe seating groove (111a), respectively, the fixing pin 130 is inserted into the pinhole 112 to fix the seated upper root (11), the first seating groove (1) And mounting the remaining upper roots 11 to 121a) and fixing the seated upper roots 11 to a fastening line (not shown).

Referring to FIGS. 7 and 8, the fixing of the lower bar 12 (S212) may include two of the rebars disposed on the upper surface of the spacer 400 (among the rebars disposed on the upper surface of the spacer 400). Some are used as the lower roots 12 and the remaining ones as the side roots 13) are respectively seated in the steel pipe seating grooves 111b formed at the lower end of the steel pipe 110, and the fixing pin 130 in the pinhole 112. Inserting a) to fix the lower muscles 12, and seating the remaining lower muscles 12 in the second seating grooves 122a of the second abdominal muscles 122 and fixing them with fastening lines (not shown). do.

Referring to FIGS. 7 and 8, in step S213, the side roots 13 are lifted up, the third seating grooves 123a and the side roots 13 disposed on the upper surface of the spacer 400. And mounting the fourth seating groove 124a.

In this case, the side root 13 is located below the third seating groove 123a and the fourth seating groove 124a, thereby completing the fabrication of the temporary assembled rebar network.

Referring to FIG. 7, in the step of combining the hoop muscles (S214), the hoop muscles 15 are arranged along the circumference of the temporary reinforcing bar network, and the upper and lower muscles 11 and 12 and the hoop muscles 15 are disposed. Binding to a fastening line (not shown).

Similarly, the step (S215) of joining the tie roots is to partially reinforce the tie roots 16 around the reinforcing bar network, and connect the upper and lower muscles 11 and the lower muscles 12 and the tie roots 16 to the fastening line (not shown). ), And the step of fixing the side muscles (S216) includes the side muscles 13 and the hoop muscles 15, and the side muscles 13 and the tie muscles 16 as fastening lines (not shown). Binding step.

9 is a schematic front view of the assembled rebar network of FIG. 1.

1 and 9, as described above, the assembled reinforcing bar 1 is configured in addition to the upper bar 11, the lower bar 12, and the side bar 13 constituting the temporary rebar bar 15. ) And the reinforcement net is completed by the reinforcement to the tie root (16).

'자형으로 결합되는 철근을 의미하며, 타이근(16)은 가조립 철근망 둘레의 일부분에 '

'자형으로 결합되는 철근을 의미한다.Although there is a surface that is difficult to show in the drawing, the hoop root 15 is formed along the circumference of the prefabricated rebar network.

'Reinforcing bar is coupled to the shape, the tie bar (16) is a part of the perimeter of the prefabricated rebar network'

'Reinforcing bars that are joined in a shape.

'자형으로 제작된 후프근(15)은 가조립 철근망의 둘레를 따라 복수 개가 결합된다.Referring to FIG. 9,

'Hoop muscles 15 made of a shape is coupled to the plurality along the circumference of the temporarily assembled rebar network.

As described above, the third seating groove 123a and the fourth seating groove 124a are formed to be slightly larger than the diameter of the side root 13 in an elliptical shape, and the third seating groove 123a and the fourth seating groove ( The side muscles 13 seated at 124a may move within a certain range.

'자형의 후프근(15)을 해체하고 이를 다시 감는 과정을 밟아야 한다.When the side muscles 13 are fixed, the temporary reinforcing bar network cannot change the positions of the top muscles 11, the bottom muscles 12, and the side muscles 13,

'The shape of the hoop root (15) must be dismantled and rewinding it.

On the contrary, the pre-assembly method of the reinforcing bar for reinforcement concrete pillars according to the present embodiment, so that the side root 13 can be moved within a certain range to facilitate the reinforcement of the hoop muscle 15.

Referring to FIG. 9, the tie bars 16 refer to reinforcing bars that bind the axial rebars laterally to prevent buckling of the axial reinforcing bars, and the upper bars 11 seated in the steel pipe seating grooves 111a and 111b. The remaining upper roots 11 and the lower roots 12 in the opposite positions except for the lower root 12 are interconnected, and the side roots 13 in the opposite positions are interconnected by a method of interconnecting each other.

