KR200200417Y1 - Deck girder of reinforced concrete slab - Google Patents

Abstract

The first foot bent in the horizontal direction, the first support portion formed to be inclined upward from the first foot, and maintain the horizontal direction at the first support portion to provide a stable structure and provide a stable structure for ease of use. A connection part bent at a predetermined angle, a second support part formed to be inclined downward with an inclination angle corresponding to the first support part at the connection part, and a second extending outward from the second support part and having a shape corresponding to the first foot It holds a lattice comprising a foot, at least one of the upper and lower reinforcement is supported on the first support, the second support and the extension by spot welding, the lattice is continuous in the longitudinal direction while being alternately bent with a single wire Deck girders of reinforced concrete slabs, which are made of and To provide.

Description

Deck girder of reinforced concrete slab {DECK GIRDER OF REINFORCED CONCRETE SLAB}

The present invention relates to a deck girder of reinforced concrete slabs, and more particularly, to a deck girder of reinforced concrete slabs made to provide a stable structure and convenient to use.

Reinforced concrete structure is a composite structure that uses a combination of concrete, which is a compressive material, and rebar, which is a tension material, and forms the main dominant of general building structures.

The most common way to build a reinforced concrete slab structure is to Forming a mold to form a cotton and a copper bar (jiboong) for supporting the form is installed, the reinforcing bar on the formwork, cast concrete, and after curing is completed, the process consists of removing the form and the copper bar.

This method consumes a considerable amount of air due to the work required for the construction and dismantling of formwork and copper bars, separate reinforcement work, and the need for finishing work due to the surface defect of the structure, and also due to the generation of waste materials by the formwork. There are various problems such as poor economics.

Therefore, there is known a method of not removing the formwork without using the copper bar, that is, using the structure used to form the outer surface of the concrete as part of the reinforced concrete structure in the direction of improvement of the problem caused by the use of the formwork and the copper bar.

4 and 5 illustrate a deck panel that is most widely used in the method without removing the formwork, and does not use copper bars.

The deck panel has a deck plate 52 of a predetermined thickness and a deck girder longitudinally welded to the upper surface of the deck plate 52 so as to withstand the weight and construction load of the concrete sufficiently ( deck girder) 54.

The deck plate 52 is provided with a protrusion 56 at regular intervals in the longitudinal direction, and the deck girder 54 is fixed to the protrusion 56 by spot welding or the like.

The deck girders 54 are continuously curved in the longitudinal direction and have a foot 58 having a lower leg shape, and have a predetermined inclination angle in the foot 58 to have a wavy shape. Lattice 62 consisting of a support portion 60 that is bent into a plurality of, and using a plurality of the lattice 62 to have a triangular shape when viewed from the end surface, the upper reinforcement 64a is fixed to the upper inner side between the lattice 62 And a lower reinforcement 64b fixed to the support part 60.

The deck girder 54 is manufactured by spot welding the foot 58 to the deck plate 52, and is transported to a vehicle or the like to be installed at a place where a structure is to be formed.

As such, the deck panel consisting of the deck girder 54 and the deck plate 52, when installed between the beam and the beam, constitutes a floor surface that itself supports the weight and construction load of the concrete, and at the same time serves as a concrete formwork without a club. Will be

When the concrete is laid on the deck panel and undergoes a curing process for a certain period of time, the slab is constructed. The upper reinforcement 64a and the lower reinforcement 64b constituting the deck girder 54 become the main reinforcing bars of the reinforced concrete slab, and the entire slab is constructed. The strength is maintained, the deck plate 52 mainly serves as formwork during construction, and becomes the surface of the slab structure.

However, the conventional deck girder 54 as described above has a problem in that it is vulnerable to external forces such as buckling and vibration acting in the vertical direction or the lateral direction by forming one upper rebar in a triangular structure.

And since the deck girder 54 has a structure in which each lattice 62 is installed to be opposite to both sides of the upper reinforcement 64a, two lattices 62 are necessarily required. Since the lower reinforcing bars are bundled at the same intervals, the equipment is inefficient for the three pieces of equipment.

In addition, the deck girder 54 has a triangular end surface is inconvenient for workers to walk on it, lacking workability and safety, and according to the design of the structure, one or two lower reinforcement 64b in one upper reinforcement 64a Since the deck girder 54 is installed only by applying different thicknesses of), it may be impossible to economically install various reinforcement combinations that are differently applied depending on the structure.

