KR101910141B1 - Hollow slab deck plate adopting foaming pouch and method for constructing slab using the same - Google Patents

Abstract

The present invention relates to a base plate (10); A truss reinforcing bar 20 provided on the base plate 10; And a foam pouch (100) formed of a flexible material so as to be installed between the truss reinforcing bars (20) and having a filling space (S) formed therein. The foam pouch (100) And a foaming initiation member (200) for forming a foam filling the filling space (S), and a method for constructing a slab using the deck plate for hollow slab.

Description

[0001] The present invention relates to a hollow slab deck plate having a foam pouch and a hollow slab deck plate using the same,

The present invention relates to a deck plate for a hollow slab and a slab construction method using the deck plate. More particularly, the present invention relates to a deck plate capable of quickly and easily constructing a hollow slab at a construction site using a foam pouch and a slab construction method using the same .

Since the slab corresponding to the floor or ceiling structure of a building is exposed to a vertical load, a structure capable of effectively resisting such a vertical load and reducing its own weight is required.

In recent years, studies on various self - weight reduction type slab construction methods have progressed actively due to high - rise and long - length construction of buildings. Among them, hollow slab system is known as a system capable of efficiently reducing its own weight while minimizing deterioration of structural performance.

Korean Patent Laid-Open Publication No. 10-2015-0071957 discloses an anti-buoyancy type module for a hollow slab, which allows a lightweight molding material to be fixed to the buoyancy by concrete when the concrete is laid, while reinforcing the slab to form a hollow slab of a long span Lt; / RTI > According to this document, there is provided an anti-buoyancy-type module in which a buoyancy-preventing reinforcing bar is integrally joined to an upper portion of a truss reinforcing bar so that the lightweight molding material can be fixed, and the truss reinforcing bar and the lightening-

Korean Patent Registration No. 0643844 discloses a half slab having a hollow structure in which a plurality of hollow members made of a styrofoam foam are vertically arranged on the top surface of a bottom plate of a deck plate and concrete is placed thereon to produce a slab Construction method "

However, the above-mentioned conventional techniques employ a lightweight molding material or a hollow material as the hollow structure. These materials are manufactured in advance in a specific shape or various shapes by using plastic materials such as styrofoam or polyethylene, And the size thereof is set to such a degree that the concrete pouring can be reduced within a range not lowering the slab strength.

However, the lightweight molding material or the hollow material is usually fixed in a truss reinforcing bar or a structure forming a deck plate at a building site after being manufactured in advance in a factory. Therefore, since the solid material already produced in a specific shape occupies a considerable volume, it is not easy to transfer them in large quantities to the construction site, and at the time of construction, the lower reinforcing bar, the upper reinforcing bar or the connecting reinforcing bar It is disadvantageous in terms of transportation, handling, and construction.

KR 10-2015-0071957 A KR10- 0643844 B1

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a pouch capable of constructing a hollow slab by expanding a pouch by foaming a foam composition on the site, And a method of constructing a slab using the deck plate for a hollow slab.

According to an aspect of the present invention, there is provided a hollow slab deck plate comprising: a base plate; A truss reinforcing bar provided on the base plate; And a foam pouch formed of a flexible material so as to be installed between the truss reinforcing bars and having a filling space formed therein, wherein the foam pouch forms a foam filling the filling space by external force And a foaming initiation member.

According to an embodiment of the present invention, the foam initiation member may include: a first compartment containing a foaming agent therein; A second compartment containing a foamable material therein; A separation membrane formed between the first compartment and the second compartment; And a trigger member extending at least partially to the outside of the foam pouch and configured to open an opening formed in the separation membrane by an external force.

According to another embodiment of the present invention, the foam initiation member includes: a first compartment containing a foaming agent therein; A second compartment containing a foamable material therein; And a trigger member that extends at least partially to the outside of the foam pouch and isolates the first compartment and the second compartment from each other and at least part of which is detached by an external force.

According to another embodiment of the present invention, the foam initiation member includes: a first compartment containing a foaming agent therein; A second compartment containing a foamable material therein; And a trigger member configured to isolate the first compartment and the second compartment from each other and to communicate the first compartment and the second compartment with at least part of the compartment ruptured by an external force.

