KR102054364B1 - Prefabricated lightweight concrete form - Google Patents

Abstract

The present invention relates to a prefabricated light mold with a dividable lateral plate, which is formed by combining a plurality of lateral plate units with a pair of lateral plates installed on both sides of a lower plate, and, more specifically, to a prefabricated light mold with a dividable lateral plate, capable of facilitating the welding of a stirrup and having excellent manufacturing efficiency while being applied to various beam heights by regulating the number of lateral plate units having a predetermined standard in accordance with the height of a beam. According to the present invention, the prefabricated light mold comprises: a lower plate for placing concrete therein; and a pair of lateral plates installed on both sides of the lower plate, respectively. The lateral plates are formed by combining a plurality of lateral plate units vertically. The lateral plate units comprise: a side plate; an upper rib curved horizontally from the top of the side plate to the inside; and a lower rib curved horizontally from the bottom of the side plate to the inside to be combined with the upper rib of a lower lateral plate unit. A horizontal extension part extended in a horizontal direction is formed in an end part of the lower rib, and an insertion groove in which a stirrup placed in the mold is inserted and fixed by welding is formed in an inner end part of the horizontal extension part.

Description

Side plate split type prefabricated lightweight formwork

The present invention relates to a side plate split type prefabricated lightweight formwork in which a pair of side plates provided on both sides of the lower plate are configured by combining a plurality of side plate units up and down, and more specifically, side plate units of a predetermined standard according to beam height. It can be installed at various beam heights, and can be applied to various beam heights.

Reinforced concrete method is a method of finishing the structure by installing the formwork for the construction of each member to reinforce the reinforcement inside the formwork and to cast concrete.

The formwork is a temporary structure that is temporarily installed in order to make the concrete with a certain shape and dimensions until the concrete is cured, the formwork is essential in the reinforced concrete structure.

In general, the formwork is composed of a formwork panel for forming a concrete surface and a frame bar supporting the formwork panel, and after the formwork is installed, construction works such as joists, yokes, and copper bars are provided to support the formwork.

However, such construction work is not only expensive, but also requires a lot of time and money to assemble and dismantle the formwork or copper bar, and it is inefficient because it requires a separate surface treatment process after the formwork is demolded.

Accordingly, as shown in FIG. 1, a U-shaped formwork die was formed by bending a thin metal sheet (Registration No. 10-1009753, etc.).

In the registration technology, since the die is automatically produced by roll forming a thin steel plate having a thickness of 1.0 mm to 1.2 mm, production is easy.

In addition, there is no separate support frame, so it is light in weight and easy to handle and install.

In addition, since the formwork is brought in and installed in the factory in the form of pre-assembled finished products, it is possible to reduce the manpower and shorten the air by minimizing the field work.

Furthermore, since the formwork demoulding process is omitted due to the demolition of permanent formwork, there are various advantages such as the prevention of noise complaints and the improvement of the on-site environment.

The lightweight formwork used in the conventional beam structure is manufactured by welding each side plate to both sides of the lower plate. However, since the beam size is different for each site, and the beams of various dances are designed in the same site, the side plate should be roll-formed separately for each standard of the beam when the technology is applied.

Therefore, there is a problem in that the initial cost is high because the separate roll forming line must be driven according to the side plate standard. In addition, there is a difficulty in supplying and controlling the inventory because the required quantity must be manufactured separately for each specification.

On the other hand, in order to support the side pressure when placing concrete, the side plate of the pre-assembled lightweight formwork is often fixed to the stub that is placed inside. At this time, the ribs which are usually bent integrally with the formwork side plate are fixed to the stub by welding.

However, if the dance of the beam is large, the operator has to enter the narrow beam formwork to weld the ribs and the stub, there is a very difficult problem.

In order to solve the above problems, the present invention divides the formwork side plate up and down to be assembled into a side plate unit of a predetermined standard, and can be applied to beams of various heights, while lateral division type prefabricated lightweight assembly can maximize the production efficiency To provide a formwork.

