HOOP LOCKING DEVICE

Abstract

A hoop locking device for locking a hoop installed to surround a plurality of main reinforcements to give a transverse constraint force of the hoop is proposed. The hoop locking device includes: first clips configured to fix opposite ends of hoops, which cross each other while passing by one of the plurality of main reinforcements, each of the first clips comprises: an annular ring formed to surround an overlapping portion of the hoops disposed to vertically overlap each other; a leg part extending radially from opposite ends of the annular ring; and anchor parts formed to be bent rearwards from ends of the leg parts, respectively, and the opposite ends of the hoops are bent by 90 degrees while passing by the main reinforcement.

Description

CROSS-REFERENCES TO RELATED APPLICATIONS

This application claims priority to and the benefit of Korean Patent Application No. 10-2020-0050157, filed on Apr. 24, 2020, the disclosure of which is incorporated herein by reference in its entirety.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present disclosure relates to a hoop locking device, and more particularly, to a hoop locking device for locking a hoop installed to surround a plurality of main reinforcements to give a transverse constraint force of the hoop.

2. Description of the Prior Art

Hoops are generally installed in a transverse direction of a circumference of a main reinforcement in a reinforcement concrete (or steel frame reinforcement concrete) compressed member or vertical member, such as a column, a beam, a shear wall, or an abutment of a building structure to fix a main reinforcement of a reinforcement concrete vertical member, prevent buckling of the main reinforcement, restrain transverse deformation (buckling) of the main reinforcement due to a vertical load, and increase the strength and ductility of a concrete core of a vertical member of reinforcement concrete, thereby preventing a brittle fracture, by which a reinforcement concrete vertical member is instantaneously broken. In particular, opposite ends of a hoop that surrounds a column main reinforcement are folded by a 135 degree hook to be fixed to a column core.

FIG. 1 is a plan view illustrating a state in which hoops connect facing main reinforcements in a reinforcement concrete column, a beam, or a shear wall are disposed according to the related art.

In FIG. 1, main reinforcements 2 are installed in a rectangular shape longitudinally and transversely at a predetermined interval in a reinforcement concrete column 1 that is an example of a reinforcement concrete vertical member, external hoops 3 are installed transversely around the outside of the main reinforcements along the axial direction of the main reinforcements 2, and internal hoops 4 that fasten the facing main reinforcements 2 are installed in the interior of the external hoops 3 at a predetermined interval.

Because the external hoops and the internal hoops (cross-tie bars) fasten a main reinforcement in a reinforcement concrete column, a bar, and a shear wall according to the related art, the main reinforcement can resist against an earthquake when the earthquake occurs while restraining buckling of the column main reinforcement (an anti-earthquake design), and concrete in the column core is constrained by the internal and external hoops so that the docility of the reinforcement concrete column can be improved.

In the internal reinforcement structure of a reinforcement concrete structure according to the related art illustrated in FIG. 1, opposite ends of the external hoops 3 can be buried in the concrete core so that the external hoops 3 may be fixed and secured by bending the external hoops 3 that pass by the corner portions of the main reinforcement 5 by 135 degrees at one location of the corner portion of the main reinforcement 5, at which the opposite ends E1 and E2 of the external hoops 3 displayed at the left lower end thereof meet each other such that the opposite ends of the external hoops 3 face the inner side of the concrete structure. However, in the construction step, construction may be made without sufficiently bending the opposite ends of the external hoops 3.

Meanwhile, FIGS. 2 and 3 disclose a hoop locking device 10 capable of fixing the opposite ends of the external hoops 3 after the external hoops 3 are bent by 90 degrees without bending the external hoops 3 by up to 135 degrees. FIG. 2 is a perspective view of a hoop locking device for locking hoops installed in a main reinforcement according to the related art. FIG. 3 is an exploded perspective view of the hoop locking device according to the related art.

As illustrated in FIGS. 2 and 3, the hoop locking device 10 according to the related art includes a body 12, a horizontal member 20, a vertical member 30, and movement preventing member 40 (in detail, 41, 42, 43-1, 43-2, 43-3, and 44). The hoop locking device 10 is installed in a hoop 3, and the hoop 3 is installed in a main reinforcement 2 to function to restraining buckling of the main reinforcement 2.

However, the structure of the hoop locking device according to the related art is complex and it is difficult to construct the hoop locking device in a narrow space.

