JPH0461947B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a structure for arranging reinforcing bars between formworks when pouring reinforced concrete.

[Background technology] When constructing a foundation etc. using reinforced concrete, reinforcing bars 3 are placed upright between the formworks 2 and 2, and concrete is poured between the formworks 2 and 2. It is carried out. In this case, if a mesh formwork or the like in which the reinforcing ribs 1 are bent is used as the formwork 2, it is necessary to set a large interval between the formworks 2 in order to ensure the thickness of concrete covering the reinforcing bars 3. This resulted in a large amount of concrete being consumed.

In other words, Fig. 2 shows the location where the formwork 2 provided with horizontal reinforcing ribs 1 is used, but if the thickness of the concrete covering the horizontal reinforcing bars 3a of the reinforcing bars 3 is required to be T ₁ . Then, the horizontal distance dimension T ₂ between the reinforcing rib 1 and the horizontal reinforcing bar 3 a located at the same height as the reinforcing rib 1 is the dimension obtained by subtracting the protruding dimension t of the reinforcing rib 1 from T ₁ . The thickness of the overlying concrete is also t from T ₁ .
It becomes a thin T ₂ with dimensions of . Therefore, in order to ensure that the concrete cover thickness on the reinforcing bars 3a is T ₁ , it is necessary to set the interval between the formworks 2 and 2 larger by the dimension t to form a thicker foundation. consumption will increase.

[Object of the Invention] The present invention has been made in view of the above points, and provides a formwork for pouring reinforced concrete that can ensure the thickness of the concrete cover to the reinforcing bars without the need to increase the consumption of concrete. The purpose of this is to provide a structure for arranging reinforcing bars in between.

[Disclosure of the Invention] According to the present invention, a pair of molds 2, 2 each having a reinforcing rib 1 formed in a protruding manner on one side are arranged facing each other with each reinforcing rib 1 facing inward, and the molds 2, 2 are When placing the reinforcing bars 3 in between, the reinforcing bars 3 placed parallel to the reinforcing ribs 1 are arranged so as to be shifted from the position of the plane that passes through the reinforcing ribs 1 and is perpendicular to the formwork 2. The present invention is characterized in that by shifting the position of the reinforcing bars 3 from the position of the reinforcing ribs 1, it is possible to ensure the thickness of concrete covering the reinforcing bars 3. will be explained in detail with examples.

As the formwork 2, a mesh formwork formed of wire mesh or the like is used, and the mesh formwork is provided with a plurality of parallel reinforcing ribs 1 in a convexly bent manner for reinforcement. A pair of formworks 2, 2 are erected parallel to the ground so that the reinforcing ribs 1 face each other and face inward. In the embodiment shown in Fig. 1, the reinforcing ribs 1 are oriented sideways (horizontal ), the formwork 2 is used. Further, the reinforcing bars 3 are vertical reinforcing bars 3b and horizontal reinforcing bars 3a assembled by binding or welding, and are placed upright between the formworks 2, 2. It is placed at the center position between the frames 2, 2.

Each horizontal reinforcing bar 3a is placed in a position that is vertically shifted from the height position of the reinforcing rib 1 of the formwork 2 on the nearby side, that is, the reinforcing bar 3a passes through the reinforcing rib 1 into the formwork 2.
It is placed at a position that is vertically offset from the plane perpendicular to .
Therefore, since the horizontal reinforcing bars 3a and the reinforcing ribs 1 are vertically shifted in the horizontal direction, each reinforcing bar 3a in the horizontal direction
The distance between the formwork 2 and the formwork 2 can be maintained at T ₁ , and the concrete cover thickness at the reinforcing bars 3a in reinforced concrete such as foundations formed by pouring concrete between the formwork 2 and 2 can be maintained at _T1 . Can be set. Here, each horizontal reinforcing bar 3a
It is preferable to set the arrangement position at a height near the center between the upper and lower reinforcing ribs 1, and the interval dimension T ₃ between the reinforcing bar 3a and the reinforcing rib 1 satisfies T ₃ ≧ T ₁ . Good. In this way, it is possible to reliably prevent the thickness of the concrete covering the reinforcing bars 3a from becoming thinner than T1 between the reinforcing ribs ₁ . In the above embodiment, the reinforcing ribs 1 are provided horizontally as the formwork 2, and the horizontal reinforcing bars 3a are arranged in a predetermined manner. In the case of using a reinforcing bar 3a, the relationship between the vertical reinforcing bars 3b and the horizontal reinforcing bars 3a in the embodiment shown in FIG. At the same time, the vertical reinforcing bars 3b are placed at a position that is shifted left and right along the formwork 2 from the position of the reinforcing rib 1 of the formwork 2 on the side where this reinforcing bar 3b is closer, that is, in a plane that passes through the reinforcing rib 1 and is perpendicular to the formwork 2. It is placed at a position shifted left and right from the

[Effects of the Invention] As described above, in the present invention, a pair of formworks each having a reinforcing rib protrudingly formed on one side are arranged facing each other with each reinforcing rib facing inward, and a reinforcing bar is placed between the formworks. When placing the reinforcing bars, the reinforcing bars parallel to the reinforcing ribs were placed so as to be offset from the plane perpendicular to the formwork passing through the reinforcing ribs, so the distance between the reinforcing bars and the formwork was The dimensions will not be reduced by the protruding dimension of the reinforcing ribs, and the thickness of concrete covering the reinforcing bars can be ensured without the need to set large gaps between forms, eliminating the need to increase concrete consumption. It's something that doesn't exist.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view of an embodiment of the present invention;
FIG. 2 is a partially cutaway perspective view of a conventional example. 1 is the reinforcing rib, 2 is the formwork. 3 is a reinforcing bar, 3a is a horizontal reinforcing bar, and 3b is a vertical reinforcing bar.

Claims (1)

[Claims] 1. A pair of formworks having reinforcing ribs formed in a protruding manner on one side are arranged facing each other with their respective reinforcing ribs facing inward, and in arranging reinforcing bars between the formworks, Arranging reinforcing bars between formwork for pouring reinforced concrete, characterized in that the reinforcing bars arranged parallel to the reinforcing ribs are arranged so as to be offset from the position of the plane perpendicular to the formwork passing through the reinforcing ribs. structure. 2. Reinforcing ribs are formed in the formwork in the vertical direction,
Between formworks for pouring reinforced concrete according to claim 1, characterized in that the height position of the horizontally arranged reinforcing bars is vertically shifted from the height position of the reinforcing ribs. Rebar arrangement structure. 3 Reinforcement ribs are formed in the formwork in the vertical direction,
The method of placing reinforcing bars between forms for placing reinforced concrete according to claim 1, characterized in that the reinforcing bars arranged vertically are arranged so as to be shifted from the position of the reinforcing ribs to the left and right. Arrangement structure.