The present invention is to provide a side-divided prefabricated lightweight formwork that can easily weld the rib formed on the formwork side plate to the stub to be placed inside.

The present invention according to a preferred embodiment is composed of a lower plate and a pair of side plates respectively provided on both sides of the lower plate for placing concrete therein, the side plate is horizontally inward from the top of the side plate, the side plate A plurality of side plate units consisting of an upper rib to be bent and horizontally bent inward from the lower end of the side plate is coupled to the upper rib of the lower side plate unit is configured by combining up and down, the end of the lower rib in the inner horizontal direction The horizontal extension portion is formed to extend, and the inner end portion of the horizontal extension portion is provided with a stub is inserted into the mold is inserted into the side plate divided type prefabricated lightweight form, characterized in that the insertion groove is fixed by welding. .

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According to another preferred embodiment of the present invention, the insertion groove provides a side plate split type prefabricated lightweight formwork, characterized in that extending to the upper rib side to fill the weld bead to a part of the upper rib upper surface of the lower side plate unit.

The present invention according to another preferred embodiment provides a side plate split type prefabricated lightweight formwork, characterized in that the end portion of the upper rib is formed to be bent downward to support the side of the stub is extended.

According to another exemplary embodiment of the present invention, a coupling groove portion is bent in a dovetail shape in the middle of one of the lower ribs and the upper rib, and the coupling is inserted into the coupling groove of the adjacent side plate unit in the middle of the other rib. It provides a side plate split type prefabricated lightweight formwork, characterized in that the engaging protrusion of the shape corresponding to the groove portion is bent.

The present invention according to another preferred embodiment is a side plate split type pre-assembled lightweight assembly characterized in that the riveting hole is formed in the coupling protrusion and the coupling groove portion is fixed by rivets in the coupling protrusion and the coupling groove portion is coupled to each other the upper and lower side plate units Provide formwork.

The present invention according to another preferred embodiment provides a side plate split type prefabricated lightweight formwork, characterized in that the bent-shaped side plate coupling portion is formed at both ends of the lower plate, the bottom of the side plate is coupled to the upper portion of the side plate coupling portion. do.

In accordance with another aspect of the present invention, a stub mounting portion is formed at the center of the lower plate to protrude, and the stub mounting portion is provided with a side groove split type prefabricated lightweight formwork, in which a mounting groove is formed to be inserted into the lower portion of the stirrup. To provide.

According to the present invention has the following effects.

First, a pair of side plates provided on both upper sides of the lower plate may provide a side plate split type prefabricated lightweight formwork formed by combining a plurality of side plate units up and down. Therefore, the height of the formwork can be easily adjusted by adjusting the number of side plate units according to the beam height, and the formwork efficiency is excellent because only a single or minimum type of side plate unit is used.

Second, if the side plate unit is composed of the side plate and the upper and lower ribs horizontally bent inward at the upper and lower ends of the side plate, the side plate unit can be reinforced by the upper and lower ribs, and the upper and lower side plate units can be easily combined, and the formwork is fixed to the stubrup. Easy to do

Third, by inserting the stub by forming an insertion groove in the horizontal extension formed into the inner side of the lower rib, it is possible to easily fix the stub and to secure a sufficient welding length to prevent the deformation of the formwork during formwork installation and concrete pouring.

Fourth, after mounting the stub on top of the lower plate of the formwork, the formwork can be manufactured upward while fixing the side plate unit from the lower to the upper side in order, the fixing work of the stub is easy.

1 is a view showing a conventional prefabricated lightweight formwork.
Figure 2 is a perspective view showing a side plate divided prefabricated lightweight formwork of the present invention.
Figure 3 is a cross-sectional view showing the present invention side plate split type prefabricated lightweight formwork.
4 is an enlarged view of a portion 'A' of FIG. 3.
5 is a perspective view showing an embodiment of the side plate unit.
Figure 6 is a perspective view showing a side plate divided pre-assembled lightweight formwork of the present invention coupled to the stub.
7 is a perspective view showing a coupling relationship between a side plate unit and a stub.
8 is a perspective view illustrating a state in which a side plate unit is coupled with a stub.
9 is a perspective view showing a sliding engagement relationship between the upper and lower side plate units.
10 is a perspective view showing an embodiment of a lower plate;

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.

Figure 2 is a perspective view showing the present invention side plate split type prefabricated lightweight formwork, Figure 3 is a cross-sectional view showing the present invention side plate split type prefabricated lightweight formwork, Figure 4 is an enlarged view of the 'A' part of FIG. to be.

As shown in Figure 2 to 4, etc., the side plate split type prefabricated lightweight formwork of the present invention is a pair of side plates respectively provided on both sides of the lower plate (1) and the lower plate (1) for placing concrete therein ( 2), the side plate (2) is characterized in that it is configured by combining a plurality of side plate units 20 up and down.

According to the present invention, the side plate 2 of the formwork is divided up and down to be assembled into a standardized side plate unit 20, which can be applied to beams of various heights, and can maximize production efficiency, and easily divide the side strips. Mold pre-assembly is to provide lightweight dies.

In the present invention, the side plate split type prefabricated lightweight formwork is configured by coupling a plurality of side plate units 20 up and down, respectively, by a pair of side plates 2 provided at both upper sides of the lower plate 1.

Therefore, the height of the pre-fabricated lightweight formwork can be adjusted by adjusting the number of side plate units 20 according to the height of the beam to be constructed.

In addition, since the use of a single or minimum type of side plate unit 20 is sufficient, the formwork efficiency is very excellent.

The lower plate 1 and each side plate unit 20 may be manufactured by processing a galvanized steel sheet by roll forming.

The pre-assembled lightweight formwork of the present invention is light in weight, easy to handle and install, and can be carried in and installed on-site in a pre-assembled state in a factory, thereby shortening air.

Furthermore, it can be used as a permanent demolition formwork to prevent noise complaints and to improve the on-site environment.

When the height of the side plate unit 20 is high, the reinforcing ribs 24 can be bent and reinforced in the middle (FIG. 5).

Figure 5 is a perspective view showing an embodiment of the side plate unit, Figure 6 is a perspective view showing the present invention side plate split type prefabricated lightweight formwork with a stub is coupled.

As shown in FIGS. 5 and 6, the side plate unit 20 includes a side plate 21, an upper rib 22 horizontally bent inward from an upper end of the side plate 21, and the side plate 21. It may be configured as a lower rib 23 is horizontally bent inward from the bottom of the lower rib 23 is coupled to the upper rib 22 of the lower side plate unit 20.

The side plate unit 20 may be formed such that the side plate 21, the upper rib 22, and the lower rib 23 form a U shape in cross section.

In this case, the upper and lower side plate units 20 may be coupled by welding, riveting, etc. in a state where the upper ribs 22 and the lower ribs 23 which are adjacent to each other are in contact with each other.

The upper ribs 22 and the lower ribs 23 not only combine the side plate units 20 adjacent to each other vertically, but also reinforce the rigidity of the side plate 2 and fix the formwork to the stub 3 (FIG. 6). Etc).

The upper rib 22 of the side plate unit 20 located at the top may be mounted with a deck plate 4 for slab construction (FIG. 3).

7 is a perspective view illustrating a coupling relationship between the side plate unit and the stub, and FIG. 8 is a perspective view illustrating a state in which the side plate unit is coupled with the stub.

As shown in FIGS. 5, 7, and 8, an end portion of the lower rib 23 is formed with a horizontal extension portion 231 extending in an inner horizontal direction, and an inner end portion of the horizontal extension portion 231. The stub 3 which is placed in the formwork is inserted so that the insertion groove 232 fixed by welding may be formed.

When the stub 3 is directly welded to the end of the lower rib 23, the stub 3 and the lower rib 23 meet at a point. Therefore, the space between the lower rib 23 and the stub 3 is less welded filling is difficult to be firmly fixed, there is a fear that this part is dropped when the formwork or concrete pouring, the deformation of the formwork.

Accordingly, the lower rib 23 is extended inward to form a horizontal extension part 231, and an insertion groove 232 is formed in the horizontal extension part 231 so that the stub 3 is inserted into the lower rib 23. The horizontal extension portion 231 of the circumference of the outer circumferential surface of the stub (3) can be configured so as to secure a sufficient welding length between the lower rib 23 and the stub (3).

In addition, it is possible to accurately fix the installation position of the stub (3) by the insertion groove (232). Accordingly, the fixing work of the stub 3 is very easy, and it is possible to prevent deformation of the formwork by securing stability during formwork installation and concrete pouring.

Conventional pre-assembly lightweight formwork was very difficult to weld the lower part of the stub (3) and the welding of the side plate (2) when the dance of the beam is large.

However, in the present invention, the side plate 2 is divided into a plurality of side plate units 20 so as to mount the stub 3 on the upper side of the lower plate 1 of the formwork as shown in FIG. 8, and from the lower side plate unit 20 to the upper side. Formwork can be manufactured upward while fixing the side plate unit 20 to the stub 3 in order up to the side plate unit 20. Therefore, the fixing operation of the stub 3 can be made very easily.

As illustrated in FIG. 7, the insertion groove 232 may extend toward the upper rib 22 so that the welding bead is filled up to a part of the upper surface of the upper rib 22 of the lower side plate unit 20.

The present invention is configured to combine the plurality of side plate units 20 by dividing the side plate 2 up and down, so that each side plate unit 20 must be joined by welding or the like, and the stirrup 3 is separately separated from the side plate unit 20. ) To the ribs.

In this case, there are many welding spots, which takes a lot of effort and time to manufacture and construct.

Accordingly, when the stub 3 is welded and fixed to the lower rib 23, the insertion groove 232 is extended to the upper rib 22 side of the lower side plate unit 20 so that the upper and lower side plate units 20 may be fixed at the same time. can do.

Accordingly, the lower ribs 23 and the upper ribs 22 of the lower side plate unit 20 are also simultaneously formed by a welding rod filled in the insertion grooves 232 to fix the stub 3 to the lower ribs 23. Can be fixed

At this time, the upper rib 22 of the lower side plate unit 20 to be bonded to the lower rib 23 is preferably formed to be in close contact with the side of the stub (3).

As shown in FIG. 5, FIG. 7, etc., an end portion of the upper rib 22 may be bent downward to extend the support part 221 supporting the side surface of the stub 3.

When the side plate unit 20 is manufactured using a thin plate, deformation of the upper rib 22 may occur due to an external force when an end portion of the upper rib 22 directly contacts the stub 3. In this case, the welding area is not properly secured during welding for coupling the upper and lower ribs 22 and 23.

Therefore, by bending the end of the upper rib 22 to form a support portion 221 can be configured to reinforce the rigidity of the upper rib 22, and to firmly support the stub (3).

In addition, by bending the end of the upper rib 22 to reinforce rigidity, there is an effect that the overall rigidity of the formwork is increased.

9 is a perspective view illustrating a sliding engagement relationship between the upper and lower side plate units.

As shown in FIG. 4, FIG. 5, and FIG. 7, the coupling groove 222 is bent to a dovetail shape in the middle of one of the lower ribs 23 and the upper ribs 22, and the other side thereof. In the middle of the rib 23 may be configured to be bent to form a coupling protrusion 233 of the shape corresponding to the coupling groove 222 so as to be inserted into the coupling groove 222 of the adjacent side plate unit 20.

When manufacturing the present invention pre-fabricated lightweight formwork, the coupling groove 222 and the coupling protrusion 233 to form the coupling groove 222 and the coupling protrusion 233 to fix the position of the side plate unit 20 until the upper and lower side plate unit 20 is fixed by welding can be mutually coupled have.

