JPH11256570A - Concrete pile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate bar arrangement of tie hoops for shearing reinforcement and construction at low spatial head by arranging tie hoops for shearing reinforcement for resisting the shearing force inside the axial reinforcing bar, and disposing tie hoops for assembling outside the axial reinforcing bar. SOLUTION: Tie hoops 5 for shearing reinforcement are bound by a connecting wire, and dropped inside the axial reinforcing bars 1 to enable arrangement of bars. The tie hoops 5 for shearing reinforcement are spiral reinforcing bars and dropped inside the axial reinforcing bars to save the trouble of binding by a connecting wire. Further, in the case where the tie hoops 5 for shearing reinforcement are corrugated pipes, they are just dropped inside the axial reinforcing bars 1 to accomplish bar arrangement work. These reinforcing bars 5 can be compressed and combined with the flexible axial reinforcing bars 1 to perform arrangement of bars in a space with the low spatial head. Thus, assembling of reinforcing bars can be facilitated, the cost can be reduced, and the term of works can be shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel cage used for a concrete pile, and more particularly to a concrete pile which facilitates installation of a reinforcing steel band for shear reinforcement.

[0002]

2. Description of the Related Art In a concrete pile, both a shear reinforcing steel bar for resisting shearing force and an assembling steel bar for fixing an axial reinforcing steel are arranged so as to surround the axial reinforcing steel. It is common to have a basket shape. FIG. 5 is a view for explaining such a conventional reinforcing bar cage, in which a circular assembling reinforcing bar 2 is fixed to an axial reinforcing bar 1 at a pitch of 2 to 3 m, and a shear reinforcing reinforcing bar 3 at a pitch of about 200 mm. Is fixed. In this case, the shear reinforcing reinforcing bar 3 and the assembling reinforcing bar 2 are previously processed into a circular shape, and the contact points between these and the axial reinforcing bar 1 are fixed by a binding wire or the like.

[0003]

However, in the method of arranging the reinforcing bar as shown in FIG. 5, the assembling of the reinforcing bar and the binding with the axial reinforcing bar are often performed manually.
It is costly. In addition, in the construction of cast-in-place concrete piles, it is conceivable to place the axial reinforcing bar and then drop the band reinforcing bar, but in the conventional structure where the band reinforcing bar is arranged outside the axial reinforcing bar, It is necessary to drop between the pile and the pile outer diameter, and there is a problem that the strip reinforcing bar gets caught on the axial reinforcing bar.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to facilitate arrangement of a reinforcing steel bar for shear reinforcement and to enable a low head construction.

[0005]

According to the first aspect of the present invention,
The present invention is characterized in that a shear reinforcing reinforcing bar for resisting shearing force is disposed inside the axial reinforcing bar, and the assembling reinforcing bar is disposed outside the axial reinforcing bar. The invention according to claim 2 is characterized in that the shear reinforcing band reinforcing bars are connected by connecting wires for each length of the arrangement interval. The invention according to claim 3 is characterized in that the shear reinforcing reinforcing bar is a spiral reinforcing bar. The invention according to claim 4 is characterized in that the shear reinforcing steel strip is a corrugated pipe.

[0006]

Embodiments of the present invention will be described below. FIG. 1 is a view for explaining the arrangement of reinforcing bars in the concrete pile of the present invention. In the concrete pile, the reinforcing bar for resisting the shearing force does not necessarily have to be disposed outside the axial reinforcing bar even in view of its function. Therefore, in FIG. 1, the structure is such that the shear reinforcing strip 5 for resisting the shearing force is arranged inside the axial reinforcing bar 1, and only the assembling strip reinforcing bar 2 is arranged outside the axial reinforcing bar 1. . With such a structure, the axial reinforcing bar 1
Are bound by the assembling reinforcing bars at a predetermined interval, the shear reinforcing reinforcing bars 5 only have to be dropped into the inside thereof, so that the rebar arrangement work becomes extremely easy.

[0007] For example, as shown in FIG. 2, if the shear reinforcing steel bars 5 are bound by connecting wires 6, the reinforcing bars can be arranged simply by dropping them inside the axial reinforcing bar 1.
Alternatively, as shown in FIG. 3, if the shear reinforcing bar 5 is a spiral reinforcing bar, the reinforcing bar can be arranged simply by dropping it inside the axial reinforcing bar 1, and the connecting bar shown in FIG. You can save the trouble of connecting with the line. In addition, as shown in FIG. 4, if the shear reinforcement band reinforcing steel is a corrugated pipe, the reinforcing work is performed simply by dropping it inside the axial reinforcing steel 1. Furthermore, since these rebars can be compressed, they can be arranged in a low head space by combining them with flexible axial rebars.

[0008] It should be noted that, as the material used for these shear reinforcing reinforcing bars, those having a shape and material other than the band reinforcing bar can be used as long as they can resist the shearing force. By separating the axial reinforcing bar and the shear reinforcing bar in this way, their arrangement can be performed separately.

[0009]

As described above, according to the present invention, only the binding of the reinforcing bar and the axial reinforcing bar is performed, so that the reinforcing bar can be easily assembled, and the cost can be reduced and the construction period can be shortened. Also, in the construction of cast-in-place concrete,
By dropping the compressible shear reinforcing bars from the pile head to the inside of the axial bars, the shear reinforcing bars can be easily arranged, and a low altitude can be obtained by combining flexible axial bars. Construction with the head is also possible.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining the reinforcement arrangement of a concrete pile according to the present invention.

FIG. 2 is a diagram illustrating an example of a shear reinforcement bar.

FIG. 3 is a view showing another example of a shear reinforcing steel bar.

FIG. 4 is a view showing another example of a shear reinforcing bar.

FIG. 5 is a view for explaining a reinforcing bar arrangement of a conventional concrete pile.

[Description of Signs] 1 ... Axial reinforcing bar, 2 ... Reinforcing bar, 5 ... Strip reinforcing bar for shear reinforcement.

Claims (4)

[Claims] 1. A concrete pile in which a shear reinforcing bar for resisting shearing force is disposed inside an axial reinforcing bar, and an assembling reinforcing bar is disposed outside the axial reinforcing bar. 2. The concrete pile according to claim 1, wherein said shear reinforcing steel bars are connected by connecting wires at every arrangement interval. 3. The concrete pile according to claim 1, wherein said shear reinforcing reinforcing steel bar is a spiral reinforcing steel bar. 4. The concrete pile according to claim 1, wherein said shear reinforcing steel strip is a corrugated pipe.