KR102278625B1 - Apparatus combining rebars of pc member - Google Patents

Abstract

A device for combining reinforcing bars of a PC member of the present invention is a device for combining reinforcing bars of a PC member, which combines reinforcing bars of a first PC member and a second PC member to connect the two PC members vertically or horizontally, wherein the device comprises: a main body embedded at the lower end of the first PC member in a state of being fastened to the reinforcing bar of the first PC member; a strut body fastened to the upper end of the reinforcing bar of the second PC member to support the main body; a fit body fastened to the lower inner circumferential surface of the main body to support the strut body; and a convolution body inserted in the fit body to rotate the strut body and adjust the height of the strut body.

Description

Rebar coupling device for PC members {APPARATUS COMBINING REBARS OF PC MEMBER}

The present invention relates to a reinforcing bar coupling device for a PC member, and more particularly, in connecting two PC members up and down or left and right, it is possible to continuously construct the PC members without the need for initial wet curing, and to secure a lot of clearance. It relates to a reinforcing bar coupling device for PC members that can improve workability and at the same time prevent slip deformation due to such play.

The construction method of reinforced concrete structure can be divided into two main types.

The first is the Reinforced Concrete (RC) method, in which reinforcing bars are placed at the site, installed while moving the formwork, and concrete is poured with ready-mixed concrete.

Second, the main part of the structure is divided into sizes that can be transported, and reinforcing and pouring reinforcing bars are precast at the factory and manufactured, and at the site, the broken reinforcing bars are seam treated and then the joint pouring or topping is poured to construct the precast. There is a concrete (PC: Precast Concrete) method.

The PC method inevitably creates joints due to transport and equipment restrictions, and joints requiring tensile force must be joined by welding, overlapping joints, or using various mechanical devices.

In the conventional technology for mechanical jointing of reinforcing bars, it is common to use a pipe called a splice sleeve to inject high-strength non-shrinkable mortar inside and harden the connection method. Sometimes it is.

However, in the case of wet injection, it is very dangerous because it is difficult to stand on its own before hardening and there is a possibility of overturning, and it requires a curing period of at least 2-3 days, and the air can be very long, especially in winter.

In addition, the conventional dry coupler method or welding method is not only difficult to check and guarantee in terms of quality, but also causes many practical errors such as production errors and construction errors. extremely limited

And, in the case of a conventional mechanical joint device, if a large amount of clearance is secured to improve such difficult workability, slip deformation increases during shearing or tensioning, which causes large cracks and makes it difficult to secure the safety of the structure.

Registered Patent Publication No. 10-0684149

The present invention can continuously construct PC members without the need for initial wet curing when connecting two PC members up and down or left and right in construction, and secure a lot of play to improve workability and, at the same time, inject mortar later to reduce the gap. An object of the present invention is to provide a reinforcing bar coupling device of a PC member that can prevent slip deformation.

The reinforcing bar coupling device of the PC member of the present invention for achieving the above object is a reinforcing bar coupling device of a PC member that connects the two PC members up and down or left and right by combining the reinforcing bars of the first PC member and the reinforcing bars of the second PC member. , a body embedded in the lower end of the first PC member in a state of being fastened to the reinforcing bar of the first PC member; a support body fastened to the upper end of the reinforcing bar of the second PC member to support the main body; a fitting body fastened to the lower inner circumferential surface of the main body to support the support body; and a turning body inserted into the fitting body to rotate the support body to adjust the height of the support body.

The main body has an upper portion having an upper hole in which a screw portion is formed on an inner circumferential surface, a middle portion connected to the lower end of the upper portion, the upper hole extending therein, and an outer diameter gradually increasing downward, and connected to the lower end of the middle portion and may include a lower portion having a lower hole formed with a threaded portion on the inner circumferential surface.

The upper portion may further include a plurality of ribs protruding from the outer circumferential surface and embedded in the concrete of the first PC member.

The intermediate portion may further include an injection hole formed through the side wall and connected to the injection tube communicating with the outer surface of the first PC member.

The lower part may be formed so that its outer diameter gradually increases toward the lower end so that it can be easily removed from the mold during casting.

The inner diameter of the lower hole may be formed to be larger than the inner diameter of the upper hole to form a stepped portion at the upper end of the lower hole, and the stepped portion may include a plurality of injection grooves formed to communicate with the lower end of the upper hole.

The holding body may include an inner circumferential screw portion fastened to the upper end of the reinforcing bar of the second PC member, and an outer circumferential surface having an outer diameter smaller than the inner diameter of the lower hole.

The support body may further include a plurality of injection grooves formed on the lower surface of the side wall to communicate the space below and outside the support body.

The fitting body has an outer circumferential screw portion fastened to the lower inner circumferential threaded portion of the main body, a lower prismatic portion formed at a lower end of the outer circumferential screw portion larger than the outer circumferential screw portion, and an inner diameter greater than the reinforcing bar outer diameter of the second PC member. Halls may be included.

The turning body is formed to be smaller than the inner hole of the fitting body and has an outer periphery prismatic part inserted into the inner hole, an inner hole having an inner diameter larger than the outer diameter of the reinforcing bar of the second PC member, and protruding at the upper end, It may include a plurality of projections engaged with the injection groove of the support body to rotate the support body.

The rotating body is separated into two semi-circular tubes cut in a plane passing through the center of the circular tube, and the two semi-circular tubes are coupled by a coupling band surrounding the lower portion of the outer circumferential surface of the rotating body, and the separation and coupling of the two semi-circular tubes The surface may be formed in a shape in which the mountain of one semi-circular tube and the valley of the other semi-circular tube contact each other.

The rotating body is separated into two semi-circular tubes cut in a plane passing through the center of the circular tube, and the two semi-circular tubes are coupled by a coupling band surrounding the lower portion of the outer circumferential surface of the rotating body, and the separation and coupling of the two semi-circular tubes The surface may be formed as an inclined surface inclined at a predetermined angle with respect to the radial direction.

The first PC member and the second PC member have a rectangular parallelepiped column or wall shape, and the reinforcing bars of the first PC member and the reinforcing bars of the second PC member are disposed adjacent to the sides of a rectangle and formed by a splice sleeve. It may include a first reinforcing bar to be coupled, and a second reinforcing bar disposed adjacent to the vertex of the rectangle and coupled by the reinforcing bar coupling device.

