JPH07113249B2 - Structure of rebar cage and method of assembling - Google Patents

Description

TECHNICAL FIELD The present invention relates to a structure of a rebar cage used for a pillar of a structure and a method of assembling the same.

"Prior Art" Generally, a reinforcing steel cage used for an underground continuous wall or the like is designed as a double reinforcing steel section. However, since this rebar cage is located underground, it is impossible to assemble the rebar manually at the work site. For this reason, it is preassembled on the ground as a rebar cage and installed using a crane.

Since the rebar cage is a double rebar, it is basically composed of two rebar nets, but it can be built together without being deformed so that structural rebars and partition nets Besides, it is configured by being reinforced by various rebars for assembling, shaped steel, shaped steel for hanging jigs, and the like.

[Problems to be Solved by the Invention] In the conventional reinforcing bar cage, a large amount of labor, assembling, and a reinforcing steel material are required to assemble and process the reinforcing bar cage, which is disadvantageous in terms of cost and construction period.

In addition, since the weight of the rebar cage increases, a large crane is required at the time of construction, which makes it difficult not only to secure a place to install the crane for construction in a narrow space such as the center of the city, but also for heavy equipment costs. I'm going out.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a structure of a rebar cage that is easy to assemble and a method for assembling the same.

"Means for Solving the Problem" The first aspect of the structure of the reinforcing steel cage of the present invention is to provide a plurality of vertical reinforcing bars extending in the height direction of the structure and a predetermined interval in the horizontal direction between these vertical reinforcing bars. While holding in, a pair of horizontal frame members provided with bolt members protruding laterally at both ends thereof, a plurality of horizontal reinforcing bars extending in the width direction of the structure,
It is provided with a pair of vertical frame members that hold these horizontal rebars at predetermined intervals in the height direction, and the pair of horizontal frame members and the vertical frame members respectively have the external box shape in the state of holding the vertical rebar and the horizontal rebar. To form a rebar net, and a plurality of the rebar nets are arranged to face each other with a predetermined gap therebetween, and are composed of a plate member extending in the height direction and a connecting member extending in the horizontal direction. The fixing frame is fixed to the bolt member of the horizontal frame member.

A second aspect of the structure of the reinforcing steel cage of the present invention is characterized in that the horizontal frame member and the vertical frame member are previously integrally formed.

A method for assembling a reinforcing bar car according to the present invention includes a plurality of vertical reinforcing bars and a plurality of horizontal reinforcing bars, a pair of horizontal frame members provided with bolt members projecting laterally at both ends, and a pair of vertical frame members. And a rebar net is formed by holding with, and a plurality of rebar nets are arranged to face each other with a predetermined interval, and are composed of a plate member extending in the height direction and a connecting member extending in the horizontal direction. The fixing frame is fixed to the bolt member.

[Examples] Hereinafter, regarding the reinforcing bar cage of the present invention and the assembling method thereof,
A description will be given with reference to the drawings.

As shown in FIG. 1, the rebar cage 1 of this embodiment is composed of a pair of rebar nets 3 and 3 that are arranged to face each other and are fixed by fixing frames 10 and 10 at predetermined intervals.

As shown in FIG. 1 and FIG. 2, the net reinforcing bar 3 holds a plurality of vertical reinforcing bars 4 extending in the height direction of the structure, and holds these vertical reinforcing bars 4 at predetermined intervals in the horizontal direction. A pair of horizontal frame members 5 and a plurality of horizontal reinforcing bars 6 extending in the width direction of the structure
And a pair of vertical frame members 7 that hold the horizontal reinforcing bars 6 at predetermined intervals in the height direction.

As shown in FIG. 3, stud bolts (bolt members) 5a are provided on both end surfaces of the horizontal frame member 5 in a form protruding laterally. Further, a plurality of U-shaped fasteners 5b for fixing the vertical reinforcing bars 4 are provided on the side surface of the horizontal frame member 5. A joint joint 8 with the horizontal frame member 5 is formed on the side of the vertical frame member 7 as shown in FIG.
An insertion hole (not shown) for inserting the stud bolt 5a is formed in the.

The pair of horizontal frame members 5 and 5 and the vertical frame members 7 and 7 are formed by being joined in a box-like appearance while holding the vertical reinforcing bars 4 and the horizontal reinforcing bars 6, respectively.

Further, a vera sheet (not shown) is attached to the vertical frame member 7 so as to cover the reinforcing bar net 3.

