KR20220109136A - Coupler for connectiing strucrure members and structure connectiing method using the same - Google Patents

Abstract

Disclosed are a coupler for structure connection, capable of enabling connection rebars of a structure such as a concrete member, which are separated from each other, to be simply connected with each other through an expansion nut member, while simply adjusting and connecting the connection rebars even when connection axial lines thereof are not aligned with each other, and a structure connection method using the same. The coupler for structure connection includes: a first connection rebar having an end coupled with a first expansion head nut coupled and fixed to the inner surface of the coupler body; a second connection rebar having an end coupled with a second expansion head nut inserted into the coupler body to be set to be adjacent to the first expansion head nut; and a pressing coupling socket coupled and fixed to the inner surface of the coupler body such that the second expansion head nut can be pressed onto the first expansion head nut.

Description

Coupler for structure connection and structure connection method using the same

The present invention relates to a coupler for connecting structures. More specifically, a structure connecting coupler and a structure using the same that can be easily connected to the connecting reinforcing bars of a structure such as a concrete member separated from each other by using an extension nut member, but can be easily adjusted and connected even if the connecting axes do not coincide with each other It's about how to connect.

Figure 1a shows a construction example of a conventional sleeve-embedded reinforcing bar joint device.

That is, in order to construct the beam member 20 and the bottom plate 60 on the upper surface of the column structure 10, and to additionally connect the column structure 10 to the upper surface of the floor plate 60,

The inner reinforcing bar 21 is fastened to the lower part so that the upper surface is exposed on the bottom plate 60 and the fixed sleeve 51 is embedded and installed,

After the connecting reinforcing bar 30 is inserted into the sleeve 51, it can be seen that the inside of the sleeve 51 is filled with filler to finish.

Accordingly, it can be seen that the connecting reinforcing bar 30 inserted into the sleeve to connect the precast column structure 10 up and down can be connected to each other using the filler 54 .

Figure 1b shows a construction example of a conventional coupler-type reinforcing bar joint device.

That is, when the number of reinforcing bars increases, the process of filling each sleeve with a filler becomes complicated and quality control is not easy for the connection between the connecting rebar and the inner reinforcing bar according to curing by embedding the sleeve and filling the filler (G) as shown in FIG. 1A. won't

This is a method of connecting the internal rebar and the connecting reinforcing bar to each other using a screw fastening method using a coupler without using a filler.

Accordingly, according to FIG. 1B, the connecting reinforcing bars 11 and 18 are precast concrete members to be connected to each other and are extended from the inside to the outside in advance.

Accordingly, it can be seen that the coupler 15 is a cylindrical member, and only the upper inner surface has a threaded portion 12, and has an inner peripheral surface on which an intermediate step 16 is formed.

Accordingly, the lower connecting reinforcing bar 18 passes through the lower T-shaped connectors 32 and 34, and the lower T-shaped connectors 32 and 34 are simply inserted so as to be hung on the intermediate step 16 inside the coupler 15. It can be seen that this is being done.

Next, the upper connecting reinforcing bar 11 passes through the upper T-shaped connectors 24 and 26, and the upper T-shaped connectors 24 and 26 are also hung on the intermediate step 16 inside the coupler 15. It can be seen that the simple insertion is made.

Accordingly, the lower T-type connectors 32 and 34 and the upper T-type connectors 24 and 26 have the intermediate step 16 in a simple insertion method inside the coupler 15 so that the flanges 34 and 26 face each other up and down. It can be seen that the internal reinforcing bar 18 and the connecting reinforcing bar 11 that are hung on and fastened to each are not pulled out.

At this time, the upper T-shaped sleeve 46 is inserted and fastened between the outer peripheral surface of the body 26 of the upper T-shaped connector and the threaded portion 12 formed on the upper inner surface of the coupler 15, so that the upper T-shaped sleeve 46 is It can be seen that the lower end serves as the intermediate step 16 while pressing the lower T-shaped connectors 32 and 34 and the upper T-shaped connectors 24 and 26 with each other.

