KR200186307Y1 - Deck panel of reinforced concrete slab - Google Patents

Abstract

The present invention provides an upper reinforcement, a galvanized steel sheet having a plurality of ribs opposed to each other in a longitudinal direction, a lattice reinforcing alternately joined to the upper reinforcement and the opposed ribs, and the upper portion near both ends of the upper reinforcement. A deck panel of reinforced concrete slabs comprising reinforcing bars and end members joined onto the opposed ribs.

Description

Deck panels of reinforced concrete slabs {DECK PANEL OF REINFORCED CONCRETE SLAB}

The present invention relates to a reinforced concrete slab structure of a general building, and more particularly to a deck panel of reinforced concrete slab to enable the reinforcement and finishing of the structure.

In general, reinforced concrete structure is a composite structure using both concrete as a compression material and reinforcing steel as a tensile material, which is to form a form to form the outer surface of the concrete, reinforce the reinforcement on the form, and then cast concrete to finish curing It is achieved by the process of removing the formwork, which is the main slave of the building structure.

The above-described structure requires considerable construction period because construction work for laying down formwork with plywood, lumber, etc. and performing disintegration work such as reinforcing bars and dismantling work for dismantling formwork after curing of concrete is required.

In particular, the above-mentioned structure is difficult to dismantle and separate the formwork due to the sticking of the concrete surface and the formwork, as a result of the failure of the surface of the structure requires a separate surface finishing work and the formwork of material with weak durability is dismantled It is difficult to reuse due to the damage during work has a problem that generates a large amount of waste materials.

In order to solve this problem, the proposed method does not use formwork, that is, a method of using the structure used to form the outer surface of concrete as it is part of the reinforced concrete structure has been proposed.

The most widely used method described above is a method using a deck plate as shown in Figs. This is because the installation work is performed by simply covering the deck plate between beams, thus eliminating the need for construction and installation of formwork, eliminating the need for additional finishing work, and providing a safe working space for workers. It is widely used in the construction of slab floors in large buildings in recent years due to the fact that the period can be greatly shortened.

Looking at the above-described technology in more detail, as shown in Fig. 7 is provided with two lattice material (2, 2 ') facing inclined outwardly of the upper reinforcing bar (3) and the lower reinforcing bar (4, 4') The deck girder (1) is configured to join to the finishing plate (5) to form a deck panel, so the deck panel is installed on the beam (beam) and then the installation work is completed by placing the reinforcing bar network, the curing of concrete After finishing plate (5) is the finishing material as it is to have the effect of reducing the cost of air shortening and construction of the slab structure construction.

However, the deck panel described above has a structure in which the deck girder 1 constituting the deck panel 1 forms a lattice material 2, 2 'that supports the upper reinforcing bar 3 and the plurality of lower reinforcing bars 4, 4'. Since the loss of materials due to excessive consumption of the lattice material (2,2 ') and the increase in the number of welding labor for welding the same, the workability is reduced and the manufacturing cost is increased, and the deck girder (1) is opposed. There is a problem in that the space is formed between the lattice material (2, 2 ') is not easy to enter the aggregate when the concrete is injected.

Deck panel in view of the above-described problems, as shown in Figure 8 deck girder 10 is bonded to a single lattice material 12 on the upper reinforcing bar 13 and the lower reinforcing bar 14, but the lattice material 12 Is bent in a zigzag and the support parts 12a and 12a 'extending from one side to be twisted between the upper and lower bars 13 and 14 and the foots 12b and 12b' below are staggered from side to side of the upper and lower bars 13 and 14. The deck plate 20 is formed by successively forming the bone 21 and the mountain 22 while the deck girder 10 is joined to and installed on the joining protrusion 23 of the bone 21. Will be.

However, the deck panel of FIG. 8 has a large height between the valleys 21 and the peaks 22 of the deck plate 20, and requires at least two rebars, namely the upper reinforcement 13 and the lower reinforcement 14, Since the feet 12b and 12b 'of the lattice material 12 are bent, there is a problem of waste of material, weight of the structure, and an increase in the number of working steps.

The present invention has been devised to solve the above-mentioned problems, and it is necessary to use only the upper reinforcing bars and do not need to bend the portion where the lattice reinforcing bar is joined to a plurality of opposing rib sides formed longitudinally bent on the surface of the galvanized steel sheet. Its purpose is to provide a deck panel of reinforced concrete slabs, which is excellent in workability and minimized in manufacturing cost due to the reduction in the number of working processes.

The deck panel of the reinforced concrete slab of the present invention for achieving the above object is a lattice that is alternately bonded to the upper reinforcement, galvanized steel sheet formed with a plurality of ribs facing in the longitudinal direction, alternately to the upper reinforcement and the opposed ribs And an end material joined to both the upper reinforcement and the opposed rib near both ends of the reinforcing bar and the upper reinforcing bar.

In the above-described configuration, it is preferable that the lattice reinforcement further includes a plurality of lower reinforcing bars.

