KR200406255Y1 - Jointing Structure of Steel Reinforcement with Jointer - Google Patents

Abstract

The present invention relates to a reinforcing bar joint structure using a connector, and more particularly, a coupler and a joint pipe which are mutually screwed into a connector connecting each end of the reinforcing bar to extend the length of the reinforcing bar when reinforcing the reinforcing bar in concrete construction. It relates to the reinforcing bar joint structure used.

Reinforcing bar joint structure according to an embodiment of the present invention, the cutting groove and the cutting groove to insert a part of the reinforcing bar including the two reinforcing rods, the threaded tubular joint pipe and the head portion is formed at the end And a pair of couplers each of which has a receiving portion open to one side opposite to and a thread for screwing to the threads of the fitting pipe, the coupler being both sides in a state where a part of the reinforcing bar including the head is inserted into the incision groove. It characterized in that the reinforcing bar by screwing to the joint pipe.

According to the present invention described above, when connecting the two reinforcing bars used in the construction site by connecting the reinforcing bars easily using the coupler and the joint pipe to secure the strength and quality of the connection of the connector, the reinforcing bar connection work is very convenient .

Rebar, end connections, couplers, fittings, precast concrete, fillers.

Description

Joining Structure of Steel Reinforcement with Jointer}

1 is a perspective view of a connector applied to the present invention,

2 is a perspective view of a reinforcing bar structure according to an embodiment of the present invention,

3 is a cross-sectional view in the concrete pouring state in FIG.

4 is a cross-sectional view of a reinforcing bar structure according to another embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10a, 10b: PC Concrete 20a, 20b, 20c, 20d: Coupler

22a, 22b, 22c, 22d: receptacle 24a, 24b, 24c, 24d: thread

26a, 26b, 26c, 26d: incision groove 28a, 28b, 28c, 28d: screw bolt head

30a, 30b: joint pipe 32a, 32b: thread

40a, 40b: Reinforcing bar 42a, 42b: Head part

50: Filler 60: Concrete

The present invention relates to a reinforcing bar joint structure using a connector, and more particularly, a coupler and a joint pipe which are mutually screwed into a connector connecting each end of the reinforcing bar to extend the length of the reinforcing bar when reinforcing the reinforcing bar in reinforced concrete construction. It relates to the reinforcing bar joint structure used.

In the construction (civil engineering, construction, plant) site, rebar is processed and assembled to form a skeleton, and then concrete is built by pouring concrete.

Since the reinforcing bar is produced at a predetermined unit length (6-12 m) in the factory, it is most often necessary to connect the reinforcing bars in the longitudinal direction according to the size of the concrete structure.

In this case, in order for the connected reinforcing bars to withstand mechanical strength, the reinforcing bars and the reinforcing bars should be firmly connected to each other.

The overlapping method of connecting both rebars using a binding line, etc. by overlapping the ends of the reinforcing bars to a certain length, uses the principle of transferring stress by the attachment stress between the reinforcing bar and concrete. Although there is a very simple advantage, the adhesion stress may be below the allowable strength depending on the concrete construction state or curing state, there is a loss in the overlapping part, and there is a problem in the concrete placing where the reinforcing bar is overlapped in the place where there are many thick rebars .

The gas welding joint method, in which the ends of reinforcing bars are reinforced with each other and heated with a gas flame, melts and reinforces the reinforcing bars, uses the fast bonding principle of atomic diffusion motion of the reinforcing bars by standard temperature and pressure. Because the axis of reinforcing bars is in a straight line, it is a mechanically desirable form, which has the advantage of ensuring the quality of fatigue strength and aging strength.However, it is not a skilled worker, it cannot be constructed, it takes a lot of time, and a lot of construction cost. There is a problem.

The steel pipe crimping method, in which both rebar ends are inserted into the sleeve and crimped using a hydraulic jack, does not require the processing of the rebar ends and can work simultaneously with the reinforcing bar. However, the crimping hydraulic equipment is required and compared with other mechanical joints. There is a problem that the construction cost is expensive and a separate safety facility must be provided when working on a high place.

The semi-cylindrical inner circumferential surface is provided with a node groove in which a node groove is formed, and the node body is screwed together by using a coupler. It can be fastened in the field without being able to fasten the concrete, easy to pour concrete, and suppresses the separation of aggregates. However, construction is difficult and uneconomical.

