JPH0542432U - Reinforcement structure of concrete slab - Google Patents

Abstract

(57) [Summary] [Purpose] To make it possible to perform rebar work in concrete slabs easily and accurately. [Structure] On a base plate 1 such as a deck plate, main bar arrangement bodies 3 having reinforcing bars 7 and 8 fixed at a predetermined height are arranged at equal intervals, and one or both of the reinforcing bars 7 and 8 are welded wire mesh 4 Is laid. Since the main bar can be arranged without using a spacer, which has been conventionally required to support the main bar, the work can be facilitated and the bar can be arranged accurately without any alignment.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a reinforcing structure of a concrete slab used in concrete construction.

[0002]

[Prior Art]

 When arranging concrete slabs, it is necessary to dispose the upper and lower end reinforcements, which are the main reinforcements, above the foundation. Therefore, spacers are arranged on the base, and the main bars are installed on the spacers.

[0003]

[Problems to be solved by devising]

 In the above-mentioned conventional technique, two steps of arranging the spacer and installing the main bar are required, and moreover, the arrangement interval of the spacer and the main bar must be measured on site, which requires skill. In addition, the spacers are simply placed on the base, which may cause them to shift during the work. Further, as a technique for facilitating the disposition of the main bar, a technique of using a welded wire net for the main bar has been proposed, but a spacer is required as in the above-mentioned conventional technique.

[0004]

[Means for Solving the Problems]

 In this invention, a reinforcing bar is fixed to a predetermined height of a support body to form a main bar disposing body, and a reinforcing bar of the main bar disposing body is covered with a welding wire mesh to provide a rebar structure structure. It is a solution to the problem. The base may be a synthetic slab deck plate, a flat deck plate, or concrete, but in the case of a synthetic slab deck plate, it suffices to place the welded wire mesh only on the upper end streak. Further, the specific structure of the support is not limited to the embodiment, and any structure can be used as long as it can hold and fix the upper end streak and the lower end streak at a predetermined height.

According to a second aspect of the present invention, the main bar arrangement body has a support body in which a pair of lattice-shaped bending rebars are joined in an inverted V shape, the top bar is fixed to the upper end, and the bottom bar is fixed to the lower end. The strength of the support is high, and the support itself functions as a reinforcing bar. According to a third aspect of the present invention, the base is a deck plate for a synthetic slab, and the lower part of the support is locked to the lower side of the groove of the synthetic deck plate. Strength is obtained.

[0006]

[Action]

 In this device, since the reinforcing bars in the main bar arrangement body are fixed to the support at a predetermined height for both the upper end bar and the lower end bar, if this main bar arrangement body is arranged on the base at a predetermined interval, a spacer is used. The main bar is disposed and held at a predetermined height without any need.

[0007]

【Example】

 In FIG. 1, a main bar arrangement body 3 is installed in a groove 2 of a deck plate 1 for a synthetic slab supported by a steel frame (not shown), and a welding wire net 4 is laid on the main bar arrangement body 3. is there. Reference numeral 5 in the figure is concrete. The main bar arrangement body 3 has the structure shown in FIG. That is, the upper end bar 7 is welded and fixed to the upper end bent portion of the pair of lattice-shaped bent rebars 6 and 6 serving as a support, and the lower end of each bent rebar 6 and 6 is spaced from the lower end by a predetermined distance. The lower end reinforcements 8 and 8 are welded and fixed to each other, and the lower end bent portions of the bent rebars 6 and 6 are bearing portions 6a which are horizontally expanded outward.

The size and the fixing position of the bent reinforcing bar 6 are determined so that both the upper end bar 7 and the lower end bar 8 are arranged at a height suitable for functioning as a main bar. Further, in FIG. 1, a recessed line 9 is formed on the side of the groove 2 of the composite slab deck plate 1 over the entire length thereof, and the tip of the support part 6a of the main bar arrangement body 3 is formed in the recessed line 9. Is locked. In this embodiment, since the synthetic slab deck plate 1 is used as the base, it is not necessary to dispose the welding wire mesh on the lower end streak 8.