In addition, the joints may be implemented by TIG welding.

1 is a perspective view showing a deck panel according to a first embodiment of the present invention.

2 is a side view of FIG. 1;

3 is a plan view of FIG.

4 is a front view of FIG. 1;

5 is a perspective view showing a deck panel according to a second embodiment of the present invention.

6 is a front view of FIG. 5;

Figure 7 is a perspective view of a conventional deck panel.

8 is a perspective view showing another conventional deck panel.

<Explanation of symbols for main parts of the drawings>

100,200: Deck Panel 110: Upper Bar

120,220: galvanized steel sheet 130: lattice (lattice) rebar

140: end material 150: rib

160, 170: Wrap portion 210a, 210b: Lower reinforcing bar

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the deck panel of the present invention.

Example 1

1 is a perspective view illustrating a deck panel according to a first embodiment of the present invention, FIG. 2 is a side view of FIG. 1, FIG. 3 is a plan view of FIG. 1, and FIG. 4 is a front view of FIG. 1.

Deck panel 100 is a lattice reinforcing rod 130 and the end member connecting the upper reinforcement 110, the galvanized steel sheet 120, the upper reinforcement 110 and the galvanized steel sheet 120 as shown in FIG. 140).

In the above-described configuration, the upper reinforcement 110 is preferably composed of a deformed reinforcement to improve the fixing with concrete.

The galvanized steel sheet 120 serves as a lower reinforcement and formwork at the same time, is a plated steel plate to prevent corrosion due to contact with concrete. As shown in FIG. 1, ribs 150 are bent to face each other in the longitudinal direction of the galvanized steel sheet 120, and wrap portions 160 and 170 which connect the adjacent galvanized steel plates 120 to both ends in the longitudinal direction. ) Is formed.

The lattice reinforcement 130 is bent in a truss shape, and is bonded by spot welding to the ribs 150 opposite to the upper reinforcement 110 alternately alternately as shown in FIG. 3, to prevent defects in the joining site. It is preferable to join by TIG welding using an inert gas. In addition, the lattice reinforcement 130 may also be implemented as a deformed rebar as needed.

As shown in FIG. 4, the end member 140 connects the upper reinforcement 110 and the galvanized steel plate 120, as in the lattice reinforcement 130, and the upper end of the end member 140 is formed of the upper reinforcement 110. The outer periphery of the upper reinforcement 110 is wrapped around the both ends and joined in a pulling shape, and the lower end of the end member 140 is joined to the side of the opposed rib 150 and the surface of the galvanized steel sheet 120 As a result, by applying a camber to the upper reinforcing bar 110 and the galvanized steel sheet 120, residual stress is reduced after the concrete is poured.

Therefore, the deck panel of the present invention is welded three-dimensional lattice reinforcement to a substantially horizontal galvanized steel sheet, the upper reinforcing bar is welded and installed on the lattice reinforcement, after the concrete is poured and hardened the galvanized steel sheet and concrete, Constructs a synthetic slab that does not require rebar.

Example 2

According to the first embodiment described above, since the galvanized steel sheet 120 must function together with the lower reinforcing bar, the thickness of the galvanized steel sheet 120 is larger when the length of the galvanized steel sheet 120 is extended. You lose.

5 is a perspective view illustrating a deck panel according to a second embodiment of the present invention, and FIG. 6 is a front view of FIG. 5. As shown in FIGS. 5 and 6, the deck panel 200 has a structure similar to that of the deck panel 100 shown in FIG. 1, but includes a plurality of lower rebars, such as the upper reinforcing bar 110 and the galvanized steel sheet. It comprises a lower reinforcement (210a, 210b) bonded to the lattice reinforcement 130 between the 220.

Therefore, the lower reinforcing bars 210a and 210b are added to the deck panel 200, whereby the thickness of the galvanized steel sheet 200 is surely reduced.

The deck panel of the reinforced concrete slab of the present invention is not limited to the above-described embodiments and can be variously modified within the range allowed by the technical idea of the present invention.

As described above, the deck panel of the reinforced concrete slab of the present invention uses only the upper reinforcing bar, and the lattice reinforcing bar is used as it is without bending the portion joined to the galvanized steel sheet, thereby saving material, reducing weight, and reducing the number of work steps. The log workability is excellent as well as the production cost is minimized.

Claims (3)

With upper rebar, Galvanized steel sheet formed with a plurality of ribs facing each other in the longitudinal direction, Lattice reinforcement alternately bonded to the upper reinforcement and the opposite rib and A deck panel of reinforced concrete slabs comprising an end material bonded to the upper reinforcement and the opposed ribs near both ends of the upper reinforcement. The deck panel of reinforced concrete slab according to claim 1, further comprising a plurality of lower reinforcing bars in the lattice reinforcing bars. The deck panel of reinforced concrete slab according to claim 2, wherein the joint is made by TIG welding.