An object of the present invention is to solve the above problems, it is possible to simply manufacture a lattice by bending one iron wire in the trapezoidal form at the end, so that the upper reinforcement and the lower reinforcement to the appropriate reinforcement according to the design of the structure By providing a stable deck panel, it is to provide a deck girder of reinforced concrete slab made to be convenient to use.

1 is a perspective view of the deck girder of the reinforced concrete slab according to the present invention.

2 is a side view of FIG. 1;

Figure 3a is a perspective view showing another embodiment of the present invention.

3B is a side view of FIG. 3A.

4 is a perspective view of the deck girder of the reinforced concrete slab according to the prior art.

5 is a side view of FIG. 4.

Deck girders of reinforced concrete slab proposed by the present invention,

In deck girders used for reinforcement of reinforcing bars when constructing reinforced concrete slabs,

A first foot bent in a horizontal direction,

A first support part inclined upwardly from the first foot,

A connection part bent at a predetermined angle while maintaining a horizontal direction in the first support part;

The inclined angle corresponding to the first support portion in the connecting portion is inclined downward And a lattice including a second support formed on the first support and a second foot extending outwardly from the second support and having a shape corresponding to the first foot, wherein the first support, the second support, and the connection portion include at least one The upper and lower reinforcing bars are supported by spot welding, and the lattice provides a deck girder of reinforced concrete slabs, which are continuously formed in the longitudinal direction while being alternately bent by one iron wire and have a trapezoidal shape when viewed from an end surface.

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

1 is a perspective view of the deck girder of the reinforced concrete slab according to the present invention, Figure 2 is a side view of Figure 1, the deck girder 2 of the reinforced concrete slab according to the present invention, the first foot (bending in the horizontal direction) 4a), a first support part 6a formed to be inclined upwardly from the first foot 4a, a connection part 8 bent at a predetermined angle while maintaining a horizontal direction in the first support part 6a, and the connection part A second support portion 6b formed at an inclination angle corresponding to the first support portion 6a and inclined downward in (8), extending outwardly from the second support portion 6b and corresponding to the first foot 4a; It has a lattice 10 comprising a second foot 4b in the shape.

At least one lower reinforcing bar 12b is fixed to the first supporting part 6a and the second supporting part 6b by spot welding, and at least one upper reinforcing bar 12a is connected to the connecting part 8 by spot welding. It is fixed.

That is, the deck girder 2 of the present embodiment is fixed to the lattice 10 and the lattice 10 The upper and lower reinforcement is made of 12a, 12b, the lattice 10 is bent in a single iron wire alternately in the longitudinal direction and is configured to have a trapezoidal shape in the end face.

This structure is a lattice 10 is made of a single strand of wire, the deck girder (2) when installing the deck panel, the upper end of the compressive force acts a narrow gap between the support of the lattice (10), the lower end of the tension acts the lattice ( 10) The upper and lower reinforcement (12a) (12b) is reinforced in a state in which the spacing of the support is wide, the deck girder (2) is efficiently formed in the thin equipment of the reinforcement axial force can be easily manufactured at a low cost, trapezoidal shape The upper reinforcement 12a and the lower reinforcement 12b can not only properly reinforce the calculated reinforcement amount according to the design of the structure, but also the construction load, buckling, vibration and The strength against the same external force is excellent, resulting in a stable structure.

The upper and lower reinforcing bars (12a, 12b) it is preferable to use a deformed reinforcement to improve the fixing with concrete.

The deck girder 2 as described above is fixed by spot welding to the deck plate 14 of a predetermined thickness to withstand the weight and construction load of the concrete.

The deck plate 14 is formed with a lattice-shaped protrusion 16, which is formed by spot welding the first foot 4a and the second foot 4b formed on the lattice 10 on the protrusion 16. Deck girder (2) is made to maintain the installed state, the installation of the deck girder (2) is constant in the horizontal or vertical direction depending on the design of the structure Install at intervals.

The grid-shaped protrusion 16 of the deck plate 14 prevents the bending of the deck plate 14 to maintain smoothness, and when the lattice 10 is joined to the upper part, the lattice 10 is spot welded by touching the wire and measuring the length in the field. Is good, and in the case of exposed ceiling, it looks good.

Both sides of the deck plate 14 are composed of joints 18 of a structure that are matched with each other so as to connect different deck plates, and the joints 18 are assembled by overlapping each other in an annular fold to form a wide joint. It is possible to assemble continuously in the area, and it is easy to work because they only need to be fitted together.

The deck plate 14 and the deck girder 2 can be accurately manufactured according to the drawings according to the structure at the factory, so that it can be configured as a single panel of the deck panel can be accurately and quickly construction.

