KR20220104324A - Precast wall structure using fixing support parts and the construction method thereof - Google Patents

Abstract

Disclosed is a precast wall structure and a construction method thereof, wherein a bent board is used and installed as an inner formwork for manufacturing the precast wall structure, and a plurality of intermediate support points against concrete pouring pressure applied to the bent board are formed to efficiently manufacture and construct the precast wall structure. The disclosed precast wall structure has a semicircular compression sleeve and a socket type compression sleeve as a fixed end forming unit for forming the support points. According to the present invention, the precast wall structure is rapidly constructed and is efficient in quality management.

Description

Precast wall structure using fixed end forming part and its construction method

The present invention relates to a precast wall structure using a fixed end forming part and a construction method thereof. More specifically, for the production of precast wall structures, the inner formwork for embedding is installed using a bending board, but a plurality of fixed end forming parts are formed to effectively resist the concrete pouring pressure acting on the bent board to form a precast wall structure. It relates to a precast wall structure using a fixed end forming part that can be constructed more economically and a construction method therefor.

Figure 1a is a construction example of a conventional precast retaining wall structure.

That is, the precast panel-shaped walls 51 and 52 made by precast on the upper surface of the base plate 56 are constructed to connect up and down with each other, and the upper and lower panel-shaped walls 51 and 52 are connected by bolts ( 55) to be connected to each other.

Accordingly, since the panel-shaped walls 51 and 52 are manufactured and transported in advance at the factory for connection and construction, the reduction in their own weight becomes very important. It can be seen that (53,54) is formed.

Accordingly, there is an advantage that the retaining wall can be constructed by minimizing the concrete pouring operation in the field, but the size of the panel-shaped walls 51 and 52 is also limited. The connection method alone may not ensure safety.

In order to secure safety, it is necessary to increase the cross-sectional size of the panel-shaped walls 51 and 52, which inevitably undermines the advantages of the precast construction method because it becomes a factor of increasing the self-weight.

Figure 1b is a conventional half-precast method wall construction example.

That is, the outer panel 10 and the inner panel 20 which are spaced apart and face each other;

a plurality of truss connecting members 30 for interconnecting the outer panel 10 and the inner panel 20;

Rail members 11 and 21 respectively embedded in the outer panel 10 and the inner panel 20 and connected to the truss connecting member 30;

The truss connection member 30 is spaced apart by a predetermined distance between the horizontal member 31 and the one horizontal member 31 and the other horizontal member 31 for connecting the rail members 11 and 21 in the horizontal direction. Including an inclined member 33 connecting the rail members 11 and 21 in an inclined direction,

A precast wall including a coupling member 40 coupled along the longitudinal direction to one surface of the rail members 11 and 21 connected to the truss connection member 30 is introduced.

In other words, in the case of manufacturing and connecting the panel-shaped walls 12 and 13 in a full-precast manner as shown in FIG. 1A , there are size and construction restrictions, so the outer panel 10 and the inner panel are spaced apart from each other in the field. After installing (20), concrete (C) is poured into the inner space between the outer panel (10) and the inner panel (20) and synthesized with each other, the truss connecting member (30) and the rail members (11, 21) and This is to solve the difficulty of reinforcing reinforcement while integrating the outer panel 10 and the inner panel 20 with each other using the same inner steel materials.

However, since the rail members 11 and 21 connected to the truss connection member 30 have no choice but to increase manufacturing and processing costs, there is also a limit to their application.

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.

In the end, it can be seen that when the conventional precast method is used to construct the wall structure on the upper surface of the base plate, the half or full-precast method is used. It can be seen that the half-precast method is used,

However, even in this half-precast method, the self-weight of the panel member itself for pouring filled concrete is inevitably increased, and truss members and rail members that can replace reinforcing bars are used, but the manufacturing and processing costs are high. It can be seen that there is a limit to

Republic of Korea Patent Publication No. 10-2020-0112052 (Title of the invention: precast wall with reinforced pouring pressure resistance, publication date: October 05, 2020) Republic of Korea Patent No. 10-1327388 (Title of the invention: PC wall for a two-part prefabricated PC structure having a bending moment and static moment resistance expansion structure, publication date: November 08, 2013) 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 uses a bending moment support point member to effectively support the PC concrete pouring pressure acting on the bending plate material used as the inner formwork for embedding to the bending plate material by using a fixed end forming part such as a shear connection reinforcing bar, a compression sleeve, and an incision slit. Precast wall structure and its construction method using a fixed end forming part that is effective for quick and quality control by reinforcing wall structure reinforcement using shear connecting reinforcing bars and constructing wall structures by pouring wall concrete and filling concrete as a technical problem to be solved.

