KR20220101353A - Precast hollow column structure using compression-type sleeve and the construction method thereof - Google Patents

Abstract

A precast hollow column structure and a construction method thereof are disclosed. An inner form using a bent plate material is installed to manufacture the precast hollow column structure, and a plurality of intermediate supporting points against concrete placement pressure are formed on the bent plate material, thereby effectively manufacturing and constructing the precast hollow column structure. For the precast hollow column structure, disclosed are a semi-circular compression sleeve and a socket-type compression sleeve as a fixed end forming part.

Description

Precast hollow column structure using compression sleeve and its construction method

The present invention relates to a precast hollow column structure and a construction method thereof. More specifically, for the production of a precast hollow column structure, a bending plate is used as an inner formwork to effectively resist the concrete pouring pressure acting on the bent plate, and an intermediate supporting point formed using a fixed end forming tool (compression sleeve) is used. It relates to a precast hollow column structure using a compression sleeve that can be formed in large numbers to more economically manufacture and construct a precast hollow column structure and a construction method therefor.

Figure 1a is an exemplary view of the conventional synthetic PHC pile.

According to FIG. 1A, the synthetic PHC pile sets the reinforcing bar networks 82 and 83 inside the pile formwork 84, and pours the concrete 81 inside the pile formwork, and then the pile formwork 84 is rotated. The hollow part (S) is formed by forming the poured concrete into a hollow pile with a certain thickness by centrifugal force.

At this time, the reinforcing bar network 83 is exposed to the hollow portion (S) and serves as a shear connecting reinforcing bar.

Accordingly, the filled concrete is additionally poured so that the reinforcing bar network 83, which is the shear connecting reinforcing bar, is buried in the hollow portion (S), and eventually, the inner filled concrete is placed in a hollow pile manufactured so that the shear connecting reinforcing bar is exposed to the hollow portion (S). It can be seen that synthetic PHC piles are being manufactured by pouring the

Accordingly, there is an advantage that the composite performance with the concrete inside the pile can be improved by using the reinforcing bar network 83 including the internal reinforcing bars of the hollow pile as the shear connecting reinforcing bars, but it is necessary to have a formwork manufacturing facility for the PHC pile that can be rotated. There were limits.

Figure 1b is an exemplary view of the production of a half precast column using a conventional embedded internal formwork.

According to Figure 1b, the half-precast column is also formed with a hollow portion (S), the shear connection reinforcing bar 40 exposed to the hollow portion (S) is also to be reinforced as an internal reinforcing bar of the half-precast column Able to know.

A method of manufacturing such a half-precast column is as follows.

That is, as shown in Figure 1b, a first step of installing a plurality of main reinforcing bars 12 and a plurality of shear connecting reinforcing bars 40 in which both ends are bound to the main bars;

A second step of installing a plurality of light-weight section steel (50) mounted with a plurality of stud bolts (60) in a portion where the plurality of shear connecting reinforcing bars (40) cross each other except for the central portion;

a third step of installing the embedded inner formwork 20 so as to be in contact with the outside of the cross-section of the lattice composed of the plurality of shear connecting reinforcing bars 40 and the plurality of lightweight steel sections 50;

A fourth step of installing a plurality of main roots (12) and large roots (14) to be added;

a fifth step of installing external formwork (OF) at a predetermined distance apart from the large root (14), and pouring PC concrete (16) between the outer formwork (OF) and the embedded inner formwork (20); and

A sixth step of pouring the filling concrete 70 into the hollow part (S);

The embedded inner formwork 20 is a rib-rath in the form of an iron plate with a through hole formed therein, and is installed embedded in the filled concrete 70 without being demolded. It can be seen that there is an advantage in that, unlike Figure 1a, there is no need for a formwork manufacturing facility for piles.

However, since the rib-rath embedded inner formwork (20, a kind of reinforcing bar network) is only installed to be supported by the main bar 12 and the main bar 14, the PC concrete 16 and the deep concrete 70 pour pressure There was a limitation that quality control was not easy because deformation could occur.

Figure 1c is an exemplary installation view of a conventional shear reinforcing bar head.