Republic of Korea Patent No. 10-1451167 (Title of the invention: hollow precast reinforced concrete assembly and bonding method thereof, publication date: October 15, 2014) Republic of Korea Patent Publication No. 10-2011-0096273 (Title of the invention: connector for concrete reinforcing bar, publication date: August 30, 2011) Republic of Korea Patent No. 10-2024341 (Title of the invention: Concrete member connection device and structure connection method using the same, publication date: September 23, 2019)

Accordingly, the present invention is to be connected to each other using a coupler at the connection part of a structure such as a concrete member, but to connect the connecting reinforcing bars in a simple manner using an extension head nut, and to absorb them even if they are slightly shifted from each other on the connecting axis It is a technical task to solve the provision of a structure connection coupler and a structure connection method using the same to secure constructability and expandability.

In order to achieve the above object, the coupler for connecting the structure of the present invention,

A first connecting reinforcing bar having a first extension head nut fastened to the inner surface of the coupler body is fastened to an end thereof; a second connecting reinforcing bar inserted into the coupler body part and having a second extended head nut set to come into contact with the first extended head nut is fastened to an end thereof; and a compression fastening socket fastened to the inner surface of the coupler body so as to compress the second extended head nut to the first extended head nut.

In order to achieve the above object, the structure connection method using the coupler for structure connection of the present invention is,

(a) fastening and fixing the first extension head nut fastened to the inner surface of the coupler body to the end of the first connecting reinforcing bar; (b) fastening and fixing the second extension head nut inserted into the coupler body part at the end of the second connecting reinforcing bar and set to come into contact with the first extension head nut; and (c) fastening and fixing the compression clamping socket to the inner surface of the coupler body so that the second extension head nut can be compressed to the first extension head nut. A socket member in which the flange portion and the socket portion are integrally formed. The flange portion and the socket portion have a central through-hole formed so that the second connecting reinforcing bar can pass through without fastening, and a threaded portion is formed on the outer circumferential surface of the socket portion, so that the coupler It is rotationally fastened to the inner surface of the body, and the flange portion is in contact with the end surface of the coupler body and the rotation is stopped while the second extended head nut fastened to the second connecting reinforcing bar head is in contact with the socket and serves as an anchorage. .

According to the present invention, it is possible to connect the connecting reinforcing bars to each other using the extension head nut serving as a fixture inside the coupler for structure connection, so that the connection work can be made easily and quickly, and a structure connection method using the coupler This becomes possible.

In addition, according to the present invention, the connecting reinforcing bars to be connected can be connected to each other even if they are not located on the same axis, so that the construction error of the structure can be overcome.

Figure 1a is a construction example of a conventional sleeve-embedded reinforcing bar joint device,
Figure 1b is a construction example of a conventional coupler-type reinforcing bar joint device,
Figures 2a and 2b is an exemplary view of the structure connection using the coupler for connecting the structure of the present invention,
3a, 3b, 3c and 3d are flowcharts of a structure connection method using the coupler for structure connection of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement them. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

[ Coupler 100 for structure connection of the present invention ]

Figures 2a and 2b shows an exemplary view of the connection of the structure 200 using the coupler 100 for connecting the structure of the present invention.

The coupler 100 for connecting the structure is a coupler for connecting the first and second connecting reinforcing bars 210 and 220 drawn out from the structure 200 to each other, as shown in FIGS. 2A and 2B .

That is, the first and second extension head nuts 110 and 120 are fastened to the ends of the first and second connecting reinforcing bars 210 and 220 .

The first extension head nut 110 fastened to the first connecting reinforcing bar 210 is fastened to one end inside the coupler body 130,

The second extended head nut 120 fastened to the second connecting reinforcing bar 220 is inserted into the coupler body 130 and set to come into contact with the first extended head nut 110,

While pressing the second extended head nut 120 to the first extended head nut 110 using the compression clamping socket 140 , the compression clamping socket 140 is fastened to the inner surface of the coupler body 130 .