The screw joint method of pre-processing rebar end to make thread and connecting by screwing with coupler has the advantage of excellent construction by using separate coupler, easy to pour concrete, and suppression of aggregate separation. Since the screw knitting is fixed, there is a problem in that the screw is well fastened and the end forming facility is provided.

The pre-set reinforcing joint, which preheats the end of the reinforcing bar and then forms the preheating end in a certain mold, and then connects it with a coupler, can upset the reinforcing bar by the frame so that it can maintain a constant quality and have excellent workability. Although there is an advantage, the workability is poor because the work is inserted into the coupler during end forming and reinforcing the reinforcing bar assembly, and when the coupler is poor, the end molding must be reassembled in an assembled state, and there is a problem of having an end forming facility.

The present invention has been devised to solve the above problems, the connection work is convenient, quality can be secured, shorten the air, cost can be reduced, in particular, easy to repair / reinforce the existing structure and is used in recent construction The purpose is to provide a reinforcing bar connection structure using connectors suitable for precast concrete products.

Reinforcing bar joint structure using a connector according to an embodiment of the present invention for achieving the above object, two reinforcing bar head portion is formed at the end, a threaded cylindrical pipe and a portion of the reinforcement including the head portion And a pair of couplers each having a threaded portion for screwing into a threaded portion of the accommodating portion and a threaded portion of the joint pipe, each of which is open to the opposite side of the incision groove and the incision groove so as to be inserted into the reinforcement groove including a head in the incision groove. Coupler is fixed to the reinforcing bar by screwing the coupling pipe at both sides in a state of being inserted.

Hereinafter, the configuration and operation of the embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a perspective view of a connector applied to the present invention.

As shown, the connector includes a pair of couplers 20a and 20b, and a joint pipe 30a screwed into the coupler 20a and 20b.

The joint pipe 30a has a cylindrical shape that is open in both directions, and a thread 32a is formed on an outer circumferential surface thereof.

Threads 24a and 24b are formed in the coupler 20a and 20b on the inner circumferential surface so as to be screwed together with the threads 32a of the joint pipe 30a.

Cylindrical receiving portions 22a and 22b are formed in one side of the coupler 20a and 20b, respectively, and the screw thread is formed on the inner circumferential surface of the coupler 20a and 20b in which the receiving portions 22a and 22b are formed. 24a and 24b are formed.

The coupler 20a, 20b on the unopened side is formed so that the incision grooves 26a, 26b pass through the center of the cylindrical receiving portions 22a, 22b from the outside to the inside so as to communicate with the receiving portions 22a, 22b. At this time, the sides of the incision grooves 26a and 26b are opened.

Side couplers 20a and 20b of the couplers 20a and 20b, that is, side couplers 20a and 20b having open cutouts 26a and 26b, are easily screwed to the coupler 20a and 20b to the joint pipe 30a. Angled screw bolt heads 28a and 28b are formed to protrude.

In the cutting grooves 26a and 26b, portions of the cutting grooves 26a and 26b into which the heads 42a and 42b having a larger size than the two reinforcing bars 40a and 40b are inserted are formed in a rectangular shape, and the head of the reinforcing bars is formed in a rectangular shape. When both couplers 20a and 20b are screwed inside the joint pipe 30a in a state where the 42a and 42b are inserted, the heads 42a and 42b of the reinforcing bar are pressed and fixed.

Figure 2 is a perspective view of the reinforcing bar structure according to an embodiment of the present invention, Figure 3 is a cross-sectional view in the concrete pouring state in FIG.

As shown, the precast concrete (10a, 10b, hereinafter referred to as PC concrete) manufactured in the factory is the reinforcing bar (40a, 40b) is reinforced and the ends of the reinforcing bars (40a, 40b) to be longitudinally connected PC concrete 10a, 10b is exposed to the outside.

The ends of the rebars 40a and 40b exposed to the outside are subjected to high heat treatment and forged to form heads 42a and 42b having a larger size than the reinforcing bar bodies. The shapes of the heads 42a and 42b are perpendicular to each other. Round shape.

The heads 42a and 42b are formed by a mechanical method of tapping or pressing the ends of the rebars 40a and 42a with a hammer or the like, and the melting points of the rebars 40a and 40b are high, so that the ends of the reinforcing bars are heated at high temperatures. The end of the reinforcing bar is placed in a mold or mold that is retracted into a constant shape in a state of being heated by forging.

The PC concrete (10a, 10b) is to reinforce the reinforcing bars (40a, 40b) in the factory of the manufacturing place and to cast concrete in advance shorten the construction period and increase the quality of the concrete.