In the precast wall structure using the fixed end forming part of the present invention for achieving the above object, the precast hollow column structure has a through hole formed so as to penetrate the bent plate material, and is spaced apart from each other so that the inner hollow part (S) is formed in between. Recessed inner formwork; a reinforcing bar network including shear connecting reinforcing bars reinforced to cross the inner hollow portion (S) and extend through both through-holes so that the ends extend to the outside of the bending plate material; and a fixed end forming part formed to press and fix the shear connecting reinforcing bar to the bending board, wherein the shear connecting reinforcing bar by the fixed end forming part fixed by compression acts as a bending moment supporting point member generated by PC concrete pouring pressure do.

The precast wall structure construction method using the fixed end forming part of the present invention for achieving the above object comprises the steps of (a) manufacturing an embedded inner formwork having a through hole to penetrate through the bent plate material in a factory and setting it to be spaced apart from each other ; (b) In the factory, the shear connecting reinforcing bar is pressed and fixed to the bending plate so that the end is extended to the outside of the bending plate by passing through the through hole of the bending plate across the inner hollow (S) between the both embedded inner formwork. forming a forming part; (c) in the factory, reinforcing the reinforcing bar network in the embedded inner formwork using the shear connecting reinforcing bars of the wall structure; (d) in the factory, installing the outer formwork so as to be spaced apart from both embedded inner formwork, pouring and curing PC concrete between the outer formwork and the embedded inner formwork; (e) when the PC concrete is cured, demolding the outer formwork to transport the precast wall structures to the site and constructing them so as to be spaced apart from each other; and (f) so that the filled concrete is poured into the inner hollow part (S) so that the shear connecting reinforcing bars are embedded, and the reinforcing bar network exposed to the inner hollow part (S) is integrally synthesized with the filled concrete and the precast wall structure. and constructing a wall structure by doing so.

The precast wall structure according to the present invention enables the reinforcement of the wall structure reinforcing bars and the shear connecting reinforcing bars together on the bent board, but it is possible to manufacture the precast wall structure using PC concrete and filled concrete without complicated formwork facilities.

The precast wall structure according to the present invention can be formed into an effective structure against the PC concrete pouring pressure resistance by forming the shear connecting reinforcing bar and the fixed end forming part of the reinforcing bar network on the bent plate material. can be reduced, making economical construction possible.

Since the precast wall 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 constructability and workability according to the weight reduction of the member.

1a is a construction example of a conventional precast retaining wall structure;
Figure 1b is a conventional half-precast method wall construction example,
Figure 1c is an installation example of a conventional shear reinforcing bar head,
Figures 2a and 2b is an exemplary view of the configuration of the precast wall structure of the present invention and an exemplary view of a fixed end forming part;
Figures 3a, 3b and 3c is an exemplary view of the precast wall 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 wall structure 100 of the present invention]

Figures 2a and 2b is an exemplary view of the configuration of the precast wall structure 100 of the present invention and the fixed end forming part 130 of the present invention.

The precast wall structure 100 is a wall structure reinforcing bar 122 and a shear connecting reinforcing bar 121 in the embedded inner formwork 110 in which the bending plate material 111 is connected up and down, as shown in FIGS. 2a and 2b. It is manufactured using a plurality of reinforcement mesh 120,

The embedded inner formwork 110 is spaced apart from each other to be used as an inner formwork for a wall structure for forming the inner hollow part (S), but a separate durable formwork facility is provided by using the upper and lower connections of the bending plate material 111. that made it unnecessary.

At this time, the shear connecting reinforcing bar 121 crosses the inner hollow portion (S) of the precast wall structure 100 and both ends penetrate the embedded inner formwork 110 and extend outward from the inner hollow portion (S). dispatched to be withdrawn.

In addition, the shear connecting reinforcing bar 121 is PC concrete 150 by a fixed end forming part 130 that can press and fix the shear connecting reinforcing bar 121 to the embedded inner formwork 110, as shown in FIGS. 2a and 2b. ) By acting as a bending moment support point member generated by the pouring pressure, even if the embedded inner formwork 110 formed by bending the hollow plate 11, which is a thin plate, is used, safe PC concrete 150 pouring work is possible.