At this time, the coupling groove 222 and the coupling protrusion 233 is formed in a cross-sectional dovetail shape, so that the coupling protrusion 233 inserted into the coupling groove 222 is not separated.

The coupling protrusion 233 may be coupled to the coupling groove 222 by an interference fit method by using the elastic force of the thin plate, or may be coupled to each other by sliding the upper and lower side plate units 20 at their ends as shown in FIG. 9.

The coupling protrusion 233 and the coupling groove 222 is formed by bending the upper and lower ribs 22 and 23, thereby reinforcing the rigidity of the upper and lower ribs 22 and 23.

On the other hand, as shown in Figure 3, the deck plate 4 in the engaging protrusion 233, or the coupling groove 222 formed on the upper rib 22 of the upper side plate unit 20 on which the deck plate 4 is mounted The lower end of the vertical bar 42 is installed in front of the truss girder 41 to support the truss girder 41 can be inserted.

Accordingly, the position of the deck plate 4 may be stably fixed by the coupling protrusion 233 or the coupling groove 222.

As shown in FIG. 4, the riveting holes are formed in the coupling protrusion 233 and the coupling groove 222 to rivet the coupling protrusion 233 and the coupling groove 222 to which the upper and lower side plate units 20 are coupled to each other. It can be configured to be fixed by (25).

Since the coupling protrusion 233 and the coupling groove 222 formed in the dovetail shape temporarily fix the upper and lower ribs 22 and 23, the coupling protrusion 233 and the coupling groove 222 may fall out during vertical action.

In addition, even when the upper and lower ribs 22 and 23 are weld-bonded, if a vertical force acts on the side plate 21 side, the end portion of the side plate 21 side of the rib may be opened up and down.

Accordingly, by forming rivet holes in the coupling protrusion 233 and the coupling groove 222, the coupling protrusion 233 and the coupling groove 222 can be firmly fixed by the rivet 25 construction.

Accordingly, the upper and lower ribs are fixed by the fixing by the welding in the insertion groove 232 of the lower rib 23 and the coupling groove 222 and the coupling protrusion 233 by the rivet 25, that is, the two points fixing ( Since 22 and 23 can be joined together, opening of these members can be prevented by the firm fixation of the upper and lower ribs 22 and 23. FIG.

10 is a perspective view illustrating an embodiment of a lower plate.

As shown in FIG. 10, an L-shaped side plate coupling part 11 is bent at both ends of the lower plate 1, and a lower end of the side plate 2 is coupled to an upper portion of the side plate coupling part 11. Can be configured.

In this case, since the junction of the lower plate 1 and the side plate 2 is located on the side of the formwork instead of the lower portion of the formwork, welding of the lower plate 1 and the side plate 2 is easy when forming the formwork.

The side plate coupling portion 11 is vertically bent upwardly at each end of the lower plate 1 and then vertically bent inward to form an overall L-shape.

The side plate coupling part 11 is coupled to the lower rib 23 of the lowermost side plate unit 20.

A coupling groove 112 may be formed on an upper surface of the side plate coupling part 11, and in this case, a coupling protrusion 233 formed on the lower rib 23 is inserted into the coupling groove 112 of the side plate coupling part 11. Can be configured to hang.

A support part 111 vertically bent downward may be formed on the inner end of the side plate coupling part 11 to support the side surface of the stub 3.

The lower plate 1 may be manufactured in a pair of lower plate units 10 that are identical to each other by dividing left and right in cross section.

As shown in FIG. 10 and the like, a stub holder 12 is protruded from the center of the lower plate 1, and a mounting groove 121 into which the lower portion of the stub 3 is inserted into the stub holder 12 is mounted. ) May be formed.

In order to stably mount the stirrup 3 in the correct position, the stirrup mounting part 12 may be protruded from the center of the lower plate 1.