The upper and lower muscles 11 and 12 inserted into the first seating grooves 121a and the second seating grooves 122a are coupled to each other by the tie roots 16 in a direction perpendicular to the longitudinal direction of the reinforcing bars. The side roots 13 inserted into the third seating grooves 123a and the fourth seating grooves 124a are also coupled by the tie roots 16 in the same manner.

After backing up to the hoop muscles 15 and the tie muscles 16, the side muscles 13 are positioned in position and bound with a fastening line (not shown) to complete the assembly rebar network 1.

The completed assembled rebar network 1 is lifted by a crane and moved to the position where the column is to be installed.

4 and 5, the pillar installation step (S3), the lifting and position movement step (S31) of the reinforcing bar network, and the step (S32) for coupling the fixing reinforcement and the assembled reinforcing bar network.

10 is a perspective view showing the lifting of the assembled reinforcing bar network with a crane and moving the position, Figure 11 is a perspective view showing the assembly of the reinforcing steel bar to the reinforcing steel bars protruding from the top of the bottom concrete.

Referring to FIG. 10, the completed assembled rebar network 1 is lifted and moved through the crane 50, in which case the steel pipe 110 serves as a lifting bar, so unlike the conventional lifting method No lifting device is required. In other words, the lifting ring is installed on two or four sides of the steel pipe 110 and lifted through the crane 50 so that the lifting is facilitated.

The lifted assembled reinforcing bar 1 is moved to the upper side of the fixing bar 17 protruding from the top surface of the bottom concrete (B).

Referring to Figure 11, the lifted assembled reinforcing bar 1 is coupled by a fixing reinforcing bar 17 and a mechanical joint (coupler), in this case, since the coupler 20 is previously coupled to the upper end of the fixing bar 17 , Rotating the coupler 20 to the assembly reinforcing bar (1) side to couple the fixing reinforcing bar 17 and the reinforcing bar (1).

Of course, the lower end of the reinforcing bar constituting the assembled reinforcing bar 1 should be provided with a thread 10a by male threading.

Referring to FIG. 11, a part of the reinforcing bars constituting the assembling reinforcing bar 1 is mutually stepped with the fixing reinforcing bar 17, and in this case, the reinforcing bars seated on the jig 100 for reinforcing bar reinforcement with each other in advance. It must be deployed.

The method of jointly connecting some of the plurality of reinforcing bars with other reinforcing bars is called a half-joint, and is a method widely used in a mechanical joint method using a coupler.

Of course, the reinforcing reinforcing bar 1 and the fixing reinforcing bar 17 may be coupled to each other according to the transfer joint method in which all of the reinforcing bars constituting the reinforcing reinforcing bar 1 are joined at the same height. It is not limited by the method of coupling the reinforcing bar 1 and the anchoring bar 17.

12 is a cross-sectional view of the coupler shown in FIG. 11.

The coupler 20 according to the present embodiment has a hollow coupler body 21 and a guide part having a tapered surface 23 extending from one end of the coupler body 21 and decreasing in diameter toward the coupler body 21 side. (22).

Guide portion 22 having tapered surface 23 is fixed reinforcing bar 17 and reinforcing bar 17 even when the central axes of the reinforcing bars constituting reinforcing bar 40b do not coincide with each other. It serves to easily combine them.

That is, the reinforcing bars constituting the reinforcing reinforcing bar 1 by the guide unit 22 slide and move toward the coupler body 21, so that the reinforcing bar 17 and the reinforcing reinforcing bar 1 are not applied without excessive force. The effect which can be easily combined is aimed at.

In the method of pre-assembly the reinforcing steel mesh for reinforced concrete columns of the present invention, the rigidity of the completed assembled reinforcing steel mesh 1 is increased by framing the reinforcing steel mesh 1 using the reinforcing steel jig 100. Accordingly, when the reinforcing reinforcing bar (17) is combined with the lifting of the crane 50, the reinforcing reinforcing bar (1) can be self-supporting. Therefore, unlike the prior art, since the support by the additional support member is not required, cost reduction and air shortening are possible.