In addition, the precast wall structure 100 is, as shown in FIG. 2a, after installing the embedded inner formwork 110 in which the inner hollow part S is formed is spaced apart from the outer formwork 140, the outer formwork 140 The PC concrete 150 is poured between the and the embedded inner formwork 110 to be manufactured in advance.

Accordingly, the reinforcing bar network 120 is exposed to the inner hollow part (S) and also serves as a shear connecting reinforcing bar, and while the filled concrete 160 is poured into the inner hollow part (S) at the site, the inner hollow part (S) The exposed reinforcing bar network 120 serves to synthesize the filled concrete 160 and the precast wall structure 100 integrally with each other.

Accordingly, the precast wall structure 100 is, as shown in FIGS. 2a and 2b, an embedded inner formwork 110, a reinforcing bar network 120, a fixed end forming part 130, an outer formwork 140, a PC concrete 150. , will include the filling concrete (160).

The embedded inner formwork 110 functions as an inner formwork spaced apart from each other of the precast wall structure 100, as shown in FIGS. 2A and 2B, and a plurality of through holes 112 are formed in the bending plate 111. will be.

For example, the bent plate material 111 is formed to correspond to the extension height of the precast wall structure 100 by stacking a plurality of them in a manner that connects both flanges up and down with a U-shaped channel member.

Accordingly, both flanges of the bent plate member 111 have the advantage of also serving as a shear connector to increase the function of connecting the bent plate member 111 and the composite performance as the PC concrete 150 is poured.

In this case, the fixed end forming part 130 is formed on the front and rear surfaces of the through-holes 112 formed in the bending plate 111 .

Since the bending plate material 111 is freely bent using a thin steel plate, it has the advantage that it is easy to manufacture in a desired shape like a U-shaped channel member, and the through hole 112 in which the fixed end forming part 130 is formed is punched, etc. can be easily formed by

The fixed end forming part 130 formed in the through hole 112 is formed of a compression sleeve or a cut slit formed in the bending plate 111 around the through hole 112, and the PC concrete 150 that is poured by itself is embedded inside. It also serves as a closing means to prevent passage of the formwork 110 so that the embedded inner formwork 110 functions as the inner formwork of the wall structure.

That is, the PC concrete 150 passes through the embedded inner formwork 110 from the poured side and serves to prevent leakage into the opposite inner hollow portion (S).

In addition, the shear connecting reinforcing bar 121 of the reinforcing bar network 120 is pressed against the bending plate 111 of the embedded inner formwork 110 by the fixed end forming part 130, so that the PC concrete 150 is poured. Acting as an intermediate support point for the bending moment, the present invention will be referred to as the bending moment support point member role generated by the PC concrete 150 pouring pressure.

Therefore, as the shear connecting reinforcing bar 121 serves as an intermediate support point for the bending moment as above, it is safe to use the embedded inner formwork 110 formed by bending the bending plate 111, which is a thin plate, safely placing the PC concrete 150. This is made possible, and the amount of reinforcing bars for manufacturing the reinforcing bar network 120 that is the wall structure reinforcing bar 122 and the shear connecting reinforcing bar 121 can also be reduced.

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

The wall structure reinforcing bar 122 is reinforced to be embedded in the PC concrete 150, and the shear connecting reinforcing bar 121 exposed to the inner hollow part S is buried by the filled concrete 160, so that the precast wall structure ( 100) serves as a shear connecting reinforcing bar and serves as an internal reinforcing bar of the precast wall 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 wall structure reinforcing bars 122 .

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

In addition, the shear connecting reinforcing bar 121 is fixed and installed on the bending plate 111 while the pressing sleeve formed in the through hole 112 into which the shear connecting reinforcing bar 121 is inserted and the fixed end forming part 130, which is a cut slit, is compressed. It will act as an intermediate support member for the moment.

Next, the wall structure reinforcing bar 122 extends along a plurality of horizontal reinforcing bars and bending plates 111 connected to the bent end of the shear connecting reinforcing bar 121 as shown in FIGS. 2A and 2B and extending along the horizontal reinforcing bar and It includes a straight reinforcing bar to be connected, and is reinforced to be embedded in the PC concrete 150 .

