JP2536969Y2 - Reinforcement for cylindrical shell structure - Google Patents

Description

[Detailed description of the invention] << Industrial application field >> This invention relates to a reinforcing material for a cylindrical shell structure such as a ground tank.

<< Prior Art >> As is well known, when constructing a cylindrical shell structure such as a ground tank or a chimney, a reinforcing bar is embedded as a reinforcing material in a concrete wall.

In this type of cylindrical shell structure, since the wall is formed in a circular shape, the reinforcing steel is naturally formed in a circular shape along this shape.

In this case, assembling the reinforcing bars in advance in a circular cage shape was bulky and was cumbersome to transport, so it was usually performed on site, but there were the following technical problems at this time. Was.

<< Problem to be Solved by the Invention >> That is, when assembling the reinforcing steel on site, the reinforcing steel in the hoop direction is processed into an arc shape, and this is fixed to the vertical reinforcing steel in the vertical direction by welding or the like.

However, with such assembling means, it is difficult to process the reinforcing bar into an arc shape when the reinforcing bar is long and thick, and a hoisting machine or the like is required for the handling thereof, and the assembling is troublesome. I was

The present invention has been made in view of such conventional problems, and an object of the invention is to provide a reinforcing material for a cylindrical shell structure that is easy to process and assemble.

<< Means for Solving the Problems >> In order to achieve the above object, the present invention relates to a reinforcing material embedded in a concrete wall of a cylindrical shell structure such as a ground tank, wherein the reinforcing material is provided in a plurality in a circumferential direction. The block is composed of a pair of vertical members arranged at both ends, and a plurality of arc-shaped flat members having both ends fixedly provided between the vertical members and arranged in a stepwise manner in the horizontal direction. It is characterized by comprising a thin plate.

The vertical member may be formed of a steel member having a U-shaped cross section, and a joint may be provided for connecting the vertical members which are forged in the circumferential direction at intervals in the vertical direction.

<< Operation >> According to the cylindrical shell structure reinforcing material having the above configuration, the members arranged in the hoop direction are made of flat thin plates, so that they can be easily processed into an arc shape, and the flat thin plates can be assembled at the assembly site. It can be rolled up and transported.

In addition, since the reinforcing material of the present invention is composed of blocks divided in the circumferential direction, the flat thin plate arranged in the hoop direction can be significantly shorter than the conventional one, and its handling is easy. Become.

<< Embodiment >> Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 4 show an embodiment of a reinforcing material for a cylindrical shell structure according to the present invention.

As shown in FIG. 1, a reinforcing member 10 shown in FIG. 1 is buried in a concrete wall 12 of a cylindrical shell structure, and the reinforcing member 10 shown in this embodiment is divided into eight in the circumferential direction. Block 14.

Each block 14 includes a pair of vertical members 1 arranged at both ends.
6, 16 and a plurality of arc-shaped flat thin plates 18, 18 having both ends fixedly provided between the vertical members 16 and arranged in a stepwise manner in the horizontal direction.

In this embodiment, the vertical member 16 is made of a steel material having a U-shaped cross section, and its outer end face side is a joint between adjacently arranged members in the circumferential direction. Holes 20 for mutual connection by nuts are bored at intervals in the vertical direction.

On the other hand, the flat thin plate 18 is usually called a flat bar, and the flat thin plate 18 is transported in a roll state to a construction site, and cut according to the length of the block 14 formed at the construction site. Then, both ends are fixed to the side surface of the vertical member 16 by welding or the like.

In this embodiment, two flat thin plates 18 are formed as a set, and they are fixed so as to sandwich both side surfaces of the vertical material 16, and a space is maintained between the flat thin plates 18 in the vertical and horizontal directions. Material 22 is arranged.

The reinforcing material 10 of the present invention configured as described above has a hole 20
Are joined to each other by bolts and nuts at portions adjacent to each other in the circumferential direction and are embedded in the wall 12.

At this time, as shown in detail in FIG. 4, it is desirable that the reinforcing plate 24 is fixed to the joint portion from both side surfaces so as to extend between the vertical members 16.

The blocks 14 can be connected not only in the circumferential direction but also in the vertical direction.

When vertical reinforcement is required, a required amount of steel material may be evenly arranged in the block 14.

<< Effects of the Invention >> As described in the above embodiments, in the reinforcing material for a cylindrical shell structure according to the present invention, by using a flat thin plate, the reinforcing material can be easily blocked, and the conventional reinforcing steel can be used. Construction efficiency is improved as compared to rebar arrangement work.

In addition, the flat thin plate can be easily curved, and can be rolled and transported to a construction site, so that a long block can be easily manufactured.

Furthermore, the block-shaped reinforcing member can be assembled in a ring shape by joining only the vertical members, so that the construction efficiency is also improved in this respect.

[Brief description of the drawings]

FIG. 1 is a plan view of a cylindrical shell structure using the reinforcing material of the present invention, FIG. 2 is a perspective view of a block of the reinforcing material of the present invention, FIG. The figure is an enlarged view of the joining portion in FIG. 10 Reinforcement 12 Wall 14 Block 16 Vertical 18 Flat sheet

Claims (2)

(57) [Scope of request for utility model registration] 1. A reinforcing member embedded in a concrete wall of a cylindrical shell structure such as a ground tank, wherein the reinforcing member is constituted by a plurality of blocks divided in a circumferential direction,
This block has a pair of vertical members arranged at both ends,
A reinforcing material for a cylindrical shell structure, comprising a plurality of arc-shaped flat thin plates having both ends fixedly provided between these vertical members and arranged in a stepwise manner in a horizontal direction. 2. The vertical member according to claim 1, wherein the vertical member is formed of a steel material having a U-shaped cross section, and a joint portion is provided for connecting the vertical members adjacent to each other in the circumferential direction at intervals in the vertical direction. The reinforcing material for a cylindrical shell structure according to claim 1, wherein: