JP2001123583A - Supporter for wire-mesh reinforcement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a supporter for a wire-mesh reinforcement, by which the wire-mesh reinforcement can be supported on slab forms under a connected state with the reinforcement, the wire-mesh reinforcement does not fall even when external force and vibrations are applied to the reinforcement and the wire-mesh reinforcement can be supported stably and firmly. SOLUTION: A reinforcement fitting groove 6, in which a top face is opened, is formed to the upper section of a supporter body 2 formed in a self-supportable shape by using a synthetic resin, reinforcement guide sections 8, 8 inclined in an outward spreading shape are formed on both sides of the upper section of the opening, reinforcement fitting recessed sections 9, 9, in which upper ends are opened, are formed to both-side reinforcement guide sections 8, 8, reinforcement supporting surfaces in the axial direction are ensured on the bases of the reinforcement fitting recessed sections 9, 9, and the wire-mesh reinforcement A is supported onto slab forms by holding the intersection section of the lower reinforcement (a) and upper reinforcement (b) of the wire-mesh reinforcement A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support for stably supporting a wire mesh reinforcing bar buried in concrete on a slab form during construction of a concrete slab.

[0002]

2. Description of the Related Art Concrete slabs are constructed by installing a slab formwork, arranging a wire mesh reinforcing bar on the upper surface of the slab, and embedding the wire mesh reinforcing bar in the cast concrete to improve the strength of the concrete slab. Is secured.

[0003] By the way, a wire mesh reinforcing bar is formed in a predetermined planar size by arranging a large number of reinforcing bars of, for example, 6 mmφ or less in a grid at predetermined intervals vertically and horizontally, and welding each intersection of the reinforcing bars. When it is arranged on a slab form, it must be placed horizontally, for example, with the height of 3 cm floating on the slab form.

Conventionally, in order to dispose the wire mesh reinforcing bar on a slab form, the upper and lower ends are flat and the height is 3 mm.
The reinforcing rods are formed at a suitable pitch on a slab form by using a reinforcing rod support formed in a circular axis of cm, and the wire mesh reinforcing bars are supported by the respective reinforcing rod supports.

[0005]

However, since the above-described conventional reinforcing bar support merely supports the wire mesh reinforcing bar on its upper surface, there is no bonding force between the two.
The support state of the wire mesh rebar is extremely unstable,
When external force or vibration is applied to the wire mesh reinforcing bar, the reinforcing bar support falls down, and there is a problem that a state occurs in which the support of the wire mesh reinforcing bar cannot be maintained.

Specifically, after placing a wire mesh reinforcing bar on a slab formwork, an operator puts on the wire mesh reinforcing bar, or when a concrete is poured, a concrete casting hose is placed on the wire mesh reinforcing bar. Since the vibration of the hose is applied to the wire mesh reinforcing bar, the reinforcing bar support easily falls down.

[0007] Accordingly, an object of the present invention is to enable the reinforcing member to be supported on a slab form in a state where the reinforcing member is connected to the wire mesh reinforcing member, so that the reinforcing member does not fall down even if external force or vibration is applied to the reinforcing member. An object of the present invention is to provide a wire mesh reinforcing bar support capable of stably and firmly supporting a reinforcing bar.

[0008]

In order to solve the above-mentioned problems, the invention according to claim 1 has a structure in which the upper surface of the support body formed from a synthetic resin so as to be self-supporting is higher than the inner surface. A rebar fitting groove is formed with a narrow width and opened over the entire length in the width direction, and a reinforcing bar guiding portion is provided on both upper sides of the opening so as to extend outwardly. In this case, a configuration is adopted in which a reinforcing bar support surface in the axial direction is secured on the bottom surface of the reinforcing bar fitting recess.