Furthermore, according to the related art, the external hoop 3 and the main reinforcement 2 may be directly fastened to each other by a fastening line to lock the external hoop 3. However, the method of fastening the external hoop 3 and the main reinforcement 2 by using the fastening line weakens the durability of the concrete structure due to a weak fastening state caused by a construction environment (a weather or an impact) and the like. Furthermore, a rotational force is given to the main reinforcement to couple the main reinforcement by using a spiral coupler and a spiral main reinforcement for promptness in a process of coupling a reinforcement net to the existing main reinforcement 2 after making the reinforcement net according to a reinforcement assembly method, and then, there is a danger of a low coupling force or an easy separation due to the rotational force when the external hoop 3 and the main reinforcement 2 are coupled to each other by the fastening line.

Meanwhile, another technology according to the related art is illustrated in FIG. 4.

The technology discloses a hoop locking device including a first body 50 provided to abut an outer surface of the hoop 3, second bodies 70 extending from opposite ends of the first body 50 to extend inwards and between which the hoop 3 is located, third bodies 80 provided at ends of the pair of second bodies 70 to extend in different directions, and an introduction hole 90.

However, because the technology used a plate shape, and the fastening force of concrete is weak because the concrete is not perfectly introduced and does not make contact as a whole in the construction. Therefore, a separate configuration of the introduction hole 90 is necessary to solve the problem.

Furthermore, because the technology includes only the second bodies 70 formed to extend from the first body 50 formed vertically and the third bodies 80 formed at opposite ends of the second bodies 70 vertically in different directions, it fails to suggest a configuration for fixing the hoop locking device to another object. Accordingly, because the technology only pursue easiness of coupling with the hoop while not achieving a settling force of the third bodies 80, the whole hoop locking device may be separated together with the reinforcement if a severe external force such as an earthquake is applied.

PRIOR TECHNICAL DOCUMENTS

Patent Documents

(Patent Document 1) Korean Patent No. 10-1750792 (Jun. 27, 2017)

(Patent Document 2) Korean Patent No. 10-1457114 (Nov. 6, 2014)

SUMMARY OF THE INVENTION

The present disclosure has been made in an effort to solve the above-mentioned problems, and provides a hoop locking device that can lock a hoop for giving a transverse constraint force of the hoop with a simple structure.

According to an aspect of the present disclosure, there is provided a hoop locking device for locking an external hoop installed to surround a plurality of main reinforcements on the outside thereof, the hoop locking device including: first clips configured to fix opposite ends of hoops, which cross each other while passing by one of the plurality of main reinforcements, wherein each of the first clips includes: an annular ring formed to surround an overlapping portion of the hoops disposed to vertically overlap each other; a leg part extending radially from opposite ends of the annular ring; and anchor parts formed to be bent rearwards from ends of the leg parts, respectively, wherein the opposite ends of the hoops are bent by 90 degrees while passing by the main reinforcement, and wherein the leg part is formed to extend radially long from the opposite ends of the annular ring to be disposed in and fixed to a concrete core.

The hoop locking device may further include: second clips configured to prevent separation of the first clips from the hoops, each of the second clips may include: an arc-shaped hook coupled to one of the two leg parts; a stopper configured to be stopped the other of the two leg parts to restrain the other leg part from being widened; and a connector connecting the arc-shaped hook and the stopper, and an absorber for extending and contracting the connector may be formed in the connector.

The hoop locking device may further include fastening clips configured to fasten the hoops to the main reinforcement, each of the fastening clips may include: a first fastening hook formed to surround the main reinforcement; a second fastening hook extending from the first fastening hook and formed to surround the hoop; and a third fastening hook extending from the second fastening hook, and an absorber for easy deformation of the first fastening hook may be formed in the first fastening hook.

Each of the hoops may include linear portions and a corner portion, and each of the fastening clip may include flat shapes installed in the linear portions and a corner shape installed in the corner portion.

The third fastening hook may stop a tool for pulling the first fastening hook and the second fastening hook, such that the main reinforcement and the hoop are attached to each other by the first fastening hoop and the second fastening hoop.

The first fastening hook may be formed to be open toward the outside, the second fastening hook may be formed to be bent downwards from opposite ends of the first fastening hook so as to be opened toward the inner side, and the third fastening hook may be bent downwards from the second fastening hook to be opened toward the outside.

