KR102479194B1 - The twin wall manufacturing mold structure, the method of manufacturing twin walls using them, and the precast twin walls with zigwag ribs manufacturing thereby - Google Patents

Abstract

The present invention relates to a precast member which has both structural and formwork functions such that the construction of an external wall can be completed simply by filling the inside with concrete without using a separate form on site, when constructing the external wall such as a retaining wall in a reinforced concrete structure. The manufacturing mold structure for the manufacture thereof is to manufacture twin walls formed to be filled with concrete poured therein. The manufacturing mold structure comprises: a lower plate; front and rear side plates installed oppositely and spaced apart from each other while being perpendicular to the lower plate; left and right end plates installed on left and right ends of the front and rear side plates, respectively; a lower mold installed in the center of the front and rear side plates while being perpendicular to the lower plate; and an upper mold placed on an upper portion of the lower mold and coupled to the lower mold on the same plane. In a state in which the upper and lower molds are coupled to each other, a rib molding groove which penetrates forward and backward is formed.

Description

Structure of twin wall manufacturing mold, method of manufacturing twin wall using the same, and precast twin wall with zigzag ribs produced thereby ZIGWAG RIBS MANUFACTURING THEREBY}

In the present invention, in constructing an outer wall such as a retaining wall with a reinforced concrete structure, a precast member that serves both structural and formwork functions so that the construction of the outer wall can be completed only by filling the inside with concrete without using a separate formwork, and It is about related technology.

In the case of constructing an outer wall such as a retaining wall with a reinforced concrete structure, conventionally, a method of installing vertical formwork on both sides to be connected to the foundation, installing a reinforcing bar net therein, pouring concrete, and then curing it has been applied. .

However, in the case of this conventional method, since the construction process of installing and dismantling the formwork is required, not only the amount of work on the site increases, but also the work space becomes complicated and the relationship with adjacent processes becomes complicated. In addition, since the formwork cannot be dismantled until the curing of the concrete is completed, there is a problem in that the construction period is prolonged.

In order to solve this problem, various attempts have been made regarding the manufacturing method of a wall having a double wall structure that can omit the formwork while minimizing the use of temporary members or omitting the formwork by having self-reliance by performing structural functions.

As one example, a method for manufacturing a precast double structure PC wall has been disclosed in Registered Patent Publication No. 10-1776129.

As shown in FIG. 1, in the precast double structure PC wall, at least the upper PC board 12a and the lower PC board 12b are separately manufactured, and then these upper and lower PC boards are assembled with fastening bolts 16. is constituted by At this time, the concrete ribs 15 that separate the upper PC board 12a and the lower PC board 12b are separately manufactured and assembled with the fastening bolts 16 to separate the upper PC board 12a and the lower PC board 12b. It may be positioned between the upper PC plate 12a and the lower PC plate 12b.

After erecting a plurality of the assembled double-structured PC walls vertically in succession at the site, only concrete is poured between the upper PC board (12a) and the lower PC board (12b) formed by the concrete ribs (15), thereby forming a concrete wall. is completed, and since a separate formwork retention period is not required, the next process can be proceeded immediately.

However, in manufacturing the above-mentioned double structure PC wall, after preparing and assembling molds for the upper PC board (12a) and the lower PC board (12b), concrete is separately poured and then manufactured. Since the process of assembling the upper PC board 12a and the lower PC board 12b with the fastening bolts 16 must be performed separately, the manufacturing process is very cumbersome. As a result, there is a problem in that the unit price increases due to the increase in manufacturing cost.

2, which is another prior art, seeks to solve the above problems of registration number 10-1776129 by producing a double structure PC wall with only one concrete pour. Figure 2 (a) shows the process of manufacturing a double-structured PC wall, Figure 2 (b) shows a double-structured PC wall produced thereby.

The double-structured PC wall according to FIG. 2 forms a double-structured PC wall-shaped concrete filling space to be manufactured with only a lower mold and an upper mold, and pours concrete into the concrete filling space to form a PC wall with a double structure. make it possible to produce

By the way, the PC wall of the double structure produced by FIG. 2 is produced by only one casting, so productivity is improved, but since both walls are made of an H-shaped cross section integrated by a central connecting material formed in a row, the above registration number Compared to that of No. 10-1776129, it is structurally disadvantageous, and accordingly, the width of the member cannot be greatly increased.

