JPH0732711Y2 - Rebar concrete construction spacer - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention relates to a spacer for reinforced concrete construction,
More specifically, the present invention relates to a spacer that supports a reinforcing bar in a levitated state during a reinforcing bar arrangement.

<Prior art> Conventionally, in reinforced concrete construction, in order to remove the fog of concrete, it has been carried out to support the reinforcing bar in a levitated state using a spacer.As a spacer for supporting this reinforcing bar, a metal bar is used. It is provided that the lower end portion of the formed four-leg bearing leg is coated with a resin for corrosion prevention, or that a resin cap is fitted.

<Problems to be Solved by the Invention> The resin-coated product has a problem that a reliable anticorrosion effect cannot be expected because the coating is thin and easily peeled off.

In addition, since the resin cap has a poor adhesion to the concrete matrix, there is a problem that the cap may fall off or a gap may be formed between the resin matrix and the concrete matrix, resulting in water permeable corrosion.

<Purpose> The present invention has been made in view of the above problems, and an object of the present invention is to provide a spacer for reinforced concrete construction which has excellent adhesion to a concrete matrix and can exhibit a reliable corrosion prevention effect.

<Means for Solving Problems> As a spacer for reinforced concrete construction of the present invention for achieving the above object, a metal support leg for supporting the reinforcing bar in a levitating state is formed in a double leg shape, and the supporting leg of the supporting leg is formed. A block body made of concrete or mortar that covers the lower end portion is individually provided at each lower end portion.

<Operation> According to the reinforced concrete construction spacer having the above configuration, the respective lower end portions of the double leg bearing legs are covered with the individual block bodies made of concrete or mortar,
Corrosion of the support leg can be prevented, and the integrity of the block body and the concrete base material can be secured well.

<Embodiment> An embodiment will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a partially cutaway perspective view showing a reinforced concrete construction spacer [1] of the present invention. The spacer [1] is a support leg [2] made of a metal bar material, and a block body [1] integrated with the lower end of the support leg [2] so as to cover the lower end of the support leg [2]. 3] and

The above-mentioned supporting leg [2] is a double-legged one formed by bending a metal bar material in a gate shape, and the upper part of the leg is flared (2a).
The center of the is bent and bent so that the reinforcing bar (T) can be placed stably.

On the other hand, the block body [3] provided at the lower end of the spacer [1] is entirely cast-molded with concrete or mortar, and the overall shape is as shown in the figure.
It is formed in a so-called inverted truncated cone shape. The bottom surface of the block body [3] has a sufficient area for holding the support leg [2] in the upright state. Then, each of the block bodies (3) is integrated with the support leg [2] in a state where the lower ends of the double leg support legs (2) are introduced to a predetermined depth.

With the above configuration, in reinforcing bar construction, the reinforcing bar (T) can be supported in a levitated state by, for example, sequentially interposing a spacer [1] between the membrane plate and the reinforcing bar (T). it can. At this time, the support leg [2] can be erected with good stability by the block body [3].

Further, as shown in FIG. 2, when the spacer [1] is embedded in the concrete matrix (C), rust is generated at the lower end of the support leg [2] and the block [3]
Can be surely prevented. That is, since the block body [3] is made of concrete or mortar having good adhesion to the concrete matrix (C), and good integration with the concrete matrix (C) can be ensured. ) And the block body [3], a good waterproof property can be secured, and rust can be surely prevented from occurring on the support leg [2].

Moreover, since the supporting leg [2] is a double leg, and the individual block bodies (3) are provided at the lower ends of the supporting legs (2), the conventional four-legged or large block is used. Compared to a body in which the lower ends of the two legs are embedded in common, the manufacturing is easier, the cost is reduced, the weight is reduced, and the construction efficiency can be improved.

The above-mentioned spacer [1] is formed to have various heights according to the reinforcing bar height, and the side surface of the block body [3] is also tapered to form the block body [3]. It is appropriately set in consideration of ease of die-cutting at the time, stability during use, and integrity with concrete after concrete construction.

As the spacer [1] of the present invention, for example, concrete or mortar is poured into a casting formed of synthetic resin foam, and the supporting leg [2] is inserted into the poured concrete or mortar. It can be easily manufactured by solidifying the concrete or mortar.

The spacer for reinforced concrete construction of the present invention is not limited to the above-mentioned embodiment, and for example, the entire shape of the block body [3] is formed into a polygonal columnar shape such as a square column, a hexagonal column or the like. Doing, block body [3]
Can be fitted to the lower end of the supporting leg [2] through a synthetic resin embedded sleeve [4] (see FIG. 3), etc., and various design changes can be made within the scope of the invention. it can.

<Effect> As described above, according to the spacer for reinforced concrete construction of the present invention, each lower end portion of the support leg having a double leg shape is covered with an individual block body, and the block body is formed small. It is lightweight and easy to handle, and construction can be done more efficiently.Because each block is made of concrete or mortar, the block and the concrete base can be integrated well, so It is possible to surely prevent water from penetrating into the lower end portion, and it is possible to exert a good practical anticorrosion effect on the support leg.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the spacer of the present invention, FIG. 2 is a sectional view showing a usage state, and FIG. 3 is a sectional view showing a main part of another embodiment. [1] …… Spacer, [2] …… Supporting leg [3] …… Block body, (T) …… Reinforcing bar

Claims (1)

[Scope of utility model registration request] 1. A metal support leg for supporting a reinforcing bar in a levitated state is formed in a double leg shape, and a block body made of concrete or mortar for covering the lower end portion is individually provided at each lower end portion of the support leg. Spacer for reinforced concrete construction characterized by