In this case, the stirrup holder 12 is formed with a plurality of mounting grooves 121 to each predetermined depth.

The stub 3 may be fixed to a mounting groove 121 of any one of the plurality of mounting grooves 121.

Accordingly, even when the stirrup 3 is pre-assembled in a lightweight formwork at the factory, the stirrup 3 may not be detached during transportation or installation, and thus the correct position may be maintained.

The upper end of the stub mounting portion 12 is formed with the mounting groove 121 may be formed to be a U-shaped (or c-shaped open top).

When the lower plate 1 is divided into left and right and constituted by a pair of lower plate units 10, a stub holder 12 is formed at an inner end of each lower plate unit 10, and the stub holder 12 of the stub holder 12 is formed. Rivet holes (not shown) may be formed in the lower portion.

In this case, both side lower plate units 10 can be fixed with the rivets 25 in a state where the lower portion of the stirrup holder 12 is facing.

In addition, the top of the stub mounting portion 12, the mounting groove 121 is formed may be formed in each of the mounting grooves 121 in the lower plate unit 10 on both sides to be a U-shaped (or open upper c-shaped).

1: bottom plate 10: bottom plate unit
11: side plate engaging portion 111: support portion
112: coupling groove 12: stirrup mounting portion
121: mounting groove 2: side plate
20: side plate unit 21: side plate
22: upper rib 221: support portion
222: coupling groove 23: lower rib
231: horizontal extension portion 232: insertion groove
233: engaging protrusion 24: reinforcing rib
25: Rivet 3: Stirrup
4: Deckplate 41: Truss Girder
42: vertical bar W: welding

Claims (9)

Consists of a pair of side plates (2) which are respectively provided on both sides of the lower plate (1) and the lower plate (1) for placing concrete therein,
The side plate 2 is a side plate 21, the upper rib 22 is horizontally bent inward from the top of the side plate 21 and horizontally bent inward from the bottom of the side plate 21 lower side plate unit ( Composed up and down a plurality of side plate units 20 consisting of a lower rib 23 coupled to the upper rib 22 of the 20,
At the end of the lower rib 23 is formed a horizontal extension portion 231 extending in the inner horizontal direction, the inner end of the horizontal extension 231 is inserted into the stub (3) is inserted into the mold and welded Side plate split type pre-assembly lightweight formwork, characterized in that the insertion groove 232 is fixed by the formation.
delete delete In claim 1,
The insertion groove 232 is a side plate split type prefabricated lightweight formwork, characterized in that extending to the upper rib 22 side to fill the weld bead to the upper portion of the upper rib 22 of the lower side plate unit 20.
In claim 4,
Side plate split type prefabricated lightweight formwork, characterized in that the end portion of the upper rib 22 is bent downward to extend the support portion 221 to support the side of the stub (3).
In claim 1,
A coupling groove 222 is bent in a dovetail shape in the middle of any one of the lower ribs 23 and the upper ribs 22, and the adjacent side plate unit 20 is formed in the middle of the other ribs 23. Side plate split type prefabricated lightweight formwork, characterized in that the coupling protrusion 233 of the shape corresponding to the coupling groove 222 is formed to be inserted into the coupling groove 222 of the bent.
In claim 6,
Rivet holes are formed in the coupling protrusion 233 and the coupling groove 222 so that the upper and lower side plate units 20 are fixed by the rivet 25 in the coupling protrusion 233 and the coupling groove 222. Side plate split type prefabricated lightweight formwork.
In claim 1,
A side plate split line is formed at both ends of the lower plate 1 by forming a bent-shaped side plate coupling part 11 and a lower end of the side plate 2 is coupled to an upper portion of the side plate coupling part 11. Assemble lightweight formwork.
In claim 1,
In the center of the lower plate 1, the stub mounting portion 12 is formed to protrude, the stirrup mounting portion 12 is characterized in that the mounting groove 121 is inserted into the bottom of the stirrup 3 is formed Lightweight formwork with side plate split type assembly.

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