The hoop locking device of the present disclosure can effectively lock a hoop with a simple structure.

Furthermore, the hoop locking device of the present disclosure is less influenced by an external environment, can allow a reinforcement to be continuously constructed while a reinforcement net installed is not scattered and the shape of the reinforcement net is maintained even though a rotational force is given to a main reinforcement when a spiral main reinforcement is coupled to the spiral coupler in the case in which the preassembled reinforcement net is coupled to the main reinforcement installed in advance, and can prevent weakening of the main reinforcement and the hoop.

Furthermore, the hoop locking device of the present disclosure can easily couple the second fastening hook to the hoop by forming the absorber in the first fastening hook such that the first fastening hook is widened.

Furthermore, the hoop locking device of the present disclosure can use a tool when the main reinforcement and the hoop are attached to each other, by forming the third fastening hook.

Further, the hoop locking device of the present disclosure can be applied to both the corner portion and the linear portion.

Furthermore, the force transmission mechanism is that, when the main reinforcement of the corner portion, where the ends of the hoops cross each other, is about to buckle in a buckling direction, a bending moment is generated in the bending portion of the 90 degree hook of the hoop so that an end of the hoop is deformed to be straightened toward a deformation direction, and the settling force of the first clips of the present disclosure toward a direction of the concrete core is applied as a pressing force on ends of the hoop's 90 degree hook against the spreading deformation. That is, there is an effect of a resistant force as an effect of a lever.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects, features, and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a plan view illustrating a state in which hoops connect facing main reinforcements in a reinforcement concrete column, a beam, or a shear wall are disposed according to the related art;

FIG. 2 is a perspective view of a hoop locking device for locking hoops installed in a main reinforcement according to the related art;

FIG. 3 is an exploded perspective view of the hoop locking device according to the related art;

FIG. 4 is a perspective view of another hoop locking device according to the related art;

FIG. 5 is a perspective view of a first clip according to an embodiment of the present disclosure;

FIG. 6 is an exemplary view of a use state of the first clip according to the embodiment of the present disclosure;

FIG. 7A-7B are exemplary views of a use state of a second clip according to the embodiment of the present disclosure;

FIG. 8 is a perspective view of a fastening clip installed at a linear portion of an external hoop according to the embodiment of the present disclosure;

FIG. 9 is an exemplary view of a use state of the fastening clip at the linear portion of the external hoop according to the embodiment of the present disclosure;

FIG. 10 is a plan view of the fastening clip of the linear portion of the external hoop according to the embodiment of the present disclosure;

FIG. 11 is a perspective view of the fastening clip installed at a corner portion of the external hoop according to the embodiment of the present disclosure;

FIG. 12 is an exemplary view of a use state of the fastening clip at the corner portion of the external hoop according to the embodiment of the present disclosure; and

FIG. 13 is a plan view of the fastening clip at the corner portion of the external hoop according to the embodiment of the present disclosure.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure relates to a hoop locking device for locking hoops installed to surround a plurality of main reinforcements. A device for locking a hoop according to an embodiment of the present disclosure includes first clips, second clips and fastening clips. In the embodiment of the present disclosure, a hoop refers to an external hoop.

The first clips fix opposite ends of the hoops to give a transverse constraint force of the hoops to lock the hoops that surround the outside of the plurality of main reinforcements. The second clips prevent the first clips that fix the opposite ends of the hoops from being separated from the hoops, in addition to the first clips. Furthermore, the fastening clips lock the hoops by binding the main reinforcements and the hoops.

The first clips, the second clips, and the fastening clips may be properly combined in the interior of a concrete member of a structure, if necessary, to effectively lock the hoops.

Each of the first clips may include a linear shape and a flat shape, and in the embodiment, a linear shape will be illustrated in the drawings and described as a reference.

Hereinafter, the present disclosure will be described in detail with reference to the accompanying drawings.

As illustrated in FIGS. 5 and 6, the first clips are adapted to give a transverse constraint force by locking the hoops 200 installed to surround the plurality of main reinforcements 100 on the outside thereof, and fix the opposite ends of the hoops 200. That is, the opposite ends of the hoops 200 installed to surround the plurality of main reinforcements 100 are bent by an angle of 90 degrees when the hoops 200 meet any one of the main reinforcements 100. Here, the main reinforcement 100 is one of the main reinforcements 100, which is located at a corner portion C, and the opposite ends of the hoops 200 that pass by the main reinforcement 100 and are bent by 90 degrees are overlap each other. Accordingly, the first clips coupled and fix the overlapping portions of the hoops 200 on opposite sides of the main reinforcement 100.