According to a second aspect of the present invention, in the first aspect of the present invention, the wall portions on both sides forming the reinforcing bar fitting groove provided in the upper part of the support body are provided when the reinforcing bar is inserted into the reinforcing bar fitting groove. Utilizing the elasticity of the synthetic resin, the rebar is allowed to press-fit through the opening, and is formed to a thickness that restores after passing, and the rebar guides are coupled so as to face upward from the upper ends of the wall portions on both sides. Further, a configuration is adopted in which a reinforcing-bar supporting wall is provided on the outer surface side of the reinforcing-bar guiding portion along the inner periphery of the reinforcing-bar fitting recess.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1A to 1E show the structure of the support, and FIGS. 2 and 3 show the relationship between the support and the wire mesh reinforcing bar. A wire mesh reinforcing bar A is formed by arranging a large number of lower reinforcing bars a in a lattice pattern with upper reinforcing bars b vertically and horizontally at predetermined intervals, and welding intersections of the upper and lower reinforcing bars a and b to a predetermined planar size. Is formed.

The support 1 has a support main body 2 made of a hard synthetic resin, and two leg plates 3, 3 having an integrated upper portion and a horizontal lower end are opposed to each other in a C-shape extending downward. The plates 3, 3 are joined by ribs 4 at the upper part of the opposing surfaces, and a semicircular cutout 5 is provided at the lower end of both leg plates 3, 3 so as to stand on the slab form B stably and self-supporting. ing.

A fitting groove 6 for the lower reinforcing bar a is formed in the upper part of the support body 2 and has an upper surface which is open at a smaller interval than the inside and extends over the entire length in the width direction, and both side walls on which the fitting groove 6 is formed. The portions 7, 7 allow the lower rebar a to press-fit through the opening by utilizing the elasticity of the synthetic resin when the lower rebar a is inserted into the rebar fitting groove 6, and are restored after passing the lower rebar a. Reinforcing bar guides 8, 8 are formed on both sides of the upper portion of the opening so as to extend outward from the upper ends of the wall portions 7, 7 and the upper surface is inclined outwardly. 8, 8
Are provided at the center in the width direction with fitting recesses 9, 9 of the upper reinforcing bar b which open at the upper end.

The fitting groove 6 of the lower rebar a is formed to have an inner diameter to which the lower rebar a just fits, and the fitting recesses 9 of the upper rebar b have the inner diameter to which the upper rebar b just fits. The upper opening is slightly narrower than the diameter of the upper reinforcing bar b, and is formed so as to elastically press-fit the upper reinforcing bar b. By providing arc-shaped reinforcing bar support walls 10, 10 along the inner circumference of 9, 9, an axial reinforcing bar supporting surface is secured on the bottom surface of the fitting concave portions 9, 9, and the supporting area of the upper reinforcing bar a is lengthened. Thereby, the upper rebar a can be stably supported.

The support according to the present invention has the above-described structure. The support 1 is installed on the slab form B at an interval of, for example, about 900 mm, and the wire mesh reinforcing bar A is disposed thereon. The wire mesh reinforcing bar A is horizontally arranged on the slab form B by supporting the intersection between the upper reinforcing bar b and the lower reinforcing bar a of the reinforcing bar A with the support 1.

In order to support the wire mesh reinforcing bar A with the support 1, as shown in FIG. 2, a lower reinforcing bar a is placed between the two reinforcing bar guides 8 of the support 1 standing on the slab form B. Put on,
In a state where the upper rebar b faces directly above the fitting concave portions 9 provided in the rebar guide portions 8, 8, the wire mesh rebar A
When the point of intersection of the upper rebar b and the lower rebar a is pressed from above,
The lower rebar a is guided by the inclination of both rebar guides 8 and 8 and enters the opening, and the wall portions 7 and 7 on both sides push out and open the opening by escaping outward, and fit into the fitting groove 6. Then, the upper reinforcing bar b is fitted into the fitting recesses 9 by pushing the upper opening thereof.