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

Next, as shown in FIGS. 2A and 2B , the fixed end forming part 130 is configured such that the shear connecting reinforcing bar 121 is fixed to the bending plate 111 in the through-hole 112 molded in the bending plate 111 so that the PC It is intended to serve as a support point for bending moment generated by the concrete 150 pouring pressure.

That is, the shear connecting reinforcing bar 121 is inserted through the through hole 112 formed to penetrate the bent plate material 111, and the shear connecting reinforcing bar 121 is formed by the compression sleeves 132 and 133 or the incision slit 131. It is to be fixedly installed on the bending plate material 111 so that the shear connecting reinforcing bar 121 serves as a bending moment support point member generated by the PC concrete 150 pouring pressure.

Accordingly, the compression sleeves 132 and 133, which are the fixed end forming portions 130, are as follows.

First, looking at the incision slit 131, as shown in Fig. 2b, the incision slit 131 is formed from the inside of the bending plate 111 to the outside, but is formed together while forming the through hole 112,

A plurality of the through-holes 112 of the bending plate 111 are formed, and the shear connecting reinforcement 121 of the reinforcing bar network 120 is press-fixed to the bending plate 111 by the PC concrete 150 pouring pressure. It serves as a supporting point for the bending moment that occurs.

At this time, the compression may be performed by pressing the incision slit as it is, or using a semi-circular pressing sleeve 132 set to surround the incision slit 131 .

That is, the bending plate 111 is punched using a punching means so that the cutting slit 131 is formed from the inside of the bending plate 111 to the outside in the through hole 112 formed so as to penetrate the bending plate 111 to penetrate the through hole. It is formed so that the cutting slit 131 is formed together as the 112 is formed.

The cutting slit 131 can be simply formed by the same method as punching using a thin bending plate material 111, and is very effective because it is also easy to compress.

Next, the compression sleeves 132 and 133 are divided into two embodiments.

First, the compression sleeve is set to surround the shear connecting reinforcing bar 121 reinforced so as to penetrate the through hole 112 through two semi-circular compression sleeves 132 as shown in FIG. 2B. 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 .

The semi-circular compression sleeve 132 is installed on the bending plate 111 based on the through hole 112 so that the shear connecting reinforcing bar 121 is more effectively fixed and installed on the bending plate 111 .

The pressed semi-circular compression sleeve 132 is a bending moment support point member caused by the compression and fixing of the shear connecting reinforcing bar 121 of the reinforcing bar network 120 to the bending plate 111 and the PC concrete 150 pouring pressure. do.

Next, the compression sleeve inserts two socket-type compression sleeves 133 toward the back side of the through hole 112, and inserts two semi-circular compression sleeves 132 through the through hole 112, as shown in FIG. 2b. Set to surround the outer circumferential surface of the socket part of the mold pressing 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.

The semi-circular compression sleeve 132 and the socket-type compression sleeve 133 also combined, the shear connecting reinforcement 121 of the reinforcing bar network 120 is pressed and fixed to the bending plate 111, generated by the PC concrete 150 pouring pressure It acts as a bending moment support point member.

As such, the present invention does not use a screw fastening method, but by using a compression sleeve or an incision slit, even if a thin bending plate material 111 is used, the shear connecting reinforcing bar 121 is fixed to the bending plate material 111. 150) It can serve as an intermediate support member for the bending moment caused by pouring.

Next, the outer formwork 140 is installed on the opposite side of the inner hollow part (S) to the reinforcing bar network 120 integrally reinforced with both embedded inner formwork 110, as shown in FIGS. 2a and 2b, so that the PC concrete 150 ) as a formwork to be poured, the wall structure reinforcing bar 122 and the shear connecting reinforcing bar 121 of the reinforcing bar network 120 located between the embedded inner formwork 110 and the outer formwork 140 are poured so that the ends are embedded, After curing, it is demolded and the precast wall structure 100 can be manufactured.

Next, PC concrete 150, as shown in Figs. 2a and 2b, as concrete poured into the space between the embedded inner formwork 110 and the outer formwork 140, the wall structure reinforcing bar 122 of the reinforcing bar network 120 and The shear connection reinforcing bar 121 is integrated with the end.

Next, the filled concrete 160 is filled into the inner hollow portion (S) of the precast wall structure 100 in which the inner hollow portion (S) is formed, as shown in FIGS. 2a and 2b, and the reinforcing bar network 120 . As the concrete poured so that the shear connecting reinforcing bar 121 of the is buried, the precast wall structure 100 is brought into the site and set, and then poured.