At this time, the compression fastening socket 140 is a T-shaped socket such that the central through-hole 143 is formed so that the second connecting reinforcing bar 220 passes through, and the central through-hole 143 is the second connecting reinforcing bar 220 through. It is possible to effectively secure the connection performance by forming a diameter sufficient to absorb it even if it is not positioned slightly off the same central axis as the first connecting reinforcing bar 210 .

In this case, the structure 200 may be a column structure, a floor plate, a deck, etc. which are pre-fabricated based on the precast concrete member and brought into the field.

Accordingly, the coupler 100 for connecting the structure is, as shown in FIGS. 2a and 2b, a first extension head nut 110, a second extension head nut 120, a coupler body 130, and a compression fastening socket 140. It can be seen that it is composed of

First, the first expansion head nut 110 is fastened to the screw formed on the outer peripheral surface of the end of the first connecting reinforcing bar 210 extending from one side of the concrete member 200a as the structure 200, as shown in FIGS. 2A and 2B. It is a nut type member.

As a cylindrical nut member having a certain thickness, threaded portions are formed on the inner and outer peripheral surfaces, respectively, so that the coupler body 130 is rotated and fastened to the inner surface using the threaded portion of the outer peripheral surface, and the first connecting reinforcing bar 210 using the threaded portion of the inner peripheral surface ) to be rotated at the end of the

As such, since the first extension head nut 110 is rotationally fastened to the head of the first connecting reinforcing bar 210 and fixed, it serves as a fixture inside the coupler body 130 and facilitates fastening, and the first connecting reinforcing bar 210 . It is used by forming a threaded part on the head of

In this case, when using a first extension head nut 110 having the same diameter as that of the second extension head nut 120, the diameter of the first extension head nut 110 for adjusting the connecting axis is formed large. As a method, referring to FIG. 2b , a method of fastening the additional extension head nut 112 to the extension head nut 111 having the same diameter as the second extension head nut 120 may be used.

Accordingly, the additional extension head nut 112 has an inner surface threaded portion fastened to the screw portion formed on the outer peripheral surface of the extension head nut 111, a bottom groove threaded portion is formed to form a threaded portion on the outer peripheral surface, and a top surface formed to be closed. .

Next, the second extension head nut 120 is a nut fastened to the screw formed on the outer circumferential surface of the second connecting reinforcing bar 220 extending from the other side concrete member 200b as the structure 200 as shown in FIGS. 2A and 2B . The shape member is the same as that of the first expansion head nut 110 .

The difference is that as a cylindrical nut member having a certain thickness, each thread is formed only on the inner circumferential surface, and the diameter is smaller than that of the first extended head nut 110, so that the outer circumferential surface is set apart from the inner side of the coupler body 130, and the threaded portion of the inner circumferential surface is to be rotationally fastened to the end of the second connecting reinforcing bar 220 using the .

Also, like the first extension head nut 110, it is rotationally fastened to the head of the second connecting reinforcing bar 220 and fixed, so that it is easy to fasten while serving as a fixture inside the coupler body 130, and the second connecting reinforcing bar 220 ) is used by forming a threaded part on the head.

Accordingly, the second extended head nut 120 fastened to the head of the second connecting reinforcing bar 220 is fastened to the head of the first connecting reinforcing bar 210 , and the first extended head nut fastened to the inner surface of the coupler body 130 . When set in contact with 110, the first and second connecting reinforcing bars 210 and 220 can be set on the same connecting axis or close to each other.

At this time, since the second extended head nut 120 is not fastened to the inner surface of the coupler body 130 by a screw part, it is in direct contact with the first extended head nut 110 fastened to the inside of the coupler body 130 . It is set and pressed while maintaining the set state, which uses the compression fastening socket 140 to be described later.

