JPH08302902A - Sleeve reinforcing structure - Google Patents

Abstract

PURPOSE: To eliminate the need for any special positioning or reinforcement when incorporating a sleeve into a reinforcing bar arrangement by integrating a reinforcing projection on the outer peripheral surface on the end of the sleeve. CONSTITUTION: A pair of reinforcing bars 12, which are bent in semicircular shape along the outer peripheral shape of a sleeve, are preliminarily integrated by welding 14 on the outer peripheral part on both ends of a sleeve 10 comprising a steel pipe or the like about at two locations, which makes it possible to construct the sleeve 10 in a floating state in the air with both ends 12a of each reinforcing bar 12 as a leg. This installation height is set as a mounting height of a cage 16. Then, the sleeve 10 is laid out so that it may cross the longitudinal direction of the cage 16 which is preliminarily assembled in rectangular shape in cross section. Both ends 12a of each reinforcing bar 12 are arranged to cross upper and lower main reinforcing bars 16a or vertical bars 16b in the cage 16 while their crossing areas are bundled with an annealing wire or welded, thereby ending fixing work after the sleeve 10 is aligned.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing structure for a sleeve positioned inside a reinforcing bar assembly.

[0002]

2. Description of the Related Art When arranging a sleeve for passing wiring or piping for electric or sanitary equipment through a rebar assembly, conventionally, as shown in FIGS. Determine the position and install the reinforcing bar 2 around the sleeve 1 in the shape of a cross girder or diagonal cross girder, connect the intersecting end of the reinforcing bar 2 with the main bar 3 by a number line or welding, and then place concrete. Are integrated in.

[0003]

When assembling the sleeve arranged to penetrate through the seed reinforced concrete, not only the reinforcing bar but also a plurality of industries such as wiring and plumbers are involved in the mounting of the sleeve 1, and therefore, the meeting is not carried out. It may be insufficient.

For this reason, there are many mistakes such as finishing the assembling of the reinforcing bar without forgetting the sleeve at a predetermined position and forgetting the reinforcing work for positioning. In this case, it is bent at a later time by additional work. There is a possibility that the sleeve 1 may be arranged in the structure by forming a hole, or the bypass portion may be provided to perform piping of the sleeve, which is different from the design specification.

It is an object of the present invention to provide a sleeve reinforcing structure that does not require special positioning or reinforcement when the sleeve is assembled into a reinforcing bar assembly.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a reinforcing projection, which also serves as a positioning member, is integrated in advance at least on the outer periphery of the end portion of the sleeve, and the sleeve is positioned and arranged at the rebar assembly position. It is characterized in that it is connected to the reinforcing bar side (Claim 1).

It is preferable that the reinforcing protrusion is formed by integrating a middle portion of a reinforcing bar bent in a semicircular shape along an outer peripheral shape of the sleeve with an outer periphery of an end portion of the sleeve (claim 2).

[0008]

When the sleeve is incorporated in the reinforcing bar, the reinforcing projection contacts the reinforcing bar and is held in this position. Therefore, by fixing the end portion of the reinforcing projection to the reinforcing bar, the positioning and fixing work of the sleeve is completed.

[0009]

FIG. 1 shows a sleeve according to the present invention. This sleeve 10 is made of steel pipe or the like,
At least the outer circumferences of both ends of the sleeve 10 are bent into a semicircular shape along the outer circumference of each of the pair of reinforcing bars 1.
Two of them are previously integrated by welding 14 at about two places. Therefore, the sleeve 10 can be installed horizontally with the both ends 12a of each reinforcing bar 12 as the legs in a state of floating in the air. Is set at the mounting height position for the rebar cage.

A sleeve 10 reinforced by reinforcing bars 12.
Is arranged so as to intersect with the longitudinal direction of the reinforcing bar cage 16 which is assembled in advance in a horizontally long rectangular cross section as shown in FIG. 2, for example,
Both ends 12a of each reinforcing bar 12 intersect with the upper and lower main bars 16a or the vertical bars 16b of the reinforcing bar cage 16. Therefore, by binding this intersection with a numbered wire or welding it,
The fixing work after the positioning of the sleeve 1 is completed.

After that, a formwork is installed and concrete is poured to obtain a horizontally long concrete structure which penetrates the sleeve 10 in the orthogonal direction.

FIG. 3 shows another embodiment of the reinforcing structure of the sleeve 10. In this embodiment, as the reinforcing protrusion,
Instead of the reinforcing bar 12, shear connectors 18, 18 are adopted. In FIG. 3, the shear connectors 18 and 18 are sleeves 10.
It is shown that a large number are formed on the outer periphery of the sleeve 10 at substantially the same pitch, but also along the longitudinal direction of the sleeve 10, a large number are formed at substantially the same pitch as the circumferential pitch. In this case, of course, the pitch in the longitudinal direction of the sleeve 10 may be longer than the pitch in the circumferential direction.

FIGS. 4A and 4B show still another embodiment of the reinforcing structure of the sleeve 10. First, in (a), a plurality of reinforcing discs 20 are fitted in advance to the outer circumference including both ends of the sleeve 10, and the fitting parts are integrated with the sleeve 10 by welding. The plurality of holes 20a formed in each reinforcing disk 20 are opened to maintain the fluidity of concrete. In this embodiment, if the reinforcing disks 20 at both ends are welded to the main bars of the reinforcing bar cage, the positioning and fixing of the sleeve 10 and the opening reinforcing work are completed.

Further, in (b), a plurality of linear reinforcing bars 22 are radially projected on the outer circumference of both ends of the sleeve 10 by means such as welding or bolting, and the reinforcing bars 22 are concentric with the sleeve 10. They are connected by a reinforcing ring 24 made of rebar that is bent in a shape.

In this embodiment, by connecting and fixing the crossing end of the reinforcing bar 22 with the end reinforcing bar, the positioning and fixing of the sleeve 10 and the reinforcing work can be performed at the same time.

[0016]

According to the reinforcing structure of the sleeve according to the present invention, when the sleeve is incorporated in the reinforcing bar, the reinforcing projection comes into contact with the reinforcing bar and is held at this position, and the end portion of the reinforcing projection is fixed to the reinforcing bar. Since the positioning and fixing work of the sleeve is completed, no special positioning or reinforcement is required when assembling the sleeve into the reinforcing bar assembly, and it is possible to prevent mistakes such as forgetting the positioning reinforcement work due to insufficient meetings in multiple industries. it can.

[Brief description of drawings]

FIG. 1 is a perspective view showing a reinforcing structure for a sleeve according to the present invention.

FIG. 2 is a side view showing a state where the sleeve is incorporated in a reinforcing bar cage.

FIG. 3 is an explanatory diagram showing another embodiment.

FIG. 4A and FIG. 4B are explanatory views showing still another embodiment.

5 (a) and 5 (b) are side views showing a conventional sleeve reinforcing structure.

[Explanation of symbols]

10 Sleeves 12, 20, 22 Reinforcing protrusions (12, 22 Reinforcing bars,
20 Reinforcement disk) 16 Reinforcing bar basket 16a Main bar 16b Longitudinal bar

Claims (2)

[Claims] 1. A reinforcing structure for a sleeve, characterized in that a reinforcing protrusion is integrated with at least an outer periphery of an end portion of the sleeve. 2. The reinforcing protrusion is characterized in that the intermediate portion of a reinforcing bar bent in a semicircular shape along the outer peripheral shape of the sleeve is integrated with the outer periphery of the end portion of the sleeve. The reinforcing structure of the sleeve according to 1.