That is, both ends of the shear reinforcing bar 33 are inserted and fastened to penetrate the central portion of the socket portion 36, and the socket portion 36 is formed to be inserted into the through hole 32 formed in the fixing plate 31. It can be seen that the socket part 36 is formed with a screw part on the outer peripheral surface of the socket part 36 so that the socket part 36 is fixed to the fixing plate 31 by the fixing nut 35 to be fixed.

However, since the socket part 36 can stably support the socket part 36 while having a fixing plate function only when the thickness of the fixing plate 31 is secured over a certain thickness, the fixing plate is embedded in concrete. When used as an internal formwork, there was a limitation that it was somewhat inefficient.

Republic of Korea Patent No. 10-0999020 (Title of the invention: Synthetic PH seed pile and synthetic PH seed pile construction method, publication date: December 09, 2010) Republic of Korea Patent No. 10-1570484 (Title of the invention: HPC column using lightweight embedded inner formwork and its manufacturing method, and construction method using the same, published date: November 20, 2015) Republic of Korea Patent No. 10-2157864 (Title of the invention: prefabricated reinforcing bar head for shear reinforcement, publication date: December 19, 2019)

Accordingly, the present invention provides a bending moment support point member for effectively supporting the PC concrete pouring pressure acting on the bending plate used as the inner formwork in the factory by using the shear connecting reinforcing bar and the fixed end forming tool on the bending plate, while the shear connecting reinforcing bar After reinforcing the column structure using It is a technical task to solve the provision of a precast hollow column structure and its construction method using a compression sleeve that is effective for quick and quality control.

A precast hollow column structure for achieving the above object,

An embedded inner formwork in which a through hole is formed to pass through the bent plate material having a hollow portion (S), and a fixed end forming part is formed on both the rear surface and the front surface of the bent plate material around the through hole; a reinforcing bar network including a shear connecting reinforcing bar reinforced so as to cross the inner hollow portion (S) and extend through the through hole so that the end thereof extends to the outside of the bending plate; and a fixed end forming part formed by pressing and fixing the shear connecting reinforcing bar on the back and front surfaces of the bending plate, wherein the shear connecting reinforcing bar is a bending moment support point member generated by the PC concrete pouring pressure by the fixed end forming part fixed by compression. make it work

The precast hollow column structure construction method for achieving the above object is,

(a) in the factory, a through hole is formed so as to penetrate the bent plate material in which the hollow part (S) is formed, and the fixed end forming part is formed on both the rear surface and the front surface of the bent plate material around the through hole manufacturing an embedded inner formwork; (b) in the factory, the step of pressing and fixing the shear connecting reinforcing bar formed on the rear and front surfaces of the bent plate to the rear and front surfaces of the bent plate; (c) In the factory, the shear connecting reinforcing bar reinforced so that the end is extended to the outside of the bent board through the through hole of the bending board across the hollow part (S) using the column structure reinforcing bar in the embedded inner formwork deploying; (d) in the factory, installing the outer formwork so that the embedded inner formwork and the reinforcing bar mesh are located inside, and pouring and curing the PC concrete between the outer formwork and the embedded inner formwork; And (e) when the PC concrete is cured, demolding the outer formwork and transporting the precast hollow column structure to the site for construction;

The precast hollow column structure according to the present invention enables the reinforcement of the column structure reinforcing bars and the shear connecting reinforcing bars together on the bent plate material, but enables the production of precast hollow column structures using PC concrete and filled concrete without complicated internal formwork facilities. do.

The precast hollow column structure according to the present invention can form an effective structure against PC concrete pouring pressure resistance by forming the shear connecting reinforcing bars and fixed end forming holes of the reinforcing bar network on the back and front surfaces of the bent plate material, thereby optimizing the reinforcing bar network for column structures. Because it can be done, the weight can be reduced, making economical construction possible.

Since the precast hollow column structure according to the present invention can be manufactured in advance and transported to the site to minimize the weight in assembly and construction, it is possible to secure the workability and constructability according to the weight reduction of the member.