The first PC member and the second PC member have a rectangular parallelepiped column or wall shape, and the reinforcing bars of the first PC member and the reinforcing bars of the second PC member are disposed adjacent to sides and vertices of a rectangle, and a splice sleeve It may include a first reinforcing bar coupled by, and a second reinforcing bar disposed adjacent to the side of the rectangle and coupled by the reinforcing bar coupling device.

The first PC member and the second PC member may have a rectangular wall shape, and the reinforcing bars of the first PC member and the reinforcing bars of the second PC member may be horizontally disposed on the ground.
The outer circumferential surface of the holding body is formed such that its outer diameter gradually increases from the upper end to the lower end, and the outer diameter of the fitting body may be formed to be larger than the maximum outer diameter of the holding body.

According to the reinforcing bar coupling device of the PC member of the present invention, the PC members can be continuously constructed without the need for initial wet curing in the construction by connecting the two PC members up and down or left and right, and the workability is improved by securing a lot of clearance At the same time, it is possible to prevent slip deformation due to such play by injecting mortar later.

In addition, by using the rebar coupling device of the present invention and the splice sleeve together for construction, the rebar coupling device can prevent the PC member from being separated and overturned even before the curing of the sleeve is completed, and the non-shrinkable mortar can be injected later. When the reinforcing bar coupling device of the present invention is also injected at the same time and by curing the injected mortar, the PC member can be combined more simply and firmly.

1 is a partial longitudinal cross-sectional view showing a structure for coupling two PC members using a reinforcing bar coupling device and a sleeve of a PC member according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line AA of FIG. 1 .
Figure 3 is a partial longitudinal cross-sectional view showing an enlarged portion of the connection of two PC members using one reinforcing bar coupling device and one sleeve in Figure 1;
Figure 4 is an exploded perspective view showing the reinforcing bar coupling device of the PC member according to an embodiment of the present invention.
5 is an assembled perspective view showing a partial cutaway of the reinforcing bar coupling device of the PC member according to an embodiment of the present invention.
Figure 6 is an exploded longitudinal cross-sectional view showing the reinforcing bar coupling device of the PC member according to an embodiment of the present invention.
7 is a view showing a detachable rotating body and a coupling band.
8 is a partial longitudinal cross-sectional view illustrating a process of combining the reinforcing bars of the first PC member and the reinforcing bars of the second PC member using the reinforcing bar coupling device of the PC member according to an embodiment of the present invention.
9 is a partial longitudinal cross-sectional view showing the injection of non-shrinkage mortar into the reinforcing bar coupling device of the assembled PC member.
10 is a partial longitudinal cross-sectional view showing that the reinforcing bar coupling device is coupled to the upper end of the second PC member as opposed to FIG.
11 is a horizontal cross-sectional view showing a structure for coupling two PC members in the form of a rectangular column using the reinforcing bar coupling device of the PC member of the present invention.
12 is a horizontal cross-sectional view illustrating a modified example in which the reinforcing bar coupling device is disposed inside the upper and lower sides of the rectangle in FIG. 11 .
13 is a horizontal cross-sectional view illustrating a modified example in which the reinforcing bar coupling device is disposed inside the four sides of the square in FIG. 11 .
14 is a horizontal cross-sectional view and a longitudinal cross-sectional view showing an embodiment of combining two PC walls up and down using the reinforcing bar coupling device of the PC member of the present invention.
15 is a horizontal cross-sectional view and a longitudinal cross-sectional view showing a modified example in which the reinforcing bar coupling device is disposed in the middle of the PC wall in FIG. 14 .
Figure 16 is a side cross-sectional view and a longitudinal cross-sectional view showing an embodiment of connecting two PC walls left and right using the reinforcing bar coupling device of the PC member of the present invention.
17 is a side cross-sectional view and a longitudinal cross-sectional view showing a modified example in which the reinforcing bar coupling device is disposed in the middle of the PC wall in FIG.
18 is a horizontal cross-sectional view and a longitudinal cross-sectional view showing an embodiment in which two PC walls in which the reinforcing bars are arranged in two rows are vertically coupled using the reinforcing bar coupling device and the sleeve of the PC member of the present invention.
19 is a horizontal cross-sectional view and a longitudinal cross-sectional view showing a modified example in which the reinforcing bar coupling devices are arranged in the middle of the PC wall in FIG. 18 .
20 is a horizontal cross-sectional view and a longitudinal cross-sectional view showing a modified example in which the reinforcing bar coupling device is arranged two at both ends of the PC wall in FIG. 14 .
21 is a horizontal cross-sectional view and a longitudinal cross-sectional view showing a modified example in which the reinforcing bar coupling devices are arranged in the middle of the PC wall in FIG.

Since the present invention can apply various transformations and can have various embodiments, specific embodiments are illustrated and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

The terms used in the present invention are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present invention, terms such as 'comprising' or 'having' are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this case, it should be noted that in the accompanying drawings, the same components are denoted by the same reference numerals as much as possible. In addition, detailed descriptions of well-known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some components are exaggerated, omitted, or schematically illustrated in the accompanying drawings.

1 is a partial longitudinal cross-sectional view showing a structure for coupling two PC members using a reinforcing bar coupling device and a sleeve of a PC member according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 3 is a partial longitudinal cross-sectional view showing an enlarged portion of the joint of two PC members using one rebar coupling device and one sleeve in FIG. 1, and FIG. 4 is a reinforcing bar coupling of a PC member according to an embodiment of the present invention. It is an exploded perspective view showing the device, Figure 5 is an assembled perspective view showing a part of the reinforcing bar coupling device of the PC member according to an embodiment of the present invention, Figure 6 is a PC member reinforcing bar coupling device according to an embodiment of the present invention is an exploded longitudinal cross-sectional view showing

The reinforcing bar coupling device of the PC (precast concrete) column of the present invention combines the reinforcing bars of the first PC member 100 and the reinforcing bars of the second PC member 200 to connect the two PC members vertically or horizontally. As the reinforcing bar coupling device 1000 , it includes a main body 1100 , a support body 1200 , a fitting body 1300 , and a turning body 1400 .

As shown in FIG. 1 , the first PC member 100 and the second PC member 200 have a rectangular pillar shape in appearance, and reinforcing bars may be embedded in the interior in the vertical direction, that is, in the longitudinal direction of the pillar. Also, as shown in FIG. 2 , the first PC member 100 and the second PC member 200 may have a square shape in a horizontal cross section, but may also be formed in a rectangular shape.