In addition, the diameter of the first extension head nut 110 is smaller than that of the coupler body 130 and the outer circumferential surface is set to be spaced apart from the inner surface, so that the second connecting reinforcing bars 220 to the first connecting reinforcing bars 210 are the same as possible. It is possible to set the second extension head nut 120 so as to be located on the connecting axis.

Next, the coupler body 130 includes a cylindrical member for accommodating the first extended head nut 110, the second extended head nut 120, and the compression fastening socket 140 inside, as shown in FIGS. 2A and 2B. do.

That is, since threaded portions are formed on the inner surfaces of both end surfaces except for the middle portion, the first extension head nut 110 and the compression fastening socket 140 are respectively fastened to the inner surfaces. It can be seen that the second extension head nut 120 is located in the middle part.

That is, it can be seen that the second extension head nut 120 is set so that the outer peripheral surface is spaced apart from the inner surface of the coupler body 130 .

As shown in FIGS. 2A and 2B , the compression clamping socket 140 is a socket member in which a flange part 141 and a socket part 142 are integrally formed, and a second extension head nut fastened to the head of the second connecting reinforcing bar 220 . It is a socket member fastened and fixed to the inner surface of the coupler body 130 so that the second extended head nut 120 maintains this compression state while pressing the 120 toward the first extended head nut 110 .

Accordingly, a central through hole 143 is formed in the flange portion 141 and the socket portion 142 so that the second connecting reinforcing bar 220 can pass through without fastening.

At this time, the outer circumferential surface of the socket portion 142 has a screw portion formed therein so that it is rotationally fastened to the inner surface of the coupler body 130, and the flange portion 141 is in contact with the end surface of the coupler body 130 and the rotation is stopped while the rotation is stopped. 2 The second extension head nut 120 fastened to the head of the connecting reinforcing bar 220 serves as an anchorage while in contact with the socket part 142 .

Furthermore, it may be difficult to arrange the first connecting reinforcing bar 210 and the second connecting reinforcing bar 220 on the same connecting axis while the central through hole 143 allows the second connecting reinforcing bar 220 to be inserted. This may occur when the structures 200: 200a, 200b are manufactured in a precast method and connected to each other in the field.

Accordingly, the difference based on the position on the same connecting axis is to allow absorption in a range in which the diameter of the central through hole 143 is smaller than the diameter of the second expansion head nut 120 .

Accordingly, even if the first and second connecting reinforcing bars 210 and 220 are slightly shifted from each other on the connecting axis, they can be absorbed, thereby securing workability and expandability.

[ Structure connection method using coupler 100 for structure connection ]

3a, 3b, 3c and 3d show a flowchart of a structure connection method using the coupler 100 for structure connection of the present invention.

The structure connection method using the structure connection coupler 100 is a structure connection coupler 100, the first extended head nut 110, the second extended head nut 120, the coupler body 130, the compression socket 140 is included, so each is provided, and the first and second connecting reinforcing bars 210 and 220 are connected to each other, and the structure 200 includes a precast concrete structure.

Accordingly, as shown in FIG. 3A , the first extension head nut 110 is fastened to the screw portion formed in the head of the first connecting reinforcing bar 210 .

Accordingly, the first extension head nut 110 fastened to the head of the first connecting reinforcing bar 210 is installed to be rotationally fastened to the inner surface of the coupler body 130 .

That is, since the first extended head nut 110 is in a fastened state, the screw portion formed on the outer circumferential surface of the first extended head nut 110 is rotated and fixed to the inner surface of the coupler body 130 .

As a result, when the entire first extension head nut 110 is accommodated inside the coupler body 130 , the first extension head nut 110 can sufficiently serve as a fixing device.

Next, the second extension head nut 120 is fastened to the head of the second connecting reinforcing bar 220 to be connected as shown in FIG. 3B .