Specifically, the PC wall of the double structure with the H-shaped cross section has to be supported by a cantilever structure with a connecting member as a fixed end against the lateral pressure of the poured concrete when concrete is poured therein at the site, so the thickness of the wall on both sides is reduced. Unless it is unreasonably thick, it is difficult to exceed 60 to 70 cm in length from the connecting material to the end of the wall. Therefore, it is common that the PC wall of the double structure according to this is manufactured with a width of 1.5 m or less.

As a result, the constructed wall has no choice but to form joints in units of 1.5 m or less. The structurally and functionally weakest part in the assembly structure is the above-mentioned joint part. Therefore, such a large number of joints not only impairs the safety of the constructed wall, but also causes uneconomical construction that increases the construction period due to the increase in the amount of work.

Of course, using an intermediate mold, as in the double structure PC wall of Registration No. 10-1776129 above, can you think of manufacturing a member with only one concrete casting while forming a connection on both ends of the wall? In this case, The intermediate mold should be installed between the lower molds to be spaced apart from the upper and lower molds in each direction, but it is not easy to install the intermediate mold in all directions and to remove the mold itself.

KR 10-1776129 B1

The present invention is to solve the problems of the prior art described above, and while the installation, separation and removal of the mold is very easy, the front and rear sidewalls of the finished member are supported close to both ends in the width direction so that the concrete is cast therein. Providing a twin wall manufacturing mold structure capable of significantly increasing the width of the sidewall by exhibiting high bearing capacity against lateral pressure, a twin wall manufacturing method using the same, and a precast twin wall with zigzag ribs manufactured by the manufacturing mold structure want to do

According to the most preferred embodiment of the present invention for solving the above problems, it is for manufacturing a twin wall formed so that concrete can be poured therein, and the lower plate and the front and rear sides are installed perpendicularly to the lower plate and spaced apart from each other. The side plates, the left and right corner plates installed at the left and right ends of the front and rear side plates, the lower mold installed at the center of the front and rear side plates perpendicular to the lower plate, and the upper mold placed on top of the lower mold and coupled to the same plane as the lower mold. It is made of a mold, and a twin wall manufacturing mold structure is provided, characterized in that rib forming grooves are formed that penetrate in the front and rear directions in a state in which the upper and lower molds are mutually coupled.

At this time, the upper protrusions formed at regular intervals in the lower mold and the upper grooves formed between the adjacent upper protrusions are provided, and the upper mold is also provided between the lower protrusions and each lower protrusion so as to correspond to the upper protrusions and the upper grooves of the lower mold. Each of the lower grooves is provided, so that the rib forming grooves are formed between the upper protrusion and the lower groove, and between the upper groove and the lower protrusion, so that they are zigzag on both sides of the front and rear side plates in the width direction.

In addition, the upper protruding piece of the lower mold and the lower groove of the upper mold are composed of a trapezoidal cross section, and the upper groove of the lower mold and the lower protruding piece of the upper mold are composed of an inverted trapezoidal cross section so that the upper and lower molds can be easily combined and separated. can make it happen.

In addition, as the most preferred embodiment of the present invention relating to a method for manufacturing a twin wall using the above-described twin wall manufacturing mold structure, a) installing a rear plate and a lower mold on the lower plate; b) installing a reinforcing bar assembly in such a way as to cover the mold from the top; c) inserting the lower protrusion of the upper mold into the upper groove of the lower mold, and combining the lower mold with the upper mold so that the upper protrusion of the lower mold is inserted into the lower groove of the upper mold; d) forming a filling space by installing the front plate, the left copper plate, and the right copper plate on the lower plate; e) pouring concrete into the filling space; f) when the curing of the concrete is completed, removing at least the upper mold and the front plate and transferring the manufactured twin wall to a stocking place; There is provided a method of manufacturing a twin wall having zigzag ribs, characterized in that consisting of.