The PC member to which the reinforcing bar coupling device of the present invention is applied may include a PC column, a PC wall, a PC beam, a PC girder, a PC beam, and the like. In the interior of the PC column and PC wall, reinforcing bars are arranged perpendicular to the ground, that is, in the direction of gravity, and in the interior of the PC wall, PC beam, PC girder, and PC beam, reinforcing bars can be arranged horizontally, that is, parallel to the ground. . When the reinforcing bar inside the PC member is vertically arranged, the reinforcing bar coupling device of the present invention can combine the PC members in the vertical direction, and when the reinforcing bars inside the PC member are arranged horizontally, the reinforcing bar coupling device of the present invention connects the PC members in the left and right directions can be combined with For example, FIG. 2 shows that the PC member is a PC column, and FIG. 14 to be described later shows that the PC member is a PC wall.

The upper ends of the reinforcing bars 210 and 220 of the second PC member 200 may extend upward from the upper surface of the second PC member 200 to constitute the extruded reinforcing bars. The reinforcing bars 210 and 220 of the second PC member 200 may include a first reinforcing bar 210 disposed inside a side of the rectangle and a second reinforcing bar 220 disposed inside a vertex of the rectangle. At the upper end of the second PC member 200 , a portion in contact with the vertex of the rectangle may be cut in steps to form a work space 240 .

The reinforcing bars 110 and 120 of the first PC member 100 may also include the first reinforcing bars 110 disposed inside the sides of the rectangle and the second reinforcing bars 120 disposed inside the vertices of the rectangle. The lower ends of the reinforcing bars 110 and 120 of the first PC member 100 do not protrude downward from the lower surface of the first PC member 100, but rather the lower ends of the reinforcing bars 110 and 120 of the first PC member 100. It may be disposed above a predetermined height than the lower surface of the .

The lower end of the first reinforcing bar 110 of the first PC member 100 is coupled to a splice sleeve 300 embedded in the lower end of the first PC member 100 , and the second reinforcing bar 120 of The lower end may be coupled to the reinforcing bar coupling device 1000 embedded in the lower end of the first PC member 100 . The upper extruded reinforcing bar of the first reinforcing bar 210 of the second PC member 200 may be coupled to the splice sleeve 300 , and the upper extruded reinforcing bar of the second reinforcing bar 220 may be coupled to the reinforcing bar coupling device 1000 . have.

The splice sleeve 300 connects the two PC members by inserting the ends of the upper and lower two reinforcing bars inside the upper and lower parts and injecting high-strength non-shrinkable mortar through the injection holes formed on the upper and lower sides for curing. can be combined Splice sleeve 300 can be firmly coupled to the two reinforcing bars when curing is completed.

As shown in FIG. 2 , the two injection holes of the splice sleeve 300 may be connected to the two injection tubes 220 embedded to communicate with the outer surface of the first PC member 100 . So, it is possible to insert the two reinforcing bars into the splice sleeve 300 and then inject the non-shrinkable mortar through the two injection tubes 220 .

As shown in FIG. 1 , the top height of the first reinforcing bar 210 of the second PC member 200 and the second reinforcing bar 220 disposed in the work space 240 may be different from each other. That is, the upper end of the first reinforcing bar 210 may be disposed higher than the upper end of the second reinforcing bar 220 . Accordingly, the lower end of the first reinforcing bar 110 of the first PC member 100 may be disposed higher than the lower end of the second reinforcing bar 120 .

Threaded portions may be formed at upper ends and lower ends of the second reinforcing bars 120 of the first PC member 100 and the second reinforcing bars 220 of the second PC member 200 , respectively.

The body 1100 may be embedded in the lower end of the first PC member 100 while being fastened to the reinforcing bar 120 of the first PC member 100 . The main body 1100 has a circular tube shape of which the diameter changes as a whole, and a hole into which the second reinforcing bar 120 and the second reinforcing bar 220 are inserted is formed to communicate in the longitudinal direction. Screw portions may be formed on the upper and lower inner peripheral surfaces of the inner hole of the body 1100 , respectively.

The holding body 1200 may be fastened to the upper end of the reinforcing bar 220 of the second PC member 200 to support the main body 1100 . The holding body 1200 also has a circular tube shape as a whole, and a threaded portion fastened with the second reinforcing bar 220 may be formed therein.

The fitting body 1300 may be fastened to the lower inner circumferential surface of the body 1100 to support the support body 1200 . The fitting body 1300 also has a circular tube shape as a whole, and a threaded portion fastened to the inner circumferential surface of the main body 1100 may be formed on the outer circumferential surface.

The turning body 1400 may be inserted into the fitting body 1300 to rotate the holding body 1200 to adjust the height of the holding body 1200 . The turning body 1400 is formed in the form of a circular tube having an outer diameter smaller than the inner diameter of the fitting body 1300 , and a plurality of protrusions may be formed on the upper end to rotate the holding body 1200 . As will be described later, the turn body 1400 is a tool that can be temporarily inserted and then separated from the outside of the second reinforcing bar 220 and the inside of the fitting body 1300 to rotate the parts like a wrench. To this end, the turn body 1400 may be configured so that the circular tube can be separated and combined into two semi-circular tubes.

4 to 6, the main body 1100 has an upper portion 1110 having an upper hole 1140 having a threaded portion 1142 formed therein on its inner circumferential surface, and is connected to the lower end of the upper portion and has an upper hole 1140 therein. ) is extended and formed so that the outer diameter gradually increases downward, and a lower portion 1130 connected to the lower end of the middle portion and formed with a lower hole 1150 having a threaded portion 1152 formed on the inner circumferential surface. .

The upper part 1110 of the body 1100 may have an upper hole 1140 formed therein, and a screw part 1142 to which the second reinforcing bar 120 is fastened may be formed on the inner circumferential surface. The upper hole 1140 is formed to have the same inner diameter up to the upper part 1110 and the middle part 1120 of the main body 1100 , and the screw part 1142 may be formed only up to the inner peripheral surface of the upper part 1110 .

The upper portion 1110 may further include a plurality of ribs 1112 protruding from the outer peripheral surface and embedded in the concrete of the first PC member 100 . The plurality of ribs 1112 may be disposed on the outer circumferential surface of the upper portion 1110 in the longitudinal direction, for example, four at intervals of 90 degrees. The plurality of ribs 1112 may prevent the body 1100 from being relatively rotated when the body 1100 is embedded in the concrete of the first PC member 100 .

