KR20180040285A - Formwork structure for concrete pillars - Google Patents

Abstract

The present invention relates to a form for forming a concrete pillar (C) of a building. The form comprises: forming plates (10, 20) formed in a semicircular shape to match an outer diameter of a pillar (C) by using wooden plywood, and coupled to be meshed with each other to form a circular form; and coupling means (40, 50) coupled to each other to enclose outer circumferential surfaces of the forming plates (10, 20) to prevent separation, and used by selecting at least one thereof or mixing all thereof. One or more protrusions (11, 21) and grooves (12, 22) of intaglio and embossment capable of meshing and coming in contact with each other are formed on at least one surface of the forming plates (10, 20). Lengths of the forming plates (10, 20) are differently formed and the forming plates (10, 20) are connected to each other in zigzags to be coupled to each other by the coupling means. In a product by improving a form structure of pouring a pillar of a building, the form is sturdy and is not deformed to have excellent strength, durability and stiffness to cure a precise concrete pillar. The form can be reused to promote economic efficiency. Installation and removal are quick and convenient in construction to improve constructability, workability and efficiency and shorten a construction period since additional finishing work is not required.

Description

[0001] The present invention relates to a concrete structure for concrete pillars,

The present invention relates to a concrete formwork structure for piling a column of a building, and more particularly, to an improvement of a formwork structure in which a column of a building is laid, the formwork is robust and is not deformed so that it is excellent in strength, durability and rigidity The present invention relates to a concrete structure for a concrete column capable of curing a precise concrete column and reusing the same, thereby improving the productivity, speeding up and simplifying installation and disassembly in construction and improving workability, workability and efficiency, will be.

Typically, the form refers to a structure temporarily installed to make a concrete structure into a predetermined shape and dimensions. When a building or structure is constructed, a formwork of a predetermined shape is installed on a column, a floor or a wall, And reinforcing bars are cured and then cured to obtain a desired shape. Particularly, in the case of a column formwork applied to a building or a bridge pier, conventionally, the column is formed of a square cross-section. However, this is because the cylindrical column is more excellent in comparison of the aesthetic side and space, It is mainly made of cylindrical columns.

The cylindrical mold used to manufacture such a cylindrical column was mostly made of wood plywood, steel plate, plastic plate or the like, but it was disadvantageous in that it was expensive to manufacture the formwork and it was not easy to produce it in the form of a garden type. Moreover, it is not easy to remove the concrete after curing and reuse because the diameter of the mold for the column is different according to the building use of the building. Therefore, it is disadvantageous from the environmental viewpoint due to disposal, And reuse is not easy. In addition, when the diameter of a column applied to buildings, bridges, piers, etc. is large, it is not easy to transport and move relative to the size of a column for a column, and the weight is also increased depending on the size, There was a disadvantage in terms of safety in the field.

Recently, studies on formwork applied to cylindrical columns such as buildings, structures, bridges and piers have been actively researched. As related prior art documents, there are disclosed Korean Patent Publication No. 1992-0016680 (Prior Art 1), Korean Patent Laid-Open Publication No. 2001-0102424 (Prior Art 2), Korean Registered Utility Model No. 20-0446475 Reference 3).

The prior art document 1 has a synthetic resin plate portion having a shape of a circular arc plate having a required height, radius of curvature and central angle; A frame reinforcement portion attached and fixed to one side edge portion of the synthetic resin plate portion by fixing means; And an intermediate stiffener portion which is disposed at a predetermined interval between the frame stiffener portions and is attached and fixed to the synthetic resin plate portion by fixing means.

However, the above-mentioned prior art document 1 has an advantage in that the form panel can be recycled, but it is disadvantageous in that it is not cost effective because it is made of synthetic resin and is expensive.

In the prior art document 2, the width of the rigid plates constituting the annular body is reduced as the degree of proximity of the form to a perfect cylindrical shape is further reduced, and the envelope made of a glass fiber mesh spirally wound on the annular body, Characterized in that the annular body houses therein a self-adhesive film which continuously covers the entire inner surface of all the laminates in order to form a mold with a suitable rigidity Discloses a mold for a cylindrical column.

However, in the above-mentioned prior art document 2, since the manufacturing process of the formwork is complicated and the manufacturing cost is high and the shape thereof is formed into a polygonal shape rather than a circular shape, a large number of grooves must be formed in order to mold it close to a circular shape, .

Prior Art 3 includes a columnar peripheral surface forming portion having an arc-shaped inner peripheral surface divided into two to four parts on the outer peripheral surface of a column to be subjected to construction; A flow foaming unit formed on the outside of the pillar outer peripheral surface forming unit and having a flow foil adhered to the outside thereof; A wing portion protruding outwardly at a boundary between the column outer circumferential surface forming portion and the euro foam fastening portion and closely contacting the left and right euro foam forming frames; And a plurality of auxiliary die units made of a synthetic resin material are brought into contact with each other to have a polygonal outer circumferential surface shape. The auxiliary die for constructing a circular or elliptical concrete column is disclosed.

However, according to the prior art document 3, since the auxiliary formwork and the Euroform are coupled to each other, it takes a long time to install or dismantle the whole formwork of the cylindrical column, thus requiring a long period of time for construction and installation and disassembly. There is a disadvantage that it is difficult to stack and store because the thickness of the entire die is increased by filling the packing made of another EPS in order to reinforce durability.

Korean Unexamined Patent Application Publication No. 1992-0016680 entitled "Formwork Panel for Underground Structures" (Published on Mar. 25, 1992) Korean Patent Laid-Open Publication No. 2001-0102424 entitled "Form for a cylindrical column" (published on Nov. 15, 2001) Korean Registered Utility Model No. 20-0446475 entitled "Auxiliary Formwork for Construction of Circular or Oval Concrete Columns" (Registered on Oct. 26, 2009)

It is an object of the present invention to fundamentally improve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a concrete concrete pillar which is excellent in strength, durability and rigidity, The present invention provides a concrete structure for a concrete column that can be cured and can be reused and is economical, and can be quickly and easily installed and disassembled to increase workability, workability, efficiency, and shorten a construction period.

In order to accomplish the above object, the present invention provides a molding for molding a concrete column of a building, comprising: a semi-circular mold which is made to conform to the outer diameter of the column using wood plywood, plate; And fastening means for fastening the outer peripheral surface of the forming plate to each other to prevent the outer peripheral surface from being wrapped and separated, and to use at least one of them in a selective or mixed manner.

According to the present invention, the forming plate is characterized by applying a waterproof coating layer for protecting the surface from concrete.

According to the present invention, the shaping plate is provided with at least one projection on at least one surface thereof, and a protruding portion and a groove portion of the recessed portion capable of engaging with each other are formed. The shaping plate is interconnected in a staggered arrangement, And are mutually coupled.

According to an embodiment of the present invention, the fastening means includes a fastening band made of a metal plate material so as to surround the outer circumferential surface of the forming plate, a fastening portion having fastening holes and fastening holes bent at both ends of the fastening band, And a fastening bolt having a nut for press-fastening the fastening band through the press-fastening block and the fastening portion.

According to another embodiment of the present invention, the fastening means includes a fastening band made of a metal plate so as to surround the outer circumferential surface of the molded plate, a fastening band bent at both ends of the fastening band, And a plug having a tightening nut so that the slider can be moved forward and backward while accommodating the other fastening base.

It should be understood, however, that the terminology or words of the present specification and claims should not be construed in an ordinary sense or in a dictionary, and that the inventors shall not be limited to the concept of a term It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be properly defined. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It is to be understood that equivalents and modifications are possible.

As described above, the concrete formwork for concrete columns according to the present invention has excellent strength, durability and rigidity because the formwork is robust and not deformed in the product due to the improvement of the structure. Therefore, it is possible to cure concrete concrete columns, And it is possible to increase the workability, workability and efficiency by quick and easy installation and disassembly in construction, and to provide an effect that the construction period can be shortened because no additional finishing work is required.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 and Fig. 2 are structural diagrams showing a formwork structure according to a first embodiment of the present invention and modifications thereof. Fig.
FIG. 3 and FIG. 4 are diagrams showing a mold structure according to a second embodiment of the present invention; FIG.
6 is a configuration diagram showing a modified example of a formwork structure according to an embodiment of the present invention;

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

The present invention relates to a formwork for molding a concrete column (C) of a building, in particular, it is excellent in strength, durability and rigidity of a form, and can be reused and can be quickly and easily installed and dismantled, And the construction time is shortened because no additional finishing work is required.

While the present invention has been shown and described with reference to certain embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the scope of the invention as defined in the appended claims. That is, it may be formed in an elliptical shape or a rectangular shape close to a circular shape within the range where the construction of the present invention is not adversely affected as necessary.

According to the present invention, the mold plates 10 and 20, which are formed in a semicircular shape so as to coincide with the outer diameter of the column using the wood plywood, are engaged with each other to form a circular mold. The molding plates 10 and 20 are made of wood plywood and coincide with the outer diameter of the concrete column C of the building. In other words, the molding plates 10 and 20 are formed as the outer diameter of the concrete column C As shown in Fig. The molded boards 10 and 20 are formed by bending a wooden plywood. The wood plywood used herein includes a particle board PB and a medium density fiberboard (MDF). However, the present invention is not limited to this, It is possible to use any method.

The forming plates 10 and 20 are engaged with each other to form a circular mold, and the interlocking structure will be described later in detail.

According to the detailed construction of the present invention, the molding plates 10 and 20 are characterized by coating a waterproof coating layer 30 for protecting the surface from concrete. After the molding plates 10 and 20 are formed, a waterproof coating layer 30 is applied to the surface to protect them from concrete. By forming the waterproof coating layer 30 on the surface of the molding plates 10 and 20, damage to the concrete due to corrosion by moisture can be minimized. It is preferable that the waterproof coating layer 30 is formed by coating the surface of the waterproof coating layer 30 with a certain thickness using a water-resistant liquid. In addition, various methods for forming the waterproof coating layer 30 are possible, and a method of attaching a film or sheet or the like is also possible.

In this case, according to the detailed construction of the present invention, the molding plates 10 and 20 are provided with at least one or more protrusions 11 and 21 and grooves 12 and 22, which are mutually engageable with each other, And they are mutually connected in a staggered arrangement while forming their lengths differently from each other in the molding plates 10 and 20, and they are mutually coupled by fastening means. The molding plates 10 and 20 form the recessed portions 11 and 21 and the recessed portions 12 and 22 to form a circular mold when they are formed by using wood plywood. The protrusions 11 and 21 and the grooves 12 and 22 have at least one surface on at least one side so as to prevent them from being detached from each other while being engaged with each other and to prevent the concrete from flowing out to the outside.

The protrusions 11 and 21 and the grooves 12 and 22 are formed on one surface of the molding plates 10 and 20 and are coupled with each other in an engaging manner as shown in Figs. Are formed in three surfaces of the plates (10) and (20), that is, in the vertical direction as well as in the mutually corresponding directions, and are joined by mutual engagement.

That is, the protrusions 11 and 21 and the grooves 12 and 22 are formed to correspond to each other so that the molding plates 10 and 20 are in mutual meshing contact, and their sizes and shapes are formed to correspond to each other. As shown in FIG. 4, the molding plates 10 and 20 have the protruding portions 11 and 21 and the groove portions 12 and 22 formed on three surfaces for mutually connecting in a zigzag arrangement while forming different lengths, And the side surfaces are prevented from being separated from each other by being engaged with each other while preventing the concrete from flowing out to the outside.

According to the present invention, at least one of the fastening means (40) (50) for fastening the molding plates (10) (20) to each other to prevent separation and separation of the outer circumferential surfaces of the molding plates (10) The fastening means 40 and 50 serve to prevent the molded plates 10 and 20, which are engaged with each other in mutual meshing contact as shown in Figs. 2 and 5, from being separated. These fastening means (40) (50) are wrapped around the outer peripheral surface of the plates (10) (20) so as to be mutually fastened in order to prevent them from being separated from each other. These fastening means 40 and 50 are realized in two ways, and at least one or more of them can be used as shown in Figs. 1 and 4, or they can be used in combination as shown in Fig. The structure of the fastening means 40 (50) will be described later in detail.

The fastening means 40 according to an embodiment of the present invention includes a fastening band 41 made of a metal plate so as to enclose the outer circumferential surface of the forming plates 10 and 20, A pressurizing block 45 having a through hole 45a which is interposed in the concave groove 43a of the concave portion 43 and presses the concave portion 43a, the pressurizing block 45 having the concave groove 43a and the concave hole 43b, And a fastening bolt (47) having a nut (48) to penetrate through the block (45) and the fastening part (43) to press fasten the fastening band (41). The fastening means 40 is constituted by a fastening band 41, a fastening portion 43, a pressing block 45 and a fastening bolt 47 as shown in Figs. The fastening bands 41 are formed so as to surround the outer circumferential surface of the forming plates 10 and 20 which are in mutual meshing engagement with each other using a metal plate. The binding portion 43 includes both a concave groove 43a and a fastening hole 43b by bending both ends of the fastening band 41. [ The press block 45 is provided with a through hole 45 while interposed in the concave groove 43a of the fastening band 41. On the other hand, the pressing block 45 is shown as being separated from the fastening band 41 as shown in the drawing, but it may be formed integrally with the fastening band 41 of the fastening band 41. The fastening bolt 47 is screwed into the fastening block 45 and the fastening part 43 and screwed to the nut 48 so that the fastening band 41 presses the molding plate 10 and 20 while pressing the fastening band 41, So that the combined state can be maintained.

The fastening means 50 according to another embodiment of the present invention includes a fastening band 51 made of a metal plate to wrap the outer circumferential surface of the forming plates 10 and 20, The slider 55 is moved back and forth in a state in which the slider 55 having the fastening bolt 54 and the other fastening base 53 are accommodated so as to be able to move while receiving the fastening base 53 on one side, And a plug (57) with a tightening nut (56). The fastening means 50 is composed of a fastening band 51, a cradle 53, a slider 55 and a plug 57 as shown in Figs. The fastening bands 51 are formed so as to surround the outer circumferential surfaces of the forming plates 10 and 20 which are in mutual meshing engagement by using the same metal plate as the fastening bands 41 of the fastening means 40 described above. The fastening band 53 is positioned at both ends of the fastening band 51 and then subjected to a banding treatment. The fastening band 53 is not detached from both ends of the fastening band 51, And operate in unison with each other.

The slider 55 receives the fastening base 53 on one side and mounts the fastening bolt 54 forward. The slider 55 is connected to a plug 57 to be described later and is movable forward and backward. Like the slider 55, the plug 57 receives the other cradle 53 and is screwed to the cradle bolt 54 with a tightening nut 56 in the rear direction. The clamping band 51 is pressed by the movement of the slider 55 from the plug 57 by the urging of the tightening nut 56 on the clamping bolt 54 to press the clamping plate 10 and 20 while covering the clamping band 51 So that a firmly coupled state can be maintained.