Figure 1a is a manufacturing example of a conventional synthetic PHC pile,
Figure 1b is a manufacturing example of a half precast column using a conventional embedded internal formwork,
Figure 1c is an installation example of a conventional shear reinforcing bar head,
Figures 2a, 2b and 2c is an exemplary view of the configuration of the precast hollow column structure of the present invention and an exemplary view of the fixed end forming part;
3a, 3b, 3c and 3d are exemplary views of the precast hollow column structure construction method 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.

[Precast hollow column structure 100 of the present invention]

2a, 2b and 2c is an exemplary view of the configuration of the precast hollow column structure 100 of the present invention and the fixed end forming part 130 of the present invention.

The precast hollow column structure 100 is, as shown in FIGS. 2a and 2b, a column structure reinforcing bar 122 and a shear connecting reinforcing bar ( 121) of the reinforcing bar network 120 is spaced apart and manufactured using the reinforcement,

The embedded inner formwork 110 is used as an inner formwork for forming the hollow part (S), but a separate durable formwork facility is not required by using the bending plate material 111 .

At this time, the shear connecting reinforcing bar 121 crosses the hollow portion S of the precast hollow column structure 100 and both ends penetrate the embedded inner formwork 110 and extend outward from the hollow portion S to be drawn out work as hard as possible.

In addition, the shear connecting reinforcing bar 121 is a fixed end forming part 130 that can press and fix the shear connecting reinforcing bar 121 on the rear and front surfaces of the embedded inner formwork 110, as shown in FIGS. 2a and 2c. By acting as a supporting point member for the bending moment generated by the concrete 150 pouring pressure, a safe PC concrete 150 pouring operation is possible even using the embedded inner formwork 110 formed by bending the thin bending plate 111. will do

In addition, the precast hollow column structure 100, as shown in Figure 2b, after installing the embedded inner formwork 110 in which the hollow part (S) is formed inside the outer formwork 140, the outer formwork 140 and The PC concrete 150 is poured between the embedded inner formwork 110 and the factory is manufactured in advance.

Accordingly, the reinforcing bar network 120 is exposed to the hollow part (S) and serves as a shear connecting reinforcing bar, so that while the filled concrete 160 is poured into the hollow part (S) in the field, the reinforcing bars exposed to the hollow part (S) The mesh 120 serves to synthesize the filled concrete 160 and the precast hollow column structure 100 integrally with each other.

Accordingly, the precast hollow column structure 100 is, as shown in FIGS. 2a, 2b and 2c, an embedded inner formwork 110, a reinforcing bar network 120, a fixed end forming part 130, an outer formwork 140, PC Concrete 150 and the filling concrete 160 is included.

The embedded inner formwork 110 functions as an inner formwork of the precast hollow column structure 100, as shown in FIGS. 2a and 2b, and a plurality of bending plates 111 having a hollow part S formed therein. As a through-hole 112 of the formed, it is formed to extend corresponding to the extended length of the precast hollow column structure (100).

A fixed end forming part 130 is formed on the rear surface and the front surface of the through hole 112 formed on the rear surface of the bent plate material 111 .

At this time, the bending plate material 111 having the hollow part S formed therein has the advantage that it can be manufactured in a desired shape according to the hollow part S because it is freely bent using a thin steel plate, and the fixed end forming part 130 is It is also easy to form the through-hole 112 to be formed.

The fixed end forming part 130 formed on the back and front surfaces of the through hole 112 is formed with a compression sleeve formed on the bent plate 111 around the through hole 112, and the PC concrete 150 that is poured by itself is embedded inside. It serves as a closing means to prevent passing through the formwork 110 so that the embedded inner formwork 110 functions as an inner formwork.

That is, the PC concrete 150 passes through the embedded inner formwork 110 from the poured side and serves to prevent leakage to the opposite side.

In addition, the shear connecting reinforcing bar 121 of the reinforcing bar network 120 is pressed and fixed on both the front and back surfaces of the bending plate 111 of the embedded inner formwork 110 by the fixed end forming part 130 to fix the PC concrete ( 150) It serves as an intermediate support point for the bending moment caused by pouring,

In the case of the present invention, the bending moment generated by the PC concrete 150 pouring pressure is referred to as the role of the supporting point member.

Accordingly, as the shear connecting reinforcing bar 121 serves as an intermediate support point for the bending moment as above, the embedded inner formwork 110 formed by bending the thin bending plate material 111 in various shapes such as a box body is also used, which is a safe PC. The concrete 150 pouring operation is made possible, and the amount of reinforcing bars for manufacturing the reinforcing bar network 120 that is the column structure reinforcing bar 122 and the shear connecting reinforcing bar 121 can also be reduced.

Next, the reinforcing bar network 120 is assembled and installed in the embedded inner formwork 110 as internal reinforcing bars of the precast hollow column structure 100, as shown in FIGS. 2a and 2b,

Part of it is reinforced to be embedded in the PC concrete 150, and the shear connection reinforcing bar 121 exposed to the hollow part S is buried by the filled concrete 160, so that the shear connection of the precast hollow column structure 100 It serves as a reinforcing bar and serves as an internal reinforcing bar of the precast hollow column structure 100 .

Accordingly, it can be seen that, as shown in FIGS. 2A and 2B , the reinforcing bar network 120 includes the shear connecting reinforcing bars 121 and the column structure reinforcing bars 122 .

First, the shear connecting reinforcing bar 121 is a reinforcing bar installed to pass through a plurality of through-holes 112 formed in the bending plate 111 and to be disposed across the hollow portion S, as shown in FIGS. 2A and 2B . Accordingly, it is embedded in the filled concrete 160 filled in the hollow part (S) and serves as a shear reinforcing bar of the precast hollow column structure (100).

In addition, as the compression sleeve formed on the back and front of the through hole 112 into which the shear connecting reinforcing bar 121 is inserted is compressed, the shear connecting reinforcing bar 121 is fixed to the bending plate 111 to serve as an intermediate supporting point member for the bending moment. will do

Next, the column structure reinforcing bar 122 extends along a plurality of spaced apart stirrup reinforcing bars and the bending plate member 111 to surround the ends of the shear connecting reinforcing bars 121, as shown in FIGS. 2A and 2B, and the stirrup reinforcing bars It includes longitudinal reinforcing bars that connect to each other, and is reinforced to be embedded in the PC concrete 150 .

By reinforcing the column structure reinforcing bar 122 at the end of the shear connecting reinforcing bar 121, it is possible to quickly and simply reinforcing the reinforcing bar network 120 to the embedded inner formwork 110, so that the shear connecting reinforcing bar 121 is a column structure It can be seen that the reinforcing bar 122 also serves as a connecting reinforcing bar.

Next, in the fixed end forming part 130, the shear connecting reinforcing bar 121 is fixed to the bending plate 111 in the through hole 112 molded in the bent plate 111, as shown in FIGS. 2a, 2b and 2c. This is to serve as a supporting point member for bending moment generated by the PC concrete 150 pouring pressure.

That is, the shear connecting reinforcing bar 121 passes through the through hole 112 formed to penetrate the bending plate 111, and the shear connecting reinforcing bar 121 is fixed to the bending plate 111 by the compression sleeve. do.

Accordingly, the compression sleeve of the fixed end forming part 130 presses and fixes the shear connecting reinforcing bar 121 reinforced to penetrate the through hole 112 to both the front and back surfaces of the bending plate 111. The shear connecting reinforcing bar 121 is By being fixedly installed on both the back and front surfaces of the bending plate 111, it serves as an intermediate support member for the bending moment generated by the PC concrete 150 pouring.

This compression sleeve is disclosed as two embodiments.

First, the compression sleeve is set to surround the shear connecting reinforcing bar 121 reinforced to penetrate the through hole 112 through two semi-circular compression sleeves 132 as shown in FIG. The compression sleeve 132 is fixedly installed on the bending plate 111 while being directly compressed on the outer peripheral surface of the shear connecting reinforcing bar 121 .

This semi-circular compression sleeve 132 is installed on both the rear and front surfaces of the bending plate 111 based on the through hole 112 so that the shear connecting reinforcing bar 121 is more effectively fixed to the bending plate 111. .

Next, the compression sleeve inserts two socket-type compression sleeves 133 from the back side of the through hole 112 toward the front side, and passes two semi-circular compression sleeves 132 through the through hole 112, as shown in FIG. 2c. The socket-type compression sleeve 133 is set to surround the outer peripheral surface of the socket part of the socket-type compression sleeve 133, and when compressed with a pressing machine, the socket-type compression sleeve 133 is fixedly installed on the bending plate material 111 while being compressed.