The middle part 1120 may be connected to the lower end of the upper part 1110 and may be formed such that the outer diameter of the outer circumferential surface gradually increases downward. Since the inner diameter of the intermediate portion 1120 is constant and does not change, the sidewall of the intermediate portion 1120 may be formed such that its thickness gradually increases downward.

The middle portion 1120 may further include an injection hole 1180 that is formed through the sidewall and is connected to the injection tube 1190 (refer to FIG. 8 ) communicating with the outer surface of the first PC member 100 . The injection hole 1180 may be a passage for injecting high-strength non-shrinkable mortar after assembling the reinforcing bar coupling device 1000, and when injecting the non-shrinkable mortar from the lower portion of the rebar coupling device 1000, a part of the mortar and the mortar It can be a passage to exhaust the generated air. Four injection holes 1180 may be formed on the sidewall of the intermediate part 1120 at intervals of 90 degrees. Since the reinforcing bar coupling device 1000 is disposed inside the vertex of the first PC member 100 and the injection tube 1190 is disposed on the two outer surfaces of the first PC member 100, respectively, of the four injection holes 1180 Two may be connected to the injection tube (1190).

The lower portion 1130 is integrally connected downward from the lower end of the middle portion 1120 , and a lower hole 1150 may be formed therein. A screw portion 1152 is formed on the inner circumferential surface of the lower hole 1150 so that the fitting body 1300 can be fastened thereto. The screw part 1152 may be formed only under the inner circumferential surface of the lower hole 1150 . The height of the portion where the screw portion 1152 is not formed on the inner circumferential surface of the lower hole 1150 may be formed to be smaller than the height of the support body 1200 .

The lower part 1130 is tapered so that its outer diameter gradually increases toward the lower end, so that it can be easily removed from the mold during casting. In addition, when the lower portion 1130 is formed to be tapered, the diameter of the inner circumferential thread portion 1152 of the lower hole 1150 can also be made larger, so that the second reinforcing bar 220 of the second PC member 200 can be more easily inserted. Also, it is possible to make the gap margin larger even when injecting mortar.

The inner diameter of the lower hole 1150 is formed to be larger than the inner diameter of the upper hole 1140 , so that the stepped portion 1160 may be formed at the upper end of the lower hole 1150 . When the fitting body 1300 is fastened to the lower part 1130 inner circumferential thread part 1152 of the main body 1100, the fitting body 1300 pushes up the support body 1200 so that the upper end of the support body 1200 is a step part 1160 ) can be fixed in close contact with the

The stepped portion 1160 may include a plurality of injection grooves 1170 formed to communicate with the lower end of the upper hole 1140 . For example, four injection grooves 1170 may be formed in the step portion 1160 at intervals of 90 degrees. The injection groove 1170 may be formed to communicate with the lower end of the inner circumferential surface of the upper hole 1140 of the main body 1100 under the stepped portion 1160 . Therefore, the plurality of injection grooves 1170 may form a passage through which the injected mortar can flow between the outer space of the holding body 1200 and the inner space of the upper hole 1140 .

The holding body 1200 may include an inner circumferential screw portion 1220 fastened to the upper end of the reinforcing bar 220 of the second PC member 200 and an outer circumferential surface 1210 having an outer diameter smaller than the inner diameter of the lower hole 1150 . have.

The screw portion 1220 may be formed over the entire inner circumferential surface of the brace 1200 , so that the brace 1200 may be fastened to the second reinforcing bar 220 of the second PC member 200 . The screw portion 1220 of the holding body 1200 may be formed with a screw thread rotating in the opposite direction to the screw portion 1142 on the upper inner circumferential surface of the body 1100 .

The outer circumferential surface 1210 of the holding body 1200 may be formed so that its outer diameter gradually increases from the top to the bottom. So, the contour of the holding body 1200 in the longitudinal cross-sectional view of FIG. 6 may be formed in a trapezoidal shape.

The inner circumferential screw portion 1220 of the holding body 1200 may be formed to have the same inner diameter as the upper inner circumferential screw portion 1142 of the main body 1100 . The outer diameter of the holding body 1200 is formed much smaller than the lower hole 1150 of the body 1100 with the maximum outer diameter of the lower end, and a space in which the non-shrinkable mortar is injected can be formed therebetween.

The upper surface 1230 of the support body 1200 is in close contact with the step portion 1160 of the main body 1100, and the lower surface 1240 of the support body 1200 is in close contact with the upper surface of the fitting body 1300 and can be supported. . In other words, the fitting body 1300 fastened to the main body 1100 supports the brace body 1200 fastened to the second reinforcing bar 220 upward, so that the brace body 1200 is the step portion 1160 of the body 1100 . ) can be supported.

The holding body 1200 may further include a plurality of injection grooves 1250 formed on the lower surface 1240 of the side wall to communicate the space below and outside the holding body 1200 . Four of the plurality of injection grooves 1250 may be disposed on the lower surface 1240 at intervals of 90 degrees. Through the plurality of injection grooves 1250, the non-shrinkable mortar flowing into the gap between the outer circumferential surface of the second reinforcing bar 220 and the inner circumferential surface of the fitting body 1300 is the outer circumferential surface of the holding body 1200 and the lower portion of the body 1100. It may flow into the space between the inner peripheral surfaces of the hole 1150 .

Fitting body 1300 has an outer circumferential screw portion 1310 fastened to the lower inner circumferential screw portion 1152 of the main body 1100, and a lower prismatic portion 1320 formed at the lower end of the outer circumferential screw portion 1310 to be larger than the outer diameter of the outer circumferential screw portion, and, The second PC member 200 may include an inner hole 1330 formed to have an inner diameter greater than the outer diameter of the reinforcing bar 220 .

The outer circumferential screw portion 1310 may be formed in the same shape as the lower inner circumferential screw portion 1152 of the body 1100 .

The lower prismatic portion 1320 may be formed in a hexagonal column shape, for example, to rotate the fitting body 1300 by using a hexagonal wrench. The outer circumferential contour of the lower prismatic portion 1320 may be formed to have substantially the same size as the outer circumferential surface of the lower portion 1130 of the main body 1100 .

The inner hole 1330 may be formed to have a constant inner diameter by penetrating vertically (in the longitudinal direction) in the inner center of the fitting body 1300 . The inner diameter of the inner hole 1330 may be greater than the inner diameter of the brace 1200 to which the second reinforcing bar 220 is fastened, and the outer diameter of the outer circumferential threaded portion 1310 may be larger than the maximum outer diameter of the brace 1200 . So, since the upper surface 1340 of the fitting body 1300 has a radial thickness between the inner diameter and the outer diameter formed to be thicker than the support body 1200, the lower surface 1240 of the support body 1200 can be stably supported. can

The lower surface 1240 of the holding body 1200 and the upper surface 1340 of the fitting body 1300 may each be formed as a rough surface to increase the frictional force. So, by rotating the fitting body 1300, it is possible to rotate the support body 1200 fastened to the second reinforcing bar 220.