The coupler 20a, 20b is partially screwed from both sides to the outside of the joint pipe 30a, so that the incision grooves 26a, 26b face the same direction, both PC concrete 10a, 10b outwards. The cutting grooves 26a and 26b of the couplers 20a and 20b are simultaneously inserted into the ends of the reinforcing bars 40a and 40b including the exposed head and inserted into the centers of the cylindrical receiving portions 22a and 22b.

Next, the couplers 20a and 20b coupled to the fitting pipe 30a by screwing together are rotated so that the heads 42a and 42b of the reinforcing bar are brought into close contact with the inner surface of the coupler having a rectangular cutout. Fix it.

Instead of screwing the coupler 20a, 20b to the joint pipe 30a by the other joint connection method, the ends of the reinforcing bars 40a, 40b are inserted into the respective cutting grooves 26a, 26b of the receiving portions 22a, 22b. Centered.

Next, the couplers 20a and 20b are screwed to the joint pipe 30a by rotation so that the heads 42a and 42b of the reinforcing bars are brought into close contact with the inner surface of the coupler having a rectangular cutout. .

When the coupler (20a, 20b) is rotated by holding the screw bolt head (28a, 28b) protruding angularly on the side of the coupler can be easily rotated.

In the state where the reinforcing bars 40a and 40b are connected by the coupler 20a and 20b and the joint pipe 30a, the mortar and the non-shrinkable resin are accommodated in the receiving portions 22a and 22b through the cutout grooves 26a and 26b. After filling with the filling material 50, such as special concrete or chemical liquid, and then curing the concrete 60 between the two PC concrete (10a, 10b) by coupling couplers (20a, 20b) and joint pipe (30a) And the ends of the rebars 40a and 40b are embedded.

In the above process, the ends of the reinforcing bars 40a and 40b are screwed and fixed to the joint pipe 30a while being inserted into the couplers 20a and 20b, thereby being reinforced by the filler 50 and the concrete 60. The joint connection in the longitudinal direction of the rebars 40a and 40b is completed.

4 is a cross-sectional view of a reinforcing bar structure according to another embodiment of the present invention.

Different from the embodiment of FIG. 3, the thread 32b is formed on the inner circumferential surface of the joint pipe 30b, and the screw thread is screwed with the thread 32b of the joint pipe 30b on the outer circumferential surfaces of the coupler 20c, 20d. 24c and 24d are formed, and the inner surfaces of the receiving portions 22c and 22d of the coupler 20c and 20d and the cutout grooves 26c and 26d are rounded.

By forming the cutout grooves 26c and 26d and the receiving portions 22c and 22d as described above, the coupler 20c and 20d are inserted even if the reinforcing bars 40a and 40b are not on the same axis. ) Can be screwed on.

In the above-described configuration, the reinforcing bars 40a and 40b are arranged on the factory-made PC concrete 10a and 10b, and the ends of the reinforcing bars 40a and 40b to be jointed in the longitudinal direction are exposed to the outside of the PC concrete 10a and 10b. do.

The couplers 20c and 20d are partially screwed into the inside of the joint pipe 30b so that the cutting grooves 26c and 26d face the same direction, and are exposed to the outside of both PC concrete 10a and 10b. The cutting grooves 26c and 26d of the couplers 20c and 20d are simultaneously inserted into the ends of the rebars 40a and 40b including the head and inserted into the centers of the cylindrical receiving portions 22c and 22d.

Next, the couplers 20c and 20d coupled to the joint pipe 30b are screwed together by rotation so that the heads 42a and 42b of the reinforcing bar are brought into close contact with the inner surface of the coupler having a rectangular cutout. Fix it.

At this time, the accommodating portions 22c and 22d of the coupler 20c and 20d and the incision grooves 26c and 26d in the longitudinal direction are rounded so that the ends of both reinforcing bars 40a and 40b are not located in a straight line. Even if the position is not twisted, the ends of the reinforcing bars 40a and 40b may be inserted into the couplers 20c and 20d to screw the couplers 20c and 20d into the fitting pipe 30b.

Instead of screwing the couplers 20ca and 20d to the joint pipe 30b by the other joint connection method, the ends of the reinforcing bars 40a and 40b are inserted into the respective cutting grooves 26c and 26d, respectively. Centered.

Next, the couplers 20c and 20d are screwed to the joint pipe 30b by rotation so that the heads 42a and 42b of the reinforcing bar are brought into close contact with the inner surface of the coupler having a rectangular cutout groove, thereby being fixed. .