At this time, the reinforcing bar assembly may be composed of a front reinforcing bar network, a rear reinforcing bar network, and a rib reinforcing bar network inserted between rib forming grooves while interconnecting the front and rear reinforcing bar networks.

The present invention uses the laminated coupling structure of the upper mold to the lower mold to produce a twin wall having a double wall structure with a single concrete pour, so that a quick and efficient twin wall can be produced and an economical twin wall can be supplied. do.

In addition, since the precast twin wall with zigzag ribs of the present invention is produced by one-time concrete pouring, both ends in the width direction of the twin wall are supported by ribs arranged in two rows of zigzags, so that the above width is significantly increased to Minimizes the joint, which is a weak part when assembling the twin wall for the construction of the wall in Accordingly, structural stability is improved due to the reduction of weak parts, and economic feasibility can be promoted by reducing the construction period by reducing the amount of work for joint finishing works such as joint reinforcement or joint treatment.

1 is an explanatory view related to the assembly of a precast double structure PC wall according to the prior art.
Figure 2 is a photograph of the production and structure of a double structure PC wall according to another prior art.
Figure 3 is a perspective view of a precast twin wall formed with zigzag ribs of the present invention.
4 is a cross-sectional view of portion AA of FIG. 3 .
FIG. 5 is a cross-sectional view of BB and CC of FIG. 4 .
Figure 6 is a perspective view of the fabrication mold structure of the present invention assembled.
7 is an exploded perspective view of the manufacturing mold structure.
8 is an explanatory view of a coupling structure of an upper mold and a lower mold installed inside the manufacturing mold structure.
9 is an explanatory view of a step of installing a hamold in a twin wall manufacturing method according to an embodiment of the present invention.
10 is an explanatory view of a step of installing a reinforcing bar assembly in the twin wall manufacturing method.
11 is a perspective view of the rebar assembly.
12 is an explanatory view of an upper mold installation step in the twin wall manufacturing method.
13 is an explanatory view of a step of forming a filling space in the twin wall manufacturing method.
14 is an explanatory view of a step of pouring concrete into a filling space in the twin wall manufacturing method.
15 is an explanatory view of a step of transferring the twin wall manufactured by removing the upper mold and the front plate in the twin wall manufacturing method.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in the description of the present invention, when the technical idea of the present invention is blurred or unclear due to the detailed description of the known configuration, the description of the configuration of the above known will be omitted.

3 to 5 relate to the shape of the twin wall 100 manufactured using the mold structure according to an embodiment of the present invention, FIG. 3 shows its appearance as a whole, and FIG. 4 is part A-A of FIG. It shows a cross section of , and FIG. 5 shows each cross section of B-B and C-C of FIG. 4 .

The twin wall 100 of the present invention is composed of a front wall 110, a rear wall 120 spaced apart therefrom, and a rib 130 integrating the front wall 110 and the rear wall 120. In this way, it is no different from the PC wall having a double structure of the prior art in that it is made of the front wall 110, the rear wall 120, and the rib 130.

However, in the twin wall 100 of the present invention, a plurality of the ribs 130 are zigzagly positioned in the width direction of the twin wall 100 and arranged in two rows, so that when viewed from the side direction (the corner direction), the shape of the P-shaped cross section to have

The shape of this P-shaped cross section is such that when concrete is poured after installing the twin wall 100 in the field, the lateral pressure of the concrete is applied at a position where the front and rear walls 110 and 120 of the twin wall 100 are close to both ends in the width direction, respectively. By being supported, it has strong resistance against deformation or cracking of both side ends in the width direction of the front and rear walls 110 and 120, which are joint parts with the adjacent twin walls 100.

Accordingly, the width of the twin wall 100 can be significantly increased compared to that of the prior art. For example, if the width of the ribs 130 on both sides is maintained at 1.2 m, they are arranged in two rows, so the thickness of the front and rear walls 110 and 120 are kept the same compared to the shape of the H section in which the connecting material is located in the center as in the prior art. Even in this state, the width of the twin wall 100 can be increased to at least 2.5 m. The increase in the width of the twin wall 100 reduces the number of joints that need to be connected when constructing a wall such as a retaining wall at the site, thus minimizing the number of weak points and reducing the amount of work at the site to shorten the construction period.