7 is a view showing a detachable rotating body and a coupling band, and FIG. 8 is a connection between the reinforcing bars of the first PC member and the reinforcing bars of the second PC member using the reinforcing bar coupling device of the PC member according to an embodiment of the present invention. Here are some longitudinal cross-sectional views that explain the process.

The turning body 1400 is formed smaller than the inner hole 1330 of the fitting body 1300 and has an outer periphery prismatic portion 1410 inserted into the inner hole 1330, and the inner diameter is greater than the outer diameter of the reinforcing bar of the second PC member 200 . It may include an inner hole 1420 formed to have a large inner diameter, and a plurality of protrusions 1430 formed to protrude at the upper end and engaged with the injection groove 1250 of the holding body 1200 to rotate the holding body 1200 .

The turning body 1400 may be formed in the form of a circular tube having a thin thickness as a whole. The outer circumferential surface of the protruding body 1400 may be formed in a regular polygonal pipe shape to constitute the outer circumferential prismatic portion 1410 . The outer circumferential prismatic portion 1410 may be formed, for example, in a 14-gonal shape. Since the outer circumferential surface of the turning body 1400 is formed of the square part 1410 , the operator can turn the outer peripheral square part 1410 of the turning body 1400 by hand.

The inner hole 1420 may be formed to have an inner diameter slightly larger than the outer diameter of the second reinforcing bar 220 of the second PC member 200 . In addition, the maximum outer diameter of the outer peripheral prismatic part 1410 is formed smaller than the inner diameter of the inner hole 1330 of the fitting body 1300, so that the turning body 1400 is formed between the outer circumferential surface of the second reinforcing bar 220 and the fitting body 1300. It can be inserted into the gap between the inner peripheral surfaces.

The plurality of protrusions 1430 are formed to protrude upward from the upper end of the protrusion 1400 , and for example, four protrusions 1430 may be disposed at intervals of 90 degrees. The plurality of projections 1430 are engaged with the injection groove 1250 of the brace 1200, and the operator can rotate the support body 1200 fastened to the second reinforcing bar 220 by turning the rotation body 1400. have.

As shown in Figure 7 (a), the turn body 1400 can be separated into two semi-circular tube-shaped parts cut in a plane passing through the center of the circular tube. Thus, the separation coupling surface 1440 of the two semi-circular tubes of the turning body 1400 may be formed in a planar shape in the radial direction.

In addition, as shown in Figure 7 (b), the separation coupling surface 1440 of the two semi-circular tubes of the rim body 1400 may be formed in a shape in which the mountains of one semi-circular tube and the valleys of the other semi-circular tube are in contact. Therefore, before coupling the rim body 1400 with the coupling band 1450, when the two semi-circular pipes of the rim body 1400 are put together, the coupling position of the two semi-circular pipes can be easily and accurately matched.

In addition, as shown in Figure 7 (c), the separation coupling surface 1440 of the two semi-circular tubes of the turning body 1400 may be formed as an inclined surface inclined at a predetermined angle with respect to the radial direction. In FIG. 7(c) , the upper separation coupling surface 1440 may be inclined in the opposite direction to the lower separation coupling surface 1440 . Accordingly, when the two semi-circular tubes of the turn body 1400 are abutted, the coupling positions of the two semi-circular tubes can be easily and accurately matched.

In addition, the turn body 1400 surrounds the lower portion of the outer peripheral prismatic portion 1410 by the coupling band 1450 so that the two semi-circular tubes may be coupled thereto. The coupling band 1450 can adjust the spacing between both ends of the band by screwing between both ends of the ring-shaped band in which one side is cut. The shape of the coupling band 1450 is not limited to the illustrated shape, and may be formed in another shape as long as it can selectively couple the rotating body 1400 separated into two semicircular tubes.

As shown in FIG. 8 , after assembling and combining the reinforcing bar coupling device 1000 , the rotating body 1400 is lowered and the coupling band 1450 is released to separate the rotating body 1400 from the second reinforcing bar 220 . can do.

On the other hand, as shown in Figure 8, the reinforcing bar coupling device 1000 of the present invention can be firmly assembled while absorbing dimensional errors in the part production process by providing various dimensional intervals or allowances in the assembly structure.

First, a gap C1 in which a thread is not formed is formed between the lower end of the upper inner peripheral surface of the main body 1100 and the lower end of the upper hole 1140 . This gap C1 may form a separation distance between the lower end of the second reinforcing bar 120 of the first PC member 100 and the upper end of the support body 1200 . Thus, the separation distance between the lower end of the second reinforcing bar 120 of the first PC member 100 and the upper end of the second reinforcing bar 220 of the second PC member 200 may be formed to be greater than the distance C1.

Next, a gap C2 is formed between the inner peripheral surface of the lower hole 1150 of the main body 1100 and the average outer diameter of the outer peripheral surface 1210 of the holding body 1200 . The interval C1 may be formed to be approximately half or more of the interval between the inner circumferential surface of the lower hole 1150 of the main body 1100 and the inner circumferential surface of the holding body 1200 . The non-shrinkable mortar may be filled and flowed into the space forming the gap C1 between the main body 1100 and the support body 1200 .

Next, a gap C3 is formed between the lower surface of the first PC member 100 and the upper surface of the lower prismatic portion 1320 of the fitting 1300 in the assembled reinforcing bar coupling device 1000 . This interval C3 corresponds to a difference between the height of the support body 1200 and the height of the outer circumferential thread 1310 of the fitting body 1300 greater than the height of the lower hole 1150 of the body 1100 . By this interval (C3), it is possible to allow a dimensional error for the height of the brace 1200 and the height of the outer circumferential thread 1310 of the fitting body 1300, and in the range C3 of the fitting body 1300 By adjusting the height, the height of the support body 1200 can be adjusted.

Then, a gap C4 is formed between the inner circumferential surface of the fitting body 1300 and the outer circumferential surface of the second reinforcing bar 220 . The second reinforcing bar 220 can be inserted with a margin into the fitting body 1300 through the gap C4, and the turning body 1400 can be easily inserted into the space formed by the gap C4. .