In detail, as illustrated in FIG. 6, each of the first clips 300 includes an annular ring 310 formed to surround an overlapping portion of the hoops 200, a leg part 320 extending radially from opposite ends of the annular ring 310 and fixed to a concrete core, and anchor parts 330 formed to be bent rearwards from ends of the leg parts 320, respectively. The leg parts 320 extending from the opposite ends of the annular ring 310 are formed such that the interval between the leg parts 320 becomes wider as it goes from the annular ring 310. Furthermore, the anchor parts 330 increase the fixing effect of the leg parts 320.

In detail, the force transmission mechanism is that, when the main reinforcement 100 of the corner portion, where the ends of the hoops 200 cross each other, is about to buckle in a buckling direction D1, a bending moment is generated in the bending portion H of the 90 degree hook of the hoop so that an end of the hoop 200 is deformed to be straightened toward a deformation direction D2, and the settling force of the first clips 300 of the present disclosure toward a direction D3 of the concrete core is applied as a pressing force on ends of the hoop's 90 degree hook against the spreading deformation. That is, there is an effect of a resistant force as an effect of a lever.

That is, the first clips 300 may constraints of the hoops 200 to prevent buckling of the main reinforcement 100 as the annular rings 310 surround and fix the overlapping portion of the hoops 200 and the leg parts 320 are fixed to the concrete core of the reinforced concrete member such as a column.

Furthermore, if the first clips 300 of the present disclosure are also installed at portions, at which the 90 degree hook portions of the inner hoop (a cross-tie bar) and the linear portion of the external hoop cross each other, a settling force toward the core is also applied to the 90 degree hook portion of the inner hoop 200 so that the first clips 300 have an effect of resisting against the spearing deformation of the main reinforcement 100 (the main reinforcement except for the corner portion) due to bucking as a lever effect.

As illustrated in FIGS. 7A-7B, each of the second clips 400 includes an arc-shaped hook 410 coupled to one of the two leg parts 320, a stopper 420 configured to be stopped the other of the two leg parts 320 to restrain the other leg part from being widened, and a connector 430 connecting the arc-shaped hook 410 and the stopper 420. Furthermore, an absorber 431 for extending and contracting the connector 430 is formed in the connector 430.

Because the leg parts 320 of the first clips 300 are prevented from being widened, by the second clip 400, the first clip 300 can be prevented from being separated from the hoop 200 due to an impact or the like.

Meanwhile, when the preassembled main reinforcement 100 of column nets and a screw type coupler of the reinforcement installed in advance are coupled to each other, a rotational force should be given to the net main reinforcement 100 for assembling. Then, the rotational fastening of the main reinforcement 100 may be allowed while the preassembled column net shape is maintained even though a rotational force is given to the main reinforcement 100 of the net shape. The fastening clips are adapted to couple the hoops 200 installed to surround the plurality of main reinforcements 100 of the preassembled reinforcement nets to the main reinforcement 100. Then, the used main reinforcement 100 may be a spiral reinforcement. If the connection end of the main reinforcement 100 is extruded spirally, the spiral reinforcement may not be used.

As illustrated in FIG. 8, each of the fastening clips includes a first fastening hook 510, a second fastening hook 520, and a third fastening hook 530.

As illustrated in FIGS. 9 and 10, the first fastening hook 510 is formed to surround the main reinforcement 100. Furthermore, the first fastening hook 510 may be opened toward the outside of the concrete column. Furthermore, an absorber 511 that facilitates deformation of the first fastening hook 510 is formed in the first fastening hook 510. When the second fastening hook 520 is coupled to the hoop 200 after the first fastening hook 510 is coupled to the main reinforcement 100, the second fastening hook 520 may be easily coupled to the hoop 200 by causing the absorber 511 to deform the shape of the first fastening hook 510. That is, because the absorber 511 is formed in the first fastening hook 510, the second fastening hook 520 is widened to be coupled to the hoop 200.