It is preferable to form irregularities 101 on each inner surface where the front wall 110 and the rear wall 120 face each other to increase the adhesion strength with the concrete C to be poured into the filling space 246 to be described later.

6 to 8 each show a manufacturing mold structure for manufacturing the twin wall 100 of the present invention, FIG. 6 shows an assembled state of the manufacturing mold structure, and FIG. FIG. 8 illustrates a coupling structure of an upper mold 210 and a lower mold 220 installed inside the manufacturing mold structure.

As shown in FIG. 7, the manufacturing mold structure of the present invention includes a lower plate 241 placed at the bottom, a front plate 242 and a rear plate 243 installed perpendicularly to the lower plate 241, and the The left and right copper plates 244 and 245 are installed vertically on the lower plate 241 and installed at the left and right ends of the front plate 242 and the rear plate 243, respectively, of the mold for the outer surface of the twin wall 100. make it function

At this time, the front plate 242 and the rear plate 243 are spaced apart from each other and installed facing each other, and a filling space 246 in which concrete (C) can be poured is formed therebetween.

In the center of the filling space 246 between the front plate 242 and the rear plate 243, a lower mold 220 and an upper mold 210 are formed to form a space where concrete can be poured in the future. installed in a coupled state.

The lower mold 220 is perpendicular to the lower plate 241 and is installed at the center of the front plate 242 and the rear plate 243 as described above. In addition, the upper mold 210 is placed on top of the lower mold 220 and coupled to the lower mold 220 on the same plane. In this way, in a state where the upper mold 210 and the lower mold 220 are coupled, a rib forming groove 230 penetrating forward and backward is formed at a part of the coupled portion.

These upper molds 210 and lower molds 220 may have various cross-sectional shapes, but in the most preferred embodiment, as shown in FIG. 7, the lower molds 220 are upper protrusions at regular intervals. 221 are formed, and upper grooves 222 are formed between each of the adjacent upper protrusions 221, and the upper mold 210 also has a lower protrusion 211 at regular intervals to correspond to the lower mold 220. ) is formed, and a downward groove 212 is formed between each of the adjacent downward projections 211.

Accordingly, as shown in (a) of FIG. 8, the upper protrusion 221 of the lower mold 220 is inserted into the lower groove 212 of the upper mold 210, and the lower protrusion of the upper mold 210 ( 211 is inserted into the upper groove 222 of the lower mold 220 and has a structure in which the upper mold 210 and the lower mold 220 are coupled.

Meanwhile, as described above, the rib forming groove 230 is formed when the upper mold 210 and the lower mold 220 are combined. 212, and between the lower projection 211 and the upper groove 222, respectively.

Accordingly, as shown in FIG. As described above, the ribs 130 inside the manufactured twin wall 100 are also arranged in two rows so that the front and rear walls 110 and 120 are supported at positions close to both ends in the width direction, respectively, thereby reducing the width scale of the twin wall 100. It is possible to minimize the joint of the wall to be built by greatly increasing it.

The upper and lower protrusions 221 and 211 and the upper and lower grooves 222 and 212 can be applied to any cross section of a shape capable of forming the rib forming groove 230 while being easily coupled and separated from each other.

In the embodiment shown in FIG. 8, the shape of each cross-section is composed of a trapezoid and a corresponding inverted trapezoid to facilitate coupling and separation. Specifically, the upper protrusion 221 of the lower mold 220 and the lower groove 212 of the upper mold 210 have a trapezoidal cross section, and the upper groove 222 of the lower mold 220 and the upper mold 210 The lower protrusion 211 of has a cross-section of an inverted trapezoid, so that coupling and separation are possible only by moving the upper mold 210 up and down with respect to the lower mold 220 fixed to the lower plate 241.