At this time, the second extension head nut 120 may be accommodated in the coupler body 130 because the screw portion is not formed on the outer circumferential surface, and eventually the second connecting reinforcing bar 220 is connected to the first connecting reinforcing bar 210 and each other. It serves to set in a position to be in contact with, and has a function of connecting the first and second connecting reinforcing bars 210 and 220 to each other even when there is a slight difference without being located on the same connecting axis. .

Next, as shown in FIG. 3c, the second extension head nut 120 fastened to the head of the second connecting reinforcing bar 220 is fastened and fixed to the first extended head nut 110 fastened to the first connecting reinforcing bar 210. It is inserted into the coupler body 130 to set the second connecting reinforcing bar 220 to a position such that the first connecting reinforcing bar 210 and the first connecting reinforcing bar 210 are in contact with each other.

To this end, before fastening and fixing the second extension head nut 120 to the second connecting reinforcing bar 220, first, the second connecting reinforcing bar 220 is inserted so that the crimping fastening socket 140 is inserted into the coupler body 130 ) so that the socket part 142 is rotatably fastened to the first extension head nut 110 while pressing the second extension head nut 120 to serve as an anchorage of the second extension head nut 120, and the flange part ( 141) is made all in the process of coming into contact with the cut surface of the coupler body 130.

As such, as shown in FIG. 3D , the first and second connecting reinforcing bars 210 and 220 are connected to each other by the coupler 100 for connecting the structure, and the connected portion is located at the connecting portion of the structure.

The above description of the present invention is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and likewise components described as distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be interpreted as being included in the scope of the present invention. do.

100: coupler for structure connection
110: first extension head nut
111: extended head nut 112: additional extended head nut
120: second extension head nut 130: coupler body part
140: crimp fastening socket 141: flange portion
142: socket portion 143: center through hole
200: structures 200a, 200b: concrete member
210: first connecting reinforcing bar 220: second connecting reinforcing bar

Claims (10)