The second fastening hook 520 is formed to extend from the first fastening hook 510 so as to surround the hoop 200. That is, the second fastening hook 520 is bent toward the lower side from the opposite ends of the first fastening hook 510 to be opened toward the inner side of the concrete column. As described above, by forming the absorber 511 in the first fastening hook 510, the second fastening hook 520 may be easily coupled to the hoop 200 after the first fastening hook 510 is coupled to the main reinforcement 100.

The third fastening hook 530 is formed to extend from the second fastening hook 520. That is, the third fastening hook 530 is bent downwards from the second fastening hook 520 to be opened toward the outside of the concrete column. The third fastening hook 530 does not function to directly couple the main reinforcement 100 and the hoop 200. The third fastening hook 530 stops a tool for pulling the first fastening hook 510 and the second fastening hook 520, such that the main reinforcement 100 and the hoop 200 are attached to each other by the first fastening hoop 510 and the second fastening hoop 520. That is, the first fastening hook 510 and the second fastening hook 520 are opened in opposite directions because the main reinforcement 100 and the hoop 200 are coupled to each other so that the main reinforcement 100 and the hook 200 are easily attached to each other if the tool is stopped by the third fastening hook 530 to be pulled. Then, one side (or opposite sides) of the third fastening hook 530 is an arc-shaped hook.

The above-described fastening clip may include a corner shape B and a flat shape A according to an installation location thereof. The corner shaped fastening clip, as illustrated in FIG. 12, couples the main reinforcement 100 located at the corner portion C, and the bent hoops 200 while the second fastening hook 520 forms 90 degrees while surrounding the main reinforcement 100. Further, the flat fastening clip, as illustrated in FIG. 9, couples the linear portion S of the hoop, which is not bent, to the main reinforcement 100. The corner shaped fastening clip and the flat fastening clip have the same shape, and the second fastening hook may be coupled to the hoop 200 bent by 90 degrees as the interval between the second fastening hook 502 becomes wider as compared with the flat fastening clip.

The hoop locking device according to the present disclosure is not limited to the above-described embodiment, and may be variously modified and carried out without departing from the technical spirit of the present disclosure.

Claims

1. A hoop locking device for locking an external hoop installed to surround a plurality of main reinforcements on the outside thereof, the hoop locking device comprising:

first clips configured to fix opposite ends of hoops, which cross each other while passing by one of the plurality of main reinforcements,

wherein each of the first clips comprises:

an annular ring formed to surround an overlapping portion of the hoops disposed to vertically overlap each other;

a leg part extending radially from opposite ends of the annular ring; and

anchor parts formed to be bent rearwards from ends of the leg parts, respectively,

wherein the opposite ends of the hoops are bent by 90 degrees while passing by the main reinforcement, and

wherein the leg part is formed to extend radially long from the opposite ends of the annular ring to be disposed in and fixed to a concrete core.

2. The hoop locking device claim 1, further comprising:

second clips configured to prevent separation of the first clips from the hoops,

wherein each of the second clips comprises:

an arc-shaped hook coupled to one of the two leg parts;

a stopper configured to be stopped the other of the two leg parts to restrain the other leg part from being widened; and

a connector connecting the arc-shaped hook and the stopper, and

wherein an absorber for extending and contracting the connector is formed in the connector.

3. The hoop locking device claim 1, further comprising:

fastening clips configured to fasten the hoops to the main reinforcement,

wherein each of the fastening clips comprises:

a first fastening hook formed to surround the main reinforcement;

a second fastening hook extending from the first fastening hook and formed to surround the hoop; and

a third fastening hook extending from the second fastening hook, and

wherein an absorber for easy deformation of the first fastening hook is formed in the first fastening hook.

4. The hoop locking device claim 3, wherein each of the hoops comprises linear portions and a corner portion, and

wherein each of the fastening clip comprises flat shapes installed in the linear portions and a corner shape installed in the corner portion.

5. The hoop locking device claim 3, wherein the third fastening hook stops a tool for pulling the first fastening hook and the second fastening hook, such that the main reinforcement and the hoop are attached to each other by the first fastening hoop and the second fastening hoop.

6. The hoop locking device claim 3, wherein the first fastening hook is formed to be open toward the outside,

wherein the second fastening hook is formed to be bent downwards from opposite ends of the first fastening hook so as to be opened toward the inner side, and

wherein the third fastening hook is bent downwards from the second fastening hook to be opened toward the outside.