In this embodiment, the deck plate 1 for the synthetic slab, which is designed on the assumption that the lower end streak is not provided, is used, but since the lower end streak 8 is provided, the strength is remarkably increased. It is economical because even a slab with a large load can obtain the desired strength with a thin deck plate. Further, the main bar arrangement body 3 may be installed in the groove portion of the deck plate 1, no positioning is required, and there is no possibility of shifting after installation. Further, since the support portion 6a of the main bar arrangement body is locked to the recessed line 9 of the deck plate 1, both can be integrated to obtain strength as a composite truss. When using a deck plate without the concave line 9, it is preferable to prevent the displacement of the main bar arrangement body 3 by making the tip of the supporting portion 6a contact the side wall of the groove 2.

Next, the embodiments of FIGS. 3 and 4 show an embodiment in which the base is a flat deck plate. The main bar arrangement bodies 3 are installed on the flat deck 11 at predetermined intervals. The structure of the main bar disposition body 3 is basically the same as that of the above-described embodiment, but the upper end bar 4 is formed by welding the upper ends of the bending rebars 6 and 6 to the upper end of the support, and the C clip 12 is formed. It is stuck in. In addition to the upper end streak 7, the welding wire net 13 is laid on the lower end streak 8. In order to construct this bar arrangement, the main bar arrangement body 3 in which the upper end bar 7 is not attached is installed on the deck plate 11, and then the welding wire net 13 is laid on the lower bar bar 7. After that, the upper end bar 7 is fixed to the upper ends of the bent rebars 6, 6 by the C clip 12, and the welding wire net 4 is laid on the upper end bar 7. The same applies to the case where the base is concrete. Further, in both of the above examples, since the supporting body is composed of the bent reinforcing bar 6, the supporting body functions as a reinforcing reinforcing bar and the strength is further increased. For example, as shown in FIG. The upper end streak 7 and the lower end streak 8 may be fixed.

[0011]

[Effect of the device]

 According to the present invention, since the upper end bar and the lower end bar are fixed to the support to form an integral main bar arrangement, the main bar is held and arranged at a predetermined height without using a spacer, which was conventionally required. Can be set up. In addition, positioning is not required if combined with a deck plate for synthetic slabs, and even with other bases, this main bar arrangement is highly stable unlike conventional spacers, so it can be used during concrete pouring. The position does not shift to that. Also, since it is combined with the welding wire net, the work of arranging the wire is completed only by installing the main bar arrangement body and laying the welding wire net, and no skilled technique such as the conventional arrangement bar is required, and the following description is shortened. .. Further, since the welded wire mesh has good average non-sticking performance, it has an effect of finely dispersing cracks generated in the concrete member.

[Brief description of drawings]

FIG. 1 is a front view of the embodiment of the invention.

FIG. 2 is also a perspective view of a main bar arrangement body.

FIG. 3 is a front view of an embodiment of the flat deck.

FIG. 4 is a side view of the same.

FIG. 5 is a perspective view of another embodiment of the main bar arrangement body.

[Explanation of symbols]

 1 Deck Plate for Synthetic Slab 2 Groove 3 Main Bar Arrangement 4 Welding Wire Mesh 5 Concrete 6 Bending Reinforcing Bar 6a Support 7 Upper End Bar 8 Lower End Bar 9 Recess 11 Flat Deck 12 C Clip 13 Welding Wire Net

Claims (4)

[Scope of utility model registration request] 1. A concrete slab in which a plurality of main bar arrangement bodies, in which reinforcing bars are fixed to a predetermined height of a supporting body, are arranged at equal intervals on a base, and a welding wire mesh is arranged on the reinforcing bars. Bar arrangement structure 2. The main bar arrangement body has a pair of lattice-shaped bent rebars joined in an inverted V-shape with an upper end bar fixed to the upper end and a lower end bar fixed to the lower end. Reinforcement structure of the concrete slab according to claim 1. 3. The reinforcing bar structure for a concrete slab according to claim 1, wherein the base is a deck plate for a synthetic slab, and the lower part of the support body is locked below the groove of the deck plate. 4. The reinforcing structure of the concrete slab according to claim 1, wherein the base is a flat deck plate or concrete.