According to another aspect of the present invention, there is provided a method of constructing a slab, comprising: a base plate; a truss reinforcing bar provided on the base plate; and a foaming material having a foaming initiation member formed of a flexible material to be installed between the truss reinforcing bars Installing a detent plate including a pouch; Filling the inner filling space of the foam pouch by expanding the foam by starting an expansion action of the foam initiation member by an external force to form a foam; And pouring and curing the concrete on the upper surface of the deck plate in the expanded state of the foam pouch.

According to the deck plate for a hollow slab having the foam pouch of the present invention and the slab construction method using the same, the pouch containing the foam composition is installed in the deck plate for slab building, and the foam composition is immediately Since the hollow slab is formed by expanding the pouch to a desired volume by foaming, it is very easy to construct the slab compared with the conventional technique in which a solid type material, which is previously prepared in a desired volume, is installed.

Particularly, the foam pouch according to the present invention is made of a flexible material, and its volume is very small before the inside composition is foamed, so that it is very convenient to carry and handle the foam pouch up to the construction site.

Also, since the pouch can be easily installed in the deck plate structure before the pouch is expanded by foaming, it is possible to adaptively cope with the slab expansion or the structural change according to the design.

Advantages and advantages of the present invention will become more apparent from the following detailed description.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.
1 is a perspective view showing a schematic configuration of a deck plate for a hollow slab according to any one of the various embodiments of the present invention.
2 is a partial cross-sectional view showing a schematic configuration of a deck plate for a hollow slab according to any one of the various embodiments of the present invention, and shows a state in which a foam pouch is installed.
3 is a cross-sectional view showing a schematic configuration of a foam pouch installed on a deck plate for a hollow slab according to any one of the various embodiments of the present invention.
4 is a cross-sectional view showing a schematic configuration of a foam starting member in a foam pouch installed in a deck plate for a hollow slab according to any one of the various embodiments of the present invention.
5 is a cross-sectional view showing a schematic configuration of a foam starting member in a foam pouch installed in a deck plate for a hollow slab according to still another embodiment of the present invention.
6 is a cross-sectional view showing a schematic configuration of a foam initiation member in a foam pouch installed in a deck plate for a hollow slab according to another embodiment of the various embodiments of the present invention.
7 is a schematic view showing a state in which a foam pouch is expanded by the start of foaming of a foam starting member in a deck plate for a hollow slab according to any one of the various embodiments of the present invention.
8 is a flowchart illustrating a slab construction method using a hollow slab deck plate according to various embodiments of the present invention.
9 is a view for explaining a slab construction method using a hollow slab deck plate according to any one of the various embodiments of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a deck plate for a hollow slab having a foam pouch and a slab construction method using the same according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the expression " foaming initiation " used in the present specification means that the foaming agent and the foamable substance are kept separated from each other and contact each other by an external force, . Further, in the drawings attached to the present specification, the same reference numerals denote the same components.

FIG. 1 is a perspective view showing a schematic configuration of a deck plate for a hollow slab according to any one of the various embodiments of the present invention, and FIG. 2 is a perspective view showing a deck for a hollow slab according to any one of the various embodiments of the present invention. Sectional view showing a schematic configuration of the plate, showing a state in which the foam pouch is installed.

Referring to the drawings, the hollow plate for a hollow slab according to an embodiment of the present invention includes a base plate 10, a truss reinforcing bar 20 provided on the base plate 10, And a foam pouch 100 to be installed.

More specifically, a plurality of lower truss reinforcing bars 22 are arranged at predetermined intervals on the base plate 10, and a plurality of upper truss reinforcing bars 24 and 26 are arranged on the upper portion of the base truss reinforcing bars 22, And the lower truss reinforcing bars 22 and the upper truss reinforcing bars 24 and 26 are connected to each other by a connecting reinforcing bar 28 to form a truss structure.