A first connecting reinforcing bar 210 having a first extended head nut 110 fastened to the inner surface of the coupler body 130 and fastened to an end thereof; and a second connecting reinforcing bar 220 inserted into the coupler body 130 and having a second extended head nut 120 set to come into contact with the first extended head nut 110 is fastened to an end thereof;
A coupler for structure connection comprising a; the second extended head nut 120 is pressed to the first extended head nut 110, the coupler body 130 is fastened to the inner surface of the crimping fastening socket 140 to be fixed. According to claim 1,
The coupler body 130,
A screw portion is formed on the inner side of both end surfaces except for the middle portion, so that the first extension head nut 110 and the compression fastening socket 140 are respectively fastened to the inner surface,
A coupler for structure connection, including a cylindrical coupler such that the second extended head nut 120 is positioned in the middle portion, and the second extended head nut 120 is set so that the outer circumferential surface is spaced apart from the inner surface. According to claim 1,
The first extension head nut 110,
Screw parts are formed on the inner peripheral surface and the outer peripheral surface, respectively, and rotationally fastened to the inner surface of the coupler body 130 using the threaded part of the outer peripheral surface, and rotationally fastened to the end of the first connecting reinforcing bar 210 using the threaded part of the inner peripheral surface It includes a cylindrical nut member,
A coupler for connecting a structure in which the first extension head nut 110 is rotationally fastened to the head in which the threaded portion of the first connecting reinforcing bar 210 is formed and fixed to serve as an anchorage inside the coupler body 130 . According to claim 1,
The second extension head nut 120,
Threads are formed only on the inner circumferential surface, respectively, and the diameter is smaller than that of the first extended head nut 110, so that the outer circumferential surface is spaced apart from the inner side of the coupler body 130, and the second connecting reinforcing bar 220 using the screw of the inner circumferential surface. It includes a cylindrical nut member that is rotationally fastened to the end of the threaded portion is formed,
A coupler for connecting a structure that is rotationally fastened to the head of the second connecting reinforcing bar 220 and is fixed to serve as an anchor in the coupler body 130 . 3. The method of claim 2,
The second extension head nut 120,
The coupler body 130 is not fastened to the threaded portion of the inner surface, so it is set so as to be in direct contact with the first extended head nut 110 fastened to the inside of the coupler body 130, and is compressed so as to be compressed while maintaining the set state. It is fixed inside the coupler body 130 using the socket 140,
The diameter is smaller than that of the first extension head nut 110 so that the second extension head nut 120 can be set so that the second connecting reinforcing bars 220 to the first connecting reinforcing bars 210 are located on the same connecting axis as possible with each other. coupler for connecting structures. 6. The method of claim 5,
The compression fastening socket 140,
The coupler body part ( 130) A coupler for structure connection, which is a socket member fastened to the inner surface. 7. The method of claim 6,
The compression fastening socket 140,
As a socket member in which the flange portion 141 and the socket portion 142 are integrally formed, the flange portion 141 and the socket portion 142 have a central through hole 143 formed therein, so that the second connecting reinforcing bar 220 is fastened. It is formed so that it can penetrate without
A screw portion is formed on the outer circumferential surface of the socket portion 142 and is rotationally fastened to the inner surface of the coupler body portion 130,
The flange portion 141 is in contact with the end surface of the coupler body 130 while the rotation is stopped while the second extension head nut 120 fastened to the head of the second connecting reinforcing bar 220 is in contact with the socket portion 142. A coupler for structure connection, which is a socket member that acts as an anchorage while doing so. 8. The method of claim 7,
The central through-hole 143 allows the second connecting reinforcing bar 220 to be inserted,
The diameter of the central through-hole 143 can be absorbed in a range smaller than the diameter of the second expansion head nut 120, so that even if the first and second connecting reinforcing bars 210 and 220 are slightly shifted from each other on the connecting axis, it can be absorbed. A coupler for connecting structures, which is a socket member that allows (a) fastening and fixing the first extension head nut 110 fastened to the inner surface of the coupler body 130 to the end of the first connecting reinforcing bar 210;
(b) fastening the second extension head nut 120 inserted into the coupler body 130 at the end of the second connecting reinforcing bar 220 and set to come into contact with the first extension head nut 110; and
(c) fastening and fixing the compression fastening socket 140 to the inner surface of the coupler body 130 so that the second extended head nut 120 can be compressed to the first extended head nut 110; and ,
The compression-fastening socket 140 of step (c) is a socket member in which the flange part 141 and the socket part 142 are integrally formed, and the flange part 141 and the socket part 142 have a center through hole 143. This is formed so that the second connecting reinforcing bar 220 can penetrate without fastening,
A screw portion is formed on the outer peripheral surface of the socket portion 142 to be rotationally fastened to the inner surface of the coupler body portion 130, and the flange portion 141 is in contact with the end surface of the coupler body portion 130 while the rotational fastening is stopped. A method of connecting a structure using a coupler for connecting a structure in which the second extension head nut 120 fastened to the head of the second connecting reinforcing bar 220 serves as an anchorage while in contact with the socket portion 142 . 10. The method of claim 9,
The second extension head nut 120 of step (b) is,
It is not fastened to the screw part on the inner surface of the coupler body 130, and is set so as to be in direct contact with the first extension head nut 110 fastened to the inside of the coupler body 130, and is compressed while maintaining the set state. It is fixed inside the coupler body 130 using the compression clamping socket 140, and the diameter of the first extension head nut 110 is smaller than that of the first connecting reinforcing bar 210, and the second connecting reinforcing bar 220 is possible with each other. To set the second extension head nut 120 to be located on the same connecting axis,
The central through-hole 143 allows the second connecting reinforcing bar 220 to be inserted, and the diameter of the central through-hole 143 is absorbed in a range smaller than the diameter of the second expansion head nut 120 . , A structure connection method using a structure connection coupler to absorb the first and second connecting reinforcing bars 210 and 220 even if they are slightly shifted from each other on the connection axis.

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