When the couplers 20c and 20d are rotated, the screw bolt heads 28c and 28d protruding from the side of the coupler can be easily rotated.

Even at this time, the receiving portions 22c and 22d of the coupler 20c and 20d and the incision grooves 26c and 26d in the longitudinal direction are rounded, so that even if the ends of both the rebars 40a and 40b are positioned to be distorted, End portions 40a and 40b may be inserted into the couplers 20c and 20d to screw the couplers 20c and 20d into the joint pipe 30b.

In the state where the reinforcing bars 40a and 40b are connected to each other by the coupler 20c and 20d and the joint pipe 30b, the mortar and the non-shrinkable resin are accommodated in the receiving portions 22c and 22d through the cutout grooves 26c and 26d. After filling with filler 50 such as special concrete or chemical liquid, and then curing the concrete 60 between the two PC concrete (10a, 10b) by coupling couplers (20c, 20d) and joint pipe (30b) And the ends of the rebars 40a and 40b are embedded.

In the same process as the end of the reinforcing bar (40a, 40b) is inserted into the coupler (20c, 20d) screwed to the fitting pipe (30b) is fixed, by being reinforced by the filler 50 and concrete 60 The joint connection in the longitudinal direction of the rebars 40a and 40b is completed.

In the above drawings, the diameters of both rebars 40a and 40b are illustrated to be the same, but the core diameters of the two rebars may be different from those of the present invention.

In addition, in the embodiment of FIGS. 1 to 3, the receiving portions 22a and 22b and the rectangular cutout grooves 26a and 26b may be rounded.

In the drawings and the detailed description of the preferred embodiments are disclosed, the specific terminology used herein is for the purpose of describing the invention only, limiting the scope of the invention as defined in the meaning or utility model registration claims. It was not used to

Therefore, those skilled in the art can be various modifications and other equivalent embodiments from this, and the true technical protection scope of the present invention should be determined by the technical spirit of the utility model registration claims.

As described above, according to the present invention, when connecting the reinforcing bar used in the construction site by connecting the reinforcing bars easily by using the coupler and the joint pipe to secure the strength and quality by the rigidity of the connector, convenience when connecting the reinforcing bar In addition, it can reduce the air and reduce the cost, and is also useful for the construction of the reinforcement, remodeling, and construction of precast concrete.

Claims (9)

Two reinforcing bars having a head portion at an end portion thereof; Threaded cylindrical pipes; And A pair of couplers each having a cutting groove and a receiving thread that is open to one side of the cutting groove so as to insert a portion of the reinforcing bar including the head and a screw thread that is screwed to the threads of the joint pipe; Reinforcing bar joint structure using a connector, characterized in that the coupler is screwed to the joint pipe from both sides in a state in which a portion of the reinforcing bar including the head is inserted into the incision groove to fix the rebar. The method of claim 1, The receptacle is formed in communication with the incision groove reinforcing joint structure using a connector characterized in that the receiving portion is filled by the filler introduced through the incision groove. The method according to claim 1 or 2, Reinforcing bar joint structure using a connector, characterized in that the receiving portion and the incision groove is formed in one or both of the couplers rounded. The method of claim 3, wherein The reinforcing bar is a reinforced structure using a connector, characterized in that a part of the reinforcing bar including the head is embedded in the PC concrete. The method according to claim 1 or 2, The head portion is formed to be larger in size than the reinforcing body by forging by heating the end portion of the reinforcing bar at a high temperature, and the reinforcing bar joint using the connector characterized in that the head shape of the reinforcing bar in contact with the coupler has a right angle or a round shape. rescue. The method of claim 5, Reinforced joint structure using a connector, characterized in that the cutting groove is formed through the center of the receiving portion from the outside of the coupler to the inside. The method according to claim 1 or 2, A thread is formed on an outer circumferential surface of the joint pipe and a thread is formed on an inner circumferential surface on which an accommodation portion of the coupler is formed, so that the coupler is screwed to the outside of the joint pipe. The method according to claim 1 or 2, A thread is formed on the inner circumferential surface of the joint pipe and a thread is formed on the outer circumferential surface of the coupler, so that the coupler is screwed into the inner part of the joint pipe. The method according to claim 1 or 2, Reinforcing bar joint structure using a connector, characterized in that the screw bolt head is formed to protrude from the side of the coupler formed with the cutting groove.

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