While specific embodiments of the invention have been described and illustrated above, it is to be understood that the invention is not limited to the described embodiments, and that various modifications and changes can be made without departing from the spirit and scope of the invention. It is obvious to those who have. Therefore, such modifications or variations are not to be understood individually from the technical spirit or point of view of the present invention, the modified embodiments will belong to the claims of the present invention.

1 is a perspective view showing a state of the assembled reinforcing bar network completed by the pre-assembly method of the reinforcing steel bar for reinforced concrete pillars according to an embodiment of the present invention.

FIG. 2 is a perspective view of the reinforcing jig of FIG. 1, and FIG. 3 is a perspective view of the auxiliary jig of FIG. 1.

Figure 4 is a flow chart of a method of pre-assembly reinforcing steel bar for reinforced concrete pillars according to an embodiment of the present invention, Figure 5 is a detailed flow chart of FIG.

Figure 6 is a perspective view showing a state of the reinforcing bar disposed on the rebar assembly holder and the spacing member.

7 is a flowchart illustrating a sequence of coupling reinforcing bars to a rebar assembling jig.

8 is a perspective view showing a state of manufacturing a temporary assembled reinforcing bar network.

9 is a schematic front view of the assembled rebar network of FIG. 1.

10 is a perspective view showing a state of lifting the assembly rebar network with a crane to move the position.

FIG. 11 is a perspective view illustrating the assembling of the reinforcing steel bars to the fixing bars protruding from the upper surface of the bottom concrete, and FIG. 12 is a cross-sectional view of the coupler shown in FIG. 11.

* Description of the symbols for the main parts of the drawings *

100: reinforcing steel jig 110: steel pipe

111a, 111b: steel pipe seating groove 112: pinhole

120: frame 120a: frame seating groove

121: first root position 121a: the first seating groove

122: second back muscle 122a: second seating groove

123: third back muscle 123a: third seating groove

124: fourth back muscle 124a: fourth seating groove

130: fixed pin 200: auxiliary jig

210: steel pipe 211: auxiliary seating groove

212: auxiliary pin hole 220: connection bar

300: reinforcing bar for mounting 311: pedestal

312: rebar support 313: fixed block

400: spacing member 10: reinforcing bar 10a: thread 11: upper bar 12: lower bar 13: side muscle 15: hoop muscle 16: tie bar 17: fixing bar 20: coupler 21: coupler body 22: guide 23: tapered surface 1 Assembly Rebar

B: Floor concrete 50: Crane

Claims (17)