In the present embodiment, the lower truss reinforcing bars 22 are arranged in the longitudinal direction and the upper truss reinforcing bars 24 and 26 are arranged in the longitudinal direction or the transverse direction, but this is merely an exemplary embodiment, It should be understood that the structures of the upper and lower truss rods, such as the number, direction, and arrangement, are not limited by the present invention, and that various types of truss reinforcing structure shapes known in the art can be applied to the present invention.

Between the truss reinforcing bars 20, a foam pouch 100 is installed. As shown in FIG. 1, the foam pouches 100 may be installed in a plurality of spaces between the truss reinforcing bars 20, and may be disposed at predetermined intervals in the longitudinal direction or the transverse direction. In FIG. 1, for the sake of convenience, in order to show the state before and after the foaming of the foam pouch 100 is shown, the foam pouches 100 in the state where the foaming is initiated and already foamed are shown in the left part of the deck plate, The right side shows the foam pouches 100 that have been installed before the foaming starts.

The installation direction and installation spacing of the foam pouch 100 are not limited to the present invention, but may be appropriately set and installed to form a hollow according to the slab structure design.

Hereinafter, the configuration and operation of the foam pouch 100 will be described in detail with reference to FIG. 3, which shows the internal structure of the foam pouch 100 in detail.

As shown in the drawing, the foam pouch 100 is formed of a flexible material such as rubber or synthetic resin so that the inside thereof is hermetically sealed. As described later, the foam material contained in the foam pouch 100 is foamed The volume will expand. The closed inner space of the foam pouch 100 forms a " filling space S ", and the filling space S is filled with the foam formed after the start of foaming.

The shape and size of the foam pouch 100 are not particularly limited by the present invention. For example, the expanded shape after the start of foaming may be various shapes such as a hexahedron, a sphere, a polygonal shape, And may be designed or manufactured accordingly.

In the inside of the foam pouch 100, that is, the filling space S is provided with a foam opening member 200 for expanding the foam pouch 100 by a chemical foaming action. An example of such a foam initiating member 200 is shown.

3 and 4, the foam opening member 200 is another small pouch type provided in the filling space S, and includes a first compartment 210 in which a foaming agent is contained, And a second compartment 220 in which a foamable material is contained. The foam starting member 200 may be formed of the same material as the foam pouch 100 or may be formed of other materials. The material of the foam starting member 200 is not particularly limited by the present invention.

According to the present invention, a separation membrane 230 is formed between the first division space 210 and the second division space 220 to isolate the space between the first division space 210 and the second division space 220. In the separation membrane 230, The opening 232 is formed at the time when the foaming agent in the first partitioning room 210 and the foamable material in the second partitioning chamber 220 are in contact with each other.

According to an embodiment of the present invention, the opening 232 is temporarily closed by the trigger member 240, and the trigger member 240 has a function of opening the opening 232 by being removed by an external force do. The trigger member 240 may be made of a flexible material and may be made of the same material as the foam pouch 100 or the foam starting member 200. However, Various other materials can be applied as long as they can be easily removed and removed from the opening 232 that has been closed by an external force.

According to one embodiment of the present invention, at least a portion of the trigger member 240 extends to the exterior of the foam pouch 100 so that the operator can, for example, pull the opening 232 to open . Although the trigger member 240 is shown as being extended outwardly through the foam starting member 200 and the foam pouch 100 as a unit in the figure, the trigger member 240 is configured such that the trigger member 240 extends outwardly And methods are not limited by the present invention. For example, a string member (not shown) passing through the foam opening member 200 and the foam pouch 100 may be provided, and the string member may be configured to be connected to the trigger member 240. In this case, although the string member is provided so as to pass through the foam starting member 200 and the foam pouch 100, the gap is very small, so that after the foaming is started as described later, the foam hits the gap, It can be prevented from going out. More preferably, this effect can be further enhanced when the foamable material has properties of being cured upon contact with air.

As another example, the contact portion between the trigger member 240 and the foam starting member 200 and the foam pouch 100 may be integrally joined or attached so as to seal the inside thereof. In this case, since both the trigger member 240 and the foam starting member 200 and the foam pouch 100 are made of a flexible material, when the operator pulls the trigger member 240 from the outside, The opening 232 can be opened.