[ Precast wall structure construction method of the present invention ]

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

The precast wall structure 100 reinforcing 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 as the fixed end forming part 130 is embedded. It is integrated by pressing and fixed to the inner formwork 110, and the PC concrete 150 is poured and cured using the outer formwork 140. After manufacturing the precast wall structure 100 to be exposed,

After bringing in the precast wall 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 inner hollow part S so that the shear connecting reinforcing bar 121 is buried.

Accordingly, it becomes possible not to use a separate inner formwork system to form the inner hollow part (S) of the precast wall structure 100,

Even if the embedded inner formwork 110 is manufactured as a thin bent sheet material 111, it is possible to effectively resist the PC concrete 150 pouring pressure using the fixed end forming part 130 formed in the embedded inner formwork 110. It is also 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 is manufactured by forming a through hole 112 in the bending plate material 111 .

Referring to FIG. 3A , the U-shaped channel member-shaped bending plate 111 is connected up and down to form a constant height, and a through hole 112 of the bending plate 111 is formed, and the bending plate 111 is formed. The fixed end forming part 130 formed of the compression sleeves 132 and 133 or the incision slit 131 is formed.

Accordingly, the shear connecting reinforcing bar 121 constituting the reinforcing bar network 120 is reinforced across the inner 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 shear connecting reinforcing bars 121 are arranged to be spaced apart from each other in the upper and lower directions, but the arrangement form is not otherwise limited.

Accordingly, it can be seen that the shear connecting reinforcing bar 121 has an end formed in a hook shape so that the horizontal and vertical reinforcing bars of the wall structure reinforcing bar 122 can be easily connected.

Next, the wall structure reinforcing bar 122 of the reinforcing bar network 120 is reinforced to the embedded inner formwork 110 by using the shear connecting reinforcing bar 121 in advance.

It can be seen that the wall structure reinforcing bar 122 is formed such that the horizontal reinforcing bar integrated with the vertical reinforcing bar to surround the end of the shear connecting reinforcing bar 121 surrounds the hook end of the shear connecting reinforcing bar 121, and shear connection By using the reinforcing bar 121, it is possible to quickly place the reinforcement as a reinforcement sum.

Next, as shown in Figure 3b, the factory installs the outer formwork 140 so as to be spaced apart from the embedded inner formwork 110 and the reinforcing bar network 120, and the PC concrete 150 is installed with the outer formwork 140 and the embedded type. It is poured and cured between the inner formwork (110).

The outer formwork 140 is usually made of a steel formwork.

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 PC concrete 150 poured differently is the inner hollow part. It does not leak with (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.

Accordingly, it can be seen that the both embedded inner formwork 110 connected to each other by the shear connecting reinforcing bar 121 is set as a vertical concrete wall of a certain thickness by the outer formwork 140 through which the PC concrete 150 is poured. .

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

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

The precast wall structure 100 in which the shear connection reinforcing bar 121 is exposed to the inner hollow part S is set up and set in the field perpendicular to the upper surface of the base plate.

As a result, the filled concrete 160 is poured into the inner hollow part (S) so that the shear connecting reinforcing bar 121 is buried, and the reinforcing bar network 120 exposed to the inner hollow part (S) is filled with the filled concrete 160 and free. It is possible to construct a wall structure by allowing the cast wall structures 100 to be integrated with each other.

Accordingly, in the field, the precast wall structure 100 is connected to the upper surface of the base plate, and the construction can be performed by pouring the filled concrete 160 .

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

Claims (10)