Disposing a plurality of reinforcing steel jig at predetermined intervals along the longitudinal direction of the reinforcing bars; Manufacturing a reinforcing bar network by coupling reinforcing bars to the reinforcing bar jig; And Lifting the reinforcing bar network and combining it with a pre-installed floor concrete, The plurality of rebar assembling jig, A pair of steel pipes spaced apart from each other and erected upright during the pre-assembly operation of the rebar network to support the rebar; And Coupled to the pair of steel pipe to support the reinforcement and prefabrication method of the reinforcing steel bar for reinforced concrete pillars, characterized in that it comprises a frame for reinforcing the rigidity of the reinforcing steel network. The method of claim 1, At least one end of both ends of the steel pipe is formed with a steel pipe seating groove to be seated, The frame assembling method of the reinforcing steel bar for reinforced concrete pillars, characterized in that the frame is provided with a plurality of frame seating grooves are mounted along the outer region of the frame. The method of claim 2, In the steel pipe, Pinholes are formed in a direction intersecting with the forming direction of the steel pipe seating groove at a position adjacent to the steel pipe seating groove, In the pinhole, Prefabrication method of the reinforcing steel bar for reinforced concrete pillars, characterized in that the fixing pin is inserted for fixing the rebar seated in the steel pipe seating groove. The method of claim 3, The frame is a pre-assembly method of the reinforcing bar for reinforced concrete pillars, characterized in that the four frame members are interconnected rectangular frame. The method of claim 4, wherein The frame seating grooves formed in the frame member forming the left and right sides of the frame of the plurality of frame seating grooves, Prefabrication method of the reinforcing bar for reinforcement concrete pillars, characterized in that the one side portion is an elliptical shape inclined downward. The method of claim 5, The steel pipe has a 'c' shaped cross section, The fixing pin is a prefabricated method of the reinforcing steel bar for reinforced concrete pillars, characterized in that the tapered pin. The method of claim 1, Before placing the jig for reinforcing bars, And arranging the reinforcing bars for reinforcing concrete columns in the reinforcing bar mounting bracket installed adjacent to the reinforcing bar jig. The method of claim 7, wherein Disposing the reinforcing bar in the rebar assembly holder, Disposing at least one spacer member in a longitudinal direction of the reinforcing bar at a lower side of the rebar assembly holder; Disposing reinforcing bars on the upper surface of the spacer; And Prefabrication method of the reinforcing bar for reinforced concrete pillars comprising the step of placing the reinforcing bar in the upper portion of the reinforcing rod for assembling. The method of claim 2, Coupling the reinforcing bar to the reinforcing jig for assembly, Reinforcing the reinforcing bar in the steel pipe seating groove, and fixing the reinforcing bar by fastening the fixing pin to the pin hole; And Prefabrication method of the reinforcing steel bar for reinforced concrete pillars comprising the step of seating the reinforcing bar in the frame seating groove. The method of claim 9, Coupling the reinforcing bar to the reinforcing jig for assembly, Placing at least one auxiliary jig between the reinforcing jig for assembling the spaced apart from each other, and the step of assembling the reinforcing bar for reinforced concrete pillars further comprising the step of coupling the reinforcement to the auxiliary jig. The method of claim 10, The auxiliary jig, A pair of steel pipes spaced apart from each other and erected upright during the pre-assembly operation of the rebar network; And At least one connecting bar for connecting the pair of steel pipes with each other, At least one end of the two ends of the pair of steel pipes prefabricated method of the reinforcing bar for reinforced concrete pillars, characterized in that the auxiliary seating groove is formed in which the reinforcing bar is formed. The method of claim 11, Coupling the reinforcing bar to the reinforcing jig for assembly, And reinforcing the reinforcing steel bars in the reinforcing steel bar comprising a reinforcing steel bar consisting of reinforcing steel bars inserted into the steel pipe seating grooves and reinforcing steel bars inserted into the frame seating grooves. The method of claim 12, Coupling the reinforcing bar, Coupling a hoop muscle along a circumference of the prefabricated rebar network; And Reinforcing the reinforcing bar for reinforced concrete pillars, comprising the step of coupling each other between the reinforcing bars inserted into the frame seating groove. The method of claim 13, Lifting the reinforcing bar network and combining with the bottom concrete, Lifting the reinforcing bar network and moving it to an upper part of the fixing bar protruding from the upper surface of the bottom concrete; And And a method of assembling the reinforcing steel mesh for reinforced concrete pillars, comprising the step of coupling the moved reinforcing steel mesh with the anchored reinforcing steel. The method of claim 14, Combining the reinforcing bar and the anchoring rebar, The method of prefabricating the reinforcing bar for reinforced concrete pillars, characterized in that for screwing the lower end of the reinforcing bar and the upper end of the fixing rebar by a coupler. The method of claim 15, The coupler is, A screw thread is formed on an inner circumferential surface thereof, the coupler body having a hollow shape such that rebar is inserted; And And a guide portion extending from at least one of both ends of the coupler body and having a tapered surface whose diameter decreases toward the coupler body side. The method of claim 16, The method of prefabricating the reinforcing bar for reinforced concrete pillars, characterized in that the reinforcing bar and the anchoring reinforcing bar is half-sealed.

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