9 is a partial longitudinal cross-sectional view showing the injection of non-shrinkage mortar into the reinforcing bar coupling device of the assembled PC member. With reference to the drawings, a method of connecting two PC members vertically or horizontally using the reinforcing bar coupling device of the PC member of the present invention will be described.

First, the two PC members 100 and 200 manufactured in advance are provided in a state in which the main body 1100 is fastened to the lower ends of the main reinforcing bars. At this time, a threaded portion is formed at the lower end of the second reinforcing bar 120 of the first PC member 100 , and a threaded portion is formed on the upper end of the extruded reinforcing bar 220 of the second reinforcing bar 220 of the second PC member 200 . The upper end of the second reinforcing bar 120 may also be provided in a state in which a threaded portion is formed on the extruded reinforcing bar, and a threaded portion is also formed on the lower end of the second reinforcing bar 120 , so that the main body 1100 is fastened.

Next, the second reinforcing bar 220 of the second PC member 200 is fitted with a turning body 1400 on the outer periphery of the reinforcing bar, and the fitting body 1300 is fitted on the outer periphery of the turning body 1400, and then the second The turn body 1400 and the fitting body 1300 are lowered on the upper surface of the PC member 200 .

Next, the holding body 1200 is fastened to the screw-resistant reinforcing bar screw portion of the second reinforcing bar 220 of the second PC member 200 . After fastening the braces 1200 to each of the plurality of second reinforcing bars 220 as described above, the levels of the braces 1200 are identically matched.

Next, by lowering the first PC member 100 over the second PC member 200 , the extruded reinforcing bar of the second reinforcing bar 220 and the holding body 1200 fastened thereto are placed in the lower hole 1150 of the main body 1100 . insert

Next, the fitting body 1300 is raised and fastened to the lower inner circumferential screw portion 1152 of the body 1100 . After turning the fitting body 1300 until it comes into contact with the lower surface of the brace body 1200, the rough upper surface 1340 of the fitting body 1300 is formed by turning the lower square part 1320 with a wrench. It is in close contact with the rough lower surface 1240 to rotate the support body 1200 together. Thus, the upper surface 1230 of the support body 1200 can be in close contact with the step portion 1160 of the main body 1100 without a gap.

In addition, the support body 1200 may be rotated using the turning body 1400 . The turning body 1400 is lifted into the fitting body 1300 so that the upper protrusions 1430 of the turning body 1400 are fitted into the main grooves 1250 of the holding body 1200, and the turning body 1400 is removed. By turning, the upper surface 1230 of the holding body 1200 can be in close contact with the step portion 1160 of the main body 1100 without a gap. That is, the holding body 1200 may be rotated by turning the fitting body 1300 or may be rotated by turning the turning body 1400 .

After the support body 1200 is brought into close contact with the main body 1100 by using the turning body 1400, the turning body 1400 may be lowered and the coupling band 1450 may be released to separate the turning body 1400.

Finally, as shown in FIG. 9 , the perimeter of the working space 240 is surrounded by a mold, and then high-strength non-shrinkable mortar is injected and cured. The non-shrinkable mortar may be injected into the working space 240 or may be injected through the injection tube 1190 . In either case, the non-shrinkable mortar may be filled into the gap between the first PC member 100 and the second PC member 200 , the gap inside the body 1100 , and the inside of the splice sleeve 300 .

According to the reinforcing bar coupling device 1000 of the present invention, even if the non-shrinkage mortar is not injected, it can be securely fastened to tension, but by injecting the non-shrinkage mortar to fill the internal gap and cure it, slip occurs during shearing or compression. and can be combined more firmly.

10 is a partial longitudinal cross-sectional view showing that the reinforcing bar coupling device is coupled to the upper end of the second PC member as opposed to FIG. That is, the reinforcing bar coupling device 1000 and the splice sleeve 300 may be vertically inverted and disposed on the second PC member 200 side.

In this case, the lower ends of the first reinforcing bars 110 and the second reinforcing bars 120 of the first PC member 100 are arranged to extend downward from the lower surface of the first PC member 100, respectively, and the first PC member 100 ), a work space 140 may be formed at the lower vertex portion.

11 is a horizontal cross-sectional view showing a structure for coupling two PC members in the form of a rectangular column using the reinforcing bar coupling device of the PC member of the present invention, and FIG. 12 is a reinforcing bar coupling device in FIG. 11 disposed inside the upper and lower sides of the rectangle It is a horizontal cross-sectional view showing a modified example, and FIG. 13 is a horizontal cross-sectional view showing a modified example in which the reinforcing bar coupling device is disposed inside the four sides of the square in FIG. 11 . 11 to 13 show various embodiments of the arrangement of the second reinforcing bar coupled by the reinforcing bar coupling device 1000 when the two PC columns in the form of a rectangular column are combined.

11, the second reinforcing bar 120 of the first PC member 100 is disposed adjacent to the four vertices of the rectangle and coupled by the reinforcing bar coupling device 1000, and the first reinforcing bar 110 is It may be disposed adjacent to the side of the rectangle and coupled by the sleeve 300 . Three first reinforcing bars 110 may be disposed on the long side of the rectangle and two may be disposed on the short side of the rectangle.

As shown in FIG. 12 , the second reinforcing bars 120 of the first PC member 100 may be arranged two by two adjacent to the long side of the rectangle and coupled by the reinforcing bar coupling device 1000 . The first reinforcing bars 110 may be disposed adjacent to the vertices and sides of the rectangle and coupled by the sleeve 300 .

As shown in FIG. 13 , the second reinforcing bars 120 of the first PC member 100 may be arranged one by one adjacent to the four sides of the square and coupled by the reinforcing bar coupling device 1000 . The first reinforcing bars 110 may be disposed adjacent to the vertices and sides of the square and coupled by the sleeve 300 .

Figure 14 is a horizontal cross-sectional view and a longitudinal cross-sectional view showing an embodiment of combining two PC walls up and down using the reinforcing bar coupling device of the PC member of the present invention, Figure 15 is the reinforcing bar coupling device in Figure 14 in the middle of the PC wall It is a horizontal cross-sectional view and a longitudinal cross-sectional view showing an arranged modified example, Figure 16 is a side cross-sectional view and a longitudinal cross-sectional view showing an embodiment of connecting two PC walls left and right using the reinforcing bar coupling device of the PC member of the present invention, Figure 17 is 16 is a side cross-sectional view and a longitudinal cross-sectional view showing a modified example in which the reinforcing bar coupling device is arranged in the middle part of the PC wall.