However, the upper and lower protrusions 221 and 211 and the inclined surfaces 231 of the upper and lower grooves 222 and 212 are in close contact with each other, so that the upper protrusion 221 is no longer inserted into the lower groove 212, and the lower protrusion 211 is also in the upper groove ( 222), the width and length of the upper and lower protrusions 221 and 211 and the upper and lower grooves 222 and 212 must be set so that the rib forming groove 230 can be formed in a coupled state so as not to be inserted into the upper and lower grooves 222 and 212.

9 to 15 each show an embodiment of a method of manufacturing the twin wall 100 using the above-described twin wall 100 manufacturing mold structure of the present invention according to the progress step.

The manufacturing method of the twin wall 100 according to the above embodiment includes the steps of installing a Hamold 220; Installing the rebar assembly 300; installing the upper mold 210; Forming a charging space 246 by installing the front plate 242 and the left and right copper plates 244 and 245; pouring concrete (C); After removing at least the upper mold 210 and the front plate 242, the step of transferring the fabricated twin wall 100 to the stacking place is sequentially performed. This will be described with reference to each drawing.

9 shows a step of installing the lower mold 220 so that the reinforcing bar assembly 300 can be installed, and the rear plate 243 and the lower mold 220 are installed on the lower plate 241.

Of course, if the size of the filling space 246, which is the inner space of the manufacturing mold structure in which all assemblies are completed, is large, the accurate installation of the reinforcing bar assembly 300 into the filling space 246 can be easily achieved, the upper mold 210 Excluding the front plate 242 and the left and right copper plates 244 and 245 can all be installed. However, here, as described above, first, only the rear plate 243 and the lower mold 220 are installed on the lower plate 241, and then the reinforcing bar assembly 300 is installed as an example.

10 shows the step of installing the reinforcing bar assembly 300, the reinforcing bar assembly 300 is installed in such a way as to cover the lower mold 220 from the top. 11 shows an embodiment related to the structure of the rebar assembly 300.

The reinforcing bar assembly 300 is prefabricated according to the specifications of the twin wall 100 to be manufactured, and may have various structures, but according to the embodiment of FIG. 11, the front reinforcing bar network 310 and the rear reinforcing bar network 320 and a rib reinforcing bar network 330.

The front reinforcing bar network 310 is vertically inserted between the upper and lower molds 210 and 220 and the front plate 242, and the rear reinforcing bar network 320 is vertically inserted between the upper and lower molds 210 and 220 and the rear plate 243. The front reinforcing bar network 310 and the rear reinforcing bar network 320 are interconnected by a rib reinforcing bar network 330 installed horizontally. The rib reinforcing bar network 330 is positioned above the upper projection 221 and the upper groove 222 of the lower mold 220.

12 shows a step of installing the upper mold 210.

As described above, the lower protruding piece 211 of the upper mold 210 is inserted into the upper groove 222 of the lower mold 220, and the upper part of the lower mold 220 is inserted into the lower groove 212 of the upper mold 210. The lower mold 220 and the upper mold 210 are coupled in such a way that the upper mold 210 is placed in the lower mold 220 so that the protrusion 221 is inserted.

Accordingly, the rib reinforcing bar network 330 of the reinforcing bar assembly 300 installed in the previous step is located under the lower projection 211 and the lower groove 212 of the upper mold 210, and is inserted into the rib forming groove 230. have a shape

When the installation of the reinforcing bar assembly 300 and the installation of the upper mold 210 are completed, as shown in FIG. It is installed to form a filling space 246 in which concrete (C) is poured.

In another embodiment of the twin wall 100 manufacturing method of the present invention, the installation of the front plate 242 and the left and right copper plates 244 and 245 can be carried out prior to the installation step of the reinforcing bar assembly 300. 220) has already been described in the installation step.

14 shows the step of pouring concrete (C) into the filling space 246.

When the above-mentioned concrete (C) is poured, curing it, separating and removing the upper mold 210, etc., and transporting the manufactured twin wall 100 to a storage location, thereby completing the manufacturing operation of the twin wall 100. do.

At this time, the upper mold 210, the front and rear side plates 242 and 243, and the left and right edge plates 244 and 245 may all be removed, and as shown in FIG. 15, the twin wall manufactured after removing only the upper mold 210 and the front plate 242 The twin wall 100 may be manufactured continuously by transferring the 100 in an upward lifting manner.