As such, the present invention does not use a screw fastening method, but by using a compression sleeve, even if a thin bending plate material 111 is used, the shear connecting reinforcing bar 121 is fixed to both the front and back surfaces of the bending plate 111. (150) It becomes possible to serve as an intermediate support member for the bending moment generated by pouring.

Next, the outer formwork 140, as shown in FIGS. 2a and 2b, the reinforcing bar network 120 and the embedded inner formwork 110 integrally reinforced with the embedded inner formwork 110 are located inside the PC concrete As a form for casting 150, the column structure reinforcement 122 and the shear connecting reinforcement 121 of the reinforcing bar network 120 located between the embedded inner formwork 110 and the outer formwork 140 are placed so as to be embedded in the north end. , it is demolded after curing, so that the precast hollow column structure 100 can be manufactured in a factory.

Next, PC concrete 150, as shown in FIGS. 2a and 2b, is concrete poured in the vicinity of a factory or site in the space between the outer formwork 140 and the embedded inner formwork 110, and the column structure of the reinforcing bar network 120. The reinforcing bar 122 and the shear connecting reinforcing bar 121 end are integrated.

Next, the filled concrete 160 is filled into the hollow portion (S) of the precast hollow column structure 100 in which the hollow portion (S) is formed, as shown in FIGS. 2A and 2B , and As the concrete poured so that the shear connecting reinforcing bar 121 is buried, the precast hollow column structure 100 manufactured in the factory is brought into the site and set, and then is poured.

[ Construction method of precast hollow column structure of the present invention ]

3a, 3b, 3c and 3d show an exemplary view of the precast hollow column structure 100 construction method of the present invention.

The precast hollow column structure 100 reinforces the reinforcing bar network 120 in the embedded inner formwork 110 at the factory (which can also be produced around the site), and the reinforcing bar network 120 is embedded with the fixed end forming part 130 . It is integrated by pressing and fixed to the inner mold 110, and the PC concrete 150 is poured and cured using the outer mold 140, and the shear connection reinforcement 121 of the reinforcement mesh 120 in the hollow part S. After manufacturing the precast hollow column structure 100 so that this is exposed,

After carrying the precast hollow column structure 100 to the site and constructing it on the base plate, etc.,

It can be said that it is a construction method in which the filled concrete 160 is poured into the hollow part S so that the shear connecting reinforcing bar 121 is buried.

Accordingly, the precast hollow column structure 100 can not use a separate internal formwork system to form the hollow part (S),

Even if the embedded inner formwork 110 is manufactured as a thin plate gulgok plate 111, the PC concrete 150 can effectively resist the pouring pressure by using the fixed end forming part 130 formed on the back and front surfaces of the embedded inner formwork 110. By doing so, it is possible to optimize the installation amount of the reinforcing bar network 120, and economical and rapid construction is possible.

Accordingly, as shown in FIG. 3A , the above-described embedded inner formwork 110 is manufactured in advance at the factory, and the through hole 112 is formed in the bending plate material 111 to be manufactured.

Referring to FIG. 3A , since the bending plate 111 is free to bend, it is formed by extending it to a predetermined length, for example, as a closed rectangular box in the form of a square cross-section. Naturally, it can be seen that, as the fixed end forming part 130 , in particular, a socket-type compression-type sleeve is formed on the front and back surfaces of the bent plate material 111 .

Accordingly, the shear connecting reinforcing bar 121 constituting the reinforcing bar network 120 is reinforced across the hollow portion S in such a way that it is inserted into the two opposing through-holes 112 .

In the case of FIG. 3A , the two shear connecting reinforcing bars 121 are horizontally arranged in a cross shape with each other, but the arrangement form is not limited otherwise.

Accordingly, it can be seen that the shear connecting reinforcing bar 121 has an end formed in a hook shape so that the longitudinal reinforcing reinforcement of the column structure reinforcing bar 122 is easily connected.