5, another example of the above-described foam starting member 201 is schematically shown. The foaming initiation member 201 according to the present embodiment has a configuration in which the trigger member 241 is interposed as a separation membrane between the first division room 210 and the second division chamber 220. The trigger member 241 may be formed of a flexible material as in the above-described embodiment, and at least a part of the trigger member 241 is formed outside the foam starting member 201 and the foam pouch 100.

In this case, when the operator pulls the extended portion of the trigger member 241, at least a part of the trigger member 241 serving as the separating plate is removed, so that the first compartment 210 and the second compartment 220 can communicate with each other .

6, another example of the foam starting member 202 is schematically shown. As shown in the figure, the foam opening member 202 of the present embodiment has a structure in which a thin separation membrane 234 is interposed between the first compartment 210 and the second compartment 220 to separate the compartments from each other.

The isolation layer 234 is formed of a flexible material, and preferably has a thickness or strength enough to easily rupture by an external force. In this case, when the operator presses or pressurizes the foam initiation member 202 or exerts an external impact, at least a part of the separation membrane 234 ruptures so that the first compartment 210 and the second compartment 220 are communicated with each other .

Although in the above embodiments, the trigger member is constituted by a separate member independent of the foam starting member, according to another embodiment, the trigger member may be integrally formed with the foam starting member or may be constituted as a part thereof .

According to an embodiment of the present invention, the first compartment 210 and the second compartment 220 may be separately stored with the foaming agent and the foamable material foamed by the foaming agent. The blowing agent refers to an additive that reacts with a polymer material to generate gas such as carbon dioxide or nitrogen to form bubbles. Preferably, when such a foaming agent is added to a polymer as a chemical foaming agent, it is chemically decomposed by heat to generate a gas, thereby forming a foam which is finally expanded in volume.

According to the present invention, such a foaming agent is, for example, azodicarbon amide (ADCA), p, p'-oxybis (benzenesulfonyl hydrazide) , Dinitroso pentamethylenetetra mine (DPT), p-toluenesulfonylhydrazide, benzenesulfonyl hydrazide, and the like.

The foamable material may be a synthetic resin such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer (EVA), polyvinyl chloride, styrene-butadiene rubber or acrylonitrile-butadiene rubber, rubber, polyamide And the like.

The foaming agent and the foamable material stored in the first compartment 210 and the second compartment 220 are set to an amount sufficient to sufficiently fill the filling space S of the foam pouch 100 by the foaming action .

3, the foam pouch 100 is provided with a fastening member 102 for fixing the foam pouch 100 to the deck plate structure, preferably to the truss reinforcing bar 20. As shown in FIG. For example, the fastening member 102 may be formed of a cord or a wire, and one end thereof is coupled to the foam pouch 100. It is to be understood that the fastening member 102 is not particularly limited in its material and shape, and that any member having a suitable structure for fixing the foam pouch 100 of the present invention can be employed.

A method of constructing the slab using the hollow plate deck plate having the above structure will now be described. 8 is a flowchart illustrating a slab construction method using a hollow slab deck plate according to an embodiment of the present invention.

Referring to FIGS. 1 and 2, a deck plate (see FIGS. 1 and 2) according to an embodiment of the present invention is installed between structures such as a steel beam, for example, where a slab installation is required (step S100). At this time, the deck plate may include the base plate 10 and the truss reinforcing bars 20 provided on the base plate 10 as described above. The installation and construction of such a deck plate can be performed according to well-known techniques in the art, and therefore, a detailed description thereof will be omitted.

After the deck plate is installed as described above, a plurality of foam pouches 100 are installed between the truss reinforcing bars 20 (step S110). The configuration and function of the foam pouch 100 are as described above. At this time, the foam pouch 100 can be installed and fixed to the deck plate using the fastening member 102 provided therein. For example, by connecting a wire extending from the foam pouch 100 to a part of the truss reinforcement 20 (for example, the lower truss reinforcement 22 or the connecting reinforcing bar 28) 100) can be fixed. However, the method of installing and fixing the foam pouch 100 on the deck plate is not limited to the present invention, and various other fastening means are applicable.