When the lower reinforcing bar a is fitted into the fitting groove 6, the wall portions 7, 7 on both sides are restored by the elasticity of the synthetic resin, whereby the fitting groove 6 elastically holds the lower reinforcing bar a. The fitting recesses 9 and 9 elastically hold the upper reinforcing bar b,
The support 1 and the wire mesh reinforcing bar A are fixed, and as shown in FIG. 3, the wire mesh reinforcing bar A can be arranged horizontally while floating on the slab form B by a predetermined height.

The wire mesh reinforcing bar A by the support 1
In the supporting portion, the lower reinforcing bar a is supported by the entire length of the fitting groove 6 and the upper reinforcing bar b is supported by the fitting recesses 9 on both sides. Since the arc-shaped rebar supporting walls 10 and 10 are provided, the rebar supporting surface in the axial direction can be ensured, whereby the support 1 can be moved in the length direction of the lower rebar a and the length direction of the upper rebar b. In any case, the standing strength is improved, and the wire mesh reinforcing bar A
Even if external force or vibration is applied to the slab, the support 1 does not fall down, the wire mesh reinforcing bar A can be securely placed on the slab form B, and then the concrete is cast to achieve a predetermined performance. It becomes possible to form a concrete slab.

[0018]

As described above, according to the present invention, a reinforcing bar whose upper surface is narrower than the inside and is open over the entire length in the width direction is provided at the upper portion of the support body formed to be self-supporting by using a synthetic resin. A fitting groove is formed, and a reinforcing bar guiding portion is provided on both upper sides of the opening. The reinforcing bar guiding portion is formed to be open at the upper end, and the wire mesh reinforcing bar is pushed in from above. Alone, the intersection of the lower and upper rebars can be held, and the wire mesh rebar can be supported on the slab formwork with a predetermined height by a simple operation. Since the reinforcing bar support surface in the axial direction is secured on the bottom surface of the concave portion, the support tool has improved standing strength in both the longitudinal direction of the lower reinforcing bar and the longitudinal direction of the upper reinforcing bar, and the wire mesh reinforcing bar External force or vibration Without also as support falls down, the arrangement of wire mesh reinforcement of the slab form on reliably performed, the formation of concrete slabs having a predetermined performance can be realized.

[Brief description of the drawings]

1 (A) is a front view of a support, FIG. 1 (B) is a side view thereof,
(C) is a plan view, (D) is a bottom view, and (E) is a longitudinal side view.

FIG. 2 is an exploded perspective view of a support and a wire mesh reinforcing bar.

FIG. 3 is a longitudinal sectional view showing a state in which a wire mesh reinforcing bar is supported on a slab form by a support tool.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Supporting tool 2 Supporting tool main body 3 Leg plate 6 Reinforcement fitting groove 7 Wall part 8 Reinforcement guiding part 9 Reinforcement fitting concave part 10 Reinforcing rod support wall A Wire mesh rebar a Lower rebar b Upper rebar

Claims (2)

[Claims] 1. A rebar fitting groove having an upper surface having a width smaller than that of an inner portion and opening over an entire length in a width direction is formed in an upper portion of a support body formed to be self-supporting using a synthetic resin;
Reinforcing bars are provided on both sides of the upper portion of the opening so as to extend outwardly. Reinforcing bars are provided at the upper ends of the reinforcing bars on both sides, and a reinforcing bar supporting surface in the axial direction is provided on the bottom surface of the reinforcing bar. A support for a wire mesh reinforcing bar, comprising: 2. Reinforcing bars are formed by utilizing the elasticity of a synthetic resin when the reinforcing bars are inserted into the reinforcing bar fitting grooves when the reinforcing bars are inserted into the reinforcing bar fitting grooves. Is formed to a thickness that allows press-fit
The reinforcing bar guiding portion is coupled so as to face upward from the upper end of the wall portion on both sides, and a reinforcing bar supporting wall is provided on the outer surface side of the reinforcing bar guiding portion along the inner periphery of the reinforcing bar fitting recess. The wire mesh reinforcing bar support according to claim 1.