JPS63241202A - Method for casting concrete floor panel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention involves arranging spacers on the foundation ground, erecting reinforcing bars vertically and horizontally on top of the spacers, and burying these spacers and reinforcing bars in poured concrete. This relates to the method of placing concrete slabs and is mainly applied to road paving.

(Prior art) Conventionally, in this type of concrete slab casting method, as a spacer for assembling reinforcing bars, reinforcing bars are placed on both upwardly facing ends of a steel plate A bent into a square shape, as shown in Fig. 5. Those in which an arc-shaped recess B for placing reinforcing bars was formed, and those in which recesses for placing reinforcing bars were formed at the upper ends of assembled reinforcing bars C as shown in FIG. 6 were used. After placing a large number of these spacers on the foundation ground and assembling the reinforcing bars placed in the recesses, concrete is poured and the reinforcing bars are buried in the concrete to form a concrete slab. was.

(Problems to be Solved by the Invention) The conventional method described above has the problem that the spacer is unstable and easily falls over or becomes misaligned, which not only does not improve work efficiency but is also dangerous. Each spacer can only correspond to one reinforcing bar, and a large number of spacers are required, which also makes it difficult to improve work efficiency and increases costs.

In view of the above-mentioned conventional drawbacks, the present invention provides a spacer that is stable and difficult to fall or shift position, improves work efficiency, is safe, and can significantly reduce the number of spacers required. The purpose of the present invention is to provide a method for placing concrete slabs that can reduce costs.

(Means for Solving the Problems) In order to achieve the above object, the present invention arranges spacers on the foundation ground, erects reinforcing bars vertically and horizontally on the spacers, and places these spacers and reinforcing bars in concrete. In the method for placing concrete slabs buried in the concrete slab, the spacers are formed by braces fixed at equal intervals over the entire length of the top reinforcement, and the spacers are placed on the foundation ground at predetermined intervals. , after arranging a plurality of longitudinal stripes along the direction intersecting the top stripe and a plurality of transverse stripes substantially parallel to the top stripe on the top strip of the spacer,
It is constructed with the characteristic of pouring concrete.

(Function) The method for placing a concrete slab according to the present invention involves arranging spacers on the foundation ground, erecting reinforcing bars vertically and horizontally on top of the spacers, and burying these spacers and reinforcing bars in the poured concrete. The spacer is formed by a top reinforcement and supporting legs fixed at equal intervals along the entire length of the top reinforcement, and the spacer is arranged on the foundation ground at a predetermined interval,
After arranging a plurality of vertical reinforcements along the direction intersecting the top reinforcement of each spacer and a plurality of horizontal reinforcement substantially parallel to the top reinforcement on each of these stable spacers, concrete is poured safely and efficiently. It is possible.

(Example) Next, an example of the present invention will be described with reference to the drawings, taking a concrete slab of a road as an example. FIG. 1 is a perspective view showing the method of placing a concrete floor plank according to the present invention, and FIG. 2 is a longitudinal sectional view of the same.

The method for placing a concrete slab according to the present invention involves arranging a plurality of spacers 1 on the foundation ground 9 of a road at predetermined intervals in the length direction of the road, and placing each spacer 1 on each of these stable spacers 1. After arranging a plurality of vertical reinforcements 2 at predetermined intervals and arranging horizontal reinforcements 3 on the vertical reinforcements 2 and assembling the vertical reinforcements 2 and horizontal reinforcements 3, concrete 8 is poured, and these spacers 1 This is a method of forming a road by embedding vertical reinforcements 2 and horizontal reinforcements 3 in concrete 8.

Figures 3 and 4 are perspective views showing spacers according to the present invention.

The spacer 1 is formed by a top muscle 4 and supporting legs 5 fixed at equal intervals over the entire length of the top muscle 4.

The top reinforcement 4 is made of round steel with a length that is approximately the same as the width of the road foundation 5117, and a supporting leg 5 is welded to the lower surface of the top reinforcement 4.

The support leg 5 is made of round steel having the same shape as the top B4 and is formed in an M shape, with a portion 6 slanting downward and outward.

Further, a concave holding part 7 for holding and fixing the top muscle 4 is formed in the upper part of the supporting leg 5, and a concave holding part 7 is formed at the lower end of the leg part 6, which is bent outward, that is, in a direction perpendicular to the top muscle 4. The landing portion 6a is torn.

As shown in FIG. 4, the landing portion 6a may optionally be bent in the same direction as the top muscle 4 and in opposite directions on both sides.

Further, the number of supporting leg tools 5 and the distance between the supporting leg tools 5 and other adjacent supporting leg tools 5 are determined according to the length of the top reinforcement 4.

Thus, a plurality of spacers 1 as described above are arranged at predetermined intervals in the length direction of the road so as to cross the road. Next, a plurality of longitudinal stripes 2 are placed on each top strip 4 of these spacers 1 along a direction intersecting the top strip 4.
are arranged parallel to each other at predetermined intervals using the distance 5a between the supporting legs 5 as a measure, and a plurality of horizontal reinforcements 3 are arranged on the plurality of vertical reinforcements 2 at predetermined intervals, and these The mutual intersection portions of the vertical reinforcements 2 and the horizontal reinforcements 3 are joined together by welding or the like. After assembling a plurality of longitudinal reinforcements 2 and horizontal reinforcements 3 in this way, concrete 8 is poured on the foundation ground 7 to a thickness that reaches above the horizontal reinforcements 3, and spacers 1 are placed in the concrete 8. , vertical strip 2 and horizontal strip 3
All of this will be buried to form a concrete slab. The above-mentioned vertical reinforcements 2 and horizontal reinforcements 3 may be assembled vertically and horizontally in advance by welding or the like and placed on the top WI 4. In this case, the vertical relationship of the vertical reinforcements 2 and horizontal reinforcements 3 is reversed from the above case. It is also possible.

According to the spacer 1 having the above configuration, the concave holding portion 7 formed on the upper part of the supporting leg 5 has both side portions 7a, 7a in a planar shape with the top reinforcement 4, so that the vertical reinforcement 2 is connected to the top reinforcement. 4
It can be used as a mark when placing it on top.

Therefore, the longitudinal cough muscles can be placed in a stable and efficient manner.

Note that the present invention is applicable not only to roads but also to airport runways, port pavements, and building floor slabs, and the vertical bars 2 are not limited to those bent in a U shape, but may be straight ones. There may be.

(Effects of the Invention) The present invention is configured as described above, and the spacer is formed of the top muscle 4 and the supporting legs 5 fixed at equal intervals over the entire length of the top muscle, so that the spacer is attached on each top muscle. Since a large number of vertical reinforcements can be arranged, the number of spacers required can be significantly reduced, and the spacers are stable and difficult to fall over or shift their positions. After arranging a plurality of vertical reinforcements along the direction intersecting the top reinforcement and a plurality of horizontal reinforcements substantially parallel to the top reinforcement on the top reinforcement of the spacer at intervals, concrete is poured. By doing so, it is possible to improve work efficiency, it is safe, and since the top reinforcement and both lower end reinforcements of the spacer also function as reinforcing materials in the same way as the horizontal reinforcement, it is economical and can reduce costs. It has the effect of

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the method of placing a concrete slab according to the present invention, FIG. 2 is a longitudinal sectional view of the same, FIGS. 3 and 4 are perspective views of a spacer according to the present invention, and FIGS. FIG. 6 is a perspective view of each conventional separate spacer. 1... Spacer, 2... Vertical stripe, 3... Horizontal stripe, 4
...Top reinforcement, 5. Support leg, 7. Foundation ground,
8...Concrete.

Claims (1)

[Claims] In a concrete slab pouring method in which spacers are placed on the foundation ground, reinforcing bars are assembled vertically and horizontally on top of the spacers, and these spacers and reinforcing bars are buried in poured concrete, the spacers are placed between the top reinforcement and the top reinforcement. The spacer is placed on the foundation ground at a predetermined interval, and the spacer is placed on the top reinforcement of the spacer along the direction intersecting the top reinforcement. A method for placing a concrete slab, comprising placing concrete after arranging a plurality of vertical reinforcements and a plurality of horizontal reinforcements substantially parallel to the top reinforcement.