The foam pouch 100 may be installed at an appropriate number and spacing to form a hollow according to the slab structure design, and the arrangement thereof may be variously selected.

1 shows an example of the foam pouch 100 thus installed. Although the step S100 of installing the deck plate and the step S110 of installing and fixing the foam pouch 100 are sequentially performed in the embodiment of the present invention, For example, the order of steps S100 and S110 may be reversed, and according to another example, these steps may be performed in parallel with each other. Fig. 2 shows an example of the deck plate and the foam pouch 100 installed as described above.

When the installation of the deck plate and the foam pouch 100 is completed, the foaming start step S120 is performed. In the foaming start step S120, an operator applies an external force to the foam starting member 200 contained in the foam pouch 100 to release the isolation between the first compartment 210 and the second compartment 220, So that the foaming agent and the foamable material are brought into contact with each other so that the foam is formed by a chemical reaction. Accordingly, the foam pouch 100 expands as the foam is formed.

For example, in the case of the foam opening member 200 shown in FIG. 4, when the operator pulls out the trigger member 240 protruding from the outside, a gap between the first compartment 210 and the second compartment 220 The trigger member 240 is disengaged from the opening 232 of the interposed separator 230 and the opening 232 is opened. Then, the foaming agent stored in the first compartment 210 and the foamable material stored in the second compartment 220 are brought into contact with each other through the opened opening 232, so that a gas such as carbon dioxide or nitrogen The foam material expands and forms a foam.

Accordingly, the foam pouch 100 is expanded while filling the filling space S to maintain the final shape as shown in FIG.

5, when the operator pulls the trigger member 241, the first and second compartments 210 and 220 are isolated from each other The trigger member 241 is collapsed or dropped so that the first compartment 210 and the second compartment 220 are communicated with each other. As a result, the foaming agent and the foamable material stored in each of the first compartment 210 and the second compartment 220 react with each other, .

6, when an external force is applied to the foam starting member 202 or an impact is applied thereto, the gap between the first compartment 210 and the second compartment 220 The first separating chamber 210 and the second separating chamber 220 are communicated with each other as the separating membrane 234 which has been isolated is collapsed or removed so that the foaming agent contained in each of the first separating chamber 210 and the second separating chamber 220 reacts with each other, .

According to the foam initiation step (S120) as described above, for example, as shown in the left part of FIG. 1, all the foam pouches 100 are expanded and expanded.

Next, as shown in FIG. 9, the concrete is poured and cured on the deck plate in the expanded state of the foam pouch 100 (S130). The concrete is poured in an appropriate amount depending on the thickness of the slab to be built, and the concrete casting conditions and the method are not limited by the present invention. As described above, when the poured concrete is cured, a hollow portion corresponding to the foam pouch 100 is provided, so that a slab whose weight is reduced can be formed.

While the present invention has been particularly shown and described with reference to exemplary 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 spirit and scope of the invention as defined by the appended claims. There may be even examples.

10: base plate 20: truss reinforcement
100: foam pouch 102: fastening member
200, 201, 202: foaming starting member 210: first compartment
220: second compartment 230, 234:
232: opening 240, 241: trigger member
S: filling space

Claims (9)

A base plate;
A truss reinforcing bar provided on the base plate; And
And a foam pouch formed of a flexible material so as to be installed between the truss reinforcing bars and having a filling space formed therein,
Wherein the foam pouch includes a foaming initiation member that forms a foam filling the filling space by a foaming action by an external force,
Wherein the foam initiation member comprises:
A first compartment containing a foaming agent therein;
A second compartment containing a foamable material therein;
A separation membrane formed between the first compartment and the second compartment; And
At least a part of which extends to the outside of the foam pouch and which is configured to open an opening formed in the separation membrane by an external force,
Wherein the foam pouch further comprises a fastening member having one end coupled to the foam pouch so as to be fixed to the truss reinforcement of the deck plate.
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