14, the reinforcing bars inside the two PC walls are arranged in the vertical direction to the ground, and the second reinforcing bars 120 of the first PC member 100 are arranged adjacent to the vertices of the rectangle, so that the reinforcing bar coupling device Coupled by 1000 , the first reinforcing bar 110 may be disposed adjacent to the side of the rectangle and coupled by the sleeve 300 .

15, the reinforcing bars inside the two PC walls are arranged in the vertical direction to the ground, and the second reinforcing bars 120 of the first PC member 100 are disposed adjacent to the sides of the rectangle to combine the reinforcing bars. Combined by (1000), the first reinforcing bar 110 may be disposed adjacent to the vertices and sides of the rectangle to be coupled by the sleeve (300). In this case, around the second reinforcing bar 220 on the upper surface of the second PC member 200, a working space 240 open to one side or both sides of the second PC member 200 may be concavely formed.

As shown in FIG. 16, the reinforcing bars inside the two PC walls are arranged in the horizontal direction on the ground, and the second reinforcing bars 120 of the first PC member 100 are arranged adjacent to the vertices of the rectangle, so that the reinforcing bar coupling device Coupled by 1000 , the first reinforcing bar 110 may be disposed adjacent to the side of the rectangle and coupled by the sleeve 300 .

17, the reinforcing bars are arranged in the horizontal direction on the ground inside the two PC walls, and the second reinforcing bars 120 of the first PC member 100 are arranged adjacent to the sides of the rectangle to combine the reinforcing bars Combined by (1000), the first reinforcing bar 110 may be disposed adjacent to the vertex and sides of the rectangle and coupled by the sleeve 300. In this case, around the second reinforcing bar 220 on the coupling surface of the second PC member 200, a working space 240 opened to one side or both sides of the second PC member 200 may be concavely formed.

18 is a horizontal cross-sectional view and a longitudinal cross-sectional view showing an embodiment in which two PC walls in which reinforcing bars are arranged in two rows are vertically coupled using the reinforcing bar coupling device and sleeve of the PC member of the present invention, and FIG. 19 is the reinforcing bar coupling in FIG. It is a horizontal cross-sectional view and a longitudinal cross-sectional view showing a modified example in which the devices are arranged in the middle part of the PC wall, and FIG. 20 is a horizontal cross-sectional view and a longitudinal cross-sectional view showing a modified example in which the reinforcing bar coupling device is arranged two at each end of the PC wall in FIG. , FIG. 21 is a horizontal cross-sectional view and a longitudinal cross-sectional view showing a modified example in which the reinforcing bar coupling devices are arranged in the middle of the PC wall in FIG.

As shown in FIG. 18, reinforcing bars are arranged in the vertical direction on the ground inside the two PC walls, and may be arranged to form two rows in the thickness direction of the PC wall. The second reinforcing bar 120 of the first PC member 100 is disposed adjacent to the vertex of the rectangle and coupled by the reinforcing bar coupling device 1000, and the first reinforcing bar 110 is disposed adjacent to the side of the rectangle to be adjacent to the sleeve. (300) can be combined.

As shown in FIG. 19, reinforcing bars are arranged in the vertical direction to the ground inside the two PC walls, and may be arranged to form two rows in the thickness direction of the PC wall. The second reinforcing bars 120 of the first PC member 100 are disposed adjacent to the sides of the rectangle and coupled by the reinforcing bar coupling device 1000 , and the first reinforcing bars 110 are disposed adjacent to the vertices and sides of the rectangle. and may be coupled by the sleeve 300 . In this case, a working space 240 opened to one side of the second PC member 200 may be concavely formed around the second reinforcing bar 220 on the upper surface of the second PC member 200 .

As shown in Figure 20, the reinforcing bars are arranged in the vertical direction on the ground inside the two PC walls, in a horizontal cross-sectional view, the second reinforcing bars 120 are arranged two by two on both sides of the PC wall and the first reinforcing bars 110 can be arranged one by one in the thickness direction on the inner side of the PC wall. The two pairs of second reinforcing bars 120 of the first PC member 100 are disposed adjacent to the vertices of the rectangle and coupled by the reinforcing bar coupling device 1000, and the plurality of first reinforcing bars 110 are at the sides of the rectangle. It may be disposed adjacently and coupled by the sleeve 300 .

As shown in Figure 21, the reinforcing bars inside the two PC walls are arranged in the vertical direction to the ground, and in a horizontal cross-sectional view, the second reinforcing bars 120 are arranged two each on the inner side of the PC wall, and the first reinforcing bars 110 are It can be arranged one by one in the thickness direction on both sides and the inner side of the PC wall. The two pairs of the second reinforcing bars 120 of the first PC member 100 are arranged adjacent to the sides of the rectangle and coupled by the reinforcing bar coupling device 1000, and the plurality of first reinforcing bars 110 are the vertices of the rectangle and It may be disposed adjacent to the side and coupled by the sleeve 300 . In this case, a working space 240 opened to one side of the second PC member 200 may be concavely formed around the second reinforcing bar 220 on the upper surface of the second PC member 200 .

According to the reinforcing bar coupling device of the present invention, when two PC members are connected up and down or left and right for construction, the curing period is short and continuous construction is possible, and the workability is improved by securing a large amount of play, and at the same time, slip deformation due to such gap is reduced. can be prevented

And, by using the above-described rebar coupling device and splice sleeve together for construction, the rebar coupling device can prevent the PC member from being separated and overturned even before curing is complete, and the PC member can be cured by injecting and curing the non-shrinkage mortar. It can be combined more firmly.

In the above, an embodiment of the present invention has been described, but those of ordinary skill in the art can add, change, delete or add components within the scope that does not depart from the spirit of the present invention described in the claims. Various modifications and changes of the present invention will be possible by this, and this will also be included within the scope of the present invention.