Next, as shown in FIG. 3b , the shear connecting reinforcing bar 121 of the reinforcing bar network 120 is reinforcing in the embedded internal formwork 110 using the column structure reinforcing bar 122 in advance.

The column structure reinforcing bar 122 extends along a plurality of spaced stirrup reinforcing bars and the bending plate member 111 to surround the ends of the shear connecting reinforcing bars 121 and is shear-connected to the longitudinal reinforcing bars connecting the stirrup reinforcing bars to each other. It can be seen that the hook end of the reinforcing bar 121 is formed so as to be wrapped, and it is possible to quickly reinforcing the reinforcement by using the shear connecting reinforcing bar 121 .

Next, as shown in FIG. 3c, the factory installs the outer formwork 140 so that the embedded inner formwork 110 and the reinforcing bar network 120 are located inside in advance, and the PC concrete 150 is embedded with the outer formwork 140. It is poured and cured between the mold inner formwork (110).

For the outer formwork 140, the embedded inner formwork 110 is located inside, but one manufactured according to the cross-sectional shape of the precast hollow column structure 100 may be used. In general, a steel formwork may be used.

Accordingly, the embedded inner formwork 110 has a through hole 112 formed therein, but the fixed end forming part 130 also serves to block the through hole 112, so that the press-type sleeve 131 serves to block the through hole 112. (150) does not leak into the hollow part (S), and even if it leaks, there is no other problem because it flows in a small amount.

The PC concrete 150 may be poured with unrooted concrete.

Next, as shown in Figure 3d, when the PC concrete 150 is cured, the outer formwork 140 is demolded to produce the precast hollow column structure 100, and transported to the site for construction.

Since the precast hollow column structure 100 is formed such that the shear connection reinforcing bar 121 is exposed in the hollow part (S),

After erecting and setting the precast hollow column structure 100 in which the shear connecting reinforcing bar 121 is exposed to the hollow part S perpendicular to the upper surface of the base plate at the site, the shear connecting reinforcing bar 121 is embedded in concrete ( 160) is poured into the hollow part (S),

The reinforcing bar network 120 exposed to the hollow part S allows the filling concrete 160 and the precast hollow column structure 100 to be integrally synthesized with each other, thereby enabling the construction of the column 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 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 equivalent concepts should be interpreted as being included in the scope of the present invention. do.

100: precast hollow column structure
110: Recessed inner formwork
111: bent plate 112: through hole
120: rebar mesh
121: shear connection reinforcement 122: column structure reinforcement
130: fixed end forming part
131: compression type sleeve
132: semi-circular crimping sleeve 133: socket-type crimping sleeve
140: outer formwork 150: PC concrete
160: filled concrete

Claims (10)

A through hole 112 is formed so as to penetrate the bent plate material 111 in which the hollow portion S is formed, and a fixed end forming portion 130 is formed on both the back and front surfaces of the bent plate material 111 around the through hole 112. Recessed inner formwork (110);
A reinforcing bar network 120 including a shear connecting reinforcing bar 121 reinforced so as to cross the inner hollow portion S and extend through the through hole 112 so that the end thereof extends to the outside of the bending plate 111; and
and a fixed end forming part 130 formed by pressing and fixing the shear connecting reinforcing bar 121 on the back and front surfaces of the bent plate 111;
A precast hollow column structure using a compression sleeve so that the shear connecting reinforcing bar 121 acts as a bending moment support point member generated by the PC concrete 150 pouring pressure by the fixed end forming part 130 that is pressed and fixed. According to claim 1,
The embedded inner formwork 110,
The bent plate 111 is bent to form a hollow portion S, and the PC concrete 150 is poured as a compression sleeve itself formed together while forming a through hole 112 on the rear surface of the bent plate 111. A precast hollow column structure using a compression sleeve to prevent it from passing through the embedded inner formwork (110). According to claim 1,
The reinforcing bar network 120 is
As internal reinforcing bars including the shear connecting reinforcing bars 121 and the column structure reinforcing bars 122 of the precast hollow column structure 100, they are assembled and installed in the embedded inner formwork 110, and the shear exposed to the hollow part S The connecting reinforcing bar 121 is a precast hollow column structure using a compression sleeve to be embedded by the filled concrete 160 . 4. The method of claim 3,
The shear connection reinforcing bar 121 is,
A reinforcing bar installed to pass through a plurality of through-holes 112 formed in the bending plate 111 to be disposed across the hollow portion S, it is embedded in the filled concrete 160 filled in the hollow portion S and is precast A precast hollow column structure using a compression sleeve serving as a shear reinforcing bar of the hollow column structure (100). 4. The method of claim 3,
The column structure reinforcement 122 is,
It includes a plurality of spaced apart stirrup reinforcing bars to surround the end of the shear connecting reinforcing bar 121 and longitudinal reinforcing bars extending along the bending plate 111 and connecting the stirrup reinforcing bars to each other, and embedded in PC concrete 150 A precast hollow column structure using a compression sleeve to be reinforced as much as possible. According to claim 1,
The fixed end forming part 130,
As a compression sleeve, the semi-circular compression sleeve 132 is set to surround the shear connection reinforcing bar 121 reinforced to penetrate the through hole 112, and when compressed with a compression device, the semi-circular compression sleeve 132 is a shear connection reinforcing bar 121 . A precast hollow column structure using a compression sleeve to be fixedly installed on the bending plate material 111 while being directly compressed on the outer circumferential surface of the According to claim 1,
The fixed end forming part 130,
Insert the socket-type compression sleeve 133 as a compression sleeve from the back side to the front side of the through hole 112, and set the semi-circular compression sleeve to surround the outer circumferential surface of the socket part of the socket-type compression sleeve penetrating the through hole 112, A precast hollow column structure using a compression sleeve so that the socket-type compression sleeve 133 is fixedly installed on the bent plate material 111 while being compressed by pressing with a pressing machine. According to claim 1,
The PC concrete 150,
It is poured and cured using the outer formwork 140, but
The outer formwork 140 is a form in which the reinforcing bar network 120 and the embedded inner formwork 110 integrally reinforced in the embedded inner formwork 110 are located inside the PC concrete 150 as a formwork. , it is demolded after curing to enable the production of the precast hollow column structure 100 in the factory,
In the hollow part (S), filled concrete 160 is further poured,
The filled concrete 160 is filled into the hollow portion S of the precast hollow column structure 100 and poured so that the shear connecting reinforcing bars 121 of the reinforcing bar network 120 are buried. A precast hollow column structure using a compression sleeve to be poured after the precast hollow column structure 100 is brought into the site and set. (a) In the factory, the through hole 112 is formed to penetrate the bent plate material 111 in which the hollow part S is formed, and the fixed end forming part 130 is the bent plate material 111 around the through hole 112. and manufacturing the embedded inner formwork 110 formed on both the front surface;
(b) in the factory, the step of pressing and fixing the fixed end forming portion 130 formed on the rear and front surfaces of the bending plate 111 by the shear connecting reinforcing bars 121 on the rear and front surfaces of the bending plate 111;
(c) in the factory, the shear connecting reinforcing bar 121 reinforced so that the end extends to the outside of the bent plate 111 by passing through the through hole 112 of the bending plate 111 across the hollow portion S to the column structure Reinforcing the reinforcing bar network 120 in the embedded inner formwork 110 using the reinforcing bar 122;
(d) In the factory, the outer formwork 140 is installed so that the embedded inner formwork 110 and the reinforcing bar network 120 are located inside, and the PC concrete 150 is installed with the outer formwork 140 and the embedded inner formwork ( 110) between pouring and curing; and
(e) when the PC concrete 150 is cured, demolding the outer formwork 140 and transporting the precast hollow column structure 100 to the site for construction; . 10. The method of claim 9,
Step (e) is,
Set up and set the precast hollow column structure 100 in which the shear connecting reinforcing bar 121 is exposed to the hollow part (S) perpendicular to the upper surface of the base plate at the site,
As the filled concrete 160 is poured into the hollow portion S so that the shear connecting reinforcing bar 121 is buried, the reinforcing bar network 120 exposed to the hollow portion S is filled with the filled concrete 160 and the precast hollow column. A method of constructing a precast hollow column structure using a compression sleeve that allows the structures 100 to be integrally synthesized with each other to be constructed as a column structure.

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