In the above, the present invention has been described in detail with reference to specific embodiments, but since the above embodiments are merely examples to make the present invention easier to understand, those skilled in the art are within the scope of the technical idea of the present invention. It is obvious that it will be possible to carry out various modifications within. Therefore, it will be said that such modifications fall within the scope of the present invention as described in the claims.

100; twinwall 101; irregularities
110; anterior wall 120; posterior wall
130; rib 210; upper mold
211; lower protrusion 212; down home
220; Hamold 221; upside down
222; Upper groove 230; Rib molding groove
231; slope 241; lower plate
242; Front plate 243; rear plate
244; Left corner plate 245; Umaguripan
246; filling space 300; rebar assembly
310; front reinforcing bar network 320; rear rebar network
330; rib rebar network C; concrete

Claims (6)

As for manufacturing the twin wall 100 formed so that concrete can be poured inside,
The lower plate 241, the front plate 242 and the rear plate 243, which are perpendicular to the lower plate 241 and spaced apart from each other, are installed at the left and right ends of the front plate 242 and the rear plate 243, respectively. The left and right copper plates 244 and 245, the lower plate 241 and the lower mold 220 installed at the center of the front plate 242 and the rear plate 243, and the lower mold 220 It consists of an upper mold 210 coupled on the same plane as the lower mold 220 while being placed on top of the
In a state in which the upper mold 210 and the lower mold 220 are coupled, rib forming grooves 230 penetrating in the front and rear are formed.
The lower mold 220 is provided with upper protrusions 221 formed at regular intervals and upper grooves 222 formed between adjacent upper protrusions 221, and the upper mold 210 is a lower mold 220 The lower protrusion 211 and the lower protrusion 212 formed between each lower protrusion 211 are provided to correspond to the upper protrusion 221 and the upper groove 222 of the rib forming groove 230 Each is formed between the upper protrusion 221 and the lower protrusion 212 and between the upper protrusion 222 and the lower protrusion 211 and is zigzag on both sides of the front and rear side plates 242 and 243 in the width direction Manufacture of the twin wall, characterized in that mold structure. delete According to claim 1,
The upper protrusion 221 of the lower mold 220 and the lower groove 212 of the upper mold 210 have a trapezoidal cross section,
The twin wall production mold structure, characterized in that the upper groove 222 of the lower mold 220 and the lower protrusion 211 of the upper mold 210 are formed of an inverted trapezoidal cross section. A method of manufacturing a twin wall 100 using the twin wall manufacturing mold structure according to claim 3,
a) installing the rear plate 243 and the lower mold 220 on the lower plate 241;
b) installing the reinforcing bar assembly 300 in such a way as to cover the lower mold 220 from the top;
c) The lower protruding piece 211 of the upper mold 210 is inserted into the upper groove 222 of the lower mold 220, and the upper protruding piece of the lower mold 220 is inserted into the lower groove 212 of the upper mold 210 ( 221) is inserted into the lower mold 220 and the upper mold 210;
d) forming a filling space 246 by installing the front plate 242, the left copper plate 244, and the right copper plate 245 on the lower plate 241;
e) pouring concrete (C) into the filling space 246;
f) when the curing of the concrete (C) is completed, removing at least the upper mold 210 and the front plate 242 and then transferring the manufactured twin wall 100 to a stocking place; Manufacturing method of the twin wall formed with zigzag ribs, characterized in that consisting of. According to claim 4,
The reinforcing bar assembly 300 is a rib reinforcing bar network 330 inserted between the front reinforcing bar network 310, the rear reinforcing bar network 320, and the rib forming groove 230 while interconnecting the front and rear reinforcing bar networks 310 and 320. A method of manufacturing a twin wall with zigzag ribs, characterized in that formed. As produced by the twin wall manufacturing mold structure of claim 1 or 3,
With the front wall 110,
The rear wall 120 spaced apart from the front wall 110,
It consists of ribs 130 that integrate these front walls 110 and rear walls 120,
A plurality of the ribs 130 are zigzag in the width direction of the twin wall 100 and are arranged in two rows.

Images