The deck panel consisting of the deck girder 2 and the deck plate 14 is transported to the construction site, and then fixed to the beam by spot welding or nails to the beam in accordance with the reference line, using a joint 18 After the installation sequentially, the slab is constructed by installing the reinforcement muscles and reinforcement or subsidiary materials and placing concrete and curing the concrete for a certain time.

In the above, the installation interval of the deck girder (2) is generally maintained about 150 ~ 300mm, depending on the thickness of the upper and lower reinforcing bars (12a) (12b) provided to the structure or deck girder (2), or more It can also install in the following intervals.

In the present embodiment, the deck girder 2 is fixed to the deck plate 14 to slab Although it was described as building a slab without removing the formwork, it is not limited thereto, and it can be used as a formwork for the wall when forming a concrete wall structure, and installing the formwork of the beam between the column and the column, or After the beam formwork is installed in the upper part, and the deck girder 2 is fixed to the formwork, concrete may be poured thereon to form a beam.

In the above embodiment, the lattice 10 of the deck girder 2 has been shown to be configured to have a trapezoidal shape as seen from the end surface is continuous in the longitudinal direction while one wire is staggered alternately, as shown in Figures 3a and 3b By continuously bending the iron wire in the lateral direction, the lattice 24 is manufactured so that the first support portion 20a, the connecting portion 22, and the second support portion 20b have a trapezoidal shape that is continuously formed when viewed from the end surface, and the lattice ( 24 is fixed by spot welding to the deck plate 14 at regular intervals in the longitudinal direction, and then one or more upper and lower reinforcing bars 26a to the connecting portion 22, the first supporting portion 20a and the second supporting portion 20b. The deck girder 28 may be formed by fixing the 26b by spot welding.

The deck girder 28 manufactured in this way can bend the lattice 24 constituting the deck girder 28 relatively simply and easily, and requires less material for manufacturing the lattice 24. Economical construction is possible.

In the above, the preferred embodiment of the present invention has been described by way of example, but is not limited thereto. It is also possible to carry out various modifications within the scope of the utility model registration claims and the detailed description of the invention and the accompanying drawings.

Deck girder of the reinforced concrete slab according to the present invention made as described above, because the upper and lower reinforcing bar is spot welded to the trapezoidal lattice from the end surface, it is applied to external forces such as buckling and vibration acting in the vertical or lateral direction of the slab It has a stable structure with respect to the reinforcement of the upper compression part of the deck girder, the spacing of the support of the lattice is narrow, and the support spacing of the reinforcement of the lower tension portion is widened to form a lattice with a single iron wire, which makes it easy and economical. Can be.

In addition, because the trapezoidal shape, the lower part is wider and the upper part is narrower, it can be poked, so that when it is produced and loaded, the product is less bulky when loaded into a warehouse or transported to the site, and space and cost can be saved.

And since the Lattice's two upper bars are convenient for workers to walk around, workability and safety are provided.

And since the Lattice's upper and lower rebars are each 2, the upper and lower rebars can be made larger and smaller, so that the appropriate reinforcement combination can be freely made according to the design of the structure, and the optimal economical reinforcement combination can be achieved. Therefore, even when additional rebar for structural reinforcement is needed on site, insertion of rebar is easy in the field.

Claims (5)

In deck girder used for reinforcement of reinforcement when constructing reinforced concrete slab, the first foot bent in the horizontal direction, the first support part formed to be inclined upward from the first foot, and maintain the horizontal direction in the first support part. And a connection part bent at a predetermined angle, a second support part formed to be inclined downward with an inclination angle corresponding to the first support part at the connection part, and a second extension part extending outward from the second support part and corresponding to the first foot. It holds a lattice comprising two feet, at least one of the upper and lower reinforcement is supported by the spot welding on the first support, the second support and the connecting portion, the lattice is continuous in the longitudinal direction while being alternately bent with a single wire Deck girders of reinforced concrete slabs, characterized in that consisting of. The deck girder of the reinforced concrete slab of claim 1, wherein the lattice is formed to have a trapezoidal shape when viewed from an end surface. The deck girder of the reinforced concrete slab of claim 1, wherein the deck girder is used for beams between pillars and columns, and upper beams of masonry. The method according to claim 1, wherein the first foot and the second foot of the lattice is spot welded to the projection of the deck plate, the projection of the deck plate is characterized in that the grid Deck decker of reinforced concrete slab. The deck girder of the reinforced concrete slab of claim 1, wherein the lattice has a trapezoidal shape that is continuously formed when viewed from the end surface by continuously bending the iron wire in the transverse direction.