100: first PC member 110: first reinforcing bar
120: second reinforcing bar 130: injection tube
140: workspace
200: second PC member 210: first reinforcing bar
220: second reinforcing bar 240: work space
300: sleeve
1000: rebar coupling device
1100: body 1110: upper
1112: rib 1120: middle part
1130: lower 1140: upper hole
1142: upper inner circumferential thread 1150: lower hole
1152: lower inner circumferential thread 1160: step portion
1170: injection groove 1180: injection hole
1190: injection tube
1200: brace 1210: outer peripheral surface
1220: inner circumferential thread 1230: upper surface
1240: bottom 1250: injection groove
1300: fitting 1310: outer circumferential thread
1320: lower square part 1330: inner hole
1340: upper surface 1350: outer peripheral guide portion
1400: round body 1410: outer periphery square part
1420: inner hall 1430: projection
1440: separation coupling surface 1450: coupling band

Claims (17)

A reinforcing bar coupling device of a PC member for connecting the two PC members up and down or left and right by combining the reinforcing bars of the first PC member and the reinforcing bars of the second PC member,
a body embedded in the lower end of the first PC member while fastened to the reinforcing bar of the first PC member;
a support body fastened to the upper end of the reinforcing bar of the second PC member to support the main body;
a fitting body fastened to the lower inner circumferential surface of the main body to support the support body; and
It is inserted into the inside of the fitting body and includes a turning body for adjusting the height of the support body by rotating the support body,
The fitting body includes an outer circumferential threaded portion fastened to the lower inner circumferential threaded portion of the body, a lower prismatic portion formed at a lower end of the outer circumferential threaded portion larger than the outer circumferential screw portion, and an inner diameter greater than the reinforcing bar outer diameter of the second PC member. including the hall;
The turning body is formed to be smaller than the inner hole of the fitting body and has an outer periphery prismatic portion inserted into the inner hole, an inner hole having an inner diameter larger than the outer diameter of the reinforcing bar of the second PC member, and a protrusion formed at the upper end A reinforcing bar coupling device of a PC member including a plurality of protrusions engaged with an injection groove formed at the lower end of the brace to rotate the brace. According to claim 1,
the body is
An upper portion having an upper hole formed with a threaded portion on an inner circumferential surface;
a middle part connected to the lower end of the upper part, the upper hole extending therein, and formed so that the outer diameter gradually increases downward;
Reinforcing bar coupling device of PC member, characterized in that it is connected to the lower end of the middle portion and comprises a lower hole formed with a screw portion formed on the inner peripheral surface. 3. The method of claim 2,
The upper portion of the PC member reinforcing bar coupling device, characterized in that it further comprises a plurality of ribs formed to protrude from the outer peripheral surface to be embedded in the concrete of the first PC member. 3. The method of claim 2,
The intermediate portion is formed through the side wall, PC member reinforcing bar coupling device, characterized in that it further comprises an injection hole connected to the injection tube communicating with the outer surface of the first PC member. 5. The method of claim 4,
The lower portion of the PC member reinforcing bar coupling device, characterized in that the outer diameter is formed to gradually increase toward the bottom so that it can be easily removed from the mold during casting. 5. The method of claim 4,
The inner diameter of the lower hole is formed to be larger than the inner diameter of the upper hole, and a step portion is formed at the upper end of the lower hole,
The step portion is a PC member reinforcing bar coupling device, characterized in that it comprises a plurality of injection grooves formed to communicate with the lower end of the upper hole. 7. The method of claim 6,
The brace is
an inner circumferential screw portion fastened to the upper end of the reinforcing bar of the second PC member;
Reinforcing bar coupling device of a PC member, characterized in that it comprises an outer peripheral surface that is formed smaller than the inner diameter of the lower hole. 8. The method of claim 7,
The support body is formed on the lower surface of the side wall, PC member reinforcing bar coupling device, characterized in that it further comprises a plurality of injection grooves to communicate with the lower and outer space of the support body. delete delete According to claim 1,
The turning body is separated into two semi-circular tubes cut by a plane passing through the center of the circular tube,
The two semicircular tubes are coupled by a coupling band surrounding the lower portion of the outer circumferential surface of the rotating body,
The separation coupling surface of the two semi-circular tubes is a reinforcing bar coupling device for a PC member, characterized in that the mountain of one semi-circular tube and the valley of the other semi-circular tube are in contact with each other. According to claim 1,
The turning body is separated into two semi-circular tubes cut by a plane passing through the center of the circular tube,
The two semicircular tubes are coupled by a coupling band surrounding the lower portion of the outer circumferential surface of the rotating body,
The separation coupling surface of the two semi-circular tubes is a reinforcing bar coupling device of a PC member, characterized in that it is formed as an inclined surface inclined at a predetermined angle with respect to the radial direction. According to claim 1,
The first PC member and the second PC member have a rectangular parallelepiped column or wall shape,
The first reinforcing bar of the PC member and the reinforcing bar of the second PC member are disposed adjacent to the side of the rectangle and coupled to the first reinforcing bar by a splice sleeve, and the reinforcing bar disposed adjacent to the vertex of the rectangle in the reinforcing bar coupling device Reinforcing bar coupling device of the PC member, characterized in that it comprises a second reinforcing bar coupled by. According to claim 1,
The first PC member and the second PC member have a rectangular parallelepiped column or wall shape,
The reinforcing bars of the first PC member and the reinforcing bars of the second PC member are disposed adjacent to the sides and vertices of the rectangle and the first reinforcing bars coupled by a splice sleeve, and the reinforcing bars disposed adjacent to the sides of the rectangle and combining the reinforcing bars A reinforcing bar coupling device of a PC member, characterized in that it comprises a second reinforcing bar coupled by the device. 15. The method of claim 13 or 14,
The first PC member and the second PC member have a rectangular parallelepiped wall shape,
The reinforcing bar of the PC member and the reinforcing bar of the second PC member are arranged horizontally on the ground. A reinforcing bar coupling device of a PC member for connecting the two PC members up and down or left and right by combining the reinforcing bars of the first PC member and the reinforcing bars of the second PC member,
a body embedded in the lower end of the first PC member while fastened to the reinforcing bar of the first PC member;
a support body fastened to the upper end of the reinforcing bar of the second PC member to support the main body;
a fitting body fastened to the lower inner circumferential surface of the main body to support the support body; and
It is inserted into the inside of the fitting body and includes a turning body for adjusting the height of the support body by rotating the support body,
The fitting body includes an outer circumferential threaded portion fastened to the lower inner circumferential threaded portion of the body, a lower prismatic portion formed at a lower end of the outer circumferential threaded portion larger than the outer circumferential screw portion, and an inner diameter greater than the reinforcing bar outer diameter of the second PC member. including the hall;
The outer peripheral surface of the support body is formed so that its outer diameter gradually increases from the upper end to the lower end,
The outer diameter of the fitting body is a PC member reinforcing bar coupling device, characterized in that formed larger than the maximum outer diameter of the support body.
delete

Images