1 to 6, in the construction of a concrete column for a concrete column, firstly, a reinforcing bar and concrete are placed on a floor surface after completion of curing and curing in order to construct a concrete column C of a building, ) 20 are interconnected and stacked vertically in a zigzag arrangement in an intermeshing contact. This is accomplished quickly and easily by the protrusions 11 and 21 and the grooves 12 and 22 of the molding plates 10 and 20.

Next, the outer circumferential surface of the molding plates 10 and 20 are selected so as to be fastened to each other in order to prevent them from being separated from each other. 2, the fastening means 40 can be fastened to the pressing block 45 by fastening bolts 47 while the fastening bands 41 are wrapped around the forming plates 10 and 20, And tightly coupled with the nut 48 through the fastening part 43 and the fastening part 43 to tightly press the fastening band 41 while pressing the fastening band 41 to keep the fastened state, Efficiency is increased.

Of course, it is also possible to use the fastening means 40 (50) at the same time as shown in FIG.

When concrete is cured and the concrete column C is formed, the fastening bolts 47 and the nuts 48 are separated from each other and the molding plates 10 and 20 are separated from each other, Will be completed. Therefore, not only the mold dismantling operation can be performed quickly and easily, but also the molding plates 10 and 20 can be reused and economical efficiency is achieved.

In addition, not only the inner surface is smooth due to the waterproof coating layer 30 of the molding plates 10 and 20 but also the molding is prevented from being damaged by moisture during the concrete casting process, It is excellent in strength, durability and durability so that precise concrete columns can be cured and the construction period can be shortened because no additional finishing work is required.

As described above, according to the present invention, since the formwork is firmly deformed by the improvement of the formwork structure piling the column of the building, the concrete is excellent in strength, durability and rigidity so that the concrete column can be cured and reusable. And installation and disassembly in the construction is quick and simple, so that the workability, workability and efficiency are increased, and the construction period can be shortened because no additional finishing work is required.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is therefore intended that such variations and modifications fall within the scope of the appended claims.

10, 20: forming plate 11, 21:
12, 22: groove portion 30: waterproof coating layer
40, 50: fastening means 41, 51: fastening band
43: Bonding portion 45: Pressing block
47: fastening bolt 53: cradle
55: Slider 57: Plug
C: Concrete column (column)

Claims (5)

A mold for forming a concrete column (C) of a building comprising:
A molding plate (10) (20) formed in a semicircular shape so as to coincide with the outer diameter of the column (C) by using a wood plywood, and mutually engaged to form a circular mold; And
And fastening means (40) (50) for fastening the outer periphery of the molding plates (10) and (20) to each other to prevent separation and separation, Formwork for columns. The method according to claim 1,
Wherein the forming plates (10) and (20) are coated with a waterproof coating layer (30) for protecting the surface from concrete. The method according to claim 1,
The molding plates 10 and 20 each have one or more protrusions 11 and 21 and grooves 12 and 22 formed on at least one surface thereof and capable of mutually engaging with each other, 20) are connected to each other in a zigzag arrangement and are coupled to each other by fastening means. The method according to claim 1,
The fastening means 40 includes a fastening band 41 made of a metal plate so as to enclose the outer circumferential surface of the molding plates 10 and 20, a fitting groove 43a bent at both ends of the fastening band 41, A pressing block 45 having a through hole 45a for pressing the binding portion 43 interposed in the concave groove 43a of the binding portion 43, a pressing block 45 having a through hole 45a for pressing the binding portion 43, And a fastening bolt (47) having a nut (48) to penetrate the fastening part (43) and press fasten the fastening band (41). The method according to claim 1,
The fastening means 50 includes a fastening band 51 made of a metal plate so as to wrap the outer circumferential surface of the molding plates 10 and 20, a fastening band 53 bent at both ends of the fastening band 51, A slider 55 having a fastening bolt 54 and a fastening nut 56 are provided so as to be movable back and forth while accommodating the other fastening base 53 so as to be able to move while receiving the fastening base 53 And a plug (57) having a plurality of projections (57).

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