The through-hole 112 is formed so as to pass through the bent plate material 111, and is spaced apart from each other and the inner hollow part S is formed therebetween;
A reinforcing bar network 120 including a shear connecting reinforcing bar 121 reinforced to cross the inner hollow portion (S) and penetrate both through holes 112 so that the ends extend to the outside of the bending plate member 111; and
A fixed end forming part 130 formed so as to press and fix the shear connecting reinforcing bar 121 to the bending plate 111;
A precast wall structure using a fixed end forming part 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 fixed end forming part 130,
The cutting slit 131 is formed from the inside of the bending plate 111 to the outside, but the through-holes 112 are formed together while a plurality of them are formed corresponding to the through-holes 112 of the bending plate 111. A precast wall structure using a fixed end forming part, in which the shear connecting reinforcing bar 121 of the reinforcing bar network 120 is press-fixed to the bending plate 111 and serves as a bending moment support point member generated by the PC concrete 150 pouring pressure. 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 wall structure using a fixed end forming part that is fixedly installed on the bending plate material 111 while being pressed directly on the outer circumferential surface of the PC concrete 150 and serves as a bending moment support point member generated by the pouring pressure of the PC concrete 150. According to claim 1,
The fixed end forming part 130,
Insert the socket-type compression sleeve 133 as a compression sleeve from the through hole 112 toward the front side, and set the semi-circular compression sleeve to surround the outer peripheral surface of the socket part of the socket-type compression sleeve penetrating the through hole 112, using a compression machine The socket-type compression sleeve 133 by compression is fixed to the bending plate material 111 while being compressed, and a precast wall structure using a fixed end forming part serving as a support point member for bending moment generated by the PC concrete 150 pouring pressure. According to claim 1,
The embedded inner formwork 110,
It is formed by stacking a plurality of bent plate members 111 and connecting them up and down to correspond to the extension height of the precast wall structure 100, and a fixed end forming part 130 is provided in the through hole 112 formed in the bent plate member 111. A precast wall structure using a fixed end forming part to be formed. According to claim 1,
The reinforcing bar network 120 is
As internal reinforcing bars including the shear connecting reinforcing bars 121 and the wall structure reinforcing bars 122 of the precast wall structure 100, they are assembled and installed in the embedded inner formwork 110, and the front end exposed to the inner hollow part (S) The connecting reinforcing bar 121 is a precast wall structure using a fixed end forming part to be buried by the filled concrete 160 . 7. The method of claim 6,
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 material 111 and to be disposed across the inner hollow portion S. It is embedded in the filled concrete 160 filled in the inner hollow portion S. It serves as a shear reinforcement of the precast wall structure 100,
The wall structure reinforcement 122 is,
A precast wall structure including a plurality of spaced horizontal reinforcing bars and vertical reinforcing bars to surround the ends of the shear connecting reinforcing bars 121, and using a fixed end forming part to be reinforced to be embedded in the PC concrete 150. 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 that allows the PC concrete 150 to be poured by positioning it spaced apart from the embedded inner formwork 110, and is demolded after curing so that the precast wall structure 100 can be manufactured,
In the inner hollow part (S), the filling concrete 160 is further poured,
The filling concrete 160 is filled into the inner hollow portion S of the precast wall structure 100 and poured so that the shear connecting reinforcing bars 121 of the reinforcing bar network 120 are embedded. A precast wall structure using a fixed end forming part to be poured after being brought into the site and set (100). (a) in a factory, manufacturing the embedded inner formwork 110 having a through hole 112 formed therethrough so as to penetrate the bent plate material 111 and setting it to be spaced apart from each other;
(b) in the factory, through the through hole 112 of the bending plate 111 across the inner hollow (S) between the both embedded inner formwork 110 so that the end extends to the outside of the bending plate 111 forming a fixed end forming part 130 to press and fix the shear connecting reinforcing bar 121 to the bending plate 111;
(c) reinforcing the reinforcing bar network 120 in the embedded inner formwork 110 using the shear connecting reinforcing bar 121 to the wall structure reinforcing bar 122 in the factory;
(d) In the factory, the outer formwork 140 is installed so as to be spaced apart from both the embedded inner formwork 110, and the PC concrete 150 is poured and cured between the outer formwork 140 and the embedded inner formwork 110. making;
(e) when the PC concrete 150 is cured, demolding the outer formwork 140 to transport the precast wall structure 100 to the site and constructing them to be spaced apart from each other; and
(f) As the filled concrete 160 is poured into the inner hollow part (S) so that the shear connecting reinforcing bar 121 is buried, the reinforcing bar network 120 exposed to the inner hollow part (S) is filled with the filled concrete 160 and constructing the wall structure by allowing the precast wall structure 100 to be integrated with each other. 10. The method of claim 9,
In the wall structure of step (e), a plurality of precast wall structures 100 are connected up and down, so that the shear connecting reinforcing bars 121 are buried so that the filled concrete 160 is poured into the inner hollow part (S), A method of constructing a precast wall structure using a fixed end forming part such that the reinforcing bar network 120 exposed to the inner hollow part S is integrally synthesized with the filled concrete 160 and the precast wall structure 100 with each other.

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