Note that the horizontal frame member 5 and the vertical frame member 7 may be made of precast products that are integrated in advance.

The fixed frame 10 is a member for fixedly supporting the vertical frame members 7 of the reinforcing bar nets 3 and 3 at a predetermined interval and, as shown in FIGS. 2 and 3, a flange plate (plate member) 11
And an external L-shaped connecting angle (connecting member) 13.

The flange plate 11 is provided so as to extend in the height direction of the rebar net 3, and the connecting angle 13 is provided so as to project to the side of the rebar net 3. Further, a plurality of bolt insertion holes (not shown) are formed at the side end of the connecting angle 13 at predetermined intervals. The two fixed frames 10 thus constructed are used as a set, and the nut 17 is fastened to the stud bolt 5a with the mesh sheet 15 sandwiched between them.

When assembling the rebar cage of this embodiment, for example, as shown in FIG. 5, two rebar nets 3 are connected to a lifting machine 2 such as a crane.
0, hoisted by wire 21 and placed facing each other,
The reinforcing bar nets 3 are fixedly supported and assembled by inserting the stud bolts 5a of the lateral frame member 5 into the fixed frame 10 and fastening the nuts 17 to the fixed frame 10 with a predetermined gap.

When the rebar cage 1 of this embodiment is used, the rebar cage is constructed at the constructing position of the structure as described above, and concrete is placed on the rebar cage 1 to construct the pillars of the structure. At this time, the concrete sheet is prevented from flowing out by the mesh sheet 15 and the vera sheet provided so as to cover the periphery of the rebar cage 1.

According to the structure of the reinforcing cage and the assembling method thereof according to the present invention,
The following excellent effects can be achieved.

It is relatively easy to hang up the reinforcing bar net 3 which is the main part of the reinforcing bar car 1 as a single body, and to erected it at the installation position of the reinforcing bar car.

Further, by disassembling the constituent members other than the reinforcing bar net 3 into respective constituent elements, precasting each of them, and attaching them at the present position, it becomes possible to reduce the reinforcing steel material. Then, by reducing the reinforcing steel material when assembling the reinforcing bar car 1, it is possible to achieve the assembling and processing efficiency of the reinforcing bar car 1, labor saving and manufacturing cost reduction, and shortening of the assembly process.

Moreover, since the rebar cage 1 can be assembled only by assembling the fixed frames 10, 10 between the rebar nets 3, 3, the assembly can be performed easily and quickly. Also, rebar net 3
Since the stud bolts 5a are provided at both ends of the horizontal frame member 5, the stud bolts 5a can be inserted into the fixed frame 10 and the nuts 17 can be tightened without performing work such as welding. The reinforcing frame 1 can be assembled by connecting with the fixed frame 10. Moreover, at the time of the work, the worker can perform the work of tightening the nut 17 and the work of assembling the rebar cage 1 with one hand, and also use the preassembled fixed frame 10 as a ladder and the connecting angle 13 as a foothold. As you can climb on this and do the work.

In addition, since the weight of the rebar cage 1 is reduced, it is possible to downsize cranes and other lifting machines required for construction, and it is relatively easy to install cranes in narrow spaces, reducing heavy equipment costs. be able to.

It is needless to say that the structure of the reinforcing bar car of the present invention is not limited to the structure of the above embodiment in its detailed structure, and other modified examples can be appropriately adopted.

"Effects of the Invention" The structure of the reinforcing bar cage of the present invention includes a plurality of vertical reinforcing bars extending in the height direction of the structure, and holding these vertical reinforcing bars horizontally at predetermined intervals, and at both ends thereof. A pair of horizontal frame members provided with laterally projecting bolt members, a plurality of horizontal reinforcing bars extending in the width direction of the structure, and holding these horizontal reinforcing bars at predetermined intervals in the height direction. And a pair of vertical frame members, wherein the pair of horizontal frame members and vertical frame members are joined to form a box-shaped external appearance while holding the vertical rebar and the horizontal rebar, respectively, to form a rebar net, and this rebar net is formed. A fixed frame composed of a plate member extending in the height direction and a connecting member extending in the horizontal direction is fixed to the bolt member of the horizontal frame member, the plurality of the plates being opposed to each other at a predetermined interval. It is the main part of the rebar cage because it is configured as It is relatively easy to hang up the reinforcing bar net alone and to build it up at the installation position of the reinforcing bar car.

Also, disassemble the components other than the rebar net into each component,
By precasting each and attaching them at the current position, it is possible to reduce the reinforcing steel material. Further, by reducing the reinforcing steel material used when assembling the reinforcing bar car, it is possible to achieve the efficiency of the assembly and processing of the reinforcing bar car, labor saving and reduction of manufacturing cost, and shortening of the assembly process.

Moreover, since the reinforcing bar cage can be assembled only by assembling the fixing frame between the reinforcing bar nets arranged at intervals, the assembly can be performed easily and quickly.
In addition, since the bolt members are provided at both ends of the horizontal frame member of the rebar net, the bolt members can be inserted into the fixed frame and the nuts can be tightened without performing work such as welding. You can assemble the rebar cage by connecting and. Moreover, during the work, the worker can perform the nut tightening work and the rebar cage assembling work with one hand, and also use the fixing frame as a ladder and the connecting member as a foothold to climb and work on it. It can be carried out.

Also, since the weight of the rebar cage is reduced, it is possible to downsize cranes and other lifting machines required for construction, and it is relatively easy to install cranes in narrow spaces, reducing heavy equipment costs. You can

Further, in the structure of the reinforcing bar car of the present invention, since the horizontal frame member and the vertical frame member are integrally formed in advance, the process of assembling the reinforcing bar car can be simplified.

A method for assembling a reinforcing bar car according to the present invention includes a plurality of vertical reinforcing bars and a plurality of horizontal reinforcing bars, a pair of horizontal frame members provided with bolt members projecting laterally at both ends, and a pair of vertical frame members. And a rebar net is formed by holding with, and a plurality of rebar nets are arranged to face each other with a predetermined interval, and are composed of a plate member extending in the height direction and a connecting member extending in the horizontal direction. Since the fixing frame is fixed to the bolt member, the reinforcing bar cage can be assembled on site when constructing the underground continuous wall or the like.

[Brief description of drawings]

1 to 5 are views showing an embodiment of the reinforcing bar car of the present invention, and FIG. 1 is an overall perspective view of the reinforcing bar car, FIG.
The figure is a front view, FIG. 3 is a plan view, FIG. 4 is a side view of a fixed frame, and FIG. 5 is a state diagram showing a manufacturing state of a reinforcing bar cage. 1 ... Reinforcing cage, 3 ... Reinforcing bar net, 4 ... Vertical reinforcing bar, 5 ...
Horizontal frame material, 5a …… Stud bolt (bolt member), 6 ……
Horizontal rebar, 7 ... vertical frame material, 10 ... fixed frame, 11 ... flange plate (plate member), 13 ... connecting angle (connecting member).

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Hideo Tokumasu 2-16-1, Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Juichi Ise 2-16-1, Kyobashi, Chuo-ku, Tokyo Shimizu Construction company (72) Inventor Yoshihiro Takekawa 2-16-1, Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Kaori Tanaka 2-16-1, Kyobashi, Chuo-ku, Tokyo Ken Shimizu (56) Reference JP-A-2-147716 (JP, A)

Claims (3)

[Claims] 1. A plurality of vertical rebars extending in the height direction of a structure, and a plurality of vertical rebars for holding the vertical rebars at predetermined horizontal intervals and projecting laterally at both ends thereof. A pair of horizontal frame members provided, a plurality of horizontal rebars extending in the width direction of the structure, and a pair of vertical frame members that hold these horizontal rebars at predetermined intervals in the height direction A state in which the pair of horizontal frame members and vertical frame members are joined to form a box-like appearance by holding the vertical reinforcing bar and the horizontal reinforcing bar respectively to form a reinforcing bar net, and a plurality of the reinforcing bar nets are spaced apart from each other by a predetermined distance. A fixed frame composed of a plate member extending in the height direction and a connecting member extending in the horizontal direction, the fixing frame being fixed to the bolt member of the horizontal frame member. And the structure of the rebar cage. 2. The structure of the reinforcing bar cage according to claim 1, wherein the horizontal frame member and the vertical frame member are integrally formed in advance. 3. A plurality of vertical reinforcing bars and a plurality of horizontal reinforcing bars,
A horizontal frame member provided with bolt members protruding laterally at both ends,
A reinforcing bar net is formed by holding it with a pair of vertical frame members, and a plurality of reinforcing bar nets are arranged to face each other with a predetermined interval, and a plate member extending in the height direction and a joint extending in the horizontal direction. A method for assembling a reinforcing bar car, comprising fixing